How to repair the broken cement pavement, cement pavement repair mortar

The 21st century is an era of development, and the rise of various industries has also brought a series of architectural problems.

For example, concrete surface, road cracks, peeling and sand, potholes, leaking tendons and other symptoms emerge in an endless stream.

The newly developed concrete pavement rapid repair material developed by Lumei New Material Technology Co., Ltd. is the choice for cement concrete pavement disease repair. Fatigue, freeze-thaw cycles, bending pressure, water seepage and base layer damage can all cause damage to the cement pavement, resulting in high maintenance costs. Different from the previous rigid repair methods, the new research and development of the perfect series of concrete cement pavement rapid repair materials by Lumei New Material Technology provides a unique flexible repair product and technology, high flexibility, high tensile resistance, cross-expansion joint construction and high compressive resistance, so that the concrete quick repair product provides permanent repair for the cement concrete pavement.

Scope of application: Lumei is located in Heilongjiang Province facing Daqing, Heilongjiang and other national highways, provincial highways, national highways, county and township roads, municipal roads, gas station ground, airport ground, parking lot ground, workshop floor and bridges and other areas with large load force and prone to concrete damage and disease.

Cement pavement freeze repair to use [Guheng Concrete Quick Repair Treasure] for overlay repair, now many areas of cement pavement frozen sand peeling are repaired by this method.

Lumei's perfect series repair materials have the functions of high strength and wear resistance, super strong bonding, rapid curing, easy operation, durability and crack resistance, compression and anti-slip, peeling resistance and corrosion resistance.

Lumei Perfect Series Repair Materials are mainly suitable for the repair of surface damage such as cavities, honeycombs, damage, spalling, and exposed ribs of concrete structures, so as to restore the good performance of concrete structures. It can also be used as carbon fiber reinforced leveling mortar, high-performance masonry mortar and plastering leveling protection mortar for steel strand reinforcement of buildings (structures).

Feature 1: It is composed of two components: polymer emulsion and inorganic powder, which forms a strong and tough high-density mortar after curing;

2. The anti-rust components contained in it have anti-corrosion functions to prevent corrosion, chloride salt and freeze-thaw damage of steel bars;

3. Good adhesion, impermeability, crack resistance, impact resistance and wear resistance;

4. It is easy to use, can be constructed with wet base, and is healthy and environmentally friendly.

First, the technical indicators to be met by cement pavement repair mortar

Since cement pavement repair mortar is a special material used to repair the disease problem of cement concrete roads and bridges, it is required that high-quality repair mortar materials must have the following performance indicators:

Huineng road and bridge repair mortar is a one-component product, which is an upgraded and improved product of epoxy mortar, with technical patents. The material can be directly mixed with clean water and used, and the adhesion to the repaired structure is strong (the adhesion reaches the above), and it can become a complete integration with the original structure, and the color of the original concrete is basically the same. It also has the excellent characteristics of high strength, waterproof and anti-freezing, corrosion resistance, convenient maintenance, thermal expansion and cold contraction is basically the same as concrete, and the repair quality is stable and durable, so it has been widely used.

2. Introduction to the construction process:

1. Ground treatment. (Requirements: Remove the old and loose parts of the ground, which can be cleaned by a professional milling machine.) ）

2. After cleaning the soil, gravel and other debris in the repair area, blow it clean with a high-pressure air gun, and then thoroughly wash it with a high-pressure water gun.

3. Huineng Road and Bridge CCT-1 