Product development
Dimensions in Construction and Maintenance of Rigid Pavements
Published
3 years agoon
By
adminSatander Kumar, Scientist (Retd.), Central Road Research Institute, emphasises on the importance of rigid pavements.The main concrete roadwork for city roads was started in Mumbai in 1924. Marine Drive was constructed in 1938-1939 using semi mechanised methods and was laid on reclaimed soil in coastal area and the road is still performing well in certain locations after nearly 63 years of service despite unfavourable environmental conditions. Later, concrete roads were constructed in Shivaji Park Area in 1943.The use of paver requires huge quantity of concrete, as the speed of the paver is about 1m/minute. The quantity required is very difficult to reach because of congestion and heavy traffic and also more space is required for keeping the machineries on the congested roads. Therefore, it is difficult to use paver for construction of concrete roads mainly in the cities. Further, concrete road work is in progress using semi mechanised methods and fixed form pavers at many places like Mumbai, Pune, Thane, Delhi, Bangalore, Goa, Nagpur, Chanderpur, Noida, Dadri, Rohtak, Jhajar, Chandigarh, Shimla. At present cost of rigid pavement and flexible pavement is at par for very heavy traffic roads for National Highways. Most of the National Highway pavement are being constructed with slipform pavers/mechanised pavers. For toll roads, rigid pavement is preferred and is being adopted. At certain location, semi-mechanised in place of slipform pavers is also being used in Highways near structures or for full depth repair etc.Many of our airfield pavements have been made with as rigid pavement especially at the apron and runway ends. In India, first mechanised road was for two additional lanes for 56 km long stretch of Delhi Mathura road -major concrete pavement project sponsored by MOSRTH during 1993-1994 executed by IRCON/UP PWD and Haryana PWD. Rigid pavement under NHDP programme is approximately 1680 km (equivalent two lanes) sponsored by NHAI in NH-2 and NH-60 in 2004-2005. The Mumbai Pune Expressway is the first international-standard six lane expressway constructed in India and that too in concrete. 8 lakh cu m of Pavement Quality Concrete (PQC) and three lakh cu m of DLC was produced for making rigid pavements. Next rigid pavement in the expressway was, Yamuna Expressway. Flexible pavement was adopted only in marshy regions.On deck slab, 15 mm mastic with 50 mm BC on the top in two layers was laid. Presently white topping (ie. Rigid pavement over flexible pavement) and paver block technology is being adopted in many states.Need and advantagesAdoption of cement concrete pavement is satisfactory in certain locations such as parking areas, heavy traffic roads, National Highways, urban roads, aprons, ends of the runways (Airfield), under passes, steep terrains, low lying areas, because of its low life cycle cost, and long term durability/serviceability. Cement concrete pavement had been considered as good potential and cost-effective as these hav; longer design life, lower maintenance cost, good performance and provides reduced vehicle operational cost.Reinforced cement concrete (RCC) is suitable at steep terrains, on very low bearing capacity soils, where length/breadth ratio of PQC panel is more than 1.5, in case of full depth repair, for better riding quality with lesser no. of joints, where there is likely chances of cracking, to minimise reflection or sympathetic cracking. Recent activities in this field are white topping and ultra thin white topping, self Compacted Concrete pavement, high performance concrete pavement, recycling of rigid pavements/flexible pavement as base, composite pavements, pre-stressed rigid pavement, early opening to traffic rigid pavement (traffic can be opened in 3-6 hours.Innovation in flyash One of the most problematic solid industrial wastes posing serious problem is the fly ash from thermal power stations. Coal based thermal power stations have been set up in large numbers to meet the increasing energy demand. In a thermal power station, two types of ashes are produced from burning a coal. Lighter fraction goes up the chimney and is caught by electrostatic precipitator (ESP). This is known as fly ash (Passing 45 micron). This is used for making blended cement. The other fraction containing coarser material collected at the bottom of the furnace is called bottom ash (of size 1 mm or less). This non plastic fly ash had been used in one of the layers of high embankments. About 80 per cent of the total ash produced is fly ash. In the wet disposal system, which is being followed by most of the power stations in our country, both fly ash and bottom ash are mixed with water and pumped into artificial lagoons. This combined ash is known as pond ash. Combined ash or bottom ash has also been used as soil replacement in high embankments in India on heavy traffic roads and a minimum cover of good earth of 1 m had been provided as the fly ash used is non plastic. Processing of fly ash and High volume fly ash concrete, Self compacted concrete, use of fly ash with silica fume in concrete are best innovation in fly ash.Innovation in flyash in concreteFlyash in the blended cement improves characteristics of plastic concrete. Briefly, flyash in blended cement usage also results in reduced mixing water, improved workability, pumpability and finishing,reduced bleeding, better appearance during night and better in high strength FRC for making ultra thin whitetopping.It has been observed that flexural strength of the fly ash admixed concrete (which is basic requirement of rigid pavement on which its design depends) is improved much as comparative to compressive strength. 