Modeling compressive, split tensile strength and chloride ion penetration of concrete incorporating marble powder

Abstract

The use of recycle materials as concrete ingredients has gained popularity because of increasingly stringent environmental legislation. This research paper check the possibility of replacement of sand (Fine aggregate) by marble powder recovered from marble slurry waste of marble processing units from 0% to 20 %, in production of concrete. This Research paper explore the mathematical modeling of compression strength of concrete cube specimens cured at 7 & 28 days, Split Tensile Strength at 28 days and Chloride penetration resistance of cylindrical concrete specimens cured at 28 days incorporating Marble Powder. Experimental investigation done on various concrete specimens to acknowledge compressive, split tensile strength and chloride penetration. Ordinary Portland cement (OPC) has been substituted with 0%, 10%, 15% and 20% by Marble Powder than after Concrete Cubes & cylindrical specimens prepared accordingly. Compressive strength test, Split Tensile Strength Test has been done concrete specimens and Rapid chloride permeability test (RCPT) has been done on cylindrical specimens. Three predictive regression models has been developed, one for compression strength (CS) of concrete cubes at 7, 28 days and second one for split tensile strength (STS) of concrete samples at 28 days age and last model for RCPT value i.e. charge passed Q@28days in cylindrical concrete specimens. Chloride penetration predictive Model Q @ 28 Days has value of 0.93, 0.69, 200.11 and 0.022 for R Square, Adjusted R Square, Standard Error, and P value. All predictive math models has been confirmed by data in complete range and has superior precision, correlation with experimental data and results.