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材料导报  2021, Vol. 35 Issue (z2): 236-240    
  无机非金属及其复合材料 |
石膏基地面轻质保温层材料的制备及性能研究
贺诚, 李庆超, 周涵, 李东旭
南京工业大学材料科学与工程学院,南京 210000
Study on Preparation and Properties of Light Insulation Material for Gypsum Base Surface
HE Cheng, LI Qingchao, ZHOU Han, LI Dongxu
College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210000, China
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摘要 以α-半水石膏为主要胶凝材料,混合聚苯颗粒(EPS)和玻化微珠(VM)作为轻骨料,并对石膏-水泥-粉煤灰混合料配比建立回归方程以及多目标优化分析,分别从宏观性能、孔径结构和微观分析对石膏基保温砂浆进行实验研究。实验结果表明:轻骨料VVM∶VEPS为3∶7较合适,优化配比为石膏82.6%、水泥12%和粉煤灰5.4%。EPS和VM混合改善了制品孔结构,使得制品基体内部更致密,提供了良好的力学性能和导热系数,满足地面用复合板保温层材料的要求指标。
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贺诚
李庆超
周涵
李东旭
关键词:  石膏  保温材料  轻质骨料  混合料优化    
Abstract: With the α-hemihydrate as the main cementifying material, mixed expanded polystyrene (EPS) and vitrified microsphere (VM) as light aggregate, and the mixture ratio of gypsum, cement and fly ash was used to establish the regression equation and conduct multi-objective optimization analysis. The experimental research on gypsum based thermal insulation mortar was conducted from the macro-performance, pore structure and micro-analysis respectively. Experimental results showed that through the analysis of macro performance and pore size structure, the VVM∶VEPS of light aggregate is 3∶7, and the optimal ratio is 82.6% of gypsum, 12% of cement and 5.4% of fly ash. The good particle grading of EPS and VM reduces the porosity of mortar. Cement and fly ash mutually promote the generation of hydration products in gypsum environment. The cementitious C-S-H, needle-like AFt and unhydrated SiO2 particles together fill the pores of gypsum crystal, making the internal matrix of products more compact. It provides good mechanical properties and thermal conductivity, and meets the requirements of composite plate insulation material for ground.
Key words:  gypsum    insulation material    light aggregate    mixture optimization
                    发布日期:  2021-12-09
ZTFLH:  TU55  
基金资助: 国家重点研发计划(2018YFD1101000)
通讯作者:  dongxuli@njtech.edu.cn   
作者简介:  贺诚,1995年12月生,硕士研究生,就读于南京工业大学,主要从事地面轻质保温材料方面的研究。
李东旭,南京工业大学材料科学与工程学院博士研究生导师、教授。现任中国硅酸盐学会水泥专业委员会副主任委员,长期从事新型胶凝材料、环境协调胶凝材料和生物材料的物理化学原理等方面的研究。获得节能型钢渣水泥化工部科技进步三等奖,江苏省优秀论文奖和研究生社会实践优秀指导教师的称号,近五年在国内外重要刊物上发表学术论文30多篇,被SCI收录论文9篇。
引用本文:    
贺诚, 李庆超, 周涵, 李东旭. 石膏基地面轻质保温层材料的制备及性能研究[J]. 材料导报, 2021, 35(z2): 236-240.
HE Cheng, LI Qingchao, ZHOU Han, LI Dongxu. Study on Preparation and Properties of Light Insulation Material for Gypsum Base Surface. Materials Reports, 2021, 35(z2): 236-240.
链接本文:  
http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2021/V35/Iz2/236
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