循环再利用理念下造纸污泥陶粒新型环保混凝土的制备研究  

Research on the Preparation of New Environmentally Friendly Concrete Using Papermaking Sludge Ceramic Particles Under the Concept of Recycling and Reuse

作　　者：李祥[1] 杜斌 周玲[1] LI Xiang;DU Bin;ZHOU Ling(Xi’an Siyuan University,Xi’an 710038,China;Xi’an Jianbo Software Technology Co.,Ltd,Xi’an 710000,China)

机构地区：[1]西安思源学院,陕西西安710038 [2]西安建博软件科技有限公司,陕西西安710000

出　　处：《造纸科学与技术》2024年第6期49-53,共5页Paper Science And Technology

基　　金：陕西省水利科技项目(2023slkj-9);陕西省“十四五”教育科学规划课题(SGH22Y1866);教育部高校学生司第二期供需对接就业育人项目“重点领城校企合作项目”(20230110406);西安思源学院校长基金项目(XZSYZD-B2311)。

摘　　要：作为造纸固体废弃物主要成分,污泥对环境污染严重且无法自然降解。结合造纸污泥物质含量与特性,以促使其循环利用于建筑新型材料制作,不仅可以有效解决造纸业污泥处置问题,还可以充分优化建筑材料环保性能与应用性能。由此,顺应循环再利用理念以造纸污泥改性制备了新型环保陶粒混凝土,并对其性能进行了表征。结果表明,随着焙烧温度升高,造纸污泥陶粒内液相物质增多,孔隙形态改变,且连通孔增加,孔径较大,孔数量有所减少,但陶粒表面越发光滑紧实;造纸污泥陶粒基础性能皆与标准GB/T 17431.2—2010要求相符;当造纸污泥陶粒用量为40%,养护龄期为28d时,新型环保混凝土机械性能整体表现更优。As the main component of paper-making solid waste,sludge has serious environmental pollution and cannot be naturally degraded.By combining the material content and characteristics of paper-making sludge,it can promote its recycling in the production of new building materials.This not only effectively solves the problem of sludge disposal in the paper-making industry,but also fully optimizes the environmental and application performance of building materials.Therefore,this article conforms to the concept of recycling and prepares a new type of environmentally friendly ceramic aggregate concrete by modifying papermaking sludge,and characterizes its performance.The results show that as the calcination temperature increased,the liquid phase substances in the ceramic particles of papermaking sludge increases,the pore morphology changes,and the connected pores increases with larger pore sizes,and the number of pores decreases,but the surface of the ceramic particles became smoother and more compact;the basic performance of papermaking sludge ceramic particles is consistent with the requirements of GB/T 17431.2-2010 standard;when the dosage of papermaking sludge ceramic particles is 40% and the curing period is 28 days,the overall mechanical performance of the new environmentally friendly concrete is better.

关 键 词：循环再利用 造纸污泥 陶粒 环保混凝土 抗折强度 

分 类 号：TS79[轻工技术与工程—制浆造纸工程]