Utilization of jarosite in precast concrete paver blocks

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 i...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-02, Vol.1075 (1), p.12024
Main Authors: Nandi, S, Ransinchung, G D R N
Format: Article
Language:English
Subjects:
Abrasion resistance
Cement constituents
Compressive strength
Concrete blocks
Construction industry
Construction materials
Durability
Flexural strength
Greenhouse gases
Hazardous wastes
Jarosite
Mechanical properties
Natural resources
Precast concrete
Reinforced concrete
Water absorption
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Summary: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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1075/1/012024