Mix Proportion Design and Material Requirements of Road Recycled Aggregate Concrete

Feng Xiang Deng; Sheng Li

doi:10.4028/www.scientific.net/AMR.661.171

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 661Mix Proportion Design and Material Requirements of...

Mix Proportion Design and Material Requirements of Road Recycled Aggregate Concrete

Abstract:

When the recycled aggregate is crushed, many micro-cracks can be observed and some grout can remain on it. The aggregate therefore severely absorbs water when it is later mixed with concrete. The impact of water-binder ratio on strength becomes different from that of the ordinary concrete, and the ratio can no longer be used to evaluate the strength accurately. To solve this problem, this paper describes the mix proportion design method of recycled aggregate concrete, including the requirement of mix proportion design, the calculation for mixing proportion parameters and the technical requirements of recycled aggregate, natural aggregate, fly ash and admixtures. The manufacture of specimens is also described. This work provides guidance for the proper design of mix proportion of recycled aggregate concrete.

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Periodical:

Advanced Materials Research (Volume 661)

Pages:

171-174

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.661.171

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Online since:

February 2013

Authors:

Feng Xiang Deng, Sheng Li

Keywords:

Experimental Study, Fundamental Characteristic, Gradation, Recycled Aggregate (RA), Road Engineering

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