A Comparative Study On The Compressive Strength Of Concrete For Different Coarse Aggregate Under Various Curing Conditions

Abstract

Concrete is a mixture of cement, sand and stone chips in some specified proportion which is generally used for R.C.C and C.C. We have worked on a comparative study about the effect of membrane curing of concrete. Firstly, 36 concrete cylinders of 4 x 8 inch were made and twelve of them were cured continuously in the bathtub for immersion method. Another twelve of the cylinder was covered with jute membrane like the local construction side and cured 2 hours to 3-hours intervals. Rest of them without any covering cured 2 hours to 3-hours intervals. Curing were done for 7 days and 28 days. Mixing and curing water is one of the components required, and it should be suitable for producing concrete. In this study two different stone type used to observe the difference effected concrete with various curing method. Curing is essential if concrete is to perform the intended function over the design life of the structure while excessive curing time may lead to the escalation of the construction cost of the project unnecessary delays. The new tread of using high strength concrete in construction has caused a need for the use of 4 x 8 in. Cylinders for assurance testing. A controlling factor that affects the curing of specimen that can be tested in compression machine is the strength of the concrete on evaluation. In this study, it is observed that The Indian pakur stone gave better compressive strength value in both spraying curing method (14.809 MPa) and wet covering (14.470 MPa) method for 7 days’ test. The wet covering method of curing gave high compressive strength (27.770 MPa) for 28 days curing test. The study demonstrates that the method and duration of curing greatly affects the strength characteristics of concrete. Hence, quality control for proper field curing is the utmost importance.