Kev cuam tshuam ntawm Mineral Admixtures xws li Silica Fume Rau Lub Zog Ntawm Cov Khoom Siv Grouting
Feb 13, 2023
Kev cuam tshuam ntawm cov ntxhia ntxiv xws li silica fume ntawm lub zog ntawm cov khoom siv grouting
Raws li cov kev qhia tshwj xeeb ntawm American Post-tensioning Prestressing Association: lub zog ntawm cov khoom siv grouting rau 7 hnub thiab 28 hnub yuav tsum ncav cuag 21 MPa thiab 35 MPa feem.
Cov kev sim qhia tau hais tias ob qho tib si cov cement paste thiab cov khoom siv grouting tov nrog slag thiab silica fume tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov lus qhia.
Piv nrog rau cov cement paste, lub zog ntawm cov khoom siv grouting txo qis mus rau qhov sib txawv tom qab ntxiv cov ntxhia ntxiv, tshwj xeeb tshaj yog thaum ntxov zog. Txawm li cas los xij, raws li lub sij hawm tus yam ntxwv ntawm cov ntxhia admixtures koom nyob rau hauv lub thib ob hydration cov tshuaj tiv thaiv, raws li lub hnub nyoog nce, lub zog ntawm grouting cov ntaub ntawv uas tov nrog mineral admixtures yuav ncav cuag thiab tshaj lub zog ntawm cement paste.