Effect of fly ash and hemihydrate gypsum on the properties of unfired compressed clay bricks

International Journal of Physical Sciences

Carlos Marin Lopez¹ 

关键词: Carbon footprint;    Earth construction;    unfired clay bricks;    fly ash.;   

DOI  :  10.5897/IJPS11.935

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

The effect of fly ash type F and hemihydrate gypsum on the mechanical and thermal properties of unfired compressed clay bricks (UCSB) using asemi-dry mixturewas determined.UCSB were molded from two different semi-dry mixtures, the bricks made with dark-brown soil + sand + chemical additives were labeled as DBS-LG while the other bricks made with the mixture dark-brown soil + sand+fly ash + chemical additives were labeled as DBS-FALG. SEM and XRD were used to investigate microstructure and mineralogical composition, respectively. Results showed that the addition of fly ash and hemihydrate gypsum improves the mechanical properties of UCSB compared to those of a clay-polymers system; thermal conductivity was similar to other clay based bricks. These results reinforce the suitability of these mixtures in low cost building bricks with energy conservation.

【 授权许可】

CC BY