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Is the silica sand good for concrete mixed and can you help me about chemical ingredient that help increase concrete durability and strength?
Wiki User
∙ 12y ago
I will pass on the silica sand item and the strength increases. Try the portland cement association site.
As for durability, the most success I know of has been the use of air entraining agents in concrete. My experience is in roads and bridges. A 6% air entrainment (one was called Darex) dramatically improves the ability of concrete to withstand freeze-thaw cycles. Test specimens that I saw had been put through thousands of cycles. The non-air sample was pitted, spalled, pockmarked while the air mix looked pristine. The amont of air entraining agent is critical because it reduces the strength of the mixture (solid sand,and stone particles have been replaced by microscopic air voids).
There are hundreds of ways to improve strength and early development of strength. The biggest effect is overuse of the chemical h2o. Also, in the long run air entrainment maintains strength longer because of the durability increase.
Wiki User
∙ 12y ago
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