Influence of surface modified basalt fiber on strength of cinder lightweight aggregate concrete

[摘要] In order to improve the bonding and bridging effect between volcanic slag lightweight aggregate concrete cement and basalt fiber, The basalt fiber was subjected to etching and roughening treatment by NaOH solution, and the surface of the basalt fiber was treated with a mixture of sodium silicate and micro-silica powder. The influence of modified basalt fiber on the strength of volcanic slag lightweight aggregate concrete was systematically studied. The experimental results show that the modified basalt fiber volcanic slag lightweight aggregate concrete has a flexural strength increased by 47%, the compressive strength is improved by 16% and the toughness is increased by 27% compared with that of the non-fiber.

[发布机构] School of Materials Science and Engineering, Jilin Jianzhu University, Changchun; 130118, China^1;Jilin Architectural Science Research and Design Institute, Changchun; 130118, China^2

[关键词] Basalt fiber;Bridging effects;Light-weight aggregate concrete;Micro-silica powder;NaOH solutions;Sodium silicate;Surface-modified