膨胀珍珠岩及陶粒节能保温混凝土板的研制

发布时间：2018-05-22 20:41

本文选题：膨胀珍珠岩 + 陶粒　；参考：《安徽理工大学》2014年硕士论文

【摘要】：膨胀珍珠岩和陶粒两种材料作为出色的保温原材料,有着质轻、隔热、耐久、价廉的特点,尤其是两种材料的成分均为无机物,与传统的聚苯乙烯泡沫塑料板等保温材料相比又有着不凡的防火性能,所以在能源问题日益严峻的背景下,越来越受到青睐,成为保温工程中的重要原材料。其中,用膨胀珍珠岩和陶粒制成的轻集料混凝土保温板材为最常见的应用方式。本论文将对以膨胀珍珠岩颗粒和陶粒颗粒作为主要原材料,并以陶砂代替普通砂来制作的节能保温混凝土板材作以研究,探寻性能优良的试验配合比及其制作工艺,同时得出其各项技术参数,满足作为建筑围挡结构的使用要求。主要的研究内容如下： (1)探讨节能保温混凝土的导热理论和强度理论。确定以导热系数为主要控制目标来评定混凝土保温功效的研究手段,与普通混凝土对比,阐述节能保温混凝土的强度形成机制。 (2)针对膨胀珍珠岩颗粒因吸水率偏高而难以大范围推广的问题,特别采用憎水膨胀珍珠岩颗粒作为试验材料,大幅降低了膨胀珍珠岩混凝土的吸水率,为膨胀珍珠岩混凝土的进一步应用奠定了基础。 (3)详细阐述节能保温混凝土的制作工艺,分析制作过程中需要注意问题,使其作为建筑保温构件的各种功能得以最大化发挥。 (4)以两组正交试验方案,考虑水泥用量、净用水量、陶砂砂率和轻骨料总体积对试验结果的影响,得到关于干表观密度、28d抗压强度和导热系数的参数数据。对这数据进行对比分析,并找出各种因素对这些参数影响作用的大小关系,最终选定膨胀珍珠岩混凝土为制造外墙墙体板材的方案,陶粒混凝土为制造屋面板板材的方案。 (5)最大限度克服“材料容重越小、保温功效越好,但强度越低”的矛盾,探寻出了兼顾彼此的最佳配合比,令节能保温混凝土的各种功效水平趋于平衡,并测定出最佳配合比下的试验结果参数。
[Abstract]:Expanded perlite and ceramsite are excellent raw materials for heat preservation, which have the characteristics of light weight, heat insulation, durability and low price, especially the composition of both materials is inorganic. Compared with traditional thermal insulation materials such as polystyrene foam plastic sheet, it has excellent fire resistance, so it is more and more popular in the background of energy problem becoming more and more serious, and become an important raw material in insulation engineering. Among them, lightweight aggregate concrete insulation board made of expanded perlite and ceramsite is the most common application. In this paper, the main raw materials are expanded perlite particles and ceramsite particles, and ceramic sand is used instead of common sand to make energy-saving and thermal insulation concrete plate, and to explore the good performance of the test mix ratio and its manufacturing technology, in this paper, the main materials are expanded perlite particles and ceramsite particles as the main raw materials. At the same time, the technical parameters are obtained to meet the requirements of the building enclosure structure. The main contents of the study are as follows: 1) the thermal conductivity theory and strength theory of energy-saving and thermal insulation concrete are discussed. The research means of evaluating the thermal insulation efficacy of concrete with thermal conductivity as the main control target is determined. Compared with ordinary concrete, the mechanism of strength formation of energy-saving insulation concrete is expounded. 2) aiming at the problem that expanded perlite particles are difficult to be popularized widely due to their high water absorption rate, especially the hydrophobic expanded perlite particles are used as experimental materials, which greatly reduces the water absorption rate of expanded perlite concrete. It lays a foundation for the further application of expanded perlite concrete. This paper expounds in detail the manufacturing technology of energy-saving insulating concrete, analyzes the problems needing attention in the process of making, and makes it possible to maximize its functions as a building insulation member. 4) considering the effects of cement dosage, net water consumption, clay sand ratio and total volume of lightweight aggregate on the test results, two orthogonal test schemes were used to obtain the parameter data on the compressive strength and thermal conductivity of dry apparent density for 28 days. By comparing and analyzing the data and finding out the relationship between the influence of various factors on these parameters, the expansion perlite concrete is selected as the scheme of making wall panel of external wall, and the scheme of making roof slab is made of ceramsite concrete. 5) to overcome the contradiction that "the smaller the bulk weight of the material is, the better the thermal insulation effect is, but the lower the strength", the best mix ratio has been explored to balance the various efficacy levels of energy-saving insulation concrete. The parameters of the test results under the optimum mixture ratio were determined.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU528.7

【参考文献】