The effect of concrete grain sample on chloride physical adsorption and chemical binding were tested in chloride solution,and the influences of water-cement ratio(w/c) and cement content on chloride binding capacity were studied.
测定了混凝土颗粒样品与氯化物溶液之间的物理吸附和化学结合作用,研究了混凝土的水灰比和水泥用量对其氯离子结合能力的影响规律。
For slag concrete,the total Cl-binding capacity,physical adsorp-tion capacity and chemical binding capacity were calculated,and the influence of slag content on the Cl-binding capacity of concrete was investigated.
用等温吸附法测定了混凝土在系列氯化钠(NaCl)溶液中的平衡氯离子(Cl-)浓度,计算了矿渣混凝土对Cl-的总结合能力、物理结合能力和化学结合能力,研究了矿渣掺量对混凝土Cl-结合能力影响的规律。
The results show that by comparing with the blank sample,the performance of mortar solidifying chloride,especially its chemical binding capacity of chloride is strengthened by addition of fly ash.
结果表明:与基准砂浆相比,粉煤灰掺量增加,砂浆固化Cl-性能增强,特别是对Cl-的化学结合能力;在本试验范围内掺入硅灰对砂浆固化Cl-性能影响不显著;粉煤灰与硅灰双掺能够进一步提高砂浆固化Cl-性能;随着龄期的增加,砂浆对Cl-固化能力和化学结合能力均下降,物理吸附能力提高,但到一定龄期后,无论是化学结合量还是物理吸附量都趋于稳定。
Studies on hydration heat, breakage strength and content of chemical bond water in cement-gangue compound neat mortar show that amount of gangue blended in cement mortar and its activation degree play important role in hydration process of cement/gangue compound system.
通过对掺煤矸石水泥复合净浆体系水化热、抗压强度和化学结合水含量的测定研究了煤矸石的掺量、活性高低对水泥-煤矸石复合体系水化进程的影响。
The degree of hydraulicity of hardened cement pastes added with assistant cementitious materials such as coal gangue were obtained by determining the chemical combined water content.
采用化学结合水的方法测定了高性能水泥-煤矸石体系硬化浆体的水化程度,用盐酸选择性溶解的办法测定了体系中煤矸石的反应程度,同时用差示扫描量热法测定了煤矸石的活性反应对体系中Ca(OH)2含量的影响。