To study the use and effect of phyllite as clinker replacement in cement manufacturing

Abstract

Abstract Supplementary cementitious materials or SCMs are oftenly used as substitute of conventional Portland cement to reduce carbon footprint of cement industry while improving strength of cement. The benefit to ‘reduce the clinker content’ in cement products has two advantages. Primarily it promotes to reduce the thermal energy consumption and CO2 emissions linked with clinker production in rotary kilns. It is widely known that on production of 1 Ton of clinker generates over 800–820 kg of CO2. The secondary motivation is to conserve the limestone resources by reduce consumption through judicious utilization towards sustainable development. Majorly the research to minimize environmental impact of cement manufacturing is done on industrial byproducts such as fly-ash, silica fumes & slag to be used as SCM but this paper utilizes the Phyllite which is a mine waste generated during extraction & quarrying and is dumped unattended in the landfills near the mines. Calcined phyllite was characterized through various laboratory tests such as Particle Size Distribution, X-ray Fluorescence, XRD and TGA. In the present study, Clinker was partially replaced in cement manufacturing with 2%, 4%, 6%, 8% & 10% by weight with calcined Phyllite as mineral admixture. The Physiochemical testing of designed cement samples were done as per IS 4031 & IS 4032 respectively. The strength and durability test such as compressive strength, flexural strength, and durability test were conducted on the Phyllite cement mortar cubes and results were compared with the control cubes of blank cement mortar of OPC 43 grade.