90 days or 365 days strength is much more than OPC concrete without fly ash.Recently, Portland Pozzolana Cement (PPC) Gr.I, (Fly ash Based) has been now used for making concrete pavement. "Code of Practice for Plain and Reinforced Concrete". Use of blended cement is to minimise environment pollution. M40 Grade concrete or higher required for PQC, either 43 or 53 grade of cement is considered more feasible containing fly ash up to maximum 25 per cent as per IRC 15. Innovation superplasticiser High Range Water Reducing Admixtures/poly carboxylic based super plasticizers further influence the strength of cement-aggregate bond. For making concrete using fly ash/silica fume very low water/cement ratio is required but at the same time concrete should be workable. This workability is achieved by the use of high range water reducing admixtures (superplasticizers).Normally sulphonated melamine formaldehyde condensate and sulphonated naphthalene formaldehyde condensate are used as high range water reducing admixtures. Especially where very high fineness materials such as fly ash or silica fume collected from electrostatic precipitator (ESP), are used it is essential to use super plasticizers ( poly carboxylic ether based) in the concrete as per IS 9103-1999. Use of plasticizers along with slight content of air entraining agent also produces very good finish of concrete and gives very uniform cohesive mix.Innovation-fibre reinforced Fibres are now being used in paving concrete. However, polymeric fibres also have been used in concrete at toll plaza. Fibre not only increases the flexural strength but also post cracking ductility of concrete is increased. Fibres may be used to improve the toughness of concrete also and also improves the impact strength and inherent flexural strength. Fibre, silica fume and fly ash admixed concrete behaves better in poor shaped panels where some time specified L/B ratio is difficult to maintain and to minimise plastic shrinkage cracks and where tie/bars are also not used. Innovation using blended cement Blended cements have now been recommended by IRC in not only roads, but also in bridges. Following are some of the innovation and special properties of blended cements:• PPC contains less per cent age of Ordinary Portland Cement as compared to Pure OPC. It may contain 10-35 per cent fly ash.• In PPC therefore there is likely delay in setting and hardening and may take more time in winters, and also gives better results in the tropical environment.• In case of OPC, joint cutting may not have any problem in winter, however in summer due to rapid setting it is difficult to manage joint cutting in the stipulated time, joints are cut in stages/alternate initially.• Reverse is the case with PPC, as in winter it is difficult to cut joint even with in 24 hours and this may cause transverse cracking.• Because of slow setting and with light movement of traffic; texture depth in localised areas may be affected early. Use of silica fume/ 53 grade OPC along with polymeric or steel fibres may resolve this problem. Curing time is increased by two or more days as compared to OPC concrete.Rigid pavement at toll plazaVehicles are required to decelerate while entering the toll lane, stop for payment and then accelerate and merge in the main line traffic of the highways/expressways. All these operation of vehicles at toll Ppaza are prone to oil/POL spillage on the surface, which may have cut-back action on bituminous surface. Therefore, concrete pavement or rigid pavement or white topping payment would be preferred in the toll plaza area including tapering zone from durability and long term serviceability consideration. The minimum grade of concrete shall be M 10 at 7 days for dry lean concrete (DLC) as per IRC: SP 49. The minimum grade of concrete for PQC shall be M 40 and minimum flexural strength or modulus of rupture shall be 4.5 mpa. Use of stabilised sub grade, sub base, bases with cementitious soil stabiliser such as innovative and patented RBI Grade 81 or equivalent will produce long lasting pavement like in China, mostly stabilised layers are being used for making roads. Crusher dust or stone dust conforming to fine aggregate shall not be more than 20 per cent in case of pavement quality concrete (PQC) and in dry lean concrete (DLC) to the extent of 100 per cent crusher dust as an alternate to river sand or natural may be used. To make the concrete more ductile, fibres in high strength concrete i.e M40 and above were added in PQC at toll plaza up to 25 m length. Use of fibres- Irc 15-2011Fibers were used as provision in the design to reduce the shrinkage cracking and post-cracking. The fibers may be steel fiber as per IRC: SP: 46 or polymeric