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Modified cement mortar pavement patching material and pavement patching construction method

A pavement repair and cement mortar technology, applied in the field of pavement repair materials and civil engineering materials, can solve the problems of unsatisfactory cohesion and strength, long curing time, large water demand, etc. The effect of good workability and easy construction and operation

Inactive Publication Date: 2015-05-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether the concrete pavement cracks can be repaired successfully depends on the performance of the repairing materials in addition to the guarantee of good construction technology. The existing ordinary pavement repairing materials require a lot of water, take a long time to cure, the adhesion and strength are not ideal, and the cost is high.

Method used

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  • Modified cement mortar pavement patching material and pavement patching construction method
  • Modified cement mortar pavement patching material and pavement patching construction method
  • Modified cement mortar pavement patching material and pavement patching construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this example, see Figure 1 ~ Figure 3 , for the construction method of repairing the severely pockmarked surface and the surface layer falling off, the construction process and conditions are as follows:

[0051] 1. Construction temperature: the construction environment temperature should not be too low, preferably 15-35°C;

[0052] 2. Preparation:

[0053] ①Clean the road surface: first clean the surface of the part to be repaired, remove dust and sundries, and remove the loose parts;

[0054] ②Surface pretreatment: After mixing component A, component B and water in a ratio of 1:1:1~1.5 (mass ratio), paint a layer on the cleaned surface, and the surface to be painted is composed of After the milky white becomes transparent, the repair work can be started;

[0055] ③Mixture preparation method: first mix the weighed components A, B and water evenly, then add the well-mixed cement and aggregates and mix well.

[0056] 3. Specific treatment measures:

[0057] The ...

Embodiment 2

[0072] This embodiment is basically the same as Embodiment 1, especially in that:

[0073] In the present embodiment, for the pavement repairing construction method of the processing of slightly pockmarked surface and newly repaired pavement microcracks, the construction process and conditions are:

[0074] 1. Construction temperature: this construction condition is identical with embodiment one;

[0075] 2. Preparatory work: this step is the same as in Example 1;

[0076] 3. Specific treatment measures:

[0077] The reference ratio of each component of the mixture of road repair materials is: 50kg of ordinary Portland cement 42.5, 90kg of sand, 12.5kg of A component, 12.5kg of B component and 9-12kg of water;

[0078] Treatment thickness: 3~5mm;

[0079] On-site construction method: Pour the mixture on the surface of the pretreated road surface, scrape it with a scraper, and then complete the road surface repair;

[0080] Pavement curing and strengthening time after repai...

Embodiment 3

[0082] This embodiment is basically the same as Embodiment 1, especially in that:

[0083] In this embodiment, for the pavement repairing construction method of the repairing of potholes, corner damage and bridge head expansion joint concrete, the construction process and conditions are:

[0084] 1. Construction temperature: this construction condition is identical with embodiment one;

[0085] 2. Preparatory work: this step is the same as in Example 1;

[0086] 3. Specific treatment measures:

[0087] The reference ratio of each component of the mixture of road repair materials is: 50kg of ordinary portland cement 42.5, 55kg of sand, 105kg of gravel, 12.5kg of A component, 12.5kg of B component and 0~7.5kg of water;

[0088] Processing thickness: greater than 30mm;

[0089] On-site construction method: pour the mixture on the pretreated pavement surface, smooth it with a trowel, and complete the pavement repair;

[0090] Pavement curing and strengthening time after repai...

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Abstract

The invention discloses a modified cement mortar pavement patching material and a pavement patching construction method. The modified cement mortar pavement patching material is prepared by uniformly mixing the following components: silicate cement, sand, macadam, a component A, a component B and water, wherein the macadam is an optional component material or a default component material; the component A is epoxy resin; the component B is an epoxy resin curing agent. The modified cement mortar pavement patching material is applied to the patching construction of microcracks, pitted surfaces and pits in a cement concrete pavement; the early compression strength, the breaking strength and the bonding strength of the modified cement mortar pavement patching material are higher than the early compression strength, the breaking strength and the bonding strength of normal cement mortar; the modified cement mortar pavement patching material is beneficial for the rapid patching of damaged concrete pavements, good in patching quality and low in cost.

Description

technical field [0001] The invention relates to a civil engineering material, in particular to a pavement repair material, which is applied in the technical field of road engineering and used for repairing microcracks, pockmarks and potholes on cement concrete pavement. Background technique [0002] As far as the overall construction status of my country's cement concrete pavement is concerned, there are disadvantages of low design strength, thin panels, and poor construction quality. In addition, maintenance is not timely, resulting in damage to the concrete pavement that can be seen everywhere after a period of use, and it is becoming more and more serious. From the damage survey of cement concrete pavement in a certain place in southern my country, we can see that cracks account for a large proportion of pavement diseases. A certain expressway opened to traffic in May 1997 has only 138km of mileage after 5 years of use, and cracks are more serious. There are 871 boards. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B14/02C04B24/28E01C7/35
Inventor 彭妙娟程效民张东平
Owner SHANGHAI UNIV
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