什么是标准石膏厚度?

对于内墙,石膏厚度一般为12毫米. 对于外砖/混凝土表面,通常为15毫米至20毫米,有时被用在两件外衣上.

为什么干燥体积会超过石膏的湿体积?

干水泥颗粒和沙粒之间含有空隙. 加入水后,颗粒会紧密地组合并收缩体积. 用1.33的系数来调整这种收缩.

什么是最好的石膏混合比例?

天花板石膏和外墙通常使用1:4混合(1个部分水泥至4个部分砂). 1:6相配是内墙石膏的标准.

平板沙和水泥计算器

计算石膏工程所需的水泥和沙子数量。输入总的石膏面积,厚度,混合比例,和浪费,以获得即时物质计数.

Plastering Specifications

Plastering Area (square meters)

Thickness (mm)Typical: 12, 15, or 20mm.

Mix Ratio (Cement:Sand)

Cement Bag Size (kg)

Wastage Allowance (%)

Required Materials

Cement Required

-- kg

Sand Required

-- cft

Wet Mortar Volume

m� (cubic meters)

Dry Mix Volume

m� (including waste)

Sand Truck Loads (approximate):

Plaster Sand & Cement Estimate

Project Bill of Quantities (BOQ) Supporting Schedule

Date Generated:

Input Parameters

Plastering Area: --

Thickness: --

Allowance & Specifications

Mix Ratio (Cement:Sand): --

Cement Bag Size: --

Wastage Margin: --

Material Schedule Summary

Material Description	Required Quantity (Bags/Weight)	Volume (m� / CFT)
Cement (Dry Mix)	--	--
Sand (Fine Aggregate)	--	--

Wet Mortar Volume:

-- m�

Dry Mix Volume (incl. waste):

-- m�

Sand Delivery Estimation:

Estimation Method: Dry-to-Wet Mortar Factor (1.33) & Bulk Densities

Prepared By: Estimator / Project Engineer

Plaster Material Calculation Formula

We calculate material quantities based on wet-to-dry conversion factors and standard component weights:

Wet Volume (V_wet) = Area (m�) � [Thickness (mm) � 1000]

Dry Volume (V_dry) = V_wet � 1.33 � (1 + Wastage % � 100)

Cement Volume = V_dry � [1 � (1 + Ratio_Sand)]

Cement Weight = Cement Volume � 1440 kg/m�

Sand Volume = V_dry � [Ratio_Sand � (1 + Ratio_Sand)]

� 1.33 Factor: accounts for the shrinkage of cement-sand mix when dry ingredients are mixed with water (dry ingredients shrink by ~33%).

� 1440 kg/m�: standard bulk density of cement.

� Sand CFT Conversion: 1 cubic meter (m�) = 35.315 cubic feet (cft).

Was this tool helpful?

Send output to:

How to use Plaster Sand & Cement Calculator

入墙面面积以平方公尺或平方尺为单位.
输入设计石膏厚度(标准为12毫米至20毫米).
选择水泥与砂的混合比例(如:1:3,1:4,1:5或1:6)并读取砂和水泥的结果.

{姓名}是什么来着?

用水泥、沙子和水的迫击炮混合物来保护和完成墙壁。在估计材料时,建造者必须将"湿"的石膏体积转换为"干"体积,因为干水泥和沙子与水相混合后会收缩(收缩系数为1.33为标准). 联合填充和表面不均匀还须增加额外体积。

这种石膏计算器进行所有干量的翻译,应用混合比(如1:4或1:6),并输出水泥的确切重量/袋和所需沙量。

FAQ

什么是标准石膏厚度?: 对于内墙,石膏厚度一般为12毫米. 对于外砖/混凝土表面,通常为15毫米至20毫米,有时被用在两件外衣上.
为什么干燥体积会超过石膏的湿体积?: 干水泥颗粒和沙粒之间含有空隙. 加入水后,颗粒会紧密地组合并收缩体积. 用1.33的系数来调整这种收缩.
什么是最好的石膏混合比例?: 天花板石膏和外墙通常使用1:4混合(1个部分水泥至4个部分砂). 1:6相配是内墙石膏的标准.

Related tools

Author

Omar Hassan"The Number Cruncher"

Engineer & Unit Conversion Specialist

Omar is a mechanical engineer by training and a unit-conversion enthusiast by passion. He has built calibration systems for aerospace and automotive manufacturers and knows firsthand how a single decimal error can cost millions in rework. His mission is to make every conversion instant, accurate, and accessible to everyone, whether they are a student, tradesperson, or practicing engineer, with no advanced degree required.

📖 Plaster Sand & Cement Calculator on Wikipedia·Construction Calculators on Wikipedia·Plaster Sand & Cement Calculator on Britannica