High-ductility waterproof anti-crack composite mortar as well as mixing method and construction process thereof

A composite mortar with high ductility, applied in construction, building construction, covering/lining, etc., can solve the problems of reduced mechanical properties and durability, poor strength and durability, and short operating time, and achieve improvement Effects of strength, improved compactness, and excellent durability

Active Publication Date: 2020-04-14
西安五和新材料科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when mixed with general waterproofing agents, the mechanical properties and durability will be reduced, and the operation time will be short, so it is not suitable for practical projects;
[0006] (3) In recent years, aiming at the problem of cracks in the

Method used

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  • High-ductility waterproof anti-crack composite mortar as well as mixing method and construction process thereof
  • High-ductility waterproof anti-crack composite mortar as well as mixing method and construction process thereof
  • High-ductility waterproof anti-crack composite mortar as well as mixing method and construction process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] According to the quality ratio of the raw materials in Table 1, the mortar is mixed with the following methods:

[0028] (1) Take cement, fly ash, mineral powder, lime powder, silica fume, primary admixture, redispersible latex powder, waterproofing agent, hydroxypropyl methylcellulose, epoxy emulsion, curing agent, expansion Put the polyvinyl alcohol powder and water reducing agent into the mixer and stir for 30s at the speed of 45~70r / min, then add the quartz sand and continue to stir for 30s at the same speed;

[0029] (2) Then add water and stir at the same speed for 3 to 5 minutes, and finally add polyvinyl alcohol fiber, stir for 3 to 5 minutes to obtain a high ductility waterproof and crack resistant composite mortar.

[0030] Table 1 Formulation table of high ductility waterproof and anti-crack composite mortar (unit: Kg / m 3 )

[0031]

[0032]

[0033] Table 2 shows the test results of toughness, waterproof and crack resistance performance and strength performance of t...

Embodiment 2

[0051] Prepare the mortar according to the raw materials shown in Table 6.

[0052] Table 6

[0053]

[0054]

[0055] Table 7 shows the test of toughness, waterproof and crack resistance performance and strength performance of the mortar in this embodiment.

[0056] Table 7

[0057]

[0058]

Embodiment 3

[0060] Prepare the mortar according to the formula shown in Table 8.

[0061] Table 8 (Unit: Kg / m 3 )

[0062]

[0063]

[0064] The related performance test results of the mortar prepared in this embodiment are shown in Table 9.

[0065] Table 9

[0066]

[0067]

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PUM

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Abstract

The invention discloses high-ductility waterproof anti-crack composite mortar and a mixing method and a construction method thereof. The mortar is prepared from cement, fly ash, mineral powder, lime powder, silica fume, a primary admixture, quartz sand, redispersible latex powder, a waterproof agent, polyvinyl alcohol powder, a water reducing agent, an epoxy emulsion, a curing agent, hydroxypropylmethyl cellulose, an expanding agent and polyvinyl alcohol fibers. According to the disclosed mixing method, a reasonable feeding sequence is adopted to obtain a uniform mortar material. The construction method provided by the invention adopts construction steps suitable for the mortar provided by the invention for different building environments. The composite mortar prepared by the invention has the advantages of water resistance, crack resistance, high ductility, high cohesiveness, seepage resistance, harmful ion erosion resistance, no shrinkage, simplicity and convenience in constructionand the like; can be used for rigid waterproof and anti-cracking engineering of building outer walls and toilets, rigid waterproof and anti-cracking engineering of places such as elevator shafts, roofs and basements, and hydrological engineering such as ports and wharfs which need to be waterproof, anti-cracking and corrosion-resistant.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a high-ductility waterproof and crack-resistant composite mortar, a mixing method and a construction process thereof. Background technique [0002] Generally speaking, ordinary plastering mortar has low adhesive force, high shrinkage rate, and is extremely easy to crack, which greatly affects the impermeability and durability of the mortar, and brings inconvenience to construction. Therefore, our country was in the 60~ In the 1970s, it began to study polymer cement mortar blended with natural latex, styrene-butadiene latex, neoprene latex, and acrylic copolymer latex, and used it in exterior wall spraying, leak-proof and moisture-proof underground engineering and some special projects. Later, cellulose ethers were commonly used as admixtures for cement-based composite materials at home and abroad, which greatly reduced the amount of polymer blended and saved cost...

Claims

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Application Information

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IPC IPC(8): C04B28/02E04F13/02C04B111/20C04B111/23C04B111/27C04B111/34
CPCC04B28/02E04F13/02C04B2201/50C04B2111/20C04B2111/2015C04B2111/23C04B2111/27C04B2111/343C04B18/08C04B18/12C04B14/28C04B18/146C04B2103/0057C04B2103/65C04B24/383C04B24/281C04B24/2623C04B16/0641C04B2103/0068
Inventor 田婷邓明科卜新星
Owner 西安五和新材料科技集团股份有限公司
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