Synthetic Fibers (e.g. polypropylene, polyester, polyethylene, nylon).Innovative solutions in design of the rigid pavementThe stage construction shall not be permitted in case of rigid pavement. The new rigid pavement shall be designed in accordance with IRC 58. The existing rigid pavement may be rehabilitated either by rigid or flexible over layers. In place of alone sub grade CBR, is considered taking effect of embankment CBR. Minimum CBR is 8 per cent and in flexible pavement minimum CBR is 5 per cent. For widening and extending rigid pavement with flexible and vice versa, rigid with rigid, proper key/stepping of the existing with rigid may be carried out as per IRC: 15-2010. The DLC shall be extending beyond the PQC (including that in paved shoulder, if any) by 1 m on either side with a camber of 1.6 to 2 per cent. A properly designed drainage layer (GSB) of thickness 150- 200 mm shall be provided using motor grader and rollers with permeability of 20 m/day.The density of sub grade shall not be less than 1.75 kg/cubic cm. The thickness of subgrade shall be minimum 500 mm with a camber of 3 per cent. Each layer to be compacted shall not be more than 200 mm. Reasons of crackingHeat development in cement-rich concretes can result in high internal temperature stresses. Thus, consideration is given to minimising thermal gradients which result in cracking which will reduce the life and performance of concrete pavement by adding fly ash or making high volume fly ash concrete for pavements. When high-strength concrete is used in floor slabs, plastic shrinkage cracks may result when just after construction there is a loss of water 1 kg/sq m/ hour. The primary cause for these plastic shrinkage cracks for freshly placed slabs is very rapid loss of moisture from the concrete caused by low relative humidity, low water content per cubic meter of concrete, high wind and high temperature differential in concrete. Pavement performance indicators The roughness as measured in each lane with 5th wheel bump indicator (BI) shall not be less than 2000 mm/km. No cracks of thickness more than 0.3 mm other than shrinkage cracks are permitted. Other distress shall not be more than as specified in IRCSP:83. Total length of cracks shall not be more than 2000 mm and individual crack shall not be more than 1000mm in a normal panel (4.5 mX 3.5 m) of concrete road. Also,Rigid pavements shall be provided with surface and subsurface drainage system so that all the storm water is drained off efficiently and stagnation of water takes place at any areas. Adequate water supply during construction shall be provided. Maintenance of WhitetoppingBroken edges shall be shaped neatly with a vertical cut with chisels/joint cutting machine into the shape of rectangle. Small pneumatic chisels also may be used, provided the cutting depth can be controlled. The depth of the cut shall be the minimum to affect repair. After shaping the spalled area, it shall be cleaned and primed all sides vertical and bottom. The epoxy mortar/concrete is then applied using hand tools like trowels, straight edges, brushes etc. The repaired edge shall be in line with the joint groove and shall be flush with the concrete slabs. During the repair work, any damage noticed to the joint sealant shall be made good by raking out the affected portion and resealing. Low viscosity epoxy resins shall be used for sealing fine cracks with injection/pouring and also sealing the sides of repaired patch to make it monolithic.Economical rigid pavementThe cost of rigid pavement can be reduced/controlled in certain cases by adopting design of rigid pavement for 90 days, closer joint spacing in PQC, use of local material – flyash, slag, marginal materials, roller compacted concrete pavement (RCCP) where riding quality upto 3000 mm/km may be accepted like in parking bay, use of Hot sealant, Use of tie bars at butt type only, Undowelled joints/untied joints, making of joints with T beam Conclusion Based on the current practices being adopted, conclusions that can be derived are; the grade of PQC M40 or more than is essential for abrasion resistance and structural consideratio. Use of polypropylene fibre as per IRC 44 and foaming agent for initial curing, may be used to minimise plastic shrinkage cracks which are due to high wind speed or high ambient temperature very low relative humidity. These cracks will occur, when rate of evaporation of water is more than 1 kg/sq m /hour from top PQC surface as per IRC 15. The ability to control the size and amounts of cracks will also lead to improved durability by the use of fibre reinforced concrete or by stabilisation of subgrade or sub base with cementitious soil stabilisers accredited by IRC. In PQC panel, where ratio of length/width of the panel is more than 1.5, nominal reinforcement of 12 mm deformed bars of Fe 500 as per IS 1786 at 150 mm c/c, with 50 mm cover placed 50 mm down from top or 50 mm up from the bottom of slab.• There is innovation in slip form paver in which DLC and PQC can be laid simultaneously besides intelligent rollers which can measure density also. • Cone crusher/vertical shaft impactor/ aggregate washing plant in aggregate field and 240 cu/hr batching plant with inbuilt ice plant.
