外墙保温砂浆性能的试验研究

发布时间：2018-03-02 10:01

本文关键词： 建筑节能外墙保温砂浆骨料粒径级配胶凝材料水料比　出处：《河北工程大学》2013年硕士论文　论文类型：学位论文

【摘要】：目前，建筑节能已成为我国经济建设中的一项基本国策，在建筑行业已产生巨大影响，且愈来愈受到各级政府和科学研究部门的重视。本实验主要研究胶凝材料及各种骨料对外墙保温砂浆性能的影响，确定各种原材料的种类和最佳掺入量，为提高外墙保温砂浆的综合性能作理论依据：胶凝材料主要有水泥、乳胶粉、纤维素醚、木质纤维和聚苯乙烯纤维等外加剂；选用聚苯颗粒、玻化微珠和膨胀蛭石为轻骨料。简单介绍了外墙保温砂浆的选材分析和各项性能所需进行的试验过程及计算方法。本实验主要分为四大组：以聚苯颗粒和玻化微珠为混合骨料对外墙保温砂浆性能的影响；以玻化微珠为单一骨料对外墙保温砂浆性能的影响；以玻化微珠和膨胀蛭石为混合骨料对外墙保温砂浆性能的影响及以膨胀蛭石为单一骨料对外墙保温砂浆性能的影响。利用混合骨料粒径级配的方法对外墙保温砂浆进行设计试验配比，分析影响外墙保温砂浆性能的主要因素，以外墙保温砂浆浆液的成型率、砂浆试块的抗压、抗折及抗剪强度、吸水率、导热系数作为技术指标，分析研究混合骨料的骨料粒径级配、水料比等因素的不同对外墙保温砂浆各项性能指标的影响，选出较优混合骨料配比方案。并简单的对外墙外保温隔热体系中抗裂砂浆的各项性能进行研究。试验中涉及到的水泥用量、乳胶粉的掺加量等因素对外墙保温砂浆浆液的和易性、施工可操作性均有一定的影响，对此进行不同的对比试验设计来确定水泥及乳胶粉等的最佳掺入量。同时，为了跟本实验作比较，分别从河北某材料加工厂购回干粉外墙保温砂浆进行对比试验。通过数次混合骨料配比方案的比较及数据分析，得出本实验所研究的外墙保温砂浆的高强度、质轻、保温隔热、粘接强度高、防火耐候、吸水率低及环保无污染等的优良特性。另外，还对外墙保温砂浆的施工进行外墙抹灰试验，用于优化砂浆浆液的和易性及可操作性，，并且对抹灰效果进行观察及记录，有利于进一步的改善试验配比，更好的配置成型应用于建筑节能工程中。
[Abstract]:At present, building energy conservation has become a basic national policy in the economic construction of our country, and has had a great impact in the construction industry. And more and more attention has been paid by governments and scientific research departments at all levels. In this experiment, the effects of cementing materials and aggregates on the properties of external wall insulation mortar are studied, and the kinds of raw materials and the best blending amount are determined. In order to improve the comprehensive properties of exterior wall insulation mortar, the cementing materials mainly include cement, latex powder, cellulose ether, wood fiber and polystyrene fiber, and polybenzene particles, vitrified microbeads and expanded vermiculite are selected as lightweight aggregate. This paper briefly introduces the material selection analysis of external wall insulation mortar and the test process and calculation method needed for each performance. This experiment is mainly divided into four groups: the effect of polystyrene particles and glass microbeads as mixed aggregate on the performance of external wall insulation mortar; The effect of vitrified microbeads as a single aggregate on the performance of external wall thermal insulation mortar; The effect of glass microbeads and expanded vermiculite as mixed aggregate on the performance of external wall insulation mortar and the effect of expansive vermiculite as a single aggregate on the performance of external wall insulation mortar. The method of particle size gradation of mixed aggregate for external wall insulation sand. The ratio of design and test of slurry, The main factors affecting the performance of external wall insulation mortar are analyzed. The forming rate of external wall insulation mortar slurry, the compressive strength, flexural and shear strength, water absorption rate and thermal conductivity of mortar test block are taken as technical indexes. The effects of different factors such as aggregate particle size gradation and water-material ratio on the performance of external wall insulation mortar are analyzed and studied. The optimum mix aggregate ratio scheme was selected, and the properties of anti-cracking mortar in external insulation system were studied simply. The amount of cement and the amount of latex powder involved in the test have a certain influence on the external wall insulation mortar slurry and its construction maneuverability. In order to determine the optimum dosage of cement and latex powder, and to compare with this experiment, The contrast tests were carried out by purchasing dry powder external wall insulation mortar from a material processing plant in Hebei Province respectively. Through the comparison and data analysis of several mixed aggregate ratio schemes, it was concluded that the external wall insulation mortar studied in this experiment is of high strength, light weight, insulation and insulation. High bonding strength, fire resistance, low water absorption and environmental protection without pollution. In addition, the external wall plastering test is carried out for the construction of external wall insulation mortar, which is used to optimize the compatibility and maneuverability of mortar slurry, and to observe and record the plastering effect, which is conducive to further improving the test ratio. Better configuration molding is used in building energy saving engineering.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU551;TU578.1

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