Grouting khoom siv rau hauv av
Grouting cov cuab yeej siv rau hauv av yog ib qho khoom siv sib xyaw ua ke, nrog rau cov khoom sib tov, lub twj tso kua mis thiab lub twj tso kua mis grouting. Nws yog tsuas yog siv los tsim cov cement slurry thiab cov ntaub ntawv zoo sib xws, uas yog siv hauv kev tsim kho hauv av thiab hauv av, nrog rau txoj kev loj, railways, hydropower chaw nres tsheb, kev tsim kho, mining thiab lwm yam.