生物炭混凝土性能和碳封存效益研究.pdf

Advances in Environmental Protection 环境保护前沿, 2017, 7(6), 465-475 Published Online December 2017 in Hans. /journal/aep /10.12677/aep.2017.76060 The Performance and Carbon Sequestration of the Biochar Concrete 1 1 1 2 Dannel Zhang , Xian Huang , Zhenhong Wang , Yansen Huang 1 College of Life Science, Guizhou University, Guiyang Guizhou 2 Guizhou Lianjian Civil Engineering Quality Testing Monitoring Center Co. Ltd., Guiyang Guizhou th t h th Received: Nov. 15 , 2017; accepted: Nov. 30 , 2017; published: Dec. 8 , 2017 Abstract Carbon sequestration is a key technique mitigating the global warming. We used biochar to re- place cement to make the biochar concrete in concrete production, and then compared the per- formance and carbon sequestration of the biochar concrete with C20 concrete. When 1% of ce- ment was replaced by biochar, the strength of the biochar concrete increased by 9.77% compared with the control; When 5% of cement was replaced by biochar, the strength of the biochar con- crete was similar to the control; When 6%~30% of cement was replaced by biochar, the strength of the biochar concrete decreased compared with the control, but the biochar concrete still met the national standards of the C20 concrete for the concrete strength. The addition of water for the production of the biochar concrete and the saturation water contents of the biochar concrete in- creased with increasing amount of biochar in the concrete, but slump constant and the apparent density of the biochar concrete decreased. If the biochar conc