摘要
以硅烷偶联剂、木质素纤维、双氧水作为改性剂,对建筑废弃物粉末进行改性,并将改性后形成的水性复配物作为胶凝材料替代部分水泥,与建筑废弃物颗粒充分混合,制成轻质隔墙板,研究了木质素纤维掺量和建筑废弃物颗粒掺量对轻质隔墙板力学性能的影响,并进行了SEM微观分析。结果表明:改性后的建筑废弃物水性复配物具有与水泥相同功效的凝胶性质,在交联聚合作用下,可形成稳定的三维网络结构,有效提高轻质隔墙板的力学强度;随着木质素纤维掺量和建筑废弃物颗粒掺量的增加,轻质隔墙板的力学性能均呈先增大后减小的趋势,最佳木质素纤维掺量为6%,适宜建筑废弃物颗粒掺量为42%左右。
With silane coupling agent,lignin fiber and hydrogen peroxide as modifiers,the construction waste powder was modified,and the modified water-based compound was used as the cementitious material to replace part of cement,which was fully mixed with the construction waste particles to prepare lightweight partition board.The influence of lignin fiber content and construction waste particle content on the mechanical properties of lightweight partition board was studied,and the SEM microscopic analysis was carried out.The results show that the modified water-borne compound of construction waste has the same gel property as cement,and can form a stable three-dimensional network structure under the cross-linking polymerization,effectively improving the mechanical strength of lightweight partition board.With the increase of lignin fiber content and construction waste particle content,the mechanical properties of lightweight partition board are increased first and then decreased,and the optimum content of lignin fiber is 6%,and the suitable content of construction waste particle is about 42%.
作者
谭春雷
任吉
崔李三
邓宇
TAN Chun-lei;REN Ji;CUI Li-san;DENG Yu(Department of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China;Department of Nursing and Health,Weifang Business Vocational College,Weifang 262234,China)
出处
《混凝土与水泥制品》
2023年第3期74-77,共4页
China Concrete and Cement Products
基金
广西高校中青年教师科研基础能力提升项目(2020KY08025)
广西高等教育本科教学改革工程项目(2020JGZ129)
广西碳酸钙资源综合利用重点实验室开放基金课题项目(HZXYKFKT202203)
国家自然科学基金资助项目(51768008)
中国博士后科学基金项目(2017M613273XB)
广西自然科学基金项目(2015GXNSFAA139263)。
关键词
建筑废弃物
改性处理
轻质隔墙板
力学性能
微观分析
Construction waste
Modification treatment
Lightweight partition board
Mechanical property
Micro analysis
