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Pavement multi-hammer rubblization construction method

A construction method and petrochemical technology, applied in the field of road multi-hammer petrochemical construction, can solve the problems of few types of roads and unstable petrochemical effect, achieve stable crushing effect, save roadbed materials and transportation costs , the effect of solving reflection cracks

Inactive Publication Date: 2018-11-13
广西驰胜农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current MHB crushing technology has the following problems: few types of roads and unstable crushing effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The pavement multi-hammer crushing construction method includes the following steps:

[0020] (1) Preparation before construction: Before construction, first remove the asphalt surface repair materials existing on the concrete slabs of all crushed road sections, and then dig out the original structural layer of the hard shoulder of the crushed road section to the same height as the concrete pavement base. Horizontal drainage blind ditches shall be set up at the low sides of the superelevation sections of vertical curves and horizontal curves and all other areas with drainage problems, and the original steel guardrails shall be removed at the same time;

[0021] (2) Set up the test section: before the pavement crushing construction officially starts, select a road surface with a length ≥ 60m and a width of 5m as the test section in a representative section, and set the height of the drop hammer to 1.25m and the distance between the drop hammers to 10cm And the working sp...

Embodiment 2

[0030] The pavement multi-hammer crushing construction method includes the following steps:

[0031] (1) Preparation before construction: Before construction, first remove the asphalt surface repair materials existing on the concrete slabs of all crushed road sections, and then dig out the original structural layer of the hard shoulder of the crushed road section to the same height as the concrete pavement base. Horizontal drainage blind ditches shall be set up at the low sides of the superelevation sections of vertical curves and horizontal curves and all other areas with drainage problems, and the original steel guardrails shall be removed at the same time;

[0032](2) Set up the test section: before the pavement crushing construction officially starts, select a road surface with a length ≥ 60m and a width of 5m in a representative section as the test section, set the drop hammer height to 1.27m, and the drop hammer distance to 10cm And the working speed is 1.2m / min. Adjust ...

Embodiment 3

[0041] The pavement multi-hammer crushing construction method includes the following steps:

[0042] (1) Preparation before construction: Before construction, first remove the asphalt surface repair materials existing on the concrete slabs of all crushed road sections, and then dig out the original structural layer of the hard shoulder of the crushed road section to the same height as the concrete pavement base. Horizontal drainage blind ditches shall be set up at the low sides of the superelevation sections of vertical curves and horizontal curves and all other areas with drainage problems, and the original steel guardrails shall be removed at the same time;

[0043] (2) Set up the test section: before the pavement crushing construction officially starts, select a road surface with a length ≥ 60m and a width of 5m in a representative section as the test section, set the drop hammer height to 1.30m, and the drop hammer distance to 10cm And the working speed is 1.2m / min. Adjust...

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Abstract

The invention discloses a pavement multi-hammer rubblization construction method. The pavement multi-hammer rubblization construction method comprises the following steps of (1) preparation before construction is performed; (2) trial pavement section setting is performed; (3) MHB crushing is performed; (4) compaction is performed; (5) bituminous seal is performed, specifically, emulsified bituminous seal is immediately constructed to pavement after the compaction, the solid content of emulsified asphalt is controlled to be 50%-55%, the using amount of the emulsified asphalt is 2.0-3.5kg / m<2>,then aggregate materials are evenly perfused on the surface of the emulsified bituminous seal, wherein the particle diameter of the aggregate materials is 4.75-9.5mm, Los Angeles abrasion loss is lessthan or equal to 28%, water absorption is less than or equal to 2.0% and silt content is less than 3%, and finally a pneumatic-tired roller is used for rolling compaction of the pavement for 2-4 times. The pavement multi-hammer rubblization construction method can realize full collection of parameters of the pavement, performs adjustment and monitoring in time, performs timely adjustment for different pavement conditions, performs various types of pavement rubblization construction, and has a stable crushing effect, good economic benefits and broad market promotion value.

Description

【Technical field】 [0001] The invention belongs to the field of road surface construction, in particular to a road surface multi-hammer crushing construction method. 【Background technique】 [0002] The pavement multi-hammer gravelization technology was first developed by the antigao company of the United States and was applied in practice in 1995. It is mainly used for the reconstruction and expansion of various concrete pavements with poor plate integrity and structure. China introduced MHB crushing technology in 2002. The MHB crushing technology uses the falling of the heavy hammer to generate low-frequency and high-amplitude wave impact force to produce instantaneous and point-like impact on the old cement concrete slabs. Since the energy absorbed by the concrete slabs decreases from near to far when broken, the crushing The post-concrete soil particles increase sequentially along the depth direction, and are divided into the surface, the upper layer of crushed stone, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/12E01C23/06
CPCE01C23/065E01C23/122
Inventor 韩再满
Owner 广西驰胜农业科技有限公司
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