T/DASI 001-2019 Thin layer pre-mixed dry mixed mortar

Scope

Scope: This standard specifies the terms and definitions, classification and marking, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of thin-layer pre-mixed dry mortar. This standard applies to thin-layer pre-mixed dry mortar; Main technical content: The main content includes determining the performance requirements of major technical indicators, test methods, and inspection rules. This standard is prepared based on JGJ/T 70 "Standard for Test Methods of Basic Performance of Construction Mortar" and in accordance with actual circumstances. 1. Performance indicators: Referring to JGJ/T 70 "Standard for Test Methods of Basic Performance of Construction Mortar", the indicators for thin-layer pre-mixed dry mortar in masonry and plastering types are specified. Among them, the masonry type includes: dry density, setting time, water retention rate, compressive strength, shrinkage value, and frost resistance; the plastering type includes: dry density, setting time, water retention rate, tensile bond strength, compressive strength, shrinkage value, water absorption, and frost resistance. 2. Modification of the water retention rate indicator: After multiple tests, it is proven that the performance of products with a water retention rate in the range of 95%~99% is basically the same. Considering the production cost and other factors, the water retention rate indicator value in this standard is changed from 99% to 95%~99%. 3. Product characteristics: Thin-layer pre-mixed dry mortar is a powdery mixture made from hydraulic binder materials, mineral aggregates, and organic additives mixed in a certain proportion. It needs to be mixed with water or other liquids when used. This product has good water retention, strong adhesion, time-saving, material-saving, space-saving, easy workability, and convenient construction characteristics.

Development Information

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