... strength J ≥6.0Water-absorption g/m2≤500 (soaking for 24 hours) Water-tightness No water penetrated into the inside of ... resistance, Freeze-thaw resistance, toughness, not crackedWill crack, water seepage in crack place, easy to appear the phenomenon of ... thermal break Joint qualityEasy processing, rarely crack, no water seepage, interface flatDifficult to control, joint place cracking serious, ...