大掺量粉煤灰混凝土回弹测强曲线的试验研究

Experimental study on rebound strength curve of concrete with Large volume of fly ash

本文通过回弹法研究了不同水灰比、粉煤灰不同掺量对混凝土抗压强度、回弹值及碳化深度的影响,建立了粉煤灰混凝土回弹测强曲线。结果表明:掺加15%粉煤灰混凝土的回弹值及抗压强度最大;建立的粉煤灰混凝土测强曲线满足地区测强曲线误差要求。

The effect of different water-to-cement ratio and fly ash content on the compressive strength, rebound value and carbonization depth of concrete were studied by rebound method. The rebound strength curve of concrete with fly ash was established. The results show that the rebound value and the compressive strength of the concrete with 15% fly ash are the largest, the strength curve of the concrete with fly ash established satisfies the error requirement of the regional strength curve.