Sustainable use of granite waste and silica fume in the production of self-compacting concrete
Author(s):
P. Lohitha
Keywords:
Granite cutting waste, Silica fume, and Self-compacting concrete
Abstract
Continuous stockpiling of granite industrial by-product enforced researchers to use this waste in a sustainable manner in concrete to reduce its adverse impacts on the ecosystem. On the other hand, self-compacting concrete (SCC) is being widely used which requires a higher quantity of cement and ultimately resulting in the substantial CO2 emission to the environment. The aim of this study is to produce economical, eco-efficient, durable, sustainable, and high-strength SCC using granite cutting waste (GCW) and silica fume (SF). This would help to beneficially use SF and minimize the need to use large quantities of cement in high- strength SCC production, thus significantly reducing CO2 emissions. Therefore, fresh, and hardened properties of self-compacting concrete (SCC) containing GCW and SF were assessed in this study. The GCW and SF was used at an increased step level as replacement of fine aggregate (i.e., river sand) and cement respectively up to an optimum limit. Slump flow, T500 time, V-funnel, L-box, and J-ring tests were performed to assess the fresh properties of SCC mixes, whereas, compressive strength, flexural strength, ultrasonic pulse velocity, water absorption and water permeability tests were conducted for measuring the hardened properties of SCC mixes. The microstructural investigation was carried out using the Scanning electron microscope (SEM) and X-Ray diffraction (XRD) techniques. This project report deals with the different studies done in the field of SCC regarding feasibility of GCW as a partial replacement of natural fine aggregate and inclusion of SF as partial cement replacement in the production of SCC. The use of GCW and SF improves the fresh and hardened state characteristics of concrete.
Article Details
Unique Paper ID: 162023

Publication Volume & Issue: Volume 10, Issue 7

Page(s): 323 - 329
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