Study on basic mechanical properties of EPS-cotton straw fiber perforated lightweight composite block masonry
In order to promote the engineering application of the three-low composite block wall structure utilizing local coal-based solid waste resources and cotton stalk fiber resources in low-rise buildings in rural areas of Xinjiang,a total of 57 composite masonry speci-mens(27 under compression and 30 under shear)were subjected to compressive and shear strength tests,with mortar strength and per-forated material strength as variables.The failure process,failure mode characteristics,compressive and shear strength of the specimens were analyzed.The results showed that when the ratio of mortar strength to block strength was less than 1.6,the improvement of mortar strength had a significant impact on the compressive strength of the three-low composite masonry.The core material contributed the most to the compressive and shear strength of the composite masonry,and the contribution continued to increase with the increase of the core column strength.Based on the actual strength determination method of masonry,suggested formulas for the average compressive strength and shear strength applicable to the three-low composite block masonry were established and fitted.The research results have certain reference value for understanding the basic mechanical properties of EPS-cotton stalk fiber perforated composite concrete block masonry and provide a scientific theoretical basis for its practical application in engineering.
coal-based solid wastethree-low type blocksdestruction patternscompressive strengthshear strength
NETL
NSTL
万方数据
