承重粉煤灰砖砌体受压力学性能的试验研究

Study on Mechanical Performance of Compression Bearing Fly-ash Brick Masonry

近年来 ,许多文献对粉煤灰材料的应用作了大量的研究 ,但都没有对非蒸压承重粉煤灰砖进行过研究 .通过 3组 30个用非蒸压承重粉煤灰砖砌筑的标准试件的抗压试验 ,讨论了非蒸压粉煤灰砖砌体的裂缝发展特点和变形规律 ,根据 30个试件的抗压试验结果 ,建立了抗压强度计算公式 .结果表明 ,与普通砖砌体相比 ,该新型建筑材料具有相似的裂缝发展特点 ,极限荷载也相近 。

Recently, many researches about the application of fly ash brick have been conducted,but none of them are about non steam pressure and bearing brick. Based on the compression tests of 30 standard specimens which were made by non steam pressure and bearing fly ash brick and divided into 3 groups,this paper discusses the developing feature of crack and transfiguration law of fly ash brick masonry , finally establishes the calculation formula of strength of compression according to the testing result.The results prove that such new style building material has similar developing feature of crack and approximate limit loads compared with normal brick masonry, so that it can be regarded as a new bearing material of wall replacing of clay brick.