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Pavement multistage rubblization construction method

A construction method and petrochemical technology, applied in the field of multi-stage petrochemical construction of pavement, can solve the problems of unified construction, inapplicability, poor effect, etc., and achieve the effect of short construction period, strong adaptability, and uniform crushing

Inactive Publication Date: 2020-08-07
ZHENJIANG PORT GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing pavement crushing construction methods, multi-hammer crushing machinery or resonance crushing machinery is mostly used for pavement crushing, considering construction efficiency, construction period, high operability factors, construction cost and the actual situation on site. Adaptability. Generally, multi-hammer crushing machinery is used for construction. Multi-hammer crushing machinery has good construction efficiency for direct crushing of the entire plain cement concrete panel, but it is suitable for double-layer and single-layer reinforced cement concrete. The effect is poor in the case of panel, panel fracture area, etc., and the construction method has limitations, and a single construction method cannot be used for unified construction

Method used

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  • Pavement multistage rubblization construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A multi-stage crushing construction method for pavement, including crushing the whole slab of plain cement concrete, including the steps of:

[0065] A. Preparation before crushing construction;

[0066] (1) There are no hidden structures such as culverts, passages, and underground pipelines;

[0067] (2) The length of a single plain cement concrete panel is 5m, the width is 4m, and the panel thickness is 25cm; the average deflection value of a single panel on the old pavement is 0.163mm, and the rebound modulus of the top surface of the base is 21.0MPa;

[0068] B. Crushing construction of plain cement concrete panels;

[0069] (1) Use multi-hammer crushing equipment to crush the road as a whole; adjust the parameters of the multi-hammer crushing equipment, the height of the hammer drop is 2200ms, and the frequency of the hammer drop is 18 times / min;

[0070] (2) observe that the crushed layer of the plain cement concrete whole slab has subsidence; the crushed layer ...

Embodiment 2

[0081] A multi-stage crushing construction method for pavement, including crushing the whole slab of plain cement concrete, including the steps of:

[0082] A. Preparation before crushing construction;

[0083] (1) There are no hidden structures such as culverts, passages, and underground pipelines;

[0084] (2) The length of a single plain cement concrete panel is 5m, the width is 4m, and the panel thickness is 25cm; the average deflection value of a single panel on the old pavement is 0.12mm, and the rebound modulus of the top surface of the base is 15.1MPa;

[0085] B. Crushing construction of plain cement concrete panels;

[0086] (1) Use multi-hammer crushing equipment to crush the road as a whole; adjust the parameters of the multi-hammer crushing equipment, the height of the hammer drop is 2200ms, and the frequency of the hammer drop is 18 times / min;

[0087] (2) Observe that the crushed layer of the plain cement concrete whole slab is broken and has settlement, and t...

Embodiment 3

[0096] A multi-stage crushing construction method for pavement, including the crushing of plain cement concrete slabs, including the steps of:

[0097] A. Preparation before crushing construction;

[0098] (1) There are no hidden structures such as culverts, passages, and underground pipelines;

[0099] (2) The length of a single plain cement concrete panel is 5m, the width is 4m, and the panel thickness is 25cm; the average deflection value of a single panel on the old pavement is 0.179mm, and the rebound modulus of the top surface of the base is 22.1MPa;

[0100] B. Crushing construction of plain cement concrete panels;

[0101] (1) Use multi-hammer crushing equipment to crush the road as a whole; adjust the parameters of the multi-hammer crushing equipment, the height of the hammer drop is 2200ms, and the frequency of the hammer drop is 18 times / min;

[0102] (2) Observe that the crushed layer of the plain cement concrete whole slab is broken and has settlement, and the d...

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Abstract

The invention discloses a pavement multistage rubblization construction method. The method comprises the following steps: preparing before crushing construction; crushing the plain cement concrete panel, and integrally crushing the pavement; locally crushing local large concrete blocks on the surface of the rubblization layer; conducting breaking construction on the breaking position of the plaincement concrete slab body; backfilling graded broken stones and compacting; testing the rebound modulus of the top surface of the rubblization layer; comparing deflection average values before and after crushing; conducting crushing construction on the double-layer reinforced cement panel, and conducting punching presplitting through hydraulic punching equipment; integrally crushing the pavement;locally crushing local large concrete blocks on the surface of the rubblization layer; backfilling graded broken stones and compacting; testing the rebound modulus of the top surface of the rubblization layer; comparing deflection average values before and after crushing; and carrying out final subsequent processing. The construction process is suitable for the transformation process of most of old concrete pavements, the construction speed is high, the construction efficiency is high, important joints are subjected to strength reinforcement, and the overall construction cost is low.

Description

technical field [0001] The invention relates to the field of road surface construction, in particular to a road surface multi-stage crushing construction method. Background technique [0002] The busy cargo transportation in the port area has caused great pressure on the roads in the port area. Due to the long service life of some port roads, the current damage is serious. Most of the roads are close to the design life of the road surface, and some roads are beyond the design life. use. The road surface in the port area mostly uses cement pavement to meet the heavy-duty demand. However, the large number of joints in the cement pavement provides a sufficient way for water to enter the pavement structure, which leads to the weakness and hollowing out of the structural foundation. Once the cement pavement has a weak foundation and hollowing out, its service life will drop sharply, manifested as misalignment, board corner breaks, and plate fragmentation. The maintenance of dam...

Claims

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Application Information

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IPC IPC(8): E01C23/12E01C23/01
CPCE01C23/01E01C23/12E01C23/124
Inventor 李学洪白建军王建许志远
Owner ZHENJIANG PORT GRP CO LTD
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