Filling layer self-compacting concrete side surface maintenance device

Abstract

A filling layer self-compacting concrete side surface maintenance device comprises a water impermeable nonwoven geotextile, a hook and loop fastener loop face layer, a hook and loop fastener hook facelayer and a water permeable nonwoven geotextile which are connected and fixed in sequence from outside to inside; and the hook and loop fastener hook face layer is full of super absorbent resin particles. The filling layer self-compacting concrete side surface maintenance device has the advantages that the structure is simple, the construction efficiency is high, the maintenance effect is good, the filling layer self-compacting concrete side surface maintenance device can be transferred, and the filling layer self-compacting concrete side surface maintenance device is low-carbon and environmentally friendly.

Description

technical field [0001] The invention relates to a side maintenance device for self-compacting concrete of a filling layer. Background technique [0002] CRTSIII slab ballastless track is a new type of track structure with independent intellectual property rights in my country. The cross section of CRTSIII slab ballastless track structure consists of fasteners, rails, prefabricated track slabs, self-compacting concrete filling layers and Composition of the base plate. The filling layer uses self-compacting concrete as the filling material. As the filler between the track slab and the base slab, the self-compacting concrete filling layer plays the functions of supporting, limiting, and adjusting the elevation. In the construction process of the CRTSIII slab ballastless track, the quality of the self-compacting concrete of the filling layer is the most important link. Since the filling layer structure belongs to a typical "sandwich" structure, the upper part of the self-compa...

AI Technical Summary

Problems solved by technology

Although the curing liquid curing method is widely used, the following problems often exist in the actual curing process: a. Because the plastic film is light and thin, in engineering examples, there are often plastic films surrounding the side surface of the self-compacting concrete of the filling layer The phenomenon of separation from the side surface of the filling layer due to strong wind or sun exposure; b. In the actual construction process, because the plastic film does not completely cover the joint area between the track slab and the filling layer, the filling layer is self-compacting on the side surface of the concrete Contact with the outside world, which affects the actual maintenance effect; c. This method is often difficult to achieve the maintenance standard because it cannot be painted evenly according to the standard requirements, and the maintenance quality is difficult to control and manage

These shortcomings not only affect the growth of the early strength of self-compacting concrete, but also cause shrinkage cracks on the surface of the concrete due to water evaporation, which further seriously affect the quality of the self-compacting concrete filling layer and the overall structure of the track.

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