二灰碎石强度的再生性

An Analysis on the Test of Lime-fly Ash Bound Macadam's Strength Regenerate Peculiarity

选择10种不同级配石灰粉煤灰稳定碎石混合料,分别进行7d、14d、28d龄期破坏试验,养生30d、60d和90d后,测定其无侧限强度。对影响石灰粉煤灰稳定碎石混合料强度再生的主要影响因素进行分析。研究了石灰粉煤灰稳定碎石混合料强度再生的特性,结果表明,石灰粉煤灰稳定碎石混合料再生强度随着集料粒径的增加而降低,随破坏时龄期的增长而减少。

Ten different kinds of grading about limefly ash bound macadam were selected for a test 7 d,14 d and 28 d,then the unconfined compressive strength was measured after being maintained 30 d,60 d,and 90 d.The result showed that limefly bound macadam had strength regenerating peculiarity.Then the main factors of the influences on its regenerating compressive strength were made.At the same time,the features of regenerating compressive strength of limefly ash bound macadam were also analyzed.The result showed that the regenerating compressive strength was lower along with the size of aggregate's gain,and decreased along with the breakage's period of increase.