抹面砂浆一平米大致需要的水泥是20斤，沙子是60斤，具体还需要看抹面砂浆层的厚度和强度。如抹面砂浆层为20mm，水泥砂浆中的水泥与沙子比例是1比3的话，那么需要的沙子量=体积(1m×1m×0.02m)×砂浆密度1500=30公斤=60斤。而需要的水泥量=1/3×沙子量60=20斤。

　　The approximate amount of cement and sand required for one square meter of plastering mortar is 20 pounds and 60 pounds, respectively, depending on the thickness and strength of the plastering mortar layer. If the plastering mortar layer is 20mm and the cement to sand ratio in the cement mortar is 1:3, then the required amount of sand=volume (1m x 1m x 0.02m) x mortar density 1500=30 kilograms=60 pounds. And the required amount of cement is 1/3 x the amount of sand is 60=20 pounds.

　　抹面砂浆的注意事项有哪些

　　What are the precautions for plastering mortar

　　1、抹面砂浆前对基层必须处理千净，光滑表面应做毛化处理，浇水湿润。抹面砂浆时应分层进行，每层抹面砂浆不应过厚，并严格控制间隔时间，抹完后及时浇水养护，以防空鼓、开裂。

　　1. Before applying the mortar, the base layer must be thoroughly cleaned, and the smooth surface should be roughened and moistened with water. When plastering mortar, it should be done in layers, and each layer of plastering mortar should not be too thick, and the interval time should be strictly controlled. After plastering, it should be watered and cured in a timely manner to prevent air bulging and cracking.

　　2、安装窗框时标高应统一，尺寸应准确，框四周应留有抹面砂浆量，以防抹面砂浆吃口。

　　2. When installing the window frame, the elevation should be uniform, the size should be accurate, and there should be enough mortar around the frame to prevent the mortar from eating.

　　3、抹面砂浆时避免将接搓放在大面中间处，一般应留在分格缝或不明显处，防止产生接搓不平。

　　3. When applying mortar, avoid placing the joint in the middle of the large surface. Generally, it should be left at the dividing joint or an inconspicuous place to prevent uneven joint.

　　4、抹面砂浆前混凝土表面凿毛洒水湿润后涂刷1:1水泥砂浆，陶粒砌块墙面湿润后，边刷界面剂边抹面砂浆。

　　4. Before plastering the mortar, chisel the concrete surface and sprinkle water to moisten it, then apply 1:1 cement mortar. After moistening the ceramic block wall, brush the interface agent while plastering the mortar.

　　5、若墙面不做涂饰时，砂浆应用同品种、同批号的水泥，罩面压光应避免在同一处过多抹压，以防造成表面颜色深浅不一。

　　5. If the wall is not painted, the mortar should be made of cement of the same variety and batch number. The surface should be smoothed to avoid excessive pressure on the same area to prevent uneven surface color.

　　6、淋制灰膏或泡制磨细生石灰粉时，熟化时间必须达到规定天数，防止因灰膏中存有未熟化的颗粒，造成抹面砂浆层爆裂，出现开花、麻点。

　　6. When pouring mortar or soaking finely ground quicklime powder, the curing time must reach the specified number of days to prevent the mortar layer from bursting, blooming, and pitting due to the presence of immature particles in the mortar.

　　7、现浇混凝土预板抹面砂浆基层必须进行毛化处理，抹面砂浆厚度不得过厚，防止因粘结不牢，开裂脱落，造成伤人的质最事故。必要时，施工前应经监理、建设单位确认，采取相应的技术措施，选用先进的模板及支撑体系，使项板结构表面达到不抹面砂浆即可做涂饰施工的效果。

　　7. The base layer of the cast-in-place concrete precast slab plastering mortar must be roughened, and the thickness of the plastering mortar should not be too thick to prevent accidents such as injury caused by weak bonding, cracking and detachment. When necessary, it should be confirmed by the supervisor and the construction unit before construction, and corresponding technical measures should be taken. Advanced templates and support systems should be selected to achieve the effect of coating the surface of the slab structure without plastering mortar.

　　8、抹面砂浆前墙面做灰饼时，必须做到挂线并注意开间轴线，严格控制墙板厚度开间轴线均匀，灰饼必须垂直，平整，通顺一致，灰饼间距不宜过大。

　　8. When making mortar cakes on the wall before plastering, it is necessary to hang lines and pay attention to the spacing axis. The thickness of the wall panel should be strictly controlled, and the spacing axis should be uniform. The mortar cakes must be vertical, flat, smooth, and consistent, and the spacing between the mortar cakes should not be too large.