粉煤灰综合利用 2011No.5 FLY ASH COMPREHENSIVE UTILIZATION 专题研究 减水剂对C80PHC混凝土拉/压比的影响研究 Study on the Influces of Water-reducing Admixture on C80PHC Concrete Tension and Compression Ratio 何燕,张雄,张永娟 (同济大学材料科学与工程学院建筑材料研究所,上海201804) 摘要:以管桩生产配合比为基本参照,分别研究了萘系、聚羧酸、氨基磺酸盐和磺化丙酮等4种减水剂对C80PHC 混凝土抗压强度、劈裂抗拉强度,拉/压比以及密实性的影响。研究结果表明:不同品种减水剂对混凝土力学强度以及密 实性影响不同,其中掺磺化丙酮混凝土脱模强度较高而聚羧酸较低,掺聚羧酸混凝土拉/压比较大而磺化丙酮较小,掺 聚羧酸混凝土密实性较好;随着减水剂掺量的增加,混凝土的抗压强度提高;随着出釜放置时间的延长,劈裂抗拉强度提 高抗折强度提高拉压比增大。 关键词:减水剂;力学性能;拉/压比;吸水动力学参数;电通量 中图分类号:TU528.042*.2 文献标识码:A 文章编号:1005-8249(2011)05-0014-05 He Yan ,Zhang Xiong ,Zhang Yong-juan ( BuildingMaterial Institute ,School of Materials Science and Engineering ,Tongji University ,Shanghai 201804 ,China ) Abstract :On the basis of the ratio of pipe production line ,the effects of four different kinds of admixtures were studied ,by measuring the pressive strength ,splitting tensile strength ,tension and pression ratio and Conpactness of C8OPHC Conrete .The four admixtures are naphthalene ,polyethylene ,sulfonated acid and acetone sulphamate .The results show that the effects on mechanical strength and pactness differs with different kinds of admixtures .Concrete mixed with acetone sulphamat...
减水剂对C80PHC混凝土拉/压比的影响研究.pdf
