a. Design a concrete mix for construction of a water tank using ACI Committee 211.1-year 1991....

a. Design a concrete mix for construction of a water tank using ACI Committee 211.1-year 1991. The specified design strength of concrete is 30 MPa at 28 days. Standard deviation can be taken as 4 MPa. The specific gravity of fine aggregate and coarse aggregate are 2.65 and 2.7 respectively. The dry rodded bulk density of the coarse aggregate is 1600 kg/m3 and the fineness modulus of fine aggregate is 2.80. Ordinary Portland cement (Type I) will be used. A slump of
50 mm is necessary. Coarse aggregate is found to be absorptive to the extent of 1% and free surface moisture in the sand is found to be 2 percent. Assume any other essential data.
b. If slump value increase to 100 mm, design concrete mixing using the same data.
Compare and discuss the result.

Expert Solution

now if the slump increse to 100 mm then the workabelity of the concrete will increse and the strenght of the concrete will decrease

Ally Wells answered 1 year ago

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