Experimental Investigation on PCE and SNF Type Admixture on Early Age Strength of M40 Grade Green Concrete

Super plasticizers are chemical admixtures used where well-dispersed particle suspension is required. Its application in concrete facilitates the reduction of the water with respect to the cement ratio without adversely influencing the workability of the concrete sample. Nowadays, due to rapid constructions there is a huge demand for the use of chemical admixtures. Among these admixtures, super plasticizer poly carboxylic ether (PCE) and naphthalene formaldehyde sulphonate (SNF) has great market relevance. The optimum dosage of the admixture is to be determined and the percentage reduction of water content is also noted. Various tests are conducted on the sample at different mix proportion and at different age as per code specifications. Perlite, which is a type of amorphous volcanic glass, is replace with fine aggregate at optimum dosage of the super plasticizer and strength is determined [1]. Perlite addition will results in green concrete of superior strength, fire resistance, acoustic properties, thermal insulation, HVAC conditions along with the replacement of conventional materials used in concrete. This research investigates on the determination of optimum dosage of super plasticizer and possible replacement of fine aggregate with perlite for sustainable concrete.