Detailed Specification Of Plastering Cement Mortar
The detailed specification is a document that specifies the method of measurement, method of execution, method of preparation, proportion of materials, quality, quantities of materials, etc.
Here are the step by step detailed specifications of plastering cement mortar-
Detailed Specification Of Plastering Cement Mortar
1- Materials
The materials in the plastering cement mortar are cement and sand in a specified proportion.
The sand is of good quality and must be free from dust and other organic materials.
In the plastering cement mortar, the cement shall be fresh portland cement according to the I.S. code.
During the preparation of mortar, the potable type of water shall be used.
2- Preparation Of Mortar
During the preparation of mortar, the cement and sand are thoroughly mixed without water till uniform colour is obtained.
After the uniform color is obtained a required amount of potable water is added into the dray mixed mortar and mixed the mortar thoroughly until a uniform consistency is obtained.
The prepared mortar shall be used within the initial setting time of cement and this initial setting time for Ordinary Portland Cement is a minimum of 30 minutes.
3- Preparation of Surface
The brickwork surface which is going for the plastering work must be cleaned, brushed, and keep the surface wet for two days before the plastering.
In the case of cement concrete surface, the face is lightly roughened, cleaned, and the surface is wet for two days before the plastering.
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4- Laying Of Mortar
In the process of plastering, first ceiling plastering must be completed before the starting of wall plastering.
The thickness of plastering is usually 12mm applied in two or three coats.
The plater thickness must be uniform throughout the whole surface and it is ensured by using a 1-meter strip which is applied on the laid mortar as a guider.
The smooth and uniform surface is obtained by applying the float, trowel on the laid mortar.
5- Curing
The plaster surface must be protected against rain, storm, or other atmospheric agents which affect the plaster surface.
The water is poured on the plaster surface to keep the surface wet after 12 hours of plastering work at least for 7 days continuously.
6- Measurement
During the measurement of plastering, a proper deduction for each opening shall be considered.
The measurement of plastering is carried out in square meters of surface area.
If the height of exterior plastering is greater than 10 meters from ground level then it shall be measured separately.
The plastering of the ceiling is considered a separate item.
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