Towards Greener Construction: Assessing the Mechanical Properties of Concrete with Demolition Waste and Quarry Dust Blends

• Published in: Journal of physics. Conference series 2024-06, Vol.2779 (1), p.12045
• Main Authors: Sree Kumar, K, Prasad Bokka, Durga Vara, Manne, Manikanta, Alisha, Sk Subhan, Rambabu, P
• Format: Article
• Language: English
• Subjects: Admixtures; Compressive strength; Concrete mixing; Concrete properties; Construction industry; Demolition; Demolition Waste; Dredging; Dust; Foundry sands; Mechanical properties; Parameters; Quarries; Quarry dust; River beds; River Sand; Soil erosion; Soil mechanics; Stone; Strength; Sustainability
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/2779/1/012045

Concrete is a mass resembling stone prepared by pouring Cement, fine sand, and water into moulds and hardening them. It is well known that adding the right mineral admixtures with cement in the appropriate proportions enhances a number of concrete properties. The construction industry has been expanding at a rapid pace, to meet the growing demands of new infrastructure in various countries around the world for the past two decades. The fine aggregate used in all construction projects is river sand, which is dredged from riverbeds. There is an increasing need for river sand replenishment since increased riverbed dredging may cause soil erosion, coastal erosion, and environmental deterioration. River sand is substituted in concrete with ceramic grains, quarry stone dust, copper slag, foundry sand, and other components. Quarry dust and demolition waste are used together to create stronger concrete. This is then compared to regular concrete to see if the results are worth the extra effort. Even though the mixes presented promising strength parameters, these strength parameters were seen decreasing with the increase in percentage of replacement. Concrete mixes containing 25% of demolition waste and quarry dust replacement reported greater strength in compression, Splitting Tension & Flexure than the other concrete mixes with varying percentage of replacement.