Normal-temperature special solid penetrating agent, ultra-thin overlay and construction method of ultra-thin overlay

Abstract

The invention discloses a normal-temperature special solid penetrating agent, an ultrathin overlay and a construction method of the ultra-thin overlay. The normal-temperature special solid penetrating agent is a non-emulsified system solid penetrating agent, comprises an infiltration component and a cementing component, and is prepared through mixing, by weight, 100 parts of asphalt, 80-100 parts of heavy cycloalkane distillate oil, 3-5 parts of a styrene-isoprene block copolymer, 16-34 parts of polyamide resin, 3-5 parts of metal oxide, 18-30 parts of a penetrating agent, 0.1-1 part of a cross-linking agent and 100-200 parts of an organic solvent. The infiltration component can infiltrate into an original pavement by 3-4 cm depth, the performance of aged asphalt of the original pavement is recovered, the anti-fatigue characteristic and the crack resistance of a foundation layer are greatly improved, the defects of oil shortage, looseness and the like of the original pavement and the effect of sealing capillary cracks are effectively repaired, and the bonding effect between the original pavement and the ultra-thin overlay can be effectively enhanced through the bonding component, so layering and separation are not easy.

Description

technical field [0001] The invention relates to the technical field of municipal road construction, in particular to a normal-temperature special cementing agent, an ultra-thin overlay and a construction method thereof. Background technique [0002] Research on functional overlays belongs to the category of expressway maintenance, and is applicable to asphalt pavement of various grades of highways for disease prevention or repair, improvement of skid resistance and other performance, and structural strength meeting the requirements of use. According to the thickness of paving, functional overlays can be divided into the following three types: ultra-thin overlays with a thickness of less than 25mm, thin-layer overlays with a thickness greater than or equal to 25mm and less than 40mm, and overlays with a thickness greater than or equal to 40mm and less than 60m noodle. Among them, the ultra-thin overlay asphalt concrete wearing course technology is mainly used for preventive ...

AI Technical Summary

Problems solved by technology

[0003] The current ultra-thin overlay technology route mostly adopts the OGFC open-gradation design, and the design void ratio is relatively large. The advantage of this is that it can increase the anti-skid performance of the road surface and reduce the water mist generated when driving in rainy days. Although it has good drainage performance And the function of reducing driving noise, but its shortcoming is that it cannot prevent the water damage of the original road surface

Although the adhesive layer oil is sprayed between the original road surface and the ultra-thin overlay as a waterproof adhesive layer, the effect of the interlayer bonding is far greater than the waterproof effect

At the same time, since the regeneration of the aged asphalt on the original pavement and the closure of capillary cracks on the original pavement are not taken into account, with the loading of time and traffic load, the small diseases of the original pavement will further deteriorate. This bottom-up damage will greatly affect the superstructure The service life of the thin cover, resulting in premature failure of the curing effect