Grouting equipment applicable to semi flexible pavement construction

Abstract

The invention relates to liquid material adding equipment used for road construction, in particular to grouting equipment applicable to semi flexible pavement construction. The grouting equipment comprises a vehicle frame provided with walking wheels, and the vehicle frame is provided with a slurry storage box and a vacuum pump; the bottom of the slurry storage box is provided with an opening and is close to the pavement; an inlet of the vacuum pump is formed in the slurry storage box and is close to the pavement below the slurry storage box; the end face of the inlet of the vacuum pump is provided with an annular sealing pad, and the sealing pad is tightly attached to the road surface; an outlet of the vacuum pump is communicated with the slurry storage box. According to the grouting equipment, the grouting process is improved to a certain degree, the design requirement of grouting materials is lowered, the grouting equipment has the advantage of being high in grouting speed and high in continuous operation capacity, defects in the pavement materials are reduced, and the comprehensive performance of semi flexible pavement is improved.

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...

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

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