A kind of asphalt road laying method

A paving method and road technology, applied to roads, roads, on-site coagulation pavements, etc., can solve problems such as difficulty in ensuring construction quality, inability to guarantee rolling construction, insufficient local compaction, etc., and achieve the goal of not melting easily Effects of flow, good thermal storage stability, good resistance to rutting and pyrolysis

Active Publication Date: 2019-01-15
广东粤路勘察设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional rolling process is a single steel wheel roller and a rubber wheel roller rolling separately. The consequences of this are that the rolling time is too long and the temperature drops too much. Serious segregation, low flatness, insufficient local compaction, it is difficult to guarantee the construction quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for laying asphalt roads, comprising the steps of:

[0035] Step 1. Surveying and alignment, including re-measurement of conductors, centerlines, benchmarking points, cross-section inspection and re-measurement. Before the start of construction, carry out construction lofting, and release the subgrade edge, groove, slope toe, side ditch protection slope, borrowing field, etc. The location shall be marked with its outline, and the trees, weeds, shrubs, etc. within the scope of the route land shall be cleared, and the roadbed shall be dug;

[0036]Step 2: fill the subgrade in horizontal layers, divide it into horizontal layers according to the full width of the cross section, and fill it up layer by layer. The first layer is filled with mixed slag with a thickness of 30cm, and the second layer is filled with gravel , the thickness of the filling is 20cm, the third layer is filled with mixed slag, and the thickness of the filling is 8cm; after the filling is compl...

Embodiment 2

[0041] The asphalt mixture consists of 78 parts by mass of modified asphalt, 51 parts of gravel, 24 parts of styrene-butadiene-styrene triblock copolymer, 20 parts of polylactic acid-butylene succinate-polylactic acid triblock Segment copolymer, 8 parts of potassium formate and 11 parts of lignin fibers, the structural formula of the polylactic acid-butylene succinate-polylactic acid triblock copolymer is . Wherein, the particle size of the crushed stone in the mixture is not greater than 3cm, and the total amount of the particle size less than 0.075mm does not exceed 7% of the total amount, the crushed stone does not contain impurities, and the crushed stone has a strength of not less than 15MP . The modified asphalt is composed of 50 parts by mass of liquefaction residue, 25 parts of crosslinking agent and 82 parts of base asphalt, and the crosslinking agent is benzaldehyde.

Embodiment 3

[0043] The surface of the solar photovoltaic module is covered with a photosensitive wear-resistant layer. The photosensitive wear-resistant layer is composed of 37 parts by mass of toluidine blue-carboxymethyl chitosan-carbon nanotube film, 13 parts of aluminum oxide and 17 parts of polyethylene. The thickness of the wear-resistant layer is 0.2 mm.

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Abstract

The invention discloses an asphalt road paving method, and belongs to the field of road paving methods. The asphalt road paving method disclosed by the invention comprises five steps: a first step of performing measurement and alignment, comprising the steps of re-measuring a guiding line, a center line and a benchmark, performing cross section inspection and supplementary measurement, performing staking out in construction before the start of the construction, staking out specific locations such as the edges of a roadbed, slope openings, slope toes, side ditch berms and soil pits, indicating contours of the specific locations, clearing away trees, weeds, shrubs and the like in the range of a route land, and digging the roadbed; and other four steps. The asphalt road paving method disclosed by the invention has the characteristics of being high in flatness, free from situations such as insufficient local degree of compaction and serious temperature segregation, good in road surface temperature sensing performance, good in elasticity and aging resistance, not easy to melt and flow at high temperature, and good in toughness and not easy to break at low temperature, the use requirements of high-level roads can be met, and besides, the high temperature of a road surface can be fully utilized for solar power generation.

Description

technical field [0001] The invention relates to a paving method, in particular to a paving method for asphalt roads. Background technique [0002] Asphalt pavement has become the main form of high-grade highways in China because of its superior performance and driving advantages. However, ordinary road asphalt has poor temperature sensitivity, poor elasticity and aging resistance due to its own composition and structure. Flowing, easy to break at low temperature, difficult to meet the use requirements of high-grade roads. At the same time, during the rolling construction of the existing expressway asphalt pavement, the initial pressure is generally static pressure with a small-tonnage steel wheel roller. The wheel roller closes the surface and completes the final pressure. The traditional rolling process is a single steel wheel roller and a rubber wheel roller rolling separately. The consequences of this are that the rolling time is too long and the temperature drop is too...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/18E01C3/04C04B26/28
CPCC04B26/285E01C3/04E01C7/18C04B24/36C04B14/02C04B24/2676C04B24/285C04B24/04Y02A30/60
Inventor 肖勇
Owner 广东粤路勘察设计有限公司
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