Open AccessUtilization of jarosite in precast concrete paver blocks
Author(s) -
Sumit Nandi,
G.D. Ransinchung
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1075/1/012024
Subject(s) - jarosite , durability , cementitious , cement , compressive strength , flexural strength , abrasion (mechanical) , precast concrete , waste management , environmental science , absorption of water , materials science , civil engineering , metallurgy , composite material , engineering , geology , mineralogy
Sustainability has become the major concern for the construction industry in the recent era. Concrete stands as a versatile construction material, but cement being its main constituent poses a threat to the environment consuming a huge amount of energy and emanating CO 2 and other greenhouse gases in its production process. On the other hand, the extraction of natural resources for construction works has been disrupting the environmental and ecological balance due to a huge accumulation of waste or by-products. So the major concern of the hour is the formulation of a mitigation strategy to fight this uncontrolled quantum of construction and its resulting consequences. The main objective of this present study is the utilization of jarosite, a hazardous solid waste, as a replacement of cement in concrete paver blocks. Six concrete mixes were prepared to keep the water-to-cementitious material ratio fixed at 0.43. The replacement of cement with jarosite was carried out at five replacement levels (0 – 25%) in an increment of 5%. Mechanical properties (compressive and flexural strength) and durability properties (water absorption and abrasion resistance) of the jarosite incorporated paver blocks were determined and compared to the control specimens. Experimental results indicate that mechanical and durability properties improve with the incorporation of jarosite, which could be attributed to a much developed packing of the jarosite concrete mix.