Wet-mixed mortar admixture as well as preparation method and application thereof

A wet-mixed mortar and admixture technology, applied in the field of construction mortar, can solve the problems of poor water retention, unsatisfactory mortar operability, short opening time, etc., to increase compressive strength and bond strength, improve workability and Water retention rate, easy to use and operate

Active Publication Date: 2014-11-05
四川恒泽建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are some mortar admixtures that improve the performance of ordinary wet-mixed mortar in the domestic construction market, but there are some problems: some mortar admixtures are solid powders, and there is a lot of dust in the process of production, processing and transportation, which

Method used

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  • Wet-mixed mortar admixture as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] The preparation method of the wet-mixed mortar admixture of the present invention is as follows: weigh an appropriate amount of water according to weight percentage, add retarder, water-retaining agent, and strengthening agent in sequence according to weight percentage, start stirring to make the materials evenly mixed, slowly add air-entraining agent and Anti-cracking agent and fully stirred to prepare material A; weigh an appropriate amount of water according to weight percentage, add water reducing agent and shrinkage reducer in order according to weight percentage, and stir evenly to prepare material B.

[0029] The invention also provides the application of the wet-mixed mortar admixture of the invention in the wet-mixed mortar. The wet-mixed mortar admixture of the present invention is preferably added to the wet-mixed mortar in a double-mixing manner, that is, the A material and the B material are added to the wet-mixed mortar separately. Wherein, the amount of mate...

Example Embodiment

[0044] Example 1

[0045] Take 95.1g of water, add 2.5g of retarder, 0.5g of water-retaining agent, 1.0g of enhancer, start stirring to make the materials evenly mixed, then slowly add 0.8g of air-entraining agent and 0.1g of anti-cracking agent, and fully stir to obtain A material.

[0046] Take 96.7g of water, add 3g of water reducer and 0.3g of shrinkage reducer in sequence, stir evenly to obtain material B.

[0047] Wherein, the air-entraining agent is sodium lauryl sulfate; the retarder is sodium gluconate; the anti-cracking agent is hydroxypropyl methylcellulose; the enhancer is triethanolamine; the water-retaining agent It is maltodextrin; the water reducing agent is a polycarboxylic acid high-performance polyester water reducing agent; and the shrinkage reducing agent is polyethylene glycol.

Example Embodiment

[0048] Example 2

[0049] Take 94.1g of water, add 2.5g of retarder, 0.5g of water-retaining agent, 1.0g of enhancer, start stirring to make the materials evenly mixed, then slowly add 1.8g of air-entraining agent and 0.1 of anti-cracking agent, and fully stir to obtain material A .

[0050] Take 96.7g of water, add 3g of water reducer and 0.3g of shrinkage reducer in sequence, stir evenly to obtain material B.

[0051] Among them, the air-entraining agent is sodium lauryl sulfate; the retarder is a mixture of sodium pyrophosphate and citric acid, in terms of mass ratio, sodium pyrophosphate:citric acid = 1.6:1.0; anti-cracking agent is hydroxypropyl Methyl cellulose; enhancer is triethanolamine; water-retaining agent is maltodextrin; water-reducing agent is polycarboxylate high-performance polyester water-reducing agent; anti-cracking agent is polyethylene glycol.

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Abstract

The invention relates to a wet-mixed mortar admixture as well as a preparation method and application thereof, and belongs to the technical field of building mortar. For solving technical problems, the invention provides the wet-mixed mortar admixture consisting of a material A and a material B, wherein the material A consists of the following components in percentage by weight: 0.8-2% of air entraining agent, 2-4% of retarder, 0.06-0.15% of anti-cracking agent, 0.6-1.2% of reinforcing agent, 0.3-0.7% of water retaining agent and the balance of water; the material B consists of the following components in percentage by weight: 3-12% of water reducing agent, 0.2-0.5% of shrinkage reducing agent and the balance of water. The wet-mixed mortar admixture disclosed by the invention is high in water reducing rate, environment-friendly, and can be used for improving the open time, workability and water retaining rate of mortar and improving the compressive strength and the bonding strength; by adopting a double-mixing manner of the materials A and B, the consumption of the material A or B can be effectively adjusted according to the performance of the mortar, and the performance of the mortar can be easily controlled.

Description

technical field [0001] The invention relates to a wet-mixed mortar admixture and a preparation method and application thereof, belonging to the technical field of building mortar. Background technique [0002] After the Ministry of Commerce, together with the departments of public security, transportation, construction, quality supervision, and environmental protection, issued the "Notice on Prohibiting On-site Mixing of Mortar in Some Cities within a Time Limit", mortar in construction projects has gradually been replaced by commercial mortar. There are two types of commercial mortars: dry mix and wet mix. Dry-mixed mortar is a dry powder building material that is composed of solid materials such as cementitious materials, mineral admixtures, fine aggregates, and admixtures, and is pre-mixed through a dry-mixing process according to a certain ratio. However, since the dry-mixed mortar is easy to segregate during transportation, and the raw sand needs to be dried and then s...

Claims

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Application Information

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IPC IPC(8): C04B24/38
Inventor 任豪
Owner 四川恒泽建材有限公司
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