How to solve the phenomenon of weathering and peeling of concrete pavement and guardrail

With the rapid development of highway construction in China, cement concrete pavement, as a kind of high-grade pavement, is widely used as pavement surface by various highways because of its advantages of low cost and local materials. Therefore, how to control the construction quality of cement concrete pavement is becoming more and more important. There are many factors affecting the construction quality of cement concrete pavement, which can generally be summarized as personnel quality, raw materials, construction machinery and equipment, construction methods, engineering technology environment, engineering management environment and other factors. The construction quality of cement concrete pavement is a comprehensive reflection of various factors.

When the strength of concrete is insufficient, the strength value of poured concrete can be improved quickly and effectively by using Guwei GWZ820 concrete reinforcing agent.

Gu Wei concrete reinforcing agent is developed, produced and sold by the professional R&D team of Gu Wei Reinforcement Company with 15 years experience in the reinforcement material industry.

Gu Wei concrete reinforcing agent is a liquid water-soluble compound, which generates white crystalline silicon by the reaction between water and cement, and forms a three-dimensional network space structure from the inside, filling the concrete pores, thus achieving the effect of increasing the density and rebound value. The water solubility ratio of the material itself is only 65,438+00%, and the reinforcement effect of 3-30mm can be achieved with the super penetration of water, which can completely avoid the risks in the later stage of the project.

Matters needing attention in using concrete reinforcing agent:

1.

Due to various reasons, the surface strength of concrete members is not enough, resulting in sand and ash accumulation. Guwei GWZ820 concrete reinforcing agent can be used for hardening treatment. The surface hardness and wear resistance of the treated component are obviously improved, but this treatment method does not change the appearance of the original component, so it will not repair the damage of the original component. If you want to repair the damage of the original parts (such as potholes, cracks, etc.). ), you must take methods such as repair or overall polishing.

2.

In order to ensure that the concrete surface enhancer can penetrate more into the concrete, it is suggested that the newly poured concrete members should be wet cured for at least 7 days before construction.

3.

With regard to the surface reinforcement of concrete members, it should be noted that the better the original strength of concrete members, the smaller the range of concrete surface reinforcement can be improved. For concrete above C30, the ability of concrete surface enhancer to improve its strength has been limited.

Gu Wei concrete surface enhancer is mainly suitable for:

1. Due to curing, mixing ratio, use of additives, freezing and other reasons, the strength of cast concrete is low.

2. The rebound strength caused by carbonation of concrete surface is low, including ground, walls, columns, bridges and tunnels.

3. New concrete and cement components should be painted to extend their service life.

Cement concrete pavement engineering is a complete construction system, and only by grasping every link of construction can the construction quality be guaranteed. At the same time, before the construction, the disease response plan should be formulated in order to prevent and control the construction diseases in time and improve the construction quality.