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Municipal roads and their construction methods

A technology of municipal roads and construction methods, which is applied to roads, roads, building components, etc., and can solve problems such as affecting traffic operation, large material voids, and easy cracks and potholes on the road surface

Active Publication Date: 2020-10-23
四川先舟建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, during the construction of municipal roads, it is paved with cushion, base and surface layers. Due to the large internal void ratio and large water seepage coefficient between the layers, uneven settlement occurs after the municipal roads are put into operation. After opening to traffic Cracks and potholes are prone to appear on the road surface, affecting traffic operation

Method used

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  • Municipal roads and their construction methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, the construction method of municipal road, comprises the following steps:

[0043] Step S1: Positioning and setting out, determining the centerline of the road

[0044] Determine the centerline of the road according to the road conditions, and lay out the centerline control piles. The road centerline is composed of straight lines and curves. The straight line section control piles are arranged every 20 meters. Stakes need to be added at the pile number, and one pile is laid every 8 meters at the curve.

[0045] Step S2: Excavating roadbed trenches

[0046] Investigate the geological conditions of the project section, excavate the subgrade trenches according to the geological conditions, clean up the turf soil, tree roots, plants, etc. within the construction scope, excavate the road area and the soft soil layer under its influence, and clear the construction road section Excavate the 30cm thick humus soil layer in the road area, dispose of the waste bric...

Embodiment 2

[0066] Embodiment 2, the construction method of municipal road, its difference with embodiment 1 is:

[0067] Step S5: laying cement stabilization layer

[0068] The cement stabilization layer is made by uniformly mixing 45Kg of cement, 250Kg of lime, 350Kg of crushed stone, 30Kg of sand and 45Kg of water, and the particle size of the crushed stone is <20mm.

[0069] The paving mixture is used, the paving thickness is 19cm, and the rolling forming thickness is 15cm. A 15-ton vibratory roller is used to carry out static pressure four times at a speed of 1.8km / h, and then lightly shake twice with the vibratory roller. Finally, heavy Shock and crush twice.

[0070] Step S6: Spread emulsified asphalt

[0071] Remove dust, floating soil, loose layer and other sundries on the cement stable layer, repair and level off the local unevenness of the cement stable layer, and then spread modified asphalt 55Kg, water 38Kg, alkylphenol polymer on the upper surface of the cement stable laye...

Embodiment 3

[0077] Embodiment 3, the construction method of municipal road, its difference with embodiment 1 or 2 is:

[0078] Step S5: laying cement stabilization layer

[0079] The cement stabilization layer is made by uniformly mixing 50Kg of cement, 300Kg of lime, 400Kg of crushed stone, 40Kg of sand and 50Kg of water, and the particle size of the crushed stone is <20mm.

[0080] The paving mixture is used, the paving thickness is 19cm, and the rolling forming thickness is 15cm. A 15-ton vibratory roller is used to carry out static pressure four times at a speed of 1.8km / h, and then lightly shake twice with the vibratory roller. Finally, heavy Shock and crush twice.

[0081] Step S6: Spread emulsified asphalt

[0082] Remove dust, floating soil, loose layer and other sundries on the cement stable layer, repair and level off the local unevenness of the cement stable layer, and then spread modified asphalt 60Kg, water 40Kg, alkylphenol polymer on the surface of the cement stable layer ...

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Abstract

The invention discloses a construction method for a municipal road, and belongs to the field of the road engineering. A technical scheme is that the construction method comprises the following steps:positioning and paying off, excavating a roadbed groove, backfilling the roadbed groove, paving and bedding, laying a cement stabilization layer, spraying emulsified asphalt, laying a modified asphaltconcrete pavement, processing a construction joint, and maintaining the road. The invention further provides the municipal road obtained by the above construction method. The provided municipal roadhas the advantages of small interspaces between various layers, uniform sedimentation, and less generated cracks.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a municipal road and a construction method thereof. Background technique [0002] Municipal engineering refers to the construction of municipal facilities. In my country, municipal facilities refer to various buildings, structures, equipment, etc. that are set up within the planning and construction scope of urban areas, towns (townships), and provide residents with paid or unpaid public products and services based on government responsibilities and obligations. The construction of various public infrastructure supporting urban life belongs to the category of municipal engineering, such as common urban roads, bridges, subways, etc. [0003] With the rapid development of my country's national economy, the country's investment in infrastructure construction is also increasing. The development of highway construction is an important way to promote the integration of urban and rural ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00E01C3/00E01C7/35E01C7/32E01C11/02
CPCE01C3/00E01C7/32E01C7/35E01C11/02Y02A30/60
Inventor 魏龙李建军魏强欧高翔
Owner 四川先舟建设工程有限公司
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