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Crushed stone seal layer maintenance material for mountain road and construction method of crushed stone seal layer maintenance material

A kind of gravel sealing layer, highway technology, applied in the direction of roads, roads, coagulation pavement paved on site, etc., can solve the problem of difficult to improve pavement performance and maintenance quality, pavement anti-skid coefficient and wear resistance attenuation, pavement structure and construction The method is not applicable, etc., to achieve high-value reuse, delay the reduction of wear coefficient and anti-skid performance, and improve the effects of insufficient lighting and poor sight.

Active Publication Date: 2022-04-05
山西黄河前沿新材料研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used emulsified asphalt-type crushed stone seal has the following problems in the maintenance of mountain roads. First, the bond between the crushed stone seal and the road surface is poor, and it is prone to crowding and cracks on the ramp due to the impact of vehicle braking. Reduce driving comfort; second, poor adhesion between cementitious materials and stone materials, stones are easy to loosen and fall off under frequent driving, and the anti-skid coefficient and wear resistance of the road surface decay rapidly, seriously affecting driving safety; third, the pavement structure and construction methods are not applicable , resulting in the cost of a lot of maintenance funds, but it is difficult to improve the pavement performance and maintenance quality

Method used

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  • Crushed stone seal layer maintenance material for mountain road and construction method of crushed stone seal layer maintenance material
  • Crushed stone seal layer maintenance material for mountain road and construction method of crushed stone seal layer maintenance material
  • Crushed stone seal layer maintenance material for mountain road and construction method of crushed stone seal layer maintenance material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] The composition of the viscous oil used in this embodiment is:

[0087] 20% non-ionic water-based epoxy emulsion with emulsifier content 2.4kg

[0088] Cationic SBS modified emulsified asphalt 25.0kg

[0089] Polyamide 651 curing agent 0.8kg

[0090] Wherein, the preparation method of the nonionic water-based epoxy emulsion of 20% emulsifier dosage is as follows:

[0091] (1) Weigh 15.0kg of epoxy resin F51 and 120.0kg of polyethylene glycol PEG-4000 into the reaction kettle, set the temperature at 70°C, heat and stir until the polyethylene glycol PEG-4000 is completely dissolved, and keep the temperature constant After 2 hours of reaction, a mixture of epoxy resin F51 and PEG-4000 was obtained. Dissolve 0.5kg of potassium persulfate in 2.5kg of water to obtain an aqueous solution of potassium persulfate, slowly add the aqueous solution of potassium persulfate to the mixture of epoxy resin F51 and PEG-4000, and finish the dropwise addition within 0.5h, then evenly S...

Embodiment 2

[0104] The composition of the sticky layer oil used in this embodiment is:

[0105] 18% non-ionic water-based epoxy emulsion with emulsifier content 2.4kg

[0106] Cationic SBS modified emulsified asphalt 19.0kg

[0107] Diethylenetriamine curing agent 0.8kg

[0108] Wherein, the preparation method of the nonionic water-based epoxy emulsion of 18% emulsifier dosage is as follows:

[0109] The nonionic emulsifier was prepared according to the method in Example 1. Weigh 0.98kg of epoxy resin E51 and 0.22kg of non-ionic emulsifier into the reaction kettle, mix at 70°C for 30 minutes at high speed, then slowly add distilled water to the system until the viscosity of the system drops suddenly to form a stable water lotion. Continue to add water to dilute until the total amount of water added is 1.2kg to obtain a nonionic water-based epoxy emulsion with 18% emulsifier content, and its solid content is 50%.

[0110] The composition of the cement used in this embodiment is:

[0...

Embodiment 3

[0118] The composition of the sticky layer oil used in this embodiment is:

[0119] 20% non-ionic water-based epoxy emulsion with emulsifier content 2.0kg

[0120] Cationic SBS modified emulsified asphalt 23kg

[0121] Diethylenetriamine curing agent 0.6kg

[0122] Wherein, the method for preparing the nonionic water-based epoxy emulsion of 20% emulsifier dosage is the same as that in Example 1.

[0123] The composition of the cement used in this example is:

[0124] Cationic water-based epoxy emulsion with 16% emulsifier content 14.0kg

[0125] Cationic SBS modified emulsified asphalt 95.0kg

[0126] Modified phenalkamine T30 curing agent 4.3kg

[0127] Wherein, the cationic water-based epoxy emulsion preparation method of 16% emulsifier dosage is as follows:

[0128] The cationic emulsifier was prepared according to the method in Example 1. 0.90 kg of cationic emulsifier and 0.22 kg of nonionic emulsifier were sheared at high speed for 15 minutes at room temperature t...

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Abstract

The invention relates to the field of road maintenance, in particular to a mountain road gravel seal layer maintenance material and a construction method, and the gravel seal layer material is prepared from the following raw materials in parts by weight: 1-15 parts of tack coat oil, 1-10 parts of cement, 10-40 parts of cementing material, 40-100 parts of stone and 50-100 parts of cullet. Both the tack coat oil and the cementing material are waterborne epoxy modified emulsified asphalt, so that not only is good pavement performance achieved, but also beneficial bonding performance can be provided. The invention further discloses a rubble seal method for the mountainous road, the improved sandwich rubble seal structure is adopted for paving, the flowing trend of the cementing material can be effectively weakened, and the phenomenon of oil flooding of the road surface is avoided. Bonding power and durability of a traditional gravel sealing layer can be greatly improved, light reflecting capacity is given to a road surface by adding cullet, and the road surface anti-skid coefficient and driving safety of mountainous highways, especially curves and ramps are effectively improved.

Description

technical field [0001] The invention relates to the field of highway maintenance, in particular to a maintenance material and a construction method for a gravel seal layer of a road in mountainous areas. Background technique [0002] In recent years, China's road construction has developed rapidly, and mountainous roads connecting rural areas and cities have been continuously built, becoming an important part of my country's transportation road network. However, the use effect of mountainous roads is relatively poor, early damage occurs early, ruts, cracks and other diseases occur frequently, and road performance decreases rapidly; vehicles are prone to skids and collisions when driving on slopes and curves; insufficient lighting at night, Driving vision is extremely poor, resulting in frequent traffic accidents, which are all caused by the lack of reasonable and applicable preventive maintenance on the road surface. [0003] Due to its simplicity, high efficiency and low c...

Claims

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Application Information

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IPC IPC(8): C04B28/04E01C7/35
CPCY02A30/60
Inventor 赵璇张影陈帅刘力源刘哲张恒基贾雪梅石丹丽王郭勇徐丽飞王建业
Owner 山西黄河前沿新材料研究院有限公司
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