Feasibility Study on Fabrication of Geopolymer Bricks by Wasted Grinding Wheel at Room Temperature

作     者：Yi-Che Hsieh Ta-Wui Cheng Chia-Ho Wu 

作者机构：Department of Materials and Mineral Resources EngineeringNational Taipei University of TechnologyTaipei10608Taiwan Institute of Mineral Resources EngineeringNational Taipei University of TechnologyTaipei10608Taiwan 

出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)

年 卷 期：2020年第8卷第12期

页      面：1657-1670页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0706[理学-大气科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 070301[理学-无机化学] 

主　　题：Geopolymer waste grinding wheel geopolymer bricks 

摘      要：In this study,the feasibility of producing eco-friendly bricks by using geopolymer technology and a waste grinding wheel(WGW)from the grinding wheel industries was ***,in order to meet industrial needs,for instance,in Taiwan,approximately 500,000 grinding wheels are used *** is,a large number of“wastegrinding wheels are ***,few studies have been conducted on the use of WGWs as raw materials in geopolymer *** use of geopolymer technology to form bricks can avoid the utilization of clay and cement and even prevent the use of a high-temperature process in ***,it can decrease CO_(2) emission and energy consumption and thus,protect the *** this study,the following three major factors were considered:press-forming pressure(70 and 100 kgf/cm2),NaOH molar concentration(2 and 4M),and the ratio of binder fineaggregate(1:3,1:4,and 1:5).Under these conditions,the specimens were tested using the compressive strength test,water absorption test,microstructure analysis,a freezing–thawing test and toxicity characteristic leaching procedure *** optimal formulation was composed of 1:4 binder fine-aggregate ratio,4M NaOH concentration,and 100-kgf/cm2 ***,we used a WGW and achieved a compressive strength of 50.6 MPa after 28 days,which was greater than 32 MPa and conformed to the Grade A brick standard of National Standards of the Republic of China(13295).In conclusion,this brick fabrication method based on geopolymer technology was not only beneficial to the environment but also improved the efficiency of reutilizing WGW.