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A preparation method and application of road repair mortar dry powder

A technology of mortar dry powder and road repair, which is applied to roads, roads, on-site coagulation pavements, etc., can solve the problems of long cement concrete pavement repair period, secondary cracking of the road surface, and inconvenient construction, etc., and achieve excellent mechanical properties, High durability and good construction performance

Active Publication Date: 2019-08-02
临沂博泰控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problems of long cement concrete pavement repair period, inconvenient construction, easy secondary cracking of pavement after repair, etc.

Method used

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  • A preparation method and application of road repair mortar dry powder
  • A preparation method and application of road repair mortar dry powder
  • A preparation method and application of road repair mortar dry powder

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific embodiment one: a kind of preparation method of road repair mortar dry powder comprises the following steps:

[0032] Step 1: mixing sulfoaluminate cement and 42.5 grade ordinary Portland cement and stirring evenly to obtain mixed cement;

[0033] Step 2: adding four kinds of mineral admixtures to the cement mixed in step 1 and stirring evenly to obtain a composite cementitious material; the four kinds of mineral admixtures are silica fume, fly ash, mineral powder and quicklime;

[0034] Step 3: Add a composite admixture to the composite gelling material obtained in step 2 and stir evenly to obtain a composite gelling material after adding the composite admixture; the admixture is that the composite admixture is lithium carbonate, high-efficiency water-reducing agent, boric acid, tartaric acid, methylcellulose, sodium metaphosphate;

[0035] Step 4: After mixing the quartz sand with three particle sizes evenly, add polypropylene fiber and continue to stir unti...

specific Embodiment approach 2

[0037] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mixing ratio of sulphoaluminate cement and Portland cement in step 1 is: the mass ratio is 3:2.

[0038] Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0039] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: in the step two, the ratio of adding four kinds of mineral admixtures to the cement mixed in step one is specifically: after mixing according to step one 4%, 6%, 5% and 5% of the total mass of cement are sequentially added with silica fume, fly ash, mineral powder and quicklime.

[0040] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a preparation method and an application of a pavement patching dry mortar powder, and aims at solving the problems that the patching duration of a cement concrete pavement is long, the construction is inconvenient, and secondary cracking of the pavement is caused easily after patching. The preparation method comprises the following steps: 1, mixing and evenly stirring sulphate aluminum cement and Portland cement to obtain a mixed cement; 2, obtaining a composite binding material; 3, obtaining the composite binding material with an added composite additive; 4, obtaining quartz sand with added polypropylene fiber; 5, obtaining the dry mortar powder comprising the even various components; cutting and separating the pavement in a to-be-patched region, chiseling to remove the concrete pavement in the to-be-patched region, and sweeping away the broken concrete; calculating the use amount of the dry mortar powder and the purified water, fully stirring the dry mortar powder and the purified water to obtain the patching mortar; and using the patching mortar to patch the pavement in the to-be-patched region. The preparation method is applied to the field of civil engineering.

Description

technical field [0001] The invention relates to a preparation method and application of road repair mortar dry powder. Background technique [0002] As a high-grade pavement, cement concrete pavement is widely used in urban roads, highways and airport runways. It has the advantages of high rigidity, strong bearing capacity, good stability and high durability. According to the specification JTG D40-2011, the design life of cement concrete pavement is 20 to 30 years. However, with the rapid development of the national economy, people have higher and higher requirements for infrastructure. Higher requirements are put forward, and the phenomenon of heavy load and overload occurs frequently, which accelerates the damage of cement concrete pavement and seriously affects the normal service life of cement concrete pavement. For airport runway repair and municipal road emergency repair projects, a feature must be highlighted: "fast", which requires that the road repair construction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06E01C7/14
CPCC04B28/06C04B2111/0075C04B2201/50E01C7/142E01C7/147C04B14/062C04B18/08C04B18/12C04B22/064C04B22/10C04B22/082C04B24/04C04B24/383C04B22/16C04B14/06C04B16/0633
Inventor 袁杰王耀增蔡小平杨文萃宋承哲何巍巍
Owner 临沂博泰控股有限公司