Experimental study on compressive strength of recycled aggregate thermal insulation concrete
LI Kang
LIU Yuanzhen
ZHAO Min
GUO Yaodong
ZHAO Yu
Abstract：Six different kinds recycled fine aggregate substitutive ratio of recycled fine aggregate thermal insulation concrete (RATIC) are tested on compressive strength,meanwhile normal distribution probability density curve is obtained on the basis of the test to analyze the compressive strength of RATIC and its characteristics of change. Research shows that when the recycled fine aggregate substitutive ratio is less than 80%,7 d and 28 d compressive strength of RATIC increase with recycled fine aggregate substitutive ratio increasing,the maximum compressive strength of 7 d and 28 d is about 33.1 MPa and 35.4 MPa respectively. The standard deviation of 7 d compressive strength is stable at around 1.65±0.3 MPa and the substitution rate has little influence on it. The standard deviation of 28 d compressive strength increases with the growth of substitutive ratio,and when the substitutive ratio is 20%,the standard deviation is 3.34 MPa. It is able to meet the minimum demand of GB/T 50107—2010 and JGJ 55—2011 for the standard deviation,so the standard deviation can remain the same as it is actually measured.
Keywords：recycled fine aggregatethermal insulation concretesubstitutive ratiocompressive strengthdispersion
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 76-78 )