What is the standard number of general plastering cement mortar?1:2.5 or 1:3

The standard number of plastering cement mortar is 1:3.

According to "Masonry mortar proportion design regulations" JGJ/T98-2010, the masonry mortar of M15 and the following strength level should be used for the general purpose of the 32.5 grade of silica-salt cement or masonry cement; the masonry mortar of the strength level of M15 and above should be used for the general purpose of the 42.5 grade of silica-salt cement.?

The standard of plastering cement mortar is 1:3, 32.5 cement. Plaster mortar standard is M10.

Cement mortar standard is generally M2.5 M5 M7.5 M10 M15, etc., 1:2.5 refers to the proportion of cement and sand dosage configuration.

1:3 cement mortar, its strength can reach the minimum standard strength of the cement you use, 100%, that is, M30.

1:2.5 cement mortar, its strength can reach the minimum standard strength of the cement you use, about 120%, that is, M35.

1:2 cement mortar, its strength can reach the minimum standard strength of the cement you use, about 140%, that is, M35.

1:2 cement mortar, its strength can reach the minimum standard strength of the cement you use, about 140%, that is, M35. The minimum strength of a 1:2 cement mortar is about 140% of the standard strength of the cement you are using, i.e., M40.

Expanded:

Based on the different functions of the plastering mortar, the plastering mortar can be divided into ordinary plastering mortar, decorative mortar and plastering mortar with some special functions (such as waterproof mortar, insulation mortar, sound-absorbing mortar and acid-resistant mortar, etc.). The plastering mortar is required to have good compatibility, easy to wipe into a uniform and flat thin layer, easy to construct.

There should also be a high adhesion, the mortar layer should be able to adhere to the bottom surface and solid, long-term cracking or peeling. In a humid environment or susceptible to external parts (such as the ground and wainscoting, etc.), should also have a high water resistance and strength.

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