界面剂对第二龄期新老混凝土粘结劈拉强度影响

发布时间：2018-05-08 12:58

本文选题：新老混凝土 + 粘结剂　；参考：《水力发电》2017年06期

【摘要】：为分析不同界面剂对新老混凝土的粘结效果,选用普通硅酸盐水泥混凝土、矿渣水泥混凝土和复合型水泥混凝土作为试验混凝土,选择水泥净浆、掺粉煤灰的水泥净浆和掺TG-1固结剂的水泥净浆作为试验粘结剂进行了劈拉强度试验。试验结果表明:水泥净浆界面剂粘结效果总体上随着水灰比的增加而减弱;掺粉煤灰的水泥净浆作为界面剂时,粉煤灰的掺量在20%~40%时粘结效果最好;掺TG-1固结剂的水泥净浆的粘结效果是随着TG-1固结剂掺量的增加而增强。
[Abstract]:In order to analyze the bonding effect of different interfacial agents on new and old concrete, common Portland cement concrete, slag cement concrete and composite cement concrete were selected as test concrete, and cement paste was chosen. The splitting tensile strength of cement paste with fly ash and cement paste with TG-1 consolidation agent was tested. The experimental results show that the bonding effect of cement paste interfacial agent decreases with the increase of water-cement ratio, and when fly ash is used as interfacial agent, the binder effect of fly ash is the best when the content of fly ash is 20 ~ 40. The bonding effect of cement paste mixed with TG-1 is enhanced with the increase of the amount of TG-1 consolidation agent.
【作者单位】：郑州大学水利环境学院;
【分类号】：TU528.01

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