沸石混凝土调湿及力学性能研究

发布时间：2018-05-27 03:40

  本文选题：吸湿量 + 放湿量　； 参考：《吉林大学》2017年硕士论文

【摘要】：随着全球经济的快速发展,人们生活水平的提高使得人们对幸福的要求越来越高。过去人们常采用一些机械工具来调节居住室内空气湿度。但这种调节方法因不通风导致居室内空气污染,同时导致能源的浪费,不符合可持续发展的战略要求。本论文基于这一热点问题采用正交试验方法对沸石混凝土的试验配比进行了一系列研究,为该种材料的后续应用发展积累了大量数据,对于该材料的实际应用,尤其是在调节室内湿环境方面具有重要的科学意义及现实价值。研究结果分析表明:(1)改性后沸石粉的X衍射分析结果表明该沸石粉的结构成分均未发生变化,天然斜发沸石具有良好的热稳定性。(2)经热改性处理后的沸石粉的吸湿试验结果分析表明:当改性条件为500℃持时2h时,沸石粉具有最佳的吸湿性能,最佳吸湿率为13.60%,放湿率为11.73%,吸湿滞后率为13.75%。(3)本试验以水灰比、砂率、沸石粉为影响因素,以抗压强度、抗折强度和吸湿量为测量指标,采用三因素四水平来设计正交试验并浇筑混凝土试件。试验结果分析表明的最优组合:A组为M1N3L0(水灰比0.34、砂率40%、沸石粉0%);B组为M3N1L4或M3N4L4(水灰比0.46、砂率36%或42%、沸石粉20%);C组为M3N1L3(水灰比0.46、砂率36%、沸石粉15%)。(4)本试验利用3-11-1(输入层含3个神经元,隐含层含有11个神经元,输出层1神经元)结构的BP神经网络模型对沸石混凝土吸放湿性能进行预测。预测模型的训练数据的MES、R~2、MAPD分别为583.09、0.954、2.87%,预测数据的MES、R~2、MAPD分别为399.48、0.929、0.34%。试验结果分析表明:该模型对沸石混凝土吸湿性能的预测是合理的、可靠的。
[Abstract]:With the rapid development of the global economy, the improvement of people's living standard makes people's request for happiness more and more high. In the past, people often used some mechanical tools to adjust indoor air humidity. However, this method can not meet the strategic requirements of sustainable development because it causes indoor air pollution and energy waste due to lack of ventilation. In this paper, a series of research on the experimental ratio of zeolite concrete is carried out by orthogonal test method based on this hot topic, which accumulates a lot of data for the further development of this kind of material, and for the practical application of the material, Especially in regulating indoor wet environment has important scientific significance and practical value. The X-ray diffraction analysis of the modified boiling stone powder showed that the structure of the zeolite powder did not change. Natural clinoptilolite has good thermal stability. 2) the moisture absorption test results of zeolite treated by thermal modification show that when the modification conditions are kept at 500 鈩，

本文编号：1940281