修补用碱激发材料的泛碱抑制研究  

Floodinginhibition Measures of Alkali-Inspired Materials for Patching

作　　者：宋永远 周文娟 赵依琳 SONG Yong-yuan;ZHOU Wen-juan;ZHAO Yi-lin(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Engineering Technology Innovation Centre for Construction Waste Recycling,Ministry of Housing and Urban-Rural Development,Beijing 100044,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]住房城乡建设部建筑垃圾资源化工程技术创新中心,北京100044

出　　处：《科学技术与工程》2025年第6期2499-2510,共12页Science Technology and Engineering

基　　金：国家重点研发计划(2022YFC3803403)。

摘　　要：为降低修补用碱激发材料的泛碱,通过表面喷涂外加剂、掺加玻璃粉、掺加赤泥的方式研究了修补用碱激发材料的泛碱抑制措施。并通过扫描电镜、氮吸附分析、超景深图像分析等方法分析其抑制机理。结果表明:在砂浆试件表面涂刷PNC401防水涂料或有机硅防水剂后泛碱量分别减少了61.3%和26.7%;玻璃粉、赤泥的掺量在15%内满足修补砂浆各项性能要求;掺加15%的玻璃粉、赤泥后泛碱量分别减少了60.7%、52.0%,且砂浆内部孔隙数量较少,无明显裂缝产生,减少了碱性离子的溶出通道,对修补用碱激发材料的泛碱有很好的抑制效果。In order to reduce the panalkalisation of alkali-inspired materials for repair,the inhibition of panalkalisation of alkali-inspired materials for repair was investigated by means of surface spraying of admixtures,doping of glass powder,and doping of red mud.The inhibition mechanism was also analysed by scanning electron microscopy,nitrogen adsorption analysis and super depth of field image analysis.The results show as follows.After brushing PNC401 waterproof coating or organosilicon waterproofing agent on the surface of mortar specimen,the amount of alkali flooding is reduced by 61.3%and 26.7%,respectively.The dosage of glass powder and red mud within 15%meets the requirements of the performance of the repair mortar.The amount of alkali flooding was reduced by 60.7%and 52.0%after doping of 15%glass powder and red mud,respectively,and the number of pore spaces inside the mortar was less,no obvious cracks were produced,which reduced the dissolution of alkaline ions.The number of pores inside the mortar is less,and there is no obvious crack,which reduces the dissolution channel of alkaline ions,and it has a good inhibition effect on the alkaline flooding of alkaline stimulating materials for repairing.

关 键 词：路面快速修补砂浆 碱激发 泛碱 抑制措施 

分 类 号：TU526[建筑科学—建筑技术科学]