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A repair material for extremely cold pavement and its preparation method and application

A repairing material and an extremely cold technology, which are applied to the field of repairing materials for extremely cold pavements and their preparation, can solve the problems that the materials cannot be used for repairing in extremely cold areas, the cement concrete adhesion is low, and the construction time is long, so as to shorten the open traffic time. , high fluidity, fast and effective repair

Active Publication Date: 2020-07-10
祎禾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has defects such as long construction time, low adhesion to the original cement concrete and easy to fall off, and the materials used are not suitable for repairs in extremely cold regions.

Method used

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  • A repair material for extremely cold pavement and its preparation method and application

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Effect test

Embodiment 1

[0018] In an embodiment of the present invention, a repairing material for extremely cold road surfaces comprises the following raw materials: 60 kg of Portland cement, 32 kg of fine sand, 11 kg of sodium gluconate, 18 kg of diethylenetriamine, and 23 kg of polyketone resin.

[0019] Mix diethylenetriamine with 3.5 times the mass of ethanol to prepare a diethylenetriamine solution for later use. Heat the polyketone resin to 65°C, heat and stir at this temperature for 30 minutes, then raise the temperature to 78°C, add diethylenetriamine solution, and heat and stir at 78°C for 0.7h to prepare a mixture. Mix Portland cement, fine sand, and sodium gluconate evenly, then add the mixture, and stir for 1.1 hours to obtain the repair material.

Embodiment 2

[0021] In an embodiment of the present invention, a repairing material for extremely cold road surfaces comprises the following raw materials: 70 kg of Portland cement, 40 kg of fine sand, 19 kg of sodium gluconate, 26 kg of diethylenetriamine, and 31 kg of polyketone resin.

[0022] Diethylenetriamine is mixed with ethanol whose mass is 4 times that of it to prepare a diethylenetriamine solution for future use. Heat the polyketone resin to 70°C, heat and stir at this temperature for 35 minutes, then raise the temperature to 78°C, add diethylenetriamine solution, and heat and stir at 78°C for 0.8h to prepare a mixture. Mix Portland cement, fine sand, and sodium gluconate evenly, then add the mixture, and stir for 1.2 hours to obtain the repair material.

Embodiment 3

[0024] In an embodiment of the present invention, a repairing material for extremely cold road surfaces comprises the following raw materials: 62kg of Portland cement, 34kg of fine sand, 13kg of sodium gluconate, 20kg of diethylenetriamine, and 25kg of polyketone resin.

[0025] Diethylenetriamine is mixed with ethanol whose mass is 4 times that of it to prepare a diethylenetriamine solution for future use. Heat the polyketone resin to 68°C, heat and stir at this temperature for 35 minutes, then raise the temperature to 78°C, add diethylenetriamine solution, and heat and stir at 78°C for 0.8h to prepare a mixture. Mix and stir Portland cement, fine sand, and sodium gluconate evenly, then add the mixture, and stir for 1.2 hours to obtain the repair material. The stirring temperature when adding the mixture is 64°C.

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Abstract

The invention discloses a repair material for an extremely cold pavement as well as a preparation method and an application of the repair material. The repair material is prepared from raw materials in parts by weight as follows: 60-70 parts of Portland cement, 32-40 parts of fine sand, 11-19 parts of sodium gluconate, 18-26 parts of diethylenetriamine and 23-31 parts of polyketone resin. Diethylenetriamine is mixed with ethanol which is 3.5-4 time the mass of diethylenetriamine, and a diethylenetriamine solution is prepared for standby application; polyketone resin is heated to 65-70 DEG C, heated and stirred for 30-35 min at the temperature and then heated to 78 DEG C, the diethylenetriamine solution is added, a mixed solution is subjected to sealed heating and stirring for 0.7-0.8 h atthe temperature of 78 DEG C, and a mixture is prepared; the Portland cement, the fine sand and sodium gluconate are mixed and stirred uniformly, the mixture is added, stirring is executed for 1.1-1.2h, and the repair material is obtained. The repair material has good low-temperature crack resistance, high-temperature stability, interface bonding property, aging resistance and anti-fatigue performance and high liquidity, the pavement can be open to traffic 0.7 h after being repaired with the repair material, and accordingly, the repair material is applicable to repair for cracks and seams of the cement concrete pavement under extremely cold weather conditions.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a repair material for extremely cold pavement and its preparation method and application. Background technique [0002] Pavement cracks, as one of the main road diseases in my country, mainly appear in the early damage of roads. If they are not treated in time, they will seriously affect the performance of roads, advance the road maintenance period and greatly increase maintenance costs, and directly shorten the service life of roads. In extremely cold regions, due to the low temperature in winter, it is generally -20 to -40°C, but the high temperature in summer can reach about 40°C. Traditional repair materials mostly use ordinary modified asphalt, ordinary joint glue, seam tape and the like. These materials have become glassy at a low temperature of -30°C. During operation, the vehicle will quickly disappear. Cracks appear, and the requirements for road maintenance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/34C04B111/72C04B111/76
CPCC04B28/04C04B2111/00293C04B2111/00482C04B2111/0075C04B2111/20C04B2111/343C04B2111/72C04B2111/76C04B2201/10C04B2201/50C04B14/06C04B24/10C04B24/121C04B24/30
Inventor 杨改
Owner 祎禾科技有限公司
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