IMPACT OF COPPER SLAG AND FLY ASH ON PROPERTIES OF INTERLOCKING PAVER BLOCK by Aviral Modgil
Abstract
In modern era of infrastructure structural development the consumption of cement and sand has increased drastically. Across the world utilization of sand as a fine aggregate in concrete mixture is quite high which has in turn strained natural sand reservoirs in several developing nations whose infrastructural development is made very rapidly in recent years. And cement production produce CO2 and other greenhouse gases. The use of Copper slag and fly ash is aimed at reducing sand content and cement content respectively. Addition of copper slag results in increased durability, enhanced compressive, split tensile strength and abrasion resistance of concrete. By adding fly ash heat required for hydration is reduced resulting to better durability. Partial replacement of concrete by fly ash proportionally reduces the use of cement in paver blocks which further results in significant control of CO2 emission from cement industries and as well provides an effective utilization of fly ash which is a thermal power plant by-product. In order to resolve problems faced due to environmental and operational constraints against conventional construction techniques (by utilizing hot bituminous mixture or cement concrete mix) for construction of pavement, footpath and parking etc. ICBP were used. I-shape concrete blocks were casted and examined for compressive strength, flexural strength, split tensile strength, water absorption and for abrasion resistance. Concrete blocks were made of conventional concrete as well as copper slag admixed concrete. Results show that by addition of copper slag (25%) and fly ash (20%) compressive strength increased for all the grades of concrete. Split tensile strength and flexural strength also increased. Other quality of blocks also improved.
