Abstract
The use of recycled aggregate in any concrete saves the virgin coarse and fine aggregates to create for the production of concrete. This concept will deliver an ecofriendly, reduced eviction of natural resources and produce a green concrete concept. Coarse aggregate consists of more than 60% of total volume in ordinary concrete but only 40% is required for Self Compacting Concrete (SCC) by weight. Demolished concrete wastes which are crushed and sieved to the size are used as substitute for natural coarse aggregates. In this paper natural coarse aggregate in self-compacting concrete is replaced with 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% & 100% recycled aggregates in mix design. Furthermore, a detailed study on workability and hardened properties of specially proportioned mixes are also carried out and satisfactory results are obtained. Thus the derived SCC can come up with reduced CO2 emissions, economical and energy saving with all additional well-known advantages of fluid concrete.
Highlights
Fresh properties are studied by conducting tests such as slump flow test, T500 test, V-funnel test, L-box test in laboratory according to European guidelines (EFNARC)[6]
High performance super plasticizer based on Poly Carboxylic Ether (PCE) having trade name Master Glenium 8233 is used as chemical admixture
By comparing the results of 7th day strength, it is obvious that aggregate was developed confirming to EFRNARC specifications by trial and error method
Summary
Self-compacting concrete is a somewhat newly invented concrete that will have the following advantages over normally vibrated concrete. It will flow by its own weight without any compaction and completely fills the mould even in congested reinforcement joints. One of the primary challenges encountered by civil engineering industry is to accomplishing the work ecofriendly aspects. In this recent era, the construction industry has grown tremendously and produce a huge amount of wastes. The construction industry has grown tremendously and produce a huge amount of wastes These wastes compose of considerably large portion of total solid waste production in the globe. It has been reported that the international concrete industry consumes nearly a 10 billion
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