A kind of high temperature resistant cement concrete pavement stone exposure agent and its preparation method and application

Abstract

The invention relates to the technical field of road surface engineering, and provides a high-temperature-resistant cement concrete pavement stone exposure agent, which comprises the following components in mass percentage: 5-15% of low-temperature type retarder; 5-30% of high-temperature type retarder ; 10-20% super retarder; 0.1-0.3% coalescent; 0.1-8% penetrant; 0.1-8% surfactant; 1-8% colorant; The performance of each component in the high-temperature-resistant cement concrete pavement exposed stone agent provided by the invention is stable, the physical compatibility is good, and the density of each component is similar, and it is easy to form a uniform mixture; the penetration depth after spraying is controllable, and the exposed stone texture structure is rich , the spraying effect is good, there is no damage to the mortar on the surface of the road surface, and the development of the strength of the exposed stone pavement will not be affected after the washing treatment; the effect of retarding cement mortar is long-lasting, and the washing time interval can be as long as 35 hours, and it can normally play retarding under high temperature conditions effect.

Description

technical field [0001] The invention relates to the technical field of highway engineering, in particular to a high-temperature-resistant cement concrete pavement stone exposure agent and a preparation method and application thereof. Background technique [0002] In the months with abundant rain, the safety of cement concrete pavement decreases sharply, and the accident rate in rainy days increases significantly. The exposed stone cement concrete pavement can show good anti-skid ability by virtue of its rich pavement texture structure in rainy days, which ensures the running quality of the road in rainy days and greatly improves the safety of drivers traveling in rainy days. [0003] The exposed stone concrete pavement is a kind of road surface that exposes the coarse aggregate in the surface layer concrete to form a non-smooth surface. The exposed stone pavement is to spray a certain amount of exposed stone treatment agent on the surface of the pavement after the ordinary c...

AI Technical Summary

Problems solved by technology

[0004] Generally, the retarding effect of dew stone agents on the market is within 8 hours, which cannot maintain long-term and efficient retarding effect

On the specific construction site, considering the scheduling of construction machinery and equipment and the rest of the corresponding construction personnel, the spraying window period within 8 hours cannot meet the requirements of on-site construction, and the dew stone agents on the market are easily affected by temperature. Ordinary dew stone agents The retarding time above 50°C is about 5 hours, which cannot achieve the effect of high temperature and long aging; when it exceeds 50°C, it is easy to lose the retarding effect, which directly affects the depth of pavement texture structure, surface three-dimensional topography and distribution, and it is difficult to achieve high temperature conditions. A highly skid-resistant exposed stone pavement will be formed, which will affect traffic safety

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