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Advertising or branding is never about driving sales. It’s about creating brand awareness and recall. It’s about conveying the core values of your brand to your consumers. In this context, why is branding important for cement companies? As far as the customers are concerned cement is simply cement. It is precisely for this reason that branding, marketing and advertising of cement becomes crucial. Since the customer is unable to differentiate between the shades of grey, the onus of creating this awareness is carried by the brands. That explains the heavy marketing budgets, celebrity-centric commercials, emotion-invoking taglines and campaigns enunciating the many benefits of their offerings.
Marketing strategies of cement companies have undergone gradual transformation owing to the change in consumer behaviour. While TV commercials are high on humour and emotions to establish a fast connect with the customer, social media campaigns are focussed more on capturing the consumer’s attention in an over-crowded virtual world. Branding for cement companies has become a holistic growth strategy with quantifiable results. This has made brands opt for a mix package of traditional and new-age tools, such as social media. However, the hero of every marketing communication is the message, which encapsulates the unique selling points of the product. That after all is crux of the matter here.
While cement companies are effectively using marketing tools to reach out to the consumers, they need to strengthen the four Cs of the branding process – Consumer, Cost, Communication and Convenience. Putting up the right message, at the right time and at the right place for the right kind of customer demographic is of utmost importance in the long run. It is precisely for this reason that regional players are likely to have an upper hand as they rely on local language and cultural references to drive home the point. But modern marketing and branding domain is exponentially growing and it would be an interesting exercise to tabulate and analyse its impact on branding for cement.
Concrete
Indian cement industry is well known for its energy and natural resource efficiency
Published
2 years agoon
November 18, 2022By
adminDr Hitesh Sukhwal, Deputy General Manager – Environment, Udaipur Cement Works Limited (UCWL) takes us through the multifaceted efforts that the company has undertaken to keep emissions in check with the use of alternative sources of energy and carbon capture technology.
Tell us about the policies of your organisation for the betterment of the environment.
Caring for people is one of the core values of our JK Lakshmi Cement Limited. We strongly believe that we all together can make a difference. In all our units, we have taken measures to reduce carbon footprint, emissions and minimise the use of natural resources. Climate change and sustainable development are major global concerns. As a responsible corporate, we are committed with and doing consistent effort small or big to preserve and enrich the environment in and around our area of operations.
As far as environmental policies are concerned, we are committed to comply with all applicable laws, standards and regulations of regulatory bodies pertaining to the environment. We are consistently making efforts to integrate the environmental concerns into the mainstream of the operations. We are giving thrust upon natural resource conservation like limestone, gypsum, water and energy. We are utilising different kinds of alternative fuels and raw materials. Awareness among the employees and local people on environmental concerns is an integral part of our company. We are adopting best environmental practices aligned with sustainable development goals.
Udaipur Cement Works Limited is a subsidiary of the JK Lakshmi Cement Limited. Since its inception, the company is committed towards boosting sustainability through adopting the latest art of technology designs, resource efficient equipment and various in-house innovations. We are giving thrust upon renewable and clean energy sources for our cement manufacturing. Solar Power and Waste Heat Recovery based power are our key ingredients for total power mix.
What impact does cement production have on the environment? Elaborate the major areas affected.
The major environmental concern areas during cement production are air emissions through point and nonpoint sources due to plant operation and emissions from mining operation, from material transport, carbon emissions through process, transit, noise pollution, vibration during mining, natural resource depletion, loss of biodiversity and change in landscape.
India is the second largest cement producer in the world. The Indian cement industry is well known for its energy and natural resource efficiency worldwide. The Indian cement industry is a frontrunner for implementing significant technology measures to ensure a greener future.
The cement industry is an energy intensive and significant contributor to climate change. Cement production contributes greenhouse gases directly and indirectly into the atmosphere through calcination and use of fossil fuels in an energy form. The industry believes in a circular economy by utilising alternative fuels for making cement. Cement companies are focusing on major areas of energy efficiency by adoption of technology measures, clinker substitution by alternative raw material for cement making, alternative fuels and green and clean energy resources. These all efforts are being done towards environment protection and sustainable future.
