Plastic stabilizer for wet-mixed mortar

Abstract

The invention discloses a plastic stabilizer for wet-mixed mortar. The plastic stabilizer comprises the following components in parts by weight: 0.1-5 parts of a water retention agent, 0.1-5 parts of an air entraining agent, 0.1-1 part of a defoaming agent, 0.01-1 part of water soluble polysaccharide, 1-10 parts of a special effect retarder, 1-10 parts of a water reducing agent and 68-98 parts of water. The plastic stabilizer for the wet-mixed mortar, provided by the invention, is liquid, is beneficial for automatic feeding and metering, and overcomes the defects that most mortar additives on the market are solid powder products and cannot realize automatic metering. Meanwhile, the water retention rate of the plastic stabilizer for the wet-mixed mortar, provided by the invention, can reach 98%, so that the setting time of the mortar can be deferred to 10-72 hours.

Description

technical field [0001] The invention relates to a plastic stabilizer for wet-mixed mortar. Background technique [0002] In 2007, the six ministries and commissions of the country jointly issued a document prohibiting some cities from mixing cement mortar at the construction site. Since then, ready-mixed mortar has been gradually applied. Ready-mixed mortar can be divided into dry-mixed mortar and wet-mixed mortar. The disadvantages of dry-mixed mortar are: during bulk shipment and storage, due to the large density difference between cement and sand, pneumatic conveying is likely to cause the stratification of cement and sand, and the uniformity is poor; while bagged dry-mixed mortar is mixed on site. It will cause secondary pollution; in addition, dry-mixed mortar needs to be used after drying the sand in the production process, and the drying cost is high, which is not conducive to energy saving and environmental protection. For wet-mixed mortar, all the materials are pr...

AI Technical Summary

Problems solved by technology

The disadvantages of dry-mixed mortar are: during bulk shipment and storage, due to the large density difference between cement and sand, pneumatic conveying is likely to cause the stratification of cement and sand, and the uniformity is poor; while bagged dry-mixed mortar is mixed on site. It will cause secondary pollution; in addition, dry-mixed mortar needs to be used after drying the sand in the production process, and the drying cost is high, which is not conducive to energy saving and environmental protection

[0003] However, after ordinary mortar is mixed, it will lose its plasticity after 4 hours and cannot be used. However, wet-mixed mortar is mixed in a mixing station and transported to the site by a mixer truck. The single transportation volume is large, and it usually takes more than 6 hours or even longer. It takes a long time to use up, which requires that the mortar should maintain plasticity for a long time