地质聚合物无机胶黏剂的应用研究

发布时间：2018-03-20 09:31

本文选题：偏高岭土　切入点：地质聚合物　出处：《长沙理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：偏高岭土基地质聚合物材料作为无机材料,既具有有机材料、陶瓷、水泥等材料的优良性能,又具有原材料丰富、工艺简单、价格低廉、节约能源等优点,与传统水泥相比,具有节能、环保的特点,是潜在的一种绿色建筑材料。本文通过理论与试验相结合对其进行性能研究,从而尝试以偏高岭土基地质聚合物代替环氧树脂应用于结构的加固工程之中。本文研究工作的主要内容如下:(1)将山西煤系高岭土高温煅烧活化之后得到的偏高岭土与碱性激发剂混合得到偏高岭土基地质聚合物胶凝材料。通过正交试验,研究改性水玻璃模数、激发剂掺量、固化温度和固化时间对偏高岭土基地质聚合物胶凝材料的7d和28d强度的影响规律,最终遴选出最佳的配合比;通过极差分析,研究此四个因素对偏高岭土基地质聚合物胶凝材料7d和28d抗压强度影响效果的强弱关系;(2)通过混凝土表层嵌贴FRP的单剪试验,研究地质聚合物无机胶黏剂和环氧树脂有机胶黏剂经高温处理后的FRP-混凝土之间界面粘结性能。研究表明:环氧树脂有机粘黏剂对高温的敏感度要高于地质聚合物无机粘黏剂,即随着处理温度的升高,环氧树脂粘黏剂单剪试件的极限抗拉强度呈减弱趋势,而地质聚合物粘黏剂试件的极限抗拉强度无明显变化;在此次试验中,除了试件SK-120由于开槽处理不当出现胶层与混凝土之间的剥离破坏外,其余试件的破坏形态均为FRP与胶层之间的剥离破坏。
[Abstract]:As inorganic materials, metakaolin base polymer materials have the advantages of organic materials, ceramics, cement and so on, and have the advantages of abundant raw materials, simple technology, low price and energy saving. It is a potential green building material with the characteristics of energy saving and environmental protection. In order to try to replace epoxy resin with metakaolin base polymer in the strengthening project of structure. The main contents of this research work are as follows: 1) the kaolin of Shanxi coal measure after calcining and activating at high temperature to get partial kaolinite. The base polymer cementitious material of metakaolin is obtained by mixing soil with alkaline activator. The effects of modulus of modified sodium silicate, amount of activator, curing temperature and curing time on the strength of metakaolin base polymer cementitious material were studied. The influence of these four factors on the compressive strength of metakaolin base polymer cementitious materials was studied. The interfacial bond properties between geopolymer inorganic adhesives and epoxy resin organic adhesives treated at high temperature were studied. The results showed that the sensitivity of epoxy resin organic adhesives to high temperature was higher than that of geopolymer inorganic adhesives. That is, with the increase of treatment temperature, the ultimate tensile strength of the single shear specimen of epoxy resin adhesive tends to weaken, but the ultimate tensile strength of the geopolymer adhesive specimen does not change obviously. Except for the debonding failure between the rubber layer and concrete due to the improper slotted treatment of the specimen, the failure pattern of the other specimens is the peeling failure between the FRP and the rubber layer.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU526

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