Nowadays, almost all cement units have a dry manufacturing process for cement production, only a few exceptions where wet manufacturing processes are in operation. In the dry manufacturing process, water is used only for the purpose of machinery cooling, which is recirculated in a closed loop, thus, no polluted water is generated during the dry manufacturing process.
We should also accept the fact that modern life is impossible without cement. However, through state-of-the-art technology and innovations, it is possible to mitigate all kinds of pollution without harm to the environment and human beings.
Tell us about the impact blended cement creates on the environment and emission rate.
Our country started cement production in 1914. However, it was introduced in the year 1904 at a small scale, earlier. Initially, the manufacturing of cement was only for Ordinary Portland Cement (OPC). In the 1980s, the production of blended cement was introduced by replacing fly ash and blast furnace slag. The production of blended cement increased in the growth period and crossed the 50 per cent in the year 2004.
The manufacturing of blended cement results in substantial savings in the thermal and electrical energy consumption as well as saving of natural resources. The overall consumption of raw materials, fossil fuel such as coal, efficient burning and state-of-the-art technology in cement plants have resulted in the gradual reduction of emission of carbon dioxide (CO2). Later, the production of blended cement was increased in manifolds.
If we think about the growth of blended cement in the past few decades, we can understand how much quantity of , (fly ash and slag) consumed and saved natural resources like limestone and fossil fuel, which were anyhow disposed of and harmed the environment. This is the reason it is called green cement. Reduction in the clinker to cement ratio has the second highest emission reduction potential i.e., 37 per cent. The low carbon roadmap for cement industries can be achieved from blended cement. Portland Pozzolana Cement (PPC), Portland Slag Cement (PSC) and Composite Cement are already approved by the National Agency BIS.
As far as kilogram CO2 per ton of cement emission concerns, Portland Slag Cement (PSC) has a larger potential, other than PPC, Composite Cement etc. for carbon emission reduction. BIS approved 60 per cent slag and 35 per cent clinker in composition of PSC. Thus, clinker per centage is quite less in PSC composition compared to other blended cement. The manufacturing of blended cement directly reduces thermal and process emissions, which contribute high in overall emissions from the cement industry, and this cannot be addressed through adoption of energy efficiency measures.
In the coming times, the cement industry must relook for other blended cement options to achieve a low carbon emissions road map. In near future, availability of fly ash and slag in terms of quality and quantity will be reduced due to various government schemes for low carbon initiatives viz. enhance renewable energy sources, waste to energy plants etc.
Further, it is required to increase awareness among consumers, like individual home builders or large infrastructure projects, to adopt greener alternatives viz. PPC and PSC for more sustainable
resource utilisation.
What are the decarbonising efforts taken by your organisation?
India is the world’s second largest cement producer. Rapid growth of big infrastructure, low-cost housing (Pradhan Mantri Awas Yojna), smart cities project and urbanisation will create cement demand in future. Being an energy intensive industry, we are also focusing upon alternative and renewable energy sources for long-term sustainable business growth for cement production.
Presently, our focus is to improve efficiency of zero carbon electricity generation technology such as waste heat recovery power through process optimisation and by adopting technological innovations in WHR power systems. We are also increasing our capacity for WHR based power and solar power in the near future. Right now, we are sourcing about 50 per cent of our power requirement from clean and renewable energy sources i.e., zero carbon electricity generation technology. Usage of alternative fuel during co-processing in the cement manufacturing process is a viable and sustainable option. In our unit, we are utilising alternative raw material and fuel for reducing carbon emissions. We are also looking forward to green logistics for our product transport in nearby areas.
By reducing clinker – cement ratio, increasing production of PPC and PSC cement, utilisation of alternative raw materials like synthetic gypsum/chemical gypsum, Jarosite generated from other process industries, we can reduce carbon emissions from cement manufacturing process. Further, we are looking forward to generating onsite fossil free electricity generation facilities by increasing the capacity of WHR based power and ground mounted solar energy plants.
We can say energy is the prime requirement of the cement industry and renewable energy is one of the major sources, which provides an opportunity to make a clean, safe and infinite source of power which is affordable for the cement industry.
What are the current programmes run by your organisation for re-building the environment and reducing pollution?
We are working in different ways for environmental aspects. As I said, we strongly believe that we all together can make a difference. We focus on every environmental aspect directly / indirectly related to our operation and surroundings.
