What does ds20 dp 15 on the ready-mixed mortar mean?

Ready-mixed mortar DS20 refers to: ground mortar, corresponding to the traditional 1: 2.5 cement mortar; Ready-mixed mortar DP 15 refers to plastering mortar, which corresponds to the traditional 1: 3 cement mortar.

Ready-mixed mortar refers to various mortar mixtures produced by professional manufacturers and used in construction projects. It is a new building material developed in China in recent years, which can be divided into ordinary ready-mixed mortar and special mortar according to its performance.

For details, please refer to the following figure:

Extended data:

1. Different storage methods of ready-mixed mortar

(1) storage of wet mixed mortar

The construction site shall be equipped with wet-mixed mortar storage containers, which shall meet the following requirements:

(1) The storage container shall be sealed and not absorb water;

(2) The quantity and capacity of storage containers shall meet the mortar varieties. Requirements for supply;

③ When the storage container is used, there should be no sundries or clear water inside;

(4) storage containers should be convenient for storage, transportation, cleaning and access to mortar;

(5) The mortar channel shall be provided with rainproof measures;

⑥ Shading and heat preservation measures should be taken for storage containers. ?

Wet-mixed mortar with different varieties and strength grades should be stored in different storage containers, and the storage containers should be marked, which should include the varieties, strength grades and service life of mortar. Mortar should be stored before use.

Wet-mixed mortar shall not be added with water during storage and use. Mortar storage process, there is a small amount of bleeding, should be mixed evenly before use. After the mortar is used up, the storage container should be cleaned immediately.

The ambient temperature of the storage place of wet mixed mortar should be 5℃~35℃.

(2) Dry-mixed mortar storage

Different varieties of bulk dry-mixed mortar should be stored separately in bulk mobile silos, and the silos should be marked. The number of silos should meet the requirements of mortar varieties and construction. When changing mortar varieties, the silo should be emptied.

Silos shall conform to the current industry standard SB/T 1046 1-2008 "Dry-mixed Mortar Bulk Moving Silos" and shall be firmly installed on the site.

Bagged dry-mixed mortar should be stored in a dry, ventilated, moisture-proof and rain-proof place, and stacked separately according to the variety and batch number, and should not be mixed, and should be stored before use. Organic materials in matching components shall be stored in a cool, dry and ventilated place, away from fire and heat sources, and shall not be stored in the open air or exposed to the sun. The storage environment temperature should be 5℃~35℃.

In the process of storage and use of bulk dry-mixed mortar, when there is doubt or controversy about the uniformity of mortar quality, the uniformity inspection should be carried out regularly according to the relevant provisions of GB/T 25181-2010.

2, ready-mixed mortar use requirements

(1) The variety selection of ready-mixed mortar shall be determined according to the design and construction requirements.

(2) Different varieties and specifications of ready-mixed mortar should not be mixed.

(3) Before the ready-mixed mortar construction, the construction unit shall prepare the construction plan according to the design and engineering requirements and the product specifications of the ready-mixed mortar, and carry out the construction according to the construction plan.

(4) During the construction of ready-mixed mortar, the construction environment temperature should be 5℃ ~ 35℃. When the temperature is lower than 5℃ or higher than 35℃, measures should be taken to ensure the engineering quality. Ready-mixed mortar construction should not be carried out under outdoor environmental conditions of wind, rain and snow above level 5.

(5) The construction unit shall establish a system of self-inspection, mutual inspection and full-time personnel inspection for each working procedure, and have a complete construction inspection record.

(6) The compressive strength and solid tensile bond strength of ready-mixed mortar shall be determined according to the acceptance criticism.

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