Materials

Strength Activity Index Test for Pozzolanic Material

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Strength Activity Index Test for Pozzolanic Materials

Strength Activity Index (SAI) Test (ASTM C311/C311M) Ordinary Portland Cement (OPC) production is highly energy-intensive and contributes significantly to carbon emissions. To reduce cement consumption and improve sustainability, supplementary cementitious materials (SCMs) are incorporated into concrete. Many of these materials exhibit pozzolanic properties, meaning they react with calcium hydroxide [Ca(OH)₂], a by-product of cement hydration, … Read more

Silica Fume (Microsilica) in Concrete: Benefits, Working Mechanism, Dosage, Challenges

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Silica fume of Microsilica in concrete

Concrete is no longer just a mixture of cement, sand, aggregates, and water. Modern structures such as high-rise buildings, long-span bridges, marine structures, metro projects, and industrial plants demand concrete that is stronger, denser, and far more durable than conventional concrete. One material that has completely changed the way high-performance concrete is produced is silica … Read more

Demineralized Water or DM Water – What, Why & How

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DM water or Demineralized water

Water is one of the most important raw materials used in industries. However, not every process requires ordinary tap water. Many industrial operations need water that contains almost no dissolved minerals. This is where DM water or demineralized water becomes essential. By removing dissolved salts and mineral ions, DM water helps prevent scaling, corrosion, contamination, … Read more

25+ Codal Provisions from IS 516 (Part 1 / Section 1): 2021 – Testing of Hardened Concrete

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25 codal provisions to remember from IS 516 (Part1Sec1) 2021

Codal Provisions from IS 516 (Part 1 / Section 1) If you are involved in construction, quality control, or civil engineering, keeping up with standard codes is crucial for safety and compliance. The Bureau of Indian Standards updated its concrete testing protocols with IS 516 (Part 1 / Section 1): 2021. This comprehensive standard outlines … Read more

Compressive Strength Test of Concrete (ASTM C39 & IS 516)

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Compressive strength test of concrete ASTM C39 vs IS 516

On almost every construction project, thousands of concrete cubes or cylinders are cast and tested. Yet obtaining an accurate result involves much more than simply placing a specimen in a compression testing machine. Factors such as specimen preparation, curing conditions, machine calibration, loading rate, and even the exact age of the specimen can significantly influence … Read more

Rice University Brings New Optionality to One of Concrete’s Oldest Problems

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Texasslabguys.com Texas slab guys Jeff Price

Texas Slab Guys Explains a Concrete Breakthrough By Jeff Price, Founder & President, Texas Slab Guys For as long as reinforced concrete has existed, engineers have watched it fail in ways that feel almost inevitable. A coastal overpass develops rust stains along its soffits. A parking garage deck starts flaking at the rebar lines. A … Read more

Why Cement Mortar Need to be Consumed Within 30 min?

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properties of mortar

Why cement mortar need to be consumed within 30 min just after it is mixed? Cement mortar is a mixture of cement, sand, and water used for various construction purposes such as plastering, masonry, and laying bricks. The reason why cement mortar needs to be consumed within 30 minutes after its preparation is due to … Read more

WHAT IS REVERSE OSMOSIS?

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How to check quality of drinking water

WHAT IS REVERSE OSMOSIS? Reverse Osmosis is not a new concept. Its process was first observed in 1748 by Jean-Antoine Nollet who used a pig’s bladder as a membrane.  Do you know why was it put into use and for what purpose?  Reverse Osmosis is the most popular technique used to purify water. It was … Read more

10+ TECHNICAL REQUIREMENTS ON DURABILITY OF CONCRETE [IS-456]

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Durability of concrete

From High Strength to High Performance Concrete Durability of concrete is now becoming the major concern for engineers as concrete may deteriorate with time in several ways. The most common durability failures in an outdoor climate are due to reinforcement corrosion or frost attack. In special environments concrete may suffer from chemical attack by various … Read more