一袋砂浆能砌多少块？

按 1 厘米灰缝，每袋 32 公斤约可砌 33 块标准砌块；若砌砖，约 14 块。

应该用哪种砂浆？

地面以上墙体多用 N 型，需要更高强度的部位（如地面以下或强风地区）用 S 型，基础和挡土墙用 M 型。O 型较软，仅用于历史砌体修缮。

配制砂浆需要多少砂？

若用水泥和砂自行配制，每袋 32 公斤当量约需 1.1 立方英尺砌筑砂。预拌砂浆已含砂，只需加水。

砂浆的可操作时间有多久？

视气温约 90 分钟到两个半小时。在此时间窗内可加少量水回调一次；一旦开始初凝就必须废弃。

灰缝应该多厚？

砖和砌块的标准灰缝均为 1 厘米，名义尺寸就是按此设定的。灰缝偏厚或偏薄都会让整面墙的皮数逐渐错位。

砂浆计算器

按所用灰缝厚度，计算砌筑砌块、砖或石材所需的砂浆袋数与砂子用量。

公式与数据最后核对于 2026年8月6日 — Cosyslabs

输入

砌筑什么？

砌体数量

灰缝厚度(in)

每袋单价（选填）($)

Result

Mortar bags (70 lb)

Sand needed

16.9 ft³

Units: 500 block
Joint thickness: 0.375 in
Sand in cubic yards: 0.63 yd³

Diagram

Estimates only. Verify with a licensed contractor or supplier before purchasing. Rough Estimator! is not responsible for shortages, overages, or material variances. See our methodology for formulas and sources.

公式

袋数 = (数量 ÷ 100) × 基准用量 × (灰缝 ÷ 0.375)

参考资料

Measure what the tool asks for
This calculator works from 灰缝厚度 in in and 每袋单价（选填） in $. Measure the finished area you are covering, not the material — an estimate is only as good as the dimensions you feed it.
What it does with those numbers
袋数 = (数量 ÷ 100) × 基准用量 × (灰缝 ÷ 0.375) Every figure on the page comes out of that one expression, so you can check it by hand.
Choosing a 砌筑什么？
提示：同样面积的墙，砖的灰缝比砌块多得多，因此每块砖的砂浆用量是砌块的两倍以上。
Where the numbers come from
The constants are taken from ASTM C270 — Standard Specification for Mortar for Unit Masonry and Portland Cement Association — Masonry mortar guidance, linked in full below. If a figure here disagrees with your supplier's spec sheet, use the spec sheet — it describes the product you are buying.
What this will not tell you
This is a material takeoff, not a bid. It does not price labour, permits, delivery, equipment hire or site preparation, and it assumes a straightforward layout. Complex cuts, difficult access and awkward shapes all cost more than the geometry suggests.

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砌筑砂
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勾缝器
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砌筑线

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常见问题

按 1 厘米灰缝，每 100 块砌块约三袋 32 公斤装，每 100 块砖约七袋，每 100 块石材约十袋。灰缝更厚时按比例增加。

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Cite this page

Cosyslabs. (2026). 砂浆计算器. Rough Estimator!. https://roughestimator.com/zh/mortar-calculator

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