shht建筑材料学报
JOURNAL OF BUILDING MATERIALS
JOURNAL OF BUILDING MATERIALS建筑材料学报1007‑962931‑1764/TU《建筑材料学报》杂志编辑部200092,上海市杨浦区四平路1239号 同济大学材料科学与工程学院1007-9629(2022)04-0415-0910.3969/j.issn.1007-9629.2022.04.013(4-13)20207514TU528.01A研究简报Research NotesHPMC对铝酸盐水泥-石膏二元胶凝体系砂浆性能的影响Effect of Hydroxypropyl Methyl Cellulose on Aluminate Cement‑Gypsum Mortar李磊LILei12王茹WANGRu12*武雪杉WUXueshan12王培铭WANGPeiming12同济大学 先进土木工程材料教育部重点实验室,上海201804Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai201804, China同济大学 材料科学与工程学院,上海201804School of Materials Science and Engineering, Tongji University, Shanghai201804, China王 茹(1975—),女,辽宁昌图人,同济大学教授,博士生导师,博士. E‑mail: ruwnag@tongji.edu.cn
The effect of hydroxypropyl methyl cellulose (HPMC) and its content on the physical and mechanical properties of aluminate cement gypsum mortar was investigated. The results obtained by mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM) were used to make a reasonable explanation for the change of macro properties. The results show that HPMC can affect the water‑retention rate, air content, setting time, flow, consistency and wet density which play a key role in increasing the plasticity and operational time of the fresh mortar. HPMC reduces the flexural strength, compressive strength, and tensile bond strength of the hardened mortar. The decrease of the strength is due to the fact that the HPMC increases the porosity and pore volume and changes the distribution of hydration products. Therefore, in practical application, the two sides of the HPMC modified aluminate cement‑ gypsum mortar should be considered carefully.
羟丙基甲基纤维素铝酸盐水泥石膏砂浆性能孔隙特征hydroxypropyl methyl cellulose(HPMC)aluminate cementgypsumproperty of mortarpore characteristics国家自然科学基金资助项目51872203国家自然科学基金资助项目(51872203)version1.0.0.21308structure-time2022-04-30T13:22:21word-sourceFX
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LI Lei,WANG Ru,WU Xueshan,et al.Effect of Hydroxypropyl Methyl Cellulose on Aluminate Cement‑Gypsum Mortar[J].
JOURNAL OF BUILDING MATERIALS,2022,25(04):415-423.