First: raw material storage requirements:
1). After drying, the water content of the fine aggregate should be less than 0.5%, and the moisture content of other fine aggregates should be less than 1.0%.
2). Sand should be sifted according to different particle sizes and stored in different special silos to ensure uniform particles.
3). All raw materials should be stored in a special silo and clearly marked.
Second: the measurement accuracy should be:
1). Measurements should be measured by quality standards and measurement errors should be in accordance with national deviation measurements.
2). The measuring equipment shall be a valid and valid certificate issued by the measuring department.
3). The measuring equipment must meet the production of different types of dry mortar.
Third: uniform mixing:
1). The production line should be controlled by a computer program.
2). Mortar powder materials must be mechanically mixed to ensure uniform mixing of the ingredients.
3). Mixers and conveying equipment should be cleaned when changing the production of different mortars.
Fourth: The requirements for storage and transportation of packaged finished products should be noted:
1). Dry mortar can be divided into bulk bags and powder bags. The quality of each bag should not be less than 98% of the quality of the mark.
2). Dry mortar packaging paper bags should comply with relevant regulations. Ordinary mortar powder bags should be marked with the product name, symbol, strength grade, manufacturer name, address, net content, water content range and shelf life, packaging year, month, day, quantity and CIE standard number; the product name should be indicated on the special packaging. Production of dry mortar factory name and address, net content, water content range, shelf life, packaging year, month, day, code and standard.
3). Bulk dry mortar for canned cars transports dry mortar to the construction site and signs the contents of the same bag.
4). A dry mortar bag with a shelf life of 3 months. Bulk dry mortar products must be stored in a specially sealed silo with rain protection and a quality guarantee period of no more than 3 months. Mortars of different varieties or strength grades shall be stored separately and shall not be mixed.
5). Avoid wet mortar storage and transportation.