Tarek Khan

Tarek Khan's Posts

Take the Sweat Out of Hot-Weather Concreting

Hot weather can have many negative effects on fresh and hardened concrete properties, including increased water demand, accelerated rate of cement hydration, increased moisture and slump loss, faster setting times, increased plastic- and drying-shrinkage cracking, and lower ultimate strengths. But construction doesn't have to stop when air temperatures rise above 90øF. By adding chemical admixtures to concrete mixes, you can improve concrete workability while reducing total water content. Other benefits included increased concrete strength and durability and lower total in-place costs. Read more

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