This is just one brand of hydraulic cement. Concrete Crack Repair Tips. Many homeowners don't realize that ordinary Portland cement shrinks when it dries. The shrinkage is very little, however, it does shrink.
The Dos and Don’ts of Curing Concrete
This Is Why Concrete Explodes When Heated To High Temperatures
The Romans used it to build many of their oldest surviving structures, and it was so crucial that people spent hundreds of years trying to recreate the recipe after it was lost to history. When concrete is heated to extremely high temperatures, it can actually explode. Those explosions can have pretty significant consequences when a fire breaks out near a concrete structure, but the actual process of how the blowups happen isn't very well understood by scientists. New research , however, attempts to change that by recreating these explosions in a lab. In the study, Swiss and French scientists made their own high-performance concrete and heated it to several hundred degrees.
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Cracked Concrete - Why Does Concrete Crack?
Why Does Cement Set? Concrete has been known for literally thousands of years. It is a testament to the enduring strength of this material that concrete structures from those long-ago times are still standing strong today.
Register now or log in to join your professional community. Water is essential for the hydration, but you can compensate for the other2 absorption and workability as for the absorption you can wash the aggregates and for the workability you can use admixtures. So in my opinion, reduce the water, don't increase the cement cost wise and use admixtures to compensate the workability. To increasing the compressive strength of concrete, we must increase cement and decrease water quantity.