【作者】 李法冰；

【导师】 叶跃忠；

【作者基本信息】 西南交通大学 ， 桥梁与隧道工程， 2004， 硕士

【摘要】 随着旧有建筑物的逐步老化，一个新的问题摆在了工程人员面前—对旧有建筑物的加固。自20世纪70年代以后大量使用混凝土作为建筑材料，现在，这些建筑物大多数需要加固处理，在加固处理时不可避免的要涉及到加固时的薄弱环节—新旧混凝土界面过渡区，另一方面，在平时混凝土施工中先浇注的混凝土和后浇注的混凝土也存在界面问题，即常见的施工缝。本文从这一问题入手，以试验为手段，对新旧混凝土界面区进行了研究，在试验过程中我们研制了两种界面剂作为加固新旧混凝土时使用。 在试验过程中，我们采用了正交试验设计，大大减少了试验的数量而并没有影响试验的全面性。为了对比研究界面剂的粘结效果，我们在试验时同步进行了两种市售界面剂的试验，对试验结果我们采用了正交直观分析、延性分析、方差分析等分析方法，以全面考察我们研制的界面剂的性能。在试验和分析后，我们发现，对于无机材料，影响界面粘结的主要因素是硅灰，他的界面活性以及对界面的改性性能能够改善界面区性能，提高界面区的粘结能力；而对于有机材料，界面剂中掺入水对粘结能力是致命的，因此，不能在界面剂中掺入水，但，实际的施工面则允许有水，在有机界面剂中固化剂的掺量是至关重要的，它必须采用一个合适的掺量，才能使粘结效果达到最佳。 通过对有机、无机材料两种界面剂的试验研究和分析，我们发现有机材料的粘结效果可以达到工程的需要，无机材料的粘结效果要差一些。同时，通过对试验结果的分析，我们发现了影响无机、有机界面剂粘结性能的因素，这就给我们今后对界面剂的研制提供了参考。更多还原

【Abstract】 With the old building gradually aging, The repair and strengthening of old building has become an important engineering domain. From 1970’s, the engineering use large quantity concrete for building. Now, most of the buildinges needs to reinforcement and strengthening. But when we repair or reinforce the old building, we have to face to the frail zoo ?new to old concrete interfacial transition zone. The other side, in normal construction, the formerly cast concrete and later cast concrete also exsits interface problem, i.e. construction crack. The text commences from the problem, regarding experimenting as the means, proceeding the research to the new to old concrete interfacial transition zone. In experiment process, we researched two kinds of bonding-agent and use it to reinforce the new to old concrete structure.In experiment process, we adopted orthognal experiment. It reduced the experiment’s quantity consumedly, while didn’t influence the experiment comprehensive. In order to study bonding-agent’s gluing result, at the same time, we make some experiments about two kinds of selling bonding-agents. and, we adopted some analyzing methods for the experimenting rusult, such as analysis of orthognal experiment, analysis of ductility, analysis of variance, for completely investigating the two kinds of bonding-agents’ capacity, which we researched it. To inorganic material, after experi- menting and analyzing, we discovered the main factor was silicon ash, it affected interfacial bondage. Silicon ash’s interfacial activity can improve property of ITZ (interfacial transition zone), and improve ITZ’s bonding cappacity. Then in organism material, water in the bonding-agent is fatal. So, you can’t mix water with organism material bonding-agent. But the constructional face allows have some water. To organism material bonding-agent, the measure of stagnate agent is very important. Only it must adopt a fit measures, you can get the best bonding result.Based on the experiments and analysis about the organism, inorganic material bonding-agents, we found that organism material bonding-agent can satisfy engineering, but inorganic material bonding-agents is badly to it. At the same time, based on the analysis the experiment’s result, we discovered the factors that influenceing the two kinds of bonding--agents’ property. This provide some consults to research bonding-agent in the future.更多还原