A kind of grouting equipment suitable for semi-flexible pavement construction

A semi-flexible pavement and equipment technology, applied in road repair, road, construction, etc., can solve the problems of increasing the difficulty and cost of cement mortar design, affecting the strength of semi-flexible pavement, and a little air that cannot be eliminated, so as to improve the construction speed and continuous operation capability, design difficulty and cost reduction, and the effect of reducing mobility requirements

Active Publication Date: 2017-07-14
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are often conflicts between these indicators. In order to meet the design requirements, engineers often need to add a variety of additives to the cement mortar during the design process to balance the relationship between the indicators, which increases the difficulty and cost of cement mortar design.
[0006] 3. Although a plate vibrator can be used to assist pouring, there will inevitably be a small amount of air in the voids of the asphalt mixture that cannot be removed, and the cement mortar cannot fully replace the air in the voids, resulting in pores inside the material after the cement mortar dries. Such defects destroy the integrity of the material and affect the strength of the semi-flexible pavement
[0007] 4. Since the plate vibrator needs to stay in all pouring areas for a sufficient time to allow the cement mortar to penetrate into the asphalt mixture better, this leads to the slow construction speed of the above pouring method and poor continuous operation ability

Method used

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  • A kind of grouting equipment suitable for semi-flexible pavement construction
  • A kind of grouting equipment suitable for semi-flexible pavement construction
  • A kind of grouting equipment suitable for semi-flexible pavement construction

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] see Figure 1~3 , the grouting equipment in this example includes a vehicle frame 1, a slurry storage box 2 and a vacuum pump 3 located on the vehicle frame; wherein the slurry storage box 2 is a cuboid metal box with an open top and bottom, and the metal The box is 1.5m long, 0.7m wide, and 0.5m high. Three rotary vane vacuum pumps 3 (model 2XZ-0.5, working pressure range of 1.0×10 -2 ~1.5×10 -2 Pa), the three vacuum pumps 3 are fixed on the inside of the pulp storage box 2 by the bracket 4. The vehicle frame 1 is composed of a pulp storage box 2, two axles arranged at two ends of the pulp storage box 2 and wheels 1-1 arranged at the ends of the axles. When the grouting equipment is placed on the road surface 6, the open edge of the bottom of the slurry storage box 2 is close to the road surface 6; the inlets 3-1 of the three vacuum pumps 3 are all close to the road surface 6, and the outlet 3-1 is close to the road surface 6. 2 is directly exposed in the pulp storag...

example 2

[0027] see Figure 5-7 , the vehicle frame 1 in this example is a flat type vehicle frame with four wheels 1-1, along its moving direction on the vehicle frame 1, a rotary vane vacuum pump 3 (model 2XZ-0.4 type, working pressure The range is 5.0×10 -2 ~6.5×10 -2 Pa), the other end is provided with a rectangular through groove, and the described pulp storage box 2 is located in this through groove, and its shape and size are identical with example 1, and the two ends of the pulp storage box 2 are welded on the through groove respectively by two connecting rods. On both sides, the edge forming its bottom opening is in close contact with the road surface 6 .

[0028] see Figure 5-7 , the inlet flange of the vacuum pump 3 links to each other with a suction pipe 3-3 extending above the pulp storage box 2, and the outlet flange links to each other with a discharge pipe 3-4 extending to the inside of the slurry storage box 2. The suction pipe 3-3 is provided with three branch pi...

example 3

[0029] Example 3 (this example is the experimental example of verifying the grouting equipment effect of the present invention)

[0030] 1. Purpose of the experiment

[0031] Verify the grouting effect of the grouting equipment described in Example 1.

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Abstract

The invention relates to a liquid material adding device for road construction, in particular to a grouting device suitable for semi-flexible road construction, the grouting device includes a vehicle frame with traveling wheels, and a slurry storage box is arranged on the vehicle frame and a vacuum pump; wherein, the bottom of the slurry storage box is open and close to the road surface; the inlet of the vacuum pump is located in the slurry storage box and close to the road surface under the slurry storage box; the end surface of the vacuum pump inlet is provided with a ring The sealing gasket is close to the road surface; the outlet of the vacuum pump communicates with the pulp storage box. The grouting equipment described in the present invention improves the pouring process to a certain extent, reduces the design requirements of the pouring material, not only has the advantages of fast pouring speed and strong continuous operation ability, but also reduces the internal defects of the pavement material and improves the semi-flexibility. Comprehensive performance of the pavement.

Description

technical field [0001] The invention relates to a liquid material adding device for road construction, in particular to a device for adding composite liquid cementing material to roads. Background technique [0002] The semi-flexible pavement is a pavement formed by pouring a special slurry (hereinafter referred to as cement mortar) with cement as the main component into the open-graded large-void parent asphalt mixture. This pavement has higher flexibility than cement concrete pavement and rigidity higher than asphalt concrete pavement, taking into account the advantages of both rigid and flexible pavement, from anti-rutting, anti-moving, reducing expansion joints and improving the stress relaxation performance of pavement materials, etc. Significantly improved road performance. Compared with the flexible pavement, the semi-flexible pavement has better high temperature stability, low temperature crack resistance and stability; and effectively reduces the rigid pavement bro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C19/17
CPCE01C19/17E01C19/174
Inventor 蔡旭吴旷怀杨国良包秀宁李燕枫
Owner GUANGZHOU UNIVERSITY
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