Concrete

Moisture measurement in bulk solids including RMC

Published

4 years ago

December 21, 2021

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Time Domain Refractometry (TDR) is a method used to measure the dielectric constant (water content) of a material.

Time Domain Refractometry (TDR) is a method used to measure the dielectric constant (water content) of a material. Metal conductors or rods are used as wave guides for the transmission of the TDR-signal. The device generates a high-frequency-pulse (up to 1GHz) which propagates along the wave guides at the speed near to light, generating an electromagnetic field around the probe. At the end of the wave guides, the pulse is reflected to its source. The resulting transit time from picoseconds to nanoseconds and dielectric constant provide an accurate measurement of moisture content. The moisture content is calculated inside the device and is available at standard analogue outputs.

IMKO, a German company, which part of the Endress+Hauser Group has developed a patented measuring method called TRIME® TDR method. With this technology it is possible to measure the transit time with a resolution of 3 picoseconds. The TRIME® TDR method has been successfully used more than 30 years in the process industry.

The TRIME® TDR -technique has an ideal measuring frequency between 600MHz and 1.2GHz and the measuring field penetrates deep into the material. The electromagnetic pulses generated in the TRIME device are high enough and constant for good resolution and accuracy of measurement. In addition, disturbing influences such as electrical conductivity have nearly no effect. Precise moisture can be measured in temperatures up to 120°C. TRIME® TDR technology is used in Solitrend product which helps to increase product quality and reduce energy efforts due to precise moisture measurement.

The senor used in Solitrend is in direct contact with the material. Calibration is a simple linear equation. Measurement field adapts itself to the shape of material and is quite large. It is also undisturbed by dripping water, air and dirt. The probes are extremely rugged for exceptionally long operational life. It also replaces time consuming lab analysis and manual sampling with continuous online measurement.

Both In line as well as portable probes measurements are available.

Application

The building industry. Moisture measurement in Ready Mix Concrete.
In line moisture content measurement in bulk material or goods like wood chips, pellets, animal food etc.
The glass and ceramics industry like silica sand, moulding sand, ceramics mass.
Food Industry. Malting plants, Corn, Sludge drying, Fluid bed dryers (inlet/outlet).

Limitations of other methods

Capacitance method – This method works with single measuring frequencies between 5-80MHz. The dielectric constant is influenced both by moisture and salinity. It is very difficult to distinguish between the two influences and precise moisture measurements are difficult to achieve.

Microwave method – The frequencies of microwave techniques are generally higher than 2GHz. This technique leads to loss in resolution and accuracy of measurement having negative influence on the readings.

Conductance or Resistance method – This method have very low measuring frequencies of about 4kHz. There is a strong influence of different salinity of the bulk material on the measurement. The difference in salinity is caused by different mineral contents temperature. Another problem of resistance method is the low penetration depth of the measuring field.

Near-Infrared method (NIR)-This method shows a very lower penetration depth and, therefore, considerable influences of material surface and thickness.

Scan the QR code for more information or write to us on info.in.sc@endress.com.

Concrete

Siyaram Recycling Secures Rs 21.03 mn Order From Anurag Impex

Domestic Fixed Cost Contract To Be Executed Within Seven Days

Published

1 day ago

April 15, 2026

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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

1 day ago

April 15, 2026

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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

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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.