内墙饰面层鼓泡和开裂的工程案例与机理分析  

Case Study and Mechanism Analysis of Bubbling and Cracking of Decorative Layer in an Internal Wall

作　　者：李保亮 张晨悦 孙文博 刘广伍 李杰 李梓言 于嘉慧 

机构地区：[1]淮阴工学院建筑工程学院,江苏淮安223001 [2]东平中联水泥有限公司,山东泰安271500

出　　处：《混凝土世界》2024年第12期47-52,共6页China Concrete

基　　金：淮安市基础研究计划(联合专项HABL2023013);淮阴工学院2024年研究生科技创新计划项目(HGYK202428)。

摘　　要：本文结合典型工程案例,分析了内墙饰面层鼓泡和开裂的特点,并采用XRF、XRD、SEM-EDS分析了内墙饰面层鼓泡和开裂处的化学组成、矿物组成和微观形貌。结果表明:内墙饰面层鼓泡和开裂处的主要化学组成为CaO、MgO、SiO_(2)_(2)、SO_(3)、Na_(2)O和K_(2)O,矿物组成为CaCO_(3)、MgCa(CO_(3))_(2)、CaSO_(4)·2H_(2)O、Mg_(3)Si_(4)O_(10)OH_(2)和Na_(2)SO_(4);渗漏后涂料、石膏部分溶解并与基层脱粘,墙体材料中以Na离子和K离子为主要存在形式的碱含量超标引起返碱,以及混凝土结构基层开裂是造成内墙饰面层鼓泡和开裂的主要原因。This article combines the typical engineering cases to analyze the characteristics of bubbling and cracking in the interior wall decorative layer.It uses XRF,XRD,SEM-EDS to analyze the chemical composition,mineral composition,and microstructure of the bubbling and cracking areas in the interior wall decorative layer.The results show that the main chemical compositions of the bubbling and cracking areas of the interior wall decorative layer are CaO,MgO,SiO_(2),SO_(3),Na_(2)O and K_(2)O,while the mineral compositions are CaCO_(3),MgCa(CO_(3))_(2),CaSO_(4)·2H_(2)O,Mg_(3)Si_(4)O_(10)(OH)_(2),and Na_(2)SO_(4).After leakage,the paint and gypsum partially dissolve and detach from the base layer;the excessive alkali content,mainly in the form of Na and K ions,in the wall material causes efflorescence;and the cracking of the concrete structure base layer are the main reasons for the bubbling and cracking of the interior wall decorative layer.

关 键 词：鼓泡 开裂 内墙 机理分析 返碱 

分 类 号：TU767[建筑科学—建筑技术科学]