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Low-temperature shrinkage self-leveling anti-segregation emergent road repairing material and preparation method thereof

A self-leveling, anti-segregation technology, applied in the field of road and bridge engineering, can solve problems such as damage, material segregation, poor repair quality, etc., and achieve the effect of high repair rate.

Pending Publication Date: 2018-06-01
BEIJING SHOUFA HIGHWAY MAINTENANCE & CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the temperature shrinkage of the repair material, the uneven filling of the repair material caused by the irregular repair part, and the segregation of the uneven material on site, the quality of the repair is very poor, and it is easy to damage the part again, resulting in repair. Very high rate

Method used

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  • Low-temperature shrinkage self-leveling anti-segregation emergent road repairing material and preparation method thereof
  • Low-temperature shrinkage self-leveling anti-segregation emergent road repairing material and preparation method thereof

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preparation example Construction

[0052] Another embodiment of the present invention proposes a method for preparing a low-temperature shrinkage self-leveling anti-segregation road repair material, which includes:

[0053] 1) Stir the composite gelling material, hydration heat inhibitor, chemical water reducer, physical water reducer, anti-segregation agent, fiber and sand at high speed to obtain self-leveling mortar;

[0054] 2) The self-leveling mortar described above is mixed with the coagulation-adjusting component and stones to obtain a low-shrinkage self-leveling anti-segregation road repair material.

[0055] The preferred high-speed stirring rate is greater than 2000 revolutions / min.

Embodiment 1

[0057] One embodiment of the present invention proposes a low-temperature shrinkage self-leveling anti-segregation road repair material, which includes:

[0058] Composite cementitious material: 50%;

[0059] Heat of Hydration Inhibitor: 2%;

[0060] Chemical water reducer: 0.3%;

[0061] Physical water reducer: 5%;

[0062] Anti-segregation agent: 1.5%, which is water-absorbing resin, cellulose ether and bentonite;

[0063] Adjusting component: 0.2%, fructose and lithium salt

[0064] Steel fiber: 1%, the tensile strength is 2100MPa;

[0065] Quartz sand: 20%, graded quartz sand with a mesh number of 6-200;

[0066] Stones: 20%, are washed stones.

[0067] Among them, the composite cementitious material includes 40% of ordinary Portland cement clinker, 5% of sulphoaluminate cement clinker, and 5% of dihydrate gypsum.

[0068]Another embodiment of the present invention proposes a method for preparing a low-temperature shrinkage self-leveling anti-segregation road repair...

Embodiment 2

[0076] One embodiment of the present invention proposes a low-temperature shrinkage self-leveling anti-segregation road repair material, which includes:

[0077] Composite cementitious material: 30%;

[0078] Hydration heat inhibitor: 1%;

[0079] Chemical water reducer: 0.1%;

[0080] Physical water reducer: 2%;

[0081] Anti-segregation agent: 1%, which is water-absorbing resin, cellulose ether and bentonite;

[0082] Coagulation regulator component: 0.1%, boric acid and lithium salt;

[0083] Steel fiber: 2%, the tensile strength is 2100MPa;

[0084] Sand: 35%, the mesh number is 6-200;

[0085] Stones: 28.8%, are washed stones.

[0086] Among them, the composite cementitious material includes 20% of ordinary Portland cement clinker, 5% of sulphoaluminate cement clinker, and 5% of dihydrate gypsum.

[0087] Another embodiment of the present invention proposes a method for preparing a low-temperature shrinkage self-leveling anti-segregation road repair material, which...

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Abstract

The invention relates to a low-temperature shrinkage self-leveling anti-segregation emergent road repairing material and a preparation method thereof. The low-temperature shrinkage self-leveling anti-segregation emergent road repairing material comprises the following components: 30-50% of a composite cementing material, 1-2% of a hydration heat inhibitor, 0.1-0.3% of a chemical water reducer, 2-5% of a physical water reducer, 1-2% of an anti-segregation agent, 0.1-0.2% of a coagulation regulating component, 1-2% of fiber, 20-35% of sand and 20-35% of stone. Through addition of functional materials such as the hydration heat inhibitor, the anti-segregation agent and the physical water reducer, in combination with a high-speed stirring and slurrying technology, the relatively low-temperature shrinkage, segregation-free and self-leveling repairing material is prepared; the low-temperature shrinkage self-leveling anti-segregation emergent road repairing material can guarantee the repairing quality of an emergently repaired construction site, has the characteristics of high durability and long service life, and solves the problem of high rerepairing rate of the conventional repairing material.

Description

technical field [0001] The invention relates to the field of road and bridge engineering, in particular to a low-temperature shrinkage self-leveling anti-segregation road repair material and a preparation method thereof. Background technique [0002] At present, with the development of my country's economy, the traffic volume is also increasing rapidly. The large traffic volume, overloading, and harsh use environment have caused damage to many roads and bridges. Most of them are local damage and need to be repaired. Due to the traffic volume Large, the stop of traffic will cause road congestion, and we can only organize emergency repair construction to restore traffic within a few hours, excluding the time lost by other processes. At this time, it is often required that the strength of emergency repair materials can reach more than 40Mpa in one hour to meet the requirements of open traffic. However, due to the temperature shrinkage of the repair material, the uneven filling o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/72
CPCC04B28/06C04B2111/72C04B2201/50C04B7/02C04B2103/0089C04B24/24C04B22/0006C04B24/383C04B22/08C04B24/10C04B22/0013C04B14/48C04B14/06C04B14/02
Inventor 贾福杰贾永奎高玉梅刘立李长成
Owner BEIJING SHOUFA HIGHWAY MAINTENANCE & CONSTR
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