玻化微珠保温砂浆碳化和冻融性能试验研究  

Experimental study on the carbonation resistance and freezing-thawing performance of the glazed hollow beads thermal insulation mortar

作　　者：吕丹丹[1] 刘元珍[1] 李珠[1] 乔稳超 

机构地区：[1]太原理工大学建筑与土木工程学院,山西太原030024

出　　处：《混凝土》2015年第4期127-129,133,共4页Concrete

基　　金：国家自然科学基金项目(51308371);教育部高等院校博士点基金资助(20101402120007)

摘　　要：作为无机保温材料的典型代表,玻化微珠保温砂浆在围护结构外保温上的应用迅速增加。通过选定其最优配合比,对玻化微珠保温砂浆进行室内快速碳化和冻融试验,并测定其在单一作用及两者耦合作用下的抗压强度,揭示保温砂浆的劣化和损伤机理。试验结果表明,碳化对保温砂浆的密实性有加强作用,并会提高其抗压强度,而冻融循环则降低了保温砂浆的抗压强度,运用回归分析法确定了单一作用及耦合作用下的抗压强度和冻融循环次数之间的定量关系表达式,从而为玻化微珠保温砂浆外保温系统的耐久性设计和寿命评估提供试验依据。The application ofglazed hollowbeads thermal insulation mortar on the palisade structure external thermal insulation is increasing rapidly,as the typical representative of inorganic thermal insulation material. The accelerated carbonation and freezing-thaing experiments have been conducted byselecting the optimal mixture ratio. And itscompressive strength under the single and coupling function has been determined,thus revealing degradation and damage mechanism of the thermal insulation mortar. Test results showthat carbonation would strengthen the compactness of mortar and improve its compressive strength,while the freezing-thawing cycles would reduce its compressive strength. The quantitative relational expression between mortar strength under the single and coupling function and freezing-thawing cycles times was determined. It will provide experiment basis for durability design and life evaluation of glazed hollowbeads thermal insulation mortar.

关 键 词：玻化微珠保温砂浆 碳化作用 冻融循环 抗压强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]