Effects of calcium nitrate in sugar cane bagasse ash and partial replacement of fine aggregate by stone dust

Abstract

This research work has been focused on the early age setting properties of Sugar cane bagasse ash (SCBA) substituted concrete and also monitored the rate of strength gain for different mixes. The waste by-product materials SCBA were replaced 0 to 30% by weight of binding materials in Portland cement with 0 to 3% of calcium nitrate type of accelerator had shown a consistent increase in the rate of setting. It can also be noted that the rate of hardening is higher with addition of 1% accelerator with 20% SCBA accelerates the pozzolanic reactions leading to additional gel formation of C-S-H and C-A-H that leads to the early age of hardening. The test results showed the better improvement in early stage of compressive strength for M25 grade of concrete attained at 3 days up to 34.15 MPa. The preliminary results were enough encouraging that these waste by-products materials were used to produce the quality of structural concrete without affecting their durability and lifespan.