Polymer cement concrete lamella

Abstract

The invention discloses a polymer cement concrete lamella which is characterized by comprising the following components in parts by weight: 5-40 parts of cement, 10-20 parts of polymer, 25-30 parts of anti-skidding aggregate,5-15 parts of filler, 0-2 parts of auxiliary agent, 0-3 parts of pigment and 20-25 parts of water. The invention has the advantages that the characteristics of high strength, strong cohesive force, good durability, long service life, and the like of the polymer cement material are fully utilized, the technical performance is reliable and the cost performance is high by forming a lamella on the road surface or the pavement surface.

Description

technical field [0001] The invention relates to a polymer cement concrete thin layer, in particular to a polymer cement concrete mixed with polymer, cement, anti-skid aggregate, filler, additives, pigment and water, which has the characteristics of short setting time . It is suitable for preventive maintenance and functional improvement projects of asphalt concrete pavement and cement concrete pavement. Background technique [0002] 1. Asphalt concrete pavement and its preventive maintenance [0003] Asphalt pavement has the advantages of comfortable driving, convenient maintenance, low noise, and easy recycling. It is widely used in highways and urban roads, and occupies a large proportion in the total mileage of roads. High-grade roads built or rebuilt in recent years, Almost all of them are asphalt roads. Under the comprehensive action of various factors such as driving load, air, sunlight, rain and snow, asphalt pavement will gradually produce ruts, cracks, potholes, ...

AI Technical Summary

Problems solved by technology

[0016] (1) It is a rigid road surface, and the existence of a large number of grooves and expansion joints reduces the driving comfort;

[0017] (2) The groove is notched to prevent slipping, the effect decays rapidly, the anti-slip performance is insufficient under humid weather conditions, and the driving safety is poor;

[0018] (3) The cement concrete pavement has high reflective glare characteristics, and the driving comfort is not good

[0026] Tunnel cement concrete pavement and asphalt concrete pavement will reduce the headroom. Due to the low headroom of some projects, it is often difficult to meet the headroom design requirements

Even if the elevation meets the requirements, after the asphalt pavement is overlaid, it will simultaneously bring technical safety risks of tunnel asphalt pavement burning

[0027] 3 Analysis of technical defects in preventive maintenance and transformation

[0047] 2) Color slurry seal layer: The construction is simple and the cost is relatively low. However, since this layer is located on the surface of the road, petroleum resin or decolorized asphalt is used as the cementing material, which is greatly affected by environmental factors. The cementing material is prone to aging and the cementing performance is lost. Peeling occurs after 3 to 5 years of use, and the durability is not good

[0048] 3) Colored non-slip pavement: As a colored non-slip wear layer is laid on the top of the original pavement, it is usually necessary to use special epoxy resin or other polymer materials and colored aggregates. The general thickness is 5mm, but the cost is high and the project is difficult to bear

[0049] 4) Coating-type colored pavement: The polymer materials used in coatings are faced with the aging effect of environmental factors, and the service life is short. With the aging of coating materials, peeling often occurs and the appearance quality is not good.

However, cement concrete materials also have their own insurmountable weaknesses, such as large shrinkage at the initial stage of solidification, internal defects, poor adaptability to deformation, easy cracking, and poor adhesion to organic bonding materials.