Mechanical Properties and Thermal Conductivity of Lightweight Foamed Geopolymer Concretes

Joint Conference on Green Engineering Technology & Applied Computing 2019

工业技术（总论）;计算机科学

Fatimah Azzahran Abdullah, Siti^1 ; Yun-Ming, Liew^1 ; Mustafa Al Bakri Abdullah, Mohd^1 ; Cheng-Yong, Heah^1 ; Zulkifly, Khairunnisa^1

Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^1

关键词: Geopolymer concrete;    Light weight aggregate;    Thermal insulation properties;    Thermal-insulating;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/551/1/012089/pdf
DOI  :  10.1088/1757-899X/551/1/012089

来源: IOP

【 摘 要 】

Foamed geopolymer concretes have a better performance in the thermal insulation properties compared to normal geopolymer concretes. In this research, lightweight aggregate geopolymer concretes was incorporated with different percentage of foaming agents (hydrogen peroxide). Compressive strength and thermal conductivity were measured. From results obtained, increased H2O2 contents will decrease the strength of lightweight foamed geopolymer concretes. Lightweight aggregate foamed geopolymer concretes (LWAFGC) with foaming agent content of 0.2wt.% obtained the highest strength of 19.601 MPa. Furthermore, Increased of H2O2 contents also will decrease the thermal conductivity of lightweight foamed geopolymer concretes. Lightweight foamed geopolymer concretes with 2wt.% H2O2 gave the good thermal insulating behavior when the thermal conductivity value recorded the lowest value compare to other wt.% of H2O2 content. The thermal conductivity value of lightweight foamed geopolymer concretes with 2wt.% of H2O2 was 0.072 W/m. K while, the thermal conductivity of other mixtures ranged between 0.077 W/m. K to 0.087 W/m. K., respectively.