论文部分内容阅读
该文主要研究了灰集比、集料级配与水灰比对多孔混凝土空隙率、抗压强度和劈裂强度的影响,研究结果显示:随着灰集比减小,多孔混凝土空隙率不断增大,抗压强度、劈裂强度不断减小;集料粒径510mm数量一定时,随着2025mm粒径集料减少,1016 mm粒径集料增加,多孔混凝土空隙率不断减小,抗压强度及劈裂强度不断增大;随着水灰比增大,多孔混凝土空隙率先减小后逐渐增大,其强度先增大后逐渐减小;多孔混凝土7d抗压强度与28d抗压强度、空隙率与抗压强度、劈裂强度与28d抗压强度之间都具有很好的线性相关性。
In this paper, the effects of aggregate ratio, aggregate gradation and water-cement ratio on the porosity, compressive strength and splitting strength of porous concrete are studied. The results show that the porosity of porous concrete keeps constant The compressive strength and the splitting strength decrease continuously. With a certain number of aggregate particles of 510mm, with the decrease of aggregate size of 2025mm, the aggregates of 1016mm particle size increase, the porosity of porous concrete decreases, The strength and splitting strength of the porous concrete gradually increased with the increase of the water-cement ratio. The porosity of the porous concrete first decreased and then increased gradually, and then increased gradually and then decreased gradually. The compressive strength of 7d porous concrete and 28d compressive strength, There is a good linear correlation between porosity and compressive strength, splitting strength and 28d compressive strength.