基于Design-Expert的碱激发粉煤灰建筑外墙腻子配合比优化试验研究  

Experimental Study on Optimization of Mix Ratio of Putty for Exterior Wall of Buildings With Alkali Excited Fly Ash Based on Design-Expert

作　　者：梁杨 杨兵 王连盛 郭晶 姜广明 陈宝雨 LIANG Yang;YANG Bing;WANG Liansheng;GUO Jing;JIANG Guangming;CHEN Baoyu(China Academy of Building Research,Beijing 100013,China;CABR Testing Center Co.,Ltd.,Beijing 100013,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]建研院检测中心有限公司,北京100013

出　　处：《工程质量》2024年第1期17-22,共6页Construction Quality

基　　金：中国建筑科学研究院有限公司青年科研基金项目资助(20200112331030038)。

摘　　要：为了拓展工业固体废弃物粉煤灰的回收利用途径,减少对环境造成的污染,增加其在筑材料中回收利用率。在建筑外墙腻子中加入碱性激发剂(Ca(OH)_(2)、Na_(2)SiO_(3))、粉煤灰,研究碱性激发剂的激发效果。同时通过Design-Expert设计试验,分析主要组分对腻子漆膜粘结强度、吸水量的影响。结果表明:加入碱性激发剂5%,粉煤灰32.5%时,吸水量减少14%,粘结强度增加43%。乳胶粉对吸水量、粘结强度的影响非常显著(P<0.0001),其次是粉煤灰的加入量。通过加入碱性激发剂、提高乳胶粉占比,粉煤灰掺量能达到32%~65%,原配比中水泥的掺量相对减少0%~16%。In order to expand the recycling methods of industrial solid waste fly ash,reduce the pollution to the environment and increase its recycling rate in building materials.In this paper,alkaline activators(Ca(OH)_(2),Na_(2)SiO_(3))and fly ash are added to the building exterior wall putty to study the excitation effect of alkaline activators.At the same time,through the Design-Expert design test,the influence of the main components on the adhesion strength and water absorption of the putty paint film was analyzed.The results show that when adding 5%alkaline activator and 32.5%fly ash,the water absorption decreases by 14%and the bonding strength increases by 43%.The influence of latex powder on water absorption and bonding strength is very significant(P<0.0001),followed by the addition of fly ash.By adding an alkaline activator and increasing the proportion of latex powder,the amount of fly ash can reach 32%to 65%,and the amount of cement in the original proportion can be relatively reduced by 0%to 16%.

关 键 词：粉煤灰 碱性激发剂 Design-Expert 吸水量 粘结强度 

分 类 号：TU56[建筑科学—建筑技术科学]