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A method for paving full asphalt pavement of large particle size rock-filled subgrade

An asphalt pavement, large particle size technology, applied in the direction of roads, roads, pavement details, etc., can solve the problems of poor coordination ability of semi-rigid base deformation, waste of resources and funds, environmental protection pressure, uneven deformation of rock-filled roadbed, etc. The effect of good interlayer stress, improved driving safety, and excellent waterproof and drainage capacity

Active Publication Date: 2021-12-21
CHINA CONSTR EIGHTH ENG DIV +1
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Problems solved by technology

On the one hand, the bearing capacity of the soil subgrade is poor, and the settlement is large, highlighting the uneven deformation of the rock-filled subgrade in special sections; Waterproof is the main focus. Once water enters the structure, it is difficult to discharge, which can easily cause structural water damage. Periodic overhaul and reconstruction will cause huge waste of resources and pressure on funds and environmental protection

Method used

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  • A method for paving full asphalt pavement of large particle size rock-filled subgrade

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Embodiment

[0031] as attached figure 1 As shown, the full asphalt pavement structure of the large particle size rockfill subgrade in this embodiment consists of a subgrade main part 1, a lower transition layer 2, an upper transition layer 3, a permeable layer, a sealing layer 4, a composite functional layer 5, an anti-crack drainage layer 6, The waterproof anti-rutting layer 7 and the noise-reducing wear layer 8 are formed.

[0032] The main part 1 of the subgrade, the lower transition layer 2 and the upper transition layer 3 are paved from bottom to top to form a large-size rock-fill subgrade. The permeable layer, sealing layer 4, composite functional layer 5, anti-cracking and drainage layer 6, waterproof and anti-rutting layer 7, and noise reduction and wear layer 8 are paved from bottom to top to form an asphalt mixture structure layer.

[0033] (1) Subgrade main part 1

[0034] The thickness is 3m, and it is filled with large-sized crushed stones of 10cm-30cm. The pass rate of 20c...

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Abstract

The invention discloses a method for paving a full asphalt pavement of a large-size rock-filled subgrade, and belongs to the technical field of road paving. The paving method is characterized in that the asphalt mixture structure layer is directly paved on the large-size rock-fill roadbed, and the large-size rock-fill roadbed is paved in layers as the main part of the roadbed and the transition layer, and the main part of the roadbed is divided into three parts according to the particle size. Fill with large particle size crushed stone not larger than 30cm, and fill the transition layer with crushed stone with particle size not larger than 37.5mm. Compared with the prior art, the pavement pavement method of the present invention has the characteristics of uniform bearing capacity of the rock-filled subgrade, strong ability to coordinate pavement deformation, good drainage, etc., and can greatly increase the service life of the pavement.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a method for paving a full asphalt pavement of a large-size rock-filled subgrade. Background technique [0002] The asphalt pavement structure of the prior art expressway is mainly roadbed + semi-rigid base layer + lower layer + middle surface layer + upper layer, and some special road sections use stone-filled roadbeds. On the one hand, the bearing capacity of the soil subgrade is poor, and the settlement is large, which highlights the uneven deformation of the rock-filled subgrade in special sections; Waterproof is the main thing. Once water enters the structure, it is difficult to discharge, which can easily cause structural water damage. Periodic overhaul and reconstruction will cause huge waste of resources and pressure on funds and environmental protection. Contents of the invention [0003] The technical task of the present invention is to provide a full asphalt pavement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/32E01C11/22E01C11/24
CPCE01C7/325E01C11/226E01C11/24
Inventor 苗雷杨永富胡佩清韦金城许瑞珂胡家波于浩季正军刘昌潍李增光江照伟
Owner CHINA CONSTR EIGHTH ENG DIV
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