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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 is not conducive to the environment. protection; some mortar admixtures can improve the working performance of mortar to a certain extent, but the strength is low;
In addition, the mortar admixtures on the market are all added in a single mixing method, which cannot easily control the performance of the mortar

Method used

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

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preparation example Construction

[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 the weight percentage, add the retarder, the water-retaining agent, and the reinforcing agent in sequence according to the weight percentage, start stirring to mix the materials evenly, and then slowly add the 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 reducing agent in sequence according to weight percentage, and stir evenly to prepare material B.

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

Embodiment 1

[0045]Take 95.1g of water, add 2.5g of retarder, 0.5g of water-retaining agent, and 1.0g of reinforcing agent in order to start stirring to mix the materials evenly, 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 reducing agent and 0.3g of shrinkage reducing agent in sequence, and stir well 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 reinforcing agent is triethanolamine; It is maltodextrin; the water reducer is polycarboxylate high-performance polyester water reducer; and the shrinkage reducer is polyethylene glycol.

Embodiment 2

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

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

[0051] Wherein, the air-entraining agent is sodium lauryl sulfate; the retarder is a mixture of sodium pyrophosphate and citric acid, by mass ratio, sodium pyrophosphate: citric acid=1.6:1.0; the anti-cracking agent is hydroxypropyl Methyl cellulose; the strengthening agent is triethanolamine; the water-retaining agent is maltodextrin; the water-reducing agent is polycarboxylate high-performance polyester water-reducer; the 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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