【作者】 逄鲁峰；

【导师】 王栋民；

【作者基本信息】 中国矿业大学（北京） ， 矿物材料工程， 2013， 博士

【摘要】 高吸水树脂内养护技术是高强和高性能混凝土技术的一个重大变革，对提高混凝土力学性能、耐久性等都具有重要作用。本文通过大量试验系统地研究了高吸水树脂掺量、额外引水量等因素对多种胶凝材料体系混凝土的力学性能、体积稳定性、抗冻性能及膨胀性能的影响规律，并从微观层次对高吸水树脂内养护高性能混凝土的水化产物及水化机理进行了研究分析。建立了基于二维正态分布的高吸水树脂内养护混凝土的抗压强度预测模型，为高性能混凝土配合比设计提供了重要的依据；通过高吸水树脂内养护混凝土内部湿度场的建立，为混凝土体积稳定性的定量分析提供了有效途径；研究了高吸水树脂掺入水泥、矿粉和粉煤灰不同组合体系中的抗冻融效果和作用机理；通过不同龄期混凝土的微观试验揭示了高吸水树脂对水化产物及其进程的影响；探讨了高吸水树脂掺量及额外引水量等因素对高性能混凝土膨胀与强度协调发展的影响规律。更多还原

【Abstract】 Super Absorbent Polymer (SAP) internal-curing method is a significant change inthe high-strength and high-performance concrete technology. It plays an importantrole in improving mechanical properties and durability properties of concrete. Thispaper made a systematic study on the law of SAP dosage and additional amount ofwater which influence mechanical properties, volume stability, frost resistance andexpanding properties of a variety of cementitious materials system of concretethrough a large number of experiments. And hydration products and hydrationmechanism of SAP-HPIC was studied and analyzed on the micro-level. Theprediction model of compressive strength of SAP-curing concrete based ontwo-dimensional normal distribution was established, which is an important basis ofthe high-performance concrete mix design. Through the establishment of theSAP-curing high performance concrete internal humidity field, an effective way wasfound for the quantitative analysis of the volume stability of concrete. The study onanti-freezing effect and mechanism of SAP mixing with cement, slag and fly ash ofdifferent combinations of system revealed the effects of SAP on hydration productsand the hydration processes of the concrete with different ages. The principles of thecoordinated development of expansion deformation and strength development ofhigh-performance concrete were discussed and paramemeters of SAP content andadditional amount of water were determined.更多还原