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Preparation method and application of composite modified cement repairing material

A technology of compound modification and repair material, which is applied in the field of preparation of compound modified cement repair material, can solve problems such as affecting traffic flow and long open traffic time, and achieves delaying diffusion and spreading, short curing time, and improving diffusion and spreading. Effect

Inactive Publication Date: 2020-04-17
CHINA HIGHWAY ENG CONSULTING GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, the open traffic time is longer
At present, the cement repair materials used in construction need a long time for maintenance, and the traffic control measures set up during the period will seriously affect the traffic flow

Method used

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  • Preparation method and application of composite modified cement repairing material
  • Preparation method and application of composite modified cement repairing material
  • Preparation method and application of composite modified cement repairing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Take out the 4.75mm fine aggregate with a standard sieve, dry it in an oven at 80°C and set it aside;

[0040] (2) Ratio of materials: Weigh 93 parts of 42.5-grade rapid-hardening sulfoaluminate cement, 0.1 part of polypropylene fiber, 5.5 parts of silica fume, 0.4 part of vinyl acetate dispersible latex powder, and FDN-C naphthalene-based high-efficiency water-reducing 0.9 parts of polysiloxane antifoaming agent, 0.1 part of polysiloxane defoamer, mix and stir evenly, 500 revolutions per minute, stirring time is 10 minutes, and the polymer cement mixture can be obtained;

[0041] (3) Take by weighing 12kg of polymer cement mixture, add 13kg of fine aggregate therein, mix and stir evenly, 500 revolutions per minute, stirring time is 10 minutes, can obtain mortar 25kg;

[0042] (4) Add 1.6 kg of water to the mortar, mix and stir evenly, 1000 revolutions per minute, and stir for 5 minutes to obtain a composite modified cement quick repair material.

Embodiment 2

[0044] Adopt the method of embodiment 1, the difference is that, the formula of polymer cement mixture is 93.3 parts of 42.5 grade quick-hardening sulfoaluminate cements, 0.07 parts of polypropylene fiber, 5.5 parts of silica fume, 0.4 parts of vinyl acetate dispersible latex powder parts, 0.9 parts of FDN-C naphthalene-based high-efficiency water reducer, and 0.1 parts of polysiloxane defoamer.

Embodiment 3

[0046]Adopt the method of embodiment 1, the difference is that, the formula of polymer cement mixture is 92.5 parts of 42.5 grade quick-hardening sulfoaluminate cements, 0.13 parts of polypropylene fiber, 5.7 parts of silica fume, 0.4 parts of vinyl acetate dispersible latex powder parts, 0.9 parts of FDN-C naphthalene-based high-efficiency water reducer, and 0.1 parts of polysiloxane defoamer.

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Abstract

The invention relates to a preparation method and an application of a composite modified cement repairing material. The composite modified cement repairing agent is composed of a polymer cement mortarpremix and water, the polymer cement mortar premix is prepared from a polymer cement mixture and fine aggregate, and the polymer cement mixture is prepared from, by weight, 90-95 parts of cement, 0.05-0.15 part of fibers, 4-8 parts of silica fume and 0.2-0.6 part of dispersible latex powder. The composite modified cement rapid repairing material provided by the invention can be used for rapidly repairing surface layer diseases such as honeycombs, pitted surfaces, dusting, peeling, freeze thawing, bone exposure and micro-cracks of cement concrete pavements of highways, toll stations, airports,bridges and the like, the repairing thickness is about 3-10mm, and the repairing material has the advantages of good adaptability, excellent construction performances, high bonding strength with original cement pavements, good durability, and rapidness in traffic opening.

Description

technical field [0001] The invention relates to the technical field of highway maintenance; in particular, it relates to a preparation method and application of a composite modified cement restoration material. Background technique [0002] Cement concrete pavement is widely used in various grades of highways in my country because of its advantages of good stability, high strength, low maintenance cost and long service life. A large number of cement concrete roads are under traffic load and natural environment, such as overweight, rain erosion, salt erosion, freeze-thaw cycle, etc., the cement concrete pavement disease, especially the concrete surface disease, is becoming more and more serious. If it is left untreated and allowed to develop freely, it will gradually cause deep structural diseases such as subsidence, cracking, arching and hollowing out of the cement pavement, which will cause the entire pavement to be resurfaced due to the deterioration of its performance, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/20C04B111/72
CPCC04B28/06C04B2111/0075C04B2111/20C04B2111/72C04B2201/05C04B2201/10C04B2201/50C04B16/0633C04B18/146C04B24/2623C04B24/42C04B2103/302C04B14/02
Inventor 侯芸董元帅樊云龙张艳红何建彬田佳磊马向楠周晶
Owner CHINA HIGHWAY ENG CONSULTING GRP CO LTD
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