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Advances in Concrete Construction
  Volume 5, Number 4, August 2017 , pages 303-311

Mechanical behavior of concrete comprising successively recycled concrete aggregates
Surender K. Verma and Deepankar K. Ashish

    The concrete industry of developing countries like India consumes majority of natural resources. The increase in population has necessitated the construction of more and more structures. Further many structures have completed their life span or have undergone damages thus warranting the demolition of these structures. India produces approximately 23.75 million tons of recycled concrete aggregate (RCA) annually. The natural resources are depleting at a higher rate with the increasing demand of concrete industry. This difficulty can be reduced with the use of RCA in land fill and concrete manufacturing. Use of RCA can provide cost savings and better energy utilization. This paper presents mechanical behavior of concrete comprising successively recycled concrete aggregate. Mechanical properties of recycled concrete get affected with number of recycling. In mix design successive recycled concrete aggregate (SRCA) was used in place of natural aggregates (NA) with 100% replacement. The test results of the compressive, flexural strength and pulse velocity were obtained for 14 and 28 days of curing age which showed significant improvement in results.
Key Words
    recycled concrete aggregate; waste; strength; workability
Surender K. Verma: Department of Civil Engineering, PEC University Technology, Chandigarh 160-012, India
Deepankar K. Ashish: Maharaja Agrasen Institute of Technology, Maharaja Agrasen University, Baddi 174-103, India

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