摘要
Abstract
The effects of 0.50 g/L,1.00 g/L,1.50 g/L,2.00 g/L sodium alginate on the properties of microbial materials were investigated through experiments,and the optimal ratio of repair materials was determined.The results showed that when the mass concentration of sodium alginate solution was 1.00 g/L,the viscosity of the repair material and the compressive strength of the solid sand body reached the best balance,and the repair material prepared from river sand,bacterial sludge,urea and sodium alginate solution could significantly improve the impermeability of concrete,and the strength repair rate of concrete with cracks reached 64.3%.XRD and SEM analysis showed that the main components of the repair products were aragonite and calcium alginate gel,which could effectively enhance the sealing effect of cracks,and the research results could provide references for the repair of cracks in hydraulic concrete.关键词
裂缝修复/海藻酸钠/微生物诱导矿化/水工混凝土Key words
crack repair/sodium alginate/microbial-induced mineralization/hydraulic concrete分类
水利科学
