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Study on Mechanical Properties of Microbead Modified Super Sulfate Cement Concrete

机译：微珠改性超硫酸盐水泥混凝土力学性能研究

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The microbead modified super sulfate cement (SSC) was employed to prepare C60-C80 concrete, this work emphasis on mechanical properties and micro-mechanism, besides, the service behaviors of fresh concrete was tested. The SSC concrete mechanical properties influenced by particles size of microbead, slag and gypsum were discussed. Mechanisms of mechanical properties changes were elaborated from micro, meso and macro scales, mechanical model was established and relevant rules of mechanical properties development were obtained. Experiment results show that compressive strength increased with the largerer specific surface area of microbead, slag powder and gypsum. There was a promoting effect for SSC concrete hydration reaction by appropriate dosage (10%~20%) of microbead, which had prominent interstitial effect and system with excellent gradation, and fresh concrete workability was significantly improved. The compressive strength-curing ages model of high strength SSC concrete was established by half value intensity index, which coincide well with measured values.
机译：使用微珠改性的超硫酸盐水泥（SSC）制备C60-C80混凝土，这重点是机械性能和微机制，此外，测试了新混凝土的服务行为。讨论了受微珠，渣和石膏颗粒尺寸影响的SSC混凝土机械性能。机械性能改变的机制从微观，中索和宏观尺度阐述，建立了机械模型，获得了相关的机械性能规则。实验结果表明，抗压强度随着微珠，渣粉和石膏的较大比表面积增加。通过适当剂量（10％〜20％）微珠的SSC混凝土水合反应促进了促进效果，其具有突出的间质效应和具有优异的灰度的系统，并且显着提高了新的混凝土可加工性。通过半值强度指数建立了高强度SSC混凝土的压缩强度固化年龄模型，其与测量值相一致。

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