What are the cement pavement repair methods?

In the long-term past use, due to the load, climate and other factors, the cement road pavement will often appear a certain degree of damage. Therefore, in order to protect the public traveling safety, we need to pay great attention to the damaged pavement, and take some repair means to repair it. Next I want to introduce to you to explain a few common cement pavement repair means.

One,ConcreteRepair of pavement

This means of localized repairs, can repair the local pavement cracking, coefficient of friction reduction and other problems, to prevent further spread of damage to the pavement. Among the common methods are grouting reinforcement, fracture repair and diamond grinding. Grouting is used to fill the cracks on the concrete pavement or to fill the voids under the concrete in order to strengthen the pavement. Fracture repair for concrete slab surface damage, can be divided into full-depth repair and part of the depth of the repair, respectively, used to repair different degrees of damage to improve the pavement condition of the purpose. Diamond grinding is generally used to correct the coefficient of friction or to improve uneven pavements.

Two, smashing and fixing

When the damage of the road surface is serious to a certain extent, the above mentioned partial repair method is no longer effective, and need to take more thorough, more comprehensive measures, that is, crushing and fixing. This is done by first smashing the concrete pavement horizontally and compacting this section with a heavy car or truck, then cleaning up the concrete debris and laying new asphalt on its surface.

Third, concrete crushing

This method involves breaking up the original pavement as a gravel layer for the cement road and then laying asphalt concrete. This method may seem similar to the previous one, but this method's breaks up the slab and breaks it into smaller pieces, making this method suitable for more severely damaged pavements.

Four, sawing and caulking?

This means will not destroy the original slab layer of cement pavement, but directly in the original concrete surface layer directly add a layer of cement, and meticulous caulking work. It should be noted that, in order to ensure that the pavement restoration effect, no longer cause other pavement problems, in the sawing and caulking, it is necessary to ensure that the position of the sawing and unsealing position is not misaligned.

How to repair broken cement concrete pavement

Z2 concrete hardener

Product Description:

Z2 concrete hardener is specially developed to solve the problems of concrete floor, wall, sanding and insufficient strength. Z2 concrete hardener is specially developed to solve the problems of concrete floor, wall, sanding, insufficient strength and so on. It is a new type of water-based organic composite material with a unique formula, which can effectively penetrate the concrete surface layer of 3-10mm, and the free substances in the concrete undergo a series of complex chemical reactions, forming a three-dimensional mesh dense whole, thus greatly improving the strength of the concrete surface layer to achieve the effect of hardening of the ground to prevent and control the sanding, dusting, and long-lasting and effective service life and the same as concrete, and the construction is simple, only need to carry out the concrete surface. It is easy to use, just paint the surface of the concrete.

I, concrete hardener main function

Rapid hardening, ground dust, highly wear-resistant;

Enhance the original ground compression strength, impact resistance;

Enhance the resistance to chemical corrosion;

Significantly slow down the carbonation;

Maintenance is simple: only need to be routinely cleaned. Simple maintenance: only routine cleaning is required.

The scope of application of concrete hardener

The new and old concrete floors and cement mortar floors which are easy to be dusty and sandy;

Newly constructed original mortar calendared concrete floors;

Indoor and outdoor wall plastering layer sanding and falling off the surface;

Insufficient structural strength grade.

Improve the wear-resistant strength of the garage and factory floor

Three, concrete hardener construction method

First of all, thoroughly clean up the dust on the ground, as far as possible, leaving no ash, if you want to use water for the scouring process, be sure to construct the next day and ensure that the ground has no water or too wet;

To adopt the method of pouring while rushing, the ground will be cleaned up. Pouring while driving the method, the material evenly drive away, so that the material fully penetrated into the ground; 30 minutes to the phenomenon of seepage of dry places at any time to make up for the brush material, and the accumulation of the material to sweep evenly.

To note that the amount of material and the ground has a direct relationship with the degree of loose, the general ground brush 2-3 times to achieve the best results.

Fourth, the precautions of concrete hardener

Construction temperature: 0 ℃ - 45 ℃

Plastic bucket sealed, 0 ℃ above the preservation, the shelf life of 12 months

Transportation to check whether the packaging is complete, sealed

If accidentally taken, please immediately drink a lot of warm water to induce vomiting and seek medical attention. In case of skin contact or splash in the eyes, immediately flush with water or seek medical attention. Avoid contact with children.

Z30 Polymer Repair Mortar

V. Usage

1. used for repair and reinforcement of concrete surface defects, uneven surface smoothing;

2. thickening of the protective layer, the old concrete surface repair, etc.;

3. this product is " Highway, bridge repair and leveling reinforcement" polymer mortar used

4. Improve the durability of concrete, extend the service life of concrete, prevent water as a carrier of acid, alkali, salt, CO2, SO3 and other media on the erosion of concrete;

5. Containing rust-blocking components with a low rate of diffusion of chlorine ions, corrosion prevention function, and effectively prevent the steel reinforcement, corrosion and de-icing salt, salt and other media. Rust and de-icing salt, freeze-thaw damage; with low chloride ion diffusion rate of corrosion prevention;

Six, features

1. durability and concrete synchronization, composed of imported emulsions and inorganic powders two-component, is a polymer materials with adhesive, but also inorganic materials with durability of the new type of concrete repair materials

2. High compressive strength, rapid curing, good adhesive properties;

3. Good water retention properties and crack resistance, high alkali resistance, ultraviolet resistance;

4. Easy to operate, can be wet grass-roots construction, health and environmental protection.

VII, material performance:

Practical performance

Construction without complex construction machinery and technical requirements, without the need for a long period of time closed to traffic, construction can be opened to traffic after 2 hours; no need for excavation of the diseased parts, can save a lot of construction costs, materials and maintenance time, effectively delaying the construction and maintenance time, can save a lot of construction costs, materials and maintenance time, effectively delaying the construction and maintenance time, can save a lot of construction cost, material and maintenance time, effectively delaying the construction and maintenance time. And maintenance time, effectively slowing down the spread of road diseases and spread, extend the service life of the road; and repair and the original cement concrete pavement color close to the better aesthetics.

Bonding performance

Using the bonding capacity of the material itself and the principle of surface energy, the repair surface and the original concrete reaction into a unified whole, thus forming a high bonding strength, the bonding strength of 2 hours after the construction of the bonding strength of 1.6Mka can reach 1.6Mka, can be bonded with a variety of parts of the disease, the bonding capacity of basically independent of the thickness of the impact, can realize the 1mm ultra-thin repair.

Durability

Faster early performance and high early strength, and later not attenuation, many of the disease parts can be a one-time eradication; the material itself has a strong waterproofing, corrosion resistance and anti-ultraviolet ability, and its resistance to aging is more than 5 times that of the original cement concrete, the performance of the decay will not be earlier than the original concrete, and will not lose adhesion due to aging, and will not lose adhesion due to aging. It will not lose bonding ability and compressive strength due to aging.

Compressive properties

Patch curing material has a very strong compressive and flexural capacity, two hours of compressive strength of up to 22Mka, the late strength continues to rise, the peak compressive strength of 100Mpa or more, on the disease parts of the good reinforcement and support, repair thickness of 3mm can be achieved non-special loads of the road compressive requirements, in high speed and high speed roads, and the road is the most important part of the road. The repair thickness of 3mm can meet the compressive requirements of non-special loaded roads, and there will be no crushing and peeling off under high speed and high pressure driving conditions.

The above four methods are commonly used in the repair of cement pavement repair, and after a long period of practical demonstration, the repair of pavement is very effective. As for which method we should use in practice, it should be based on the original pavement condition, construction budget, traffic load and other factors to consider. Only comprehensive consideration of the actual situation, in order to choose the most appropriate and effective method, to maximize the extension of the service life of the cement road.