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Method for paving cement concrete pavement

A cement concrete and pavement laying technology, which is applied to chemical instruments and methods, on-site coagulation pavement, roads, etc., can solve the problems of low pavement quality, improve pavement quality, avoid longitudinal cracks, and prolong service life Effect

Active Publication Date: 2012-02-29
LONGJIAN ROAD & BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a cement concrete pavement laying method, which is used to solve the problem of low pavement quality in the existing cement concrete pavement laying method

Method used

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  • Method for paving cement concrete pavement
  • Method for paving cement concrete pavement
  • Method for paving cement concrete pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Clean and level the lower base, and control the elevation of the base within the design line;

[0027] 2. Construction lofting of concrete surface

[0028] The slipform paver paves the cement concrete road along the reference line on both sides or one side. When setting out the reference line, the longitude and latitude levels should be used to measure and set the setting ball. Sleek and smooth; the distance of the reference line is 12.5 meters, the corner line stake is 2 meters, the pulling force of the guy wire is 100 kg, and the length of a guy wire is 350 meters.

[0029] 3. Mixing station to mix concrete

[0030] A concrete mixer is used for mixing, and the mixing ratio of the cement concrete is 31% of the sand rate, 17% of the cement bone ratio, 3.6% of the air content, and 1.2% of the EMC superplasticizer.

[0031] Cement: medium sand: 2cm gravel: 1.5cm gravel: water = 340: 621: 976: 414: 153;

[0032] Water-cement ratio: 0.45, slump: 2.5-3.5cm, after mixin...

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Abstract

The invention relates to a method for paving cement concrete pavement. The conventional cement concrete pavement is constructed by a method for constructing the cement concrete pavement through fixed templates, and the method has the defects that due to instability of the templates or negligence, the templates are expanded and non-straight,, small broken lines are formed on the templates on a curve, and geometric dimensions are irregular. The method for paving the cement concrete pavement comprises the steps of: (1) clearing and flattening a lower subbase, and controlling the elevation of thesubbase to be within the range of a design line; (2) paving cement concrete roads by using a slip-form paver along datum lines on two sides or one side, performing the construction paying off of concrete surfaces, and surveying and arranging paying-off balls by adopting longitude and latitude levels; (3) blending concrete by using a blending station; (4) performing paving by using the slip-form paver; (5) performing exact leveling and fine smoothing through artificial matching; (6) napping and cutting joint; (7) curing; and (8) filling the joint. The method is used for solving the problem of poor quality of the road surfaces in the conventional method for paving the cement concrete road surfaces.

Description

Technical field: [0001] The invention relates to a cement concrete pavement paving method, in particular to a method for paving a cement concrete pavement with a slip form paver. Background technique: [0002] Cement concrete pavement has the advantages of large bearing capacity, good stability, long service life, and low daily maintenance cost. It is one of the main types of high-grade highways. The existing construction of cement concrete pavement adopts the method of fixing the formwork to build the cement concrete pavement. Sometimes the vertical formwork is not firm or neglected in this method, causing the formwork to expand and not straight. specification. In addition, the manual work is roughly leveled manually, vibrated with a vibrating rod, then vibrated with a flat plate, leveled with a vibrating beam, and then leveled with a three-axis leveling machine, manually vibrated, and some vibrated more A little bit, some vibrate a little less, unbalanced; three-axis lev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00E01C11/06E01C7/14B28C7/04
CPCY02A30/60
Inventor 朱天明李超
Owner LONGJIAN ROAD & BRIDGE
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