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Polymer emulsion modified rapid repair mortar and preparation method thereof

A technology of polymer emulsion and repair mortar, which is applied in the field of building materials, can solve the problems of no literature reports and unsuitability, and achieve the effects of improving brittleness, increasing flexural strength, and increasing bond strength

Active Publication Date: 2013-05-08
BEIJING ZHONGYANYI ENG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For acrylic emulsion, it is generally believed that the emulsion has a great retarding effect on cement substrates, and is not suitable for preparing quick-repair mortars. Therefore, there is no literature report on the preparation of quick-repair mortars.

Method used

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  • Polymer emulsion modified rapid repair mortar and preparation method thereof
  • Polymer emulsion modified rapid repair mortar and preparation method thereof
  • Polymer emulsion modified rapid repair mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The following method is used to prepare polymeric emulsion modified quick repair mortar, and the specific method comprises the following steps:

[0031]Pour 20 kg of acrylic emulsion (18 kg of 209 emulsion, 2 kg of 510TS emulsion) and 0.1 kg of defoamer into a container and stir evenly for later use. 42.5 sulfoaluminate early-strength cement produced by the cement plant) and 2.2 kg of polypropylene fiber are dispersed evenly, and then 230 kg of quartz sand, 0.9 kg of high-efficiency water reducer, 0.15 kg of retarder, and 0.1 kg of early-strength agent are added and stirred evenly When in use, add the liquid material in the container to the prepared powder in proportion, and add about 28 kg of water to adjust the consistency of the mortar, and stir for 3 to 5 minutes to obtain the repair material.

[0032] Refer to the performance testing method in "Polymer Cement Waterproof Mortar" JC / T 984-2005 to test the polymer emulsion modified quick repair mortar of the present i...

Embodiment 2～5

[0037] The raw materials in Table 2 were used to prepare rapid repair mortar in the same manner as in Example 1, and the test results are shown in Table 3.

[0038] Table 2 Rapid Repair Mortar Raw Materials

[0039] Raw material (kg)

Example 2

Example 3

Example 4

Example 5

Sulfur-aluminate early-strength cement

100

100

100

100

Quartz sand

250

200

250

300

Superplasticizer

0.8

1.0

1.2

0.9

retarder

0.25

0.10

0.20

0.5

early strength agent

0.2

0.15

0.05

0.18

Polypropylene fibers

2.5

2.2

2.0

2.3

209 lotion

27

18

21.6

22.5

510TS emulsion

3

2

2.4

2.5

Defoamer

0.12

0.15

0.12

0.1

water

26

30

20

21

[0040] Table 3 Performance testing of quick repair ...

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Abstract

The invention discloses a polymer emulsion modified rapid repair mortar and a preparation method thereof, and the rapid repair mortar consists of acrylic emulsion, a defoamer, sulphoaluminate early strength cement, quartz sand, a high-efficiency water reducing agent, an early strength agent, a retarder and polypropylene fiber, and can be widely used in rapid repair projects of damaged concrete and mortar and concrete surface leveling and protection. The rapid repair mortar has the advantages of good waterproof performance, long operation time of construction, fast strength increase and good durability.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a polymer emulsion modified cement rapid repair mortar and a production method thereof. Background technique [0002] Concrete and reinforced concrete are widely used in various fields as the main building materials. During the long-term use of concrete structures, they are affected by factors such as heavy loads, freeze-thaw cycles, chloride ion penetration, surface abrasion, and erosion of corrosive media. Many concrete structures have cracked, peeled, and hollowed out, which greatly affects the service life of the project. my country is one of the countries with frequent earthquakes. The earthquake has a very large damage to the existing concrete buildings, including civil buildings, concrete pavements, bridge decks, and concrete in industrial plants. The damage to mortar and concrete is naturally very serious. . For the concrete structures damaged in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/36C04B24/26C04B22/10
CPCC04B28/06C04B2111/27C04B2103/0008C04B28/065C04B14/06C04B14/26C04B16/0633C04B20/0076C04B24/2641C04B2103/22C04B2103/302C04B2103/50C04B22/0013C04B24/223
Inventor 王志新李清海刘召召刁桂芝
Owner BEIJING ZHONGYANYI ENG TECH DEV CENT
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