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以氟石膏为主要胶凝材料通过掺加各种外加剂、骨料等对其进行改性处理,制得氟石膏基自流平地坪砂浆,优化配方为:氟石膏75～90 w%,激发剂10～25 w%,减水剂0.25～1 w%,可再分散乳胶粉0～4 w%,稳定剂0.05～0.1 w%和粉煤灰0～5 w%;流动度达240mm,绝干抗折强度为8.3 MPa,绝干抗压强度为26.7 MPa,拉伸粘结强度为0.64MPa,收缩率为0.049%,性能均达到日本住宅公团标准要求。在800mm×800mm水泥基地上进行实验,经过3 d砂浆表面光滑,未发现裂纹。
Fluorogypsum as the main cementitious material by adding a variety of additives, aggregate, etc. to be modified to obtain fluorinated gypsum-based self-leveling floor mortar, the optimal formula is: fluorine gypsum 75 ~ 90 w%, the activator 10-25 w%, water reducing agent 0.25-1 w%, redispersible polymer powder 0-4 w, stabilizer 0.05-0.1 w% and fly ash 0-5 w%, fluidity of 240 mm, absolute dry The flexural strength is 8.3 MPa, the absolute dry compressive strength is 26.7 MPa, the tensile bond strength is 0.64 MPa, the shrinkage rate is 0.049%, and the performance meets the standards of Japanese residential public corporation. Experiments were carried out on a cement base 800 mm × 800 mm. After 3 days, the mortar surface was smooth and no cracks were found.