This is all about concrete mix ratios which is commonly used for building construction. Grade 15, grade 20 and grade 25 are the three different types of ratios. Please watch the video carefully to take the fully understanding!!
#civilconstruction #civilengineering #concretemixratio.
Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. [ Ссылка ]
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