水泥混凝土用粗集料针片状颗粒含量试验研究

摘要

众所周知,粗集料的颗粒形状,尤其是针片状颗粒对水泥混凝土性能有着显著影响.国家标准对此项指标有着严格限制,限制指标为针片状颗粒的总含量.然而,针片状的粒径大小对水泥混凝土性能的影响不容忽视.在相同情况下,针片状颗粒愈大,对水泥混凝土性能影响愈大.故在进行针片状颗粒含量测定时,有必要考虑不同粒径针片状颗粒对水泥混凝土性能的影响,本文对此想法进行研究,提出一些有价值的结论.%As we all know, coarse aggregate particle shape, especially on the concrete flat-elongated particles have a significant impact on performance. National standards for this indicator has a strict limit,restrict index to the total content of elongated particles. However, the flakiness of the particle size, of cement concrete properties can not be ignored. In the same circumstances, the greater the flat-elongated particles, the greater the impact on concrete performance. Therefore, during the determination of elongated particles, it is necessary to consider elongated particles of different sizes of cement concrete properties,this study this idea,some valuable conclusions.