树脂导光混凝土的制备方法与力学性能研究

发布时间：2019-03-14 07:26

【摘要】：混凝土材料是目前最主要的建筑材料之一。现今，城镇化速度的加快使得城市人口不断扩增，城市土地资源极度稀缺，导致建筑物密度加大，建筑密度越来越大，建筑物间距变小，采光条件变差，不能保证充足的光照时间。由于混凝土不具透光性，，普通混凝土无法满足功能需求。因此研究导光混凝土是非常必要的，既可以改善光照条件，节约能源，又可以起到装饰的作用。本文采用自主设计的模具及装置来制备树脂导光混凝土，并且介绍了两种制作导光树脂单元的工艺，根据树脂单元植入水泥砂浆基体中的先后顺序，把制备导光树脂板单元分为“先植法”与“后植法”。此论文中的实际制备树脂导光混凝土的方法采用“先植法”施工工艺。本论文对树脂导光混凝土的力学性能和透光性能做了具体的测试和分析，并分析了特殊树脂与水泥砂浆基体间的界面对树脂导光混凝土的力学性能的影响机理，采取一些适当措施如在界面上涂抹界面改性剂增加水泥砂浆基体与树脂间的粘结力。采用强度试验、紫外可见近红外分光光度计、XRD、ESEM研究了树脂导光混凝土的力学性能、透光性能以及树脂与水泥砂浆间界面的微观形貌。对树脂导光混凝土与光纤导光混凝土的透光性能，制备成本，工艺方法进行对比，得出以下结论： 1.树脂应选择透光性能好、力学性能高的树脂材料。制备透光率高、力学性能好的树脂导光混凝土必须选择适合的特殊树脂，树脂的选择的直接关系到模具材料的选用以及制备性能好的树脂导光混凝土的可能性。 2.选择模具时应选择与树脂粘结性小的模具且应具备可以多次重复使用的要求。模具材料的选择直接关系到透明树脂板单元脱模时的难易程度。如果模具与硬化后的树脂粘结性太强，不仅难以脱模还会损坏树脂本身。 3.树脂导光混凝土的抗压强度与树脂与水泥砂浆基体间的界面结合强度有关，当采用界面改性剂涂抹在其界面上时，构件的抗压强度有较大幅度增加，因此，选择一种特殊合适的界面改性剂涂抹在树脂与水泥砂浆基体界面是非常重要的。 4.树脂导光混凝土与光纤导光混凝土相比，透光率大，制备成本低，且制备工艺较为简单。
[Abstract]:Concrete is one of the most important building materials at present. Nowadays, the acceleration of urbanization makes the urban population expand and the urban land resources are extremely scarce, which leads to the increase of building density, the increasing building density, the narrowing of building spacing, and the deterioration of lighting conditions. There is no guarantee of sufficient lighting time. Because concrete is not transparent, ordinary concrete can not meet the functional requirements. Therefore, it is necessary to study the light-guide concrete, which can not only improve the lighting conditions, save energy, but also play the role of decoration. In this paper, self-designed molds and devices are used to prepare resin light-guide concrete, and two kinds of manufacturing technology of light-guide resin unit are introduced, according to the order in which resin unit is implanted into the matrix of cement mortar, The preparation of light-guide resin plate unit is divided into "pre-planting method" and "post-planting method". In this paper, the construction technology of "pre-planting method" is used in the preparation of resin-guided concrete. In this paper, the mechanical properties and transmittance of resin light guide concrete are tested and analyzed, and the influence mechanism of the interface between special resin and cement mortar matrix on the mechanical properties of resin light guide concrete is analyzed. Take some appropriate measures such as applying interfacial modifiers on the interface to increase the bonding force between the matrix and resin of the cement mortar. The mechanical properties, transmittance and micro-morphology of the interface between resin and cement mortar were studied by means of strength test, UV-visible near infrared spectrophotometer (UV-NIR) and XRD,ESEM. By comparing the transmittance, preparation cost and process method of resin light guide concrete and fiber optic light guide concrete, the following conclusions are drawn: 1. The resin should choose the resin material with good light transmittance and high mechanical properties. The preparation of resin-based light-guide concrete with high transmittance and good mechanical properties must choose suitable special resin. The choice of resin directly relates to the selection of die materials and the possibility of preparing resin-based light-guide concrete with good performance. 2. Die selection should be small adhesive with resin mold and should have the requirement of repeated use. The selection of die material is directly related to the degree of difficulty when transparent resin plate element is demoulded. If the mold and hardened resin adhesion is too strong, not only difficult to demoulding, but also damage the resin itself. 3. The compressive strength of resin-guided concrete is related to the interfacial bonding strength between resin and cement mortar matrix. When the interfacial modifier is applied on the interface, the compressive strength of the component increases greatly, so the compressive strength of the component increases greatly. It is very important to choose a special suitable interface modifier on the interface between resin and cement mortar. 4. Compared with fiber optic light guide concrete, resin light guide concrete has the advantages of higher transmittance, lower preparation cost and simpler preparation process.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU528

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