Concrete Mix Design M25 SCC [IS CODE]
In order to determine the mix design quantities of different ingredients for a particular grade of concrete, few steps are required which are as follows: 1. Determine the target compressive strength The target compressive strength can be calculated by the following formula T fck = T cs + 1.65 SD ……… [IS CODE: 10262-2009] Where, T fck is the target compressive strength of concrete. T cs is the compressive strength of concrete. SD is the Standard deviation. T he grade of concrete to be designed is M25, then T fck = 25 + 1.65 x 4 = 31.6 N/mm 2 2. Determine the water-cement ratio of the mix & free water content. Determining the water cement ratio is critical for any mix design, no IS Code states any particular w/c ratio for any given mix. I
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