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Mixed material and method for filling asphalt pavement after core drilling and sampling

A technology of asphalt pavement and core drilling, which is applied in the direction of roads, roads, road repairs, etc., can solve problems such as improper filling of potholes, achieve good waterproof effect, improve cohesion, and meet the requirements of structural bearing capacity

Inactive Publication Date: 2019-05-10
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of asphalt pavement filling mixed material and method after core drilling, which solves the defect of improper filling of holes in existing hole filling methods after core drilling

Method used

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  • Mixed material and method for filling asphalt pavement after core drilling and sampling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Weigh 90kg of MS-4 mineral material, 12kg of SBS modified emulsified asphalt, 3kg of expansion agent, 6kg of filler, and 1kg of water for mixing to make asphalt micro-surfacing.

[0050] 2. Weigh 100kg of emulsified asphalt, 20.2kg of water-based epoxy resin, 40.4kg of curing agent, 20.2kg of ordinary portland cement, 55.6kg of fast hardening sulfoaluminate cement, 74.74kg of quartz sand, 4kg of water reducing agent, 2kg of slow Coagulant, 1.2kg early-strength agent, 1.4kg defoamer for mixing, configured into cold-patch asphalt mortar.

[0051] 3. Weigh 250kg of dry powder, the river sand gradation is discontinuous gradation, and the particle size is 1.18mm;

[0052] 4. Clean up the potholes that need to be repaired, spray emulsified asphalt on the bottom of the pothole and its surroundings, and set up asphalt micro-surface, cold-patch asphalt mortar and dry powder layer on the bottom of the pothole, and adjust the thickness of each layer according to the thickness o...

Embodiment 2

[0054] 1. Weigh 180kg of MS-4 mineral material, 24kg of SBS modified emulsified asphalt, 6kg of expansion agent, 12kg of filler, and 1.8kg of water for mixing to make asphalt micro-surfacing.

[0055] 2. Weigh 200kg of emulsified asphalt, 42kg of water-based epoxy resin, 80kg of curing agent, 31.6kg of ordinary Portland cement, 94.6kg of fast-hardening sulfoaluminate cement, 147kg of quartz sand, 7.4kg of water-reducing agent, and 3kg of retarder , 1.6kg early-strength agent, 2.6kg defoamer for mixing, configured as cold-patch asphalt mortar.

[0056] 3. Weigh 250kg of dry powder, the river sand gradation is discontinuous gradation, and the particle size is 1.18mm;

[0057] 4. Clean up the potholes that need to be repaired, spray emulsified asphalt on the bottom of the pothole and its surroundings, and set up asphalt micro-surface, cold-patch asphalt mortar and dry powder layer on the bottom of the pothole, and adjust the thickness of each layer according to the thickness of t...

Embodiment 3

[0059] 1. Weigh 45kg of MS-4 mineral material, 6kg of SBS modified emulsified asphalt, 1.5kg of expansion agent, 3kg of filler, and 0.4kg of water for mixing to make asphalt micro-surfacing.

[0060] 2. Weigh 50kg of emulsified asphalt, 11.1kg of water-based epoxy resin, 19.9kg of curing agent, 5.5kg of ordinary portland cement, 19.3kg of rapid hardening sulfoaluminate cement, 36.4kg of quartz sand, 1.6kg of water reducing agent, 0.45 kg retarder, 0.2kg early-strength agent, 0.6kg defoamer for mixing, configured as cold patch asphalt mortar.

[0061] 3. Weigh 250kg of dry powder, the river sand gradation is discontinuous gradation, and the particle size is 1.18mm;

[0062] 4. Clean up the potholes that need to be repaired, spray emulsified asphalt on the bottom of the pothole and its surroundings, and set up asphalt micro-surface, cold-patch asphalt mortar and dry powder layer on the bottom of the pothole, and adjust the thickness of each layer according to the thickness of th...

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Abstract

The invention provides a mixed material and a method for filling an asphalt pavement after core drilling and sampling. Bottom asphalt micro-surfacing is provided with an expanding agent, expanding components of the expanding agent generate a lot of expansive crystalline hydrates after water absorption, the micro-surfacing generates moderate expansion, a hole after core drilling is provided with aregular cylinder, and the micro-surfacing is closely fitted with the side wall and the bottom of the hole through expansion of the micro-surfacing. The upper portion of a structure is provided with cold-repair asphalt mortar, so that the cold-repair asphalt mortar and lower graded asphalt micro-surfacing can be effectively bonded, the cold-repair asphalt mortar serves as a surface material, and excellent flatness, structural compactness and strength requirement can be achieved. The structure and an original pavement can be effectively bounded, and possible diseases of a later asphalt pavementare greatly prevented. The scheme is simple and convenient, holes in the asphalt pavement can be rapidly filled, uniform compactness of the holes are is ensured, road quality and driving safety and comfort are improved, secondary damage cannot easily generated, cold construction is implemented in a whole process, energy consumption is reduced, and environmental pollution is low.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and specifically designs a filling mixed material and a method for asphalt pavement core sampling. Background technique [0002] Asphalt pavement has been widely used in urban roads and main highways because of its advantages such as good flatness, low noise, and easy maintenance, and has become a high-grade pavement with the largest paved area in China. At this stage, no matter for new roads or maintenance projects, in the construction process of asphalt concrete pavement, the control of compaction degree is a very important indicator. Asphalt concrete formed by standard compaction with hot-stirred asphalt mixture has comprehensive properties of structural mechanics. Proper compaction can enhance the impermeability of pavement materials, improve the strength and stability of materials, and reduce the deformation under the bearing capacity of pavement. The guarantee of compaction can n...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B28/06E01C23/09
Inventor 马峰代佳胜傅珍宋瑞萌王蒙蒙董文豪常晓绒李晨
Owner CHANGAN UNIV
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