Recycled Aggregate Performance Experiment Study on Basis of Saturated Surface Dried Crush Value Index

Abstract:

Crush value index is a key parameter for measurement of coarse aggregate strength performance. In this paper the eight group of crush value index are tested for the recycled aggregate used of waste concrete which is gathered from three different remove construction plants. The experiment analysis result is shown that the crush value of recycled aggregate is greater 2.5 times than natural aggregate. Meanwhile, compared with air dried condition, the crush value index of saturated face dried condition is from 7.22% to18.2%. Furthermore the recycled aggregate can be suitable to make concrete requirement which compression strength grade is C35 and lower than C35 in China. In the experiment, comparative analysis is found that the RA-10 aggregate compressive strength is slightly from 2.06% to 8.7%. Those which are higher limit value of standard for test method of mechanical properties on ordinary concrete and the divergence are less than 10%. Consequently the recycled aggregate can be used for concrete, and its compressive strength is also fundamentally satisfied for requirement of concrete compressive strength.

• Periodical: Advanced Materials Research (Volumes 374-377)
• Pages: 1641-1645
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.374-377.1641
• Online since: October 2011
• Authors: Bo Zhang, She Liang Wang, Yuan Fang Du, Long Ping Jing
• Keywords: Air Dried Condition, Compressive Strength, Crush Value Index, Recycled Aggregate (RA), Recycled Aggregate Concrete (RAC), Saturated Surface Dried Condition

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