Restructuring of the Rigid Pavement by Reclaimed Demolished Waste

Roadway construction companies are under pressure to use more environmentally friendly “clean and green” technologies in this age of global warming. The urban development has increasingly generated solid waste materials during construction and demolition site. It is possible to reuse of construction and demolished waste material to reduce the cost of production of new materials, and also it reduces the consumption of natural resources. The purpose of this study is to reuse demolished concrete as an alternative to natural coarse aggregate in rigid pavement. The aim of this study to prepare economical concrete pavements by reclaimed demolished waste. The laboratory tests were conducted to determine and compare the compressive strength, flexural strength, and workability of concrete by using different percentages of demolished waste concrete. The investigations are carried out by using workability test, compressive strength, and flexural strength. The coarse aggregate was replaced by demolished waste concrete with a total of five mixes 0%, 25%, 50%, 75%, and 100%, respectively. During the workability test of concrete, It was observed that the workability of concrete meets standard true slump for M40 design of concrete as per IS 10262-2009 after using demolished concrete waste with thereplacement of natural coarse aggregate. The average compressive strength has taken for both natural coarse aggregate and demolished concrete; the results showed that the strength of demolished concrete was comparable to the strength of natural aggregate concrete.