Research on the Detection Method of Irregular Particle Content in Coarse Aggregate
The definition of coarse aggregate irregular particles and the optimization of detection methods were studied.By changing the screen width of the bar screen,the detection rate of irregular particles,the workability and compressive strength of concrete after removing irregular particles and the interfacial pore structure of the bar screen were compared,and the most suitable screen width was determined according to the test results.The results show that,compared with the national standard(0.50 times),the bar sieve with the screen width of 0.55 times the average particle size of the coarse aggregate particles has higher screening efficiency,more reasonable evaluation of irregular particles,and the performance of the concrete with regular particles is the best.
万方数据
维普