If we talk about air pollution in operation, every section of the operational unit is well equipped with state-of-the-art technology-based air pollution control equipment (BagHouse and ESP) to mitigate the dust pollution beyond the compliance standard. We use high class standard PTFE glass fibre filter bags in our bag houses. UCWL has installed the DeNOx system (SNCR) for abatement of NOx pollution within norms. The company has installed a 6 MW capacity Waste Heat Recovery based power plant that utilises waste heat of kiln i.e., green and clean energy source. Also, installed a 14.6 MW capacity solar power system in the form of a renewable energy source.
All material transfer points are equipped with a dust extraction system. Material is stored under a covered shed to avoid secondary fugitive dust emission sources. Finished product is stored in silos. Water spraying system are mounted with material handling point. Road vacuum sweeping machine deployed for housekeeping of paved area.
In mining, have deployed wet drill machine for drilling bore holes. Controlled blasting is carried out with optimum charge using Air Decking Technique with wooden spacers and non-electric detonator (NONEL) for control of noise, fly rock, vibration, and dust emission. No secondary blasting is being done. The boulders are broken by hydraulic rock breaker. Moreover, instead of road transport, we installed Overland Belt Conveying system for crushed limestone transport from mine lease area to cement plant. Thus omit an insignificant amount of greenhouse gas emissions due to material transport, which is otherwise emitted from combustion of fossil fuel in the transport system. All point emission sources (stacks) are well equipped with online continuous emission monitoring system (OCEMS) for measuring parameters like PM, SO2 and NOx for 24×7. OCEMS data are interfaced with SPCB and CPCB servers.
The company has done considerable work upon water conservation and certified at 2.76 times water positive. We installed a digital water flow metre for each abstraction point and digital ground water level recorder for measuring ground water level 24×7. All digital metres and level recorders are monitored by an in-house designed IoT based dashboard. Through this live dashboard, we can assess the impact of rainwater harvesting (RWH) and ground water monitoring.
All points of domestic sewage are well connected with Sewage Treatment Plant (STP) and treated water is being utilised in industrial cooling purposes, green belt development and in dust suppression. Effluent Treatment Plant (ETP) installed for mine’s workshop. Treated water is reused in washing activity. The unit maintains Zero Liquid Discharge (ZLD).
Our unit has done extensive plantations of native and pollution tolerant species in industrial premises and mine lease areas. Moreover, we are not confined to our industrial boundary for plantation. We organised seedling distribution camps in our surrounding areas. We involve our stakeholders, too, for our plantation drive. UCWL has also extended its services under Corporate Social Responsibility for betterment of the environment in its surrounding. We conduct awareness programs for employees and stakeholders. We have banned Single Use Plastic (SUP) in our premises. In our industrial township, we have implemented a solid waste management system for our all households, guest house and bachelor hostel. A complete process of segregated waste (dry and wet) door to door collection systems is well established.
Tell us about the efforts taken by your organisation to better the environment in and around the manufacturing unit.
UCWL has invested capital in various environmental management and protection projects like installed DeNOx (SNCR) system, strengthening green belt development in and out of industrial premises, installed high class pollution control equipment, ground-mounted solar power plant etc.
The company has taken up various energy conservation projects like, installed VFD to reduce power consumption, improve efficiency of WHR power generation by installing additional economiser tubes and AI-based process optimisation systems. Further, we are going to increase WHR power generation capacity under our upcoming expansion project. UCWL promotes rainwater harvesting for augmentation of the ground water resource. Various scientifically based WHR structures are installed in plant premises and mine lease areas. About 80 per cent of present water requirement is being fulfilled by harvested rainwater sourced from Mine’s Pit. We are also looking forward towards green transport (CNG/LNG based), which will drastically reduce carbon footprint.
We are proud to say that JK Lakshmi Cement Limited has a strong leadership and vision for developing an eco-conscious and sustainable role model of our cement business. The company was a pioneer among cement industries of India, which had installed the DeNOx (SNCR) system in its cement plant.
Concrete
NTPC selects Carbon Clean and Green Power for carbon capture facility
Published
2 years agoon
October 12, 2022By
adminCarbon Clean and Green Power International Pvt. Ltd has been chosen by NTPC Energy Technology Research Alliance (NETRA) to establish the carbon capture facility at NTPC Vindhyachal. This facility, which will use a modified tertiary amine to absorb CO2 from the power plant’s flue gas, is intended to capture 20 tonnes of CO2) per day. A catalytic hydrogenation method will eventually be used to mix the CO2 with hydrogen to create 10 tonnes of methanol each day. For NTPC, capturing CO2 from coal-fired power plant flue gas and turning it into methanol is a key area that has the potential to open up new business prospects and revenue streams.