抹灰砂浆的用量主要取决于抹灰厚度、砂浆配比及施工工艺等因素。以下是综合各来源信息的详细解答：

　　The amount of plastering mortar mainly depends on factors such as plastering thickness, mortar ratio, and construction technology. The following is a detailed answer that integrates information from various sources:

　　1. 常规用量计算

　　1. Conventional usage calculation

　　体积与重量换算： 若抹灰厚度为10毫米（0.01米），砂浆密度约为2000千克/立方米，则每平方米用量为： 体积 = 1㎡ × 0.01m = 0.01m? → 重量 = 0.01m? × 2000kg/m? = 20公斤/㎡。 若厚度增至15毫米，用量相应增至约30公斤/㎡。

　　Volume and weight conversion: If the plastering thickness is 10 millimeters (0.01 meters) and the mortar density is about 2000 kilograms per cubic meter, the dosage per square meter is: volume=1 ㎡ × 0.01m=0.01m ? → weight=0.01m ? × 2000kg/m ?=20 kilograms per square meter. If the thickness increases to 15 millimeters, the dosage will correspondingly increase to about 30 kilograms per square meter.

　　配比差异：

　　Proportion difference:

　　1:3水泥砂浆（底层）：每平方米约需0.01616m?（约16.16公斤）。

　　1: 3. Cement mortar (bottom layer): Approximately 0.01616m ? (approximately 16.16kg) is required per square meter.

　　1:2.5水泥砂浆（面层）：每平方米约需0.00693m?（约6.93公斤）。 综合损耗后，总用量约为 23公斤/㎡（含损耗）。

　　1: 2.5 Cement mortar (surface layer): Approximately 0.00693m ? (approximately 6.93 kilograms) is required per square meter. After comprehensive loss, the total usage is about 23 kilograms per square meter (including loss).

　　2. 不同墙面状况的用量差异

　　2. Differences in usage for different wall conditions

　　毛坯砖墙：分层抹灰（底层1.5cm + 面层0.5cm），总用量约 18-22公斤砂/㎡ + 6.5-8公斤水泥/㎡。

　　Rough brick wall: layered plastering (bottom layer 1.5cm+surface layer 0.5cm), with a total usage of approximately 18-22 kilograms of sand per square meter and 6.5-8 kilograms of cement per square meter.

　　混凝土墙面：因界面剂减少吸收，用量降低约10%，需 13-18公斤砂/㎡ + 4.5-6公斤水泥/㎡。

　　Concrete wall: Due to the reduced absorption of interface agent, the dosage is reduced by about 10%, requiring 13-18 kilograms of sand/㎡+4.5-6 kilograms of cement/㎡.

　　旧墙翻新：根据破损程度，用量可能增加10%-40%（如严重剥落时需21-25公斤砂/㎡）。

　　Renovation of old walls: Depending on the degree of damage, the usage may increase by 10% -40% (21-25 kilograms of sand per square meter may be required for severe peeling).

　　3. 施工工艺影响

　　3. Impact of construction technology

　　人工抹灰：损耗率约15%，需额外增加 2-3公斤砂/㎡ 和 0.5-1公斤水泥/㎡。

　　Artificial plastering: The loss rate is about 15%, and an additional 2-3 kilograms of sand per square meter and 0.5-1 kilogram of cement per square meter are required.

　　机械喷涂：材料利用率达90%，可节省8%用量，适合大面积施工。

　　Mechanical spraying: With a material utilization rate of 90%, it can save 8% of usage and is suitable for large-scale construction.

　　4. 特殊环境调整

　　4. Special environmental adjustments

　　潮湿区域：添加防水剂后，用量微增至 17-19公斤砂/㎡ + 6.8-7.5公斤水泥/㎡。

　　Wet area: After adding waterproofing agent, the dosage is slightly increased to 17-19 kilograms of sand per square meter+6.8-7.5 kilograms of cement per square meter.

　　寒冷地区：需添加防冻剂，水泥用量增加5%。

　　Cold regions: Antifreeze agent needs to be added, increasing cement usage by 5%.

　　5. 节省用料的技巧

　　5. Tips for saving materials

　　提前处理墙面凹陷，减少抹灰厚度。

　　Handle wall depressions in advance to reduce plaster thickness.

　　采用分层施工（2-3次）可节省15%材料。

　　Adopting layered construction (2-3 times) can save 15% of materials.

　　使用预拌砂浆减少10%浪费。

　　Reduce waste by 10% using pre mixed mortar.

　　总结

　　summary

　　常规情况下，抹灰砂浆用量为 20-30公斤/㎡，具体需根据厚度、配比和施工条件调整。建议预留5%-10%余量，并选择中粗砂和325硅酸盐水泥以保证质量。

　　Under normal circumstances, the amount of plastering mortar used is 20-30 kilograms per square meter, which needs to be adjusted according to thickness, mix ratio, and construction conditions. Suggest reserving a margin of 5% -10% and selecting medium coarse sand and 325 Portland cement to ensure quality.

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