Concrete

Effective communication is essential in precast detailing

Published

2 years ago

October 19, 2023

admin

Vijay Shah, Managing Partner, India Precast, talks about the process of making precast concrete shapes, with a focus on the challenges that accompany the production.

Tell us about the process of casting concrete in shapes.
Precast concrete products are made through pouring either wet cast or dry cast concrete into moulds, which are then hardened and removed to be dispatched. These moulds could be from concrete posts, pillars, columns, slabs etc. This benefits the construction process as it can be difficult to manoeuvre or create the right shapes and sizes by pouring the concrete on site.

The process of making precast shapes involve:

Build a form. The inside of the form defines the shape that is being created. This form is then filled up with cement and is kept to dry and harden.
Clean the mould before adding cement to it. The mould should be lined with materials or chemicals that allow for the hardened concrete structure to retrieve from it.
Cement or concrete mix is then created to be poured into the moulds for setting. We use a variety of concrete grades like M25, M30, M35, M40, and M45 for this mix. The mould poured in cement is left alone for 24 hours to harden and removed once set.
Once set, a hard mould is either broken or the cast is retrieved from a soft mould by shaking, which is ready to be transported to the location of construction or building activity.

What are the standard sizes and shapes of precast made by your organisation?
Our organisation makes various types of precast elements like:

Solid load bearing floor slabs, load bearing walls, facades, sandwich wall panels and cladding panels
Floor and roof slabs, made from prestressed load bearing hollow concrete slab and ribbed slab. Floors or roofs are also made from half floor slab or semi-finished floor slab with
lattice girder.
Precast stair cases, balcony, toilet pods, lift shafts and water tanks
Prestressed lintel, frames, beams, column and double tee beam
Internal partition walls, made from light-weight hollow core wall panels instead of AAC blocks or bricks
Sandwich walls, beams, columns, I-Beam, tee beam, lintel, footings, boundary walls, retaining walls, fencing poles, U-drainage or trench, box culvert, jersey barriers, covers, paver blocks etc.

Explain the moulds used to make these shapes. Do you customise moulds?
Concrete moulds are moulds that are used to shape the concrete you are working with. The concrete will adopt the shape of the mould as it cures. Concrete moulds are used to give concrete its finishing shape. Moulds are of various types (refer table below). We customise the moulds as per requirements.

S. No. Mould type Uses

Conventional moulds Ribbed slabs, beams, window panels, box type units and special elements
Battery moulds Interior wall panels, shell elements, roof and floor slabs
Tilting moulds Exterior wall panels where special finishes are required on one face or for sandwich panels
Long line prestressing beds Double tees, ribbed slabs, piles and beams
Extrusion machine Roof slabs and hollow core slabs

Up Next

Greener energy has a positive impact on manufacturing

Don't Miss

The market is moving towards a precast prestressing system.”

Concrete

Siyaram Recycling Secures Rs 21.03 mn Order From Anurag Impex

Domestic Fixed Cost Contract To Be Executed Within Seven Days

Published

22 hours ago

April 15, 2026

admin

Siyaram Recycling Industries Limited (Siyaram Recycling) has informed the stock exchange that it has secured a purchase order for brass scrap honey from Anurag Impex. The company submitted the intimation on 10 April 2026 from Jamnagar and requested the filing be taken on record. The filing was made under the provisions of regulation 30 of the SEBI listing regulations and accompanying circular. The intimation referenced the SEBI circular dated 13 July 2023 and included an annexure detailing the terms.

The order carries a fixed cost value of Rs 21.03 million (mn) and is to be executed domestically within seven days. The contract was described as a fixed cost engagement and the customer was identified as Anurag Impex. The announcement specified that the order size contributes a short term consideration to the company. Owing to the brief execution window, logistics and dispatch were expected to be prioritised.

The filing clarified that neither the promoter group nor group companies have any interest in the purchaser and that the transaction does not constitute a related party transaction. Details were provided in an annexure and the document was signed by the managing director, Bhavesh Ramgopal Maheshwari. The company referenced compliance with SEBI disclosure requirements in its notification. The notice indicated that no related party approvals were required owing to the nature of the transaction.

The order is expected to provide a modest near term revenue inflow and to be processed within the stated execution window given the nature of the product and the fixed cost terms. Management indicated the contract will be executed in accordance with standard operational procedures and accounting recognition at completion. The development signals continuing demand in the secondary metals market for brass scrap.

Concrete

Nuvoco FY26 Income Rises 10% as Expansion Advances

Cement major reports higher income, EBITDA and growth-led capacity plans

Published

22 hours ago

April 15, 2026

admin

Nuvoco Vistas reported cement sales volume of 20.4 million tonne in FY26, up 5 per cent year on year. Consolidated total income rose 10 per cent to Rs 113.62 billion, while EBITDA increased 35 per cent to Rs 18.81 billion, reflecting improved profitability and stronger execution across the business.

The company stated that execution at the Vadraj Cement facilities is progressing, with clinker and grinding units expected to be operationalised in phases from the third quarter of FY27. Its planned 4 million tonne per annum expansion in eastern India is also moving ahead in phases till FY28 and is expected to take total cement capacity to around 35 million tonne per annum.

The board has also approved a new bulk cement terminal at Viramgam, Sachana, Gujarat, with a dedicated railway siding and handling capacity of about 1.5 million tonne per annum. Targeted for commissioning by FY28, the terminal is expected to strengthen distribution and improve market reach across Gujarat.

Premium products remained a key growth driver, with premiumisation improving by 300 basis points year on year to 43 per cent in FY26. The company said its Nuvoco Concreto and Nuvoco Duraguard brands continued to gain traction, while the RMX and MBM businesses also recorded momentum across key product segments.

Concrete

BMC Cement Concretisation Cuts Pothole Repairs By 70 Per Cent

Project worth Rs 170 billion (Rs 170 bn) aims to concretise 1,900 km by 2027

Published

3 days ago

April 13, 2026

admin

The Brihanmumbai Municipal Corporation’s cement concretisation project, valued at Rs 170 billion (Rs 170 bn), has reduced expenditure on pothole repairs by 70 per cent over three years. Spending on repairs fell from Rs 2.02 billion in 2023–24 to Rs 1.56 billion in 2024–25 and then to Rs 890 million (Rs 890 mn) in 2025–26. The current tender is expected to be about Rs 440 million, representing a further 50 per cent reduction.

The project is being executed in two phases, with Phase I covering 307 km from October 2023 and Phase II covering 370 km from October 2024. The Indian Institute of Technology is auditing Phase II and will now also audit Phase I to ensure quality and accountability. Mumbai’s total road network spans approximately 2,050 km, of which about 1,200 km had been converted to cement concrete before 2022.

Since 2022 an additional 677 km were taken up for concretisation and nearly 71 per cent of that work, amounting to 481 km, has been completed. Municipal officials indicated that 10–15 per cent of the remaining work is expected to be completed by May 2026 and another 10 per cent by December 2026. The entire programme is scheduled for completion by May 2027, by which time nearly 1,900 km of Mumbai’s roads are expected to be fully concretised.

The administration has also developed a real time dashboard that displays detailed information about contracts, contractors and progress and citizens can access the latest updates online. The dashboard includes contact details for the civic officials and contractors responsible for particular roads to enhance transparency and accountability. The commissioner directed that ongoing works be completed by 31 May ahead of the monsoon to safeguard completion targets and minimise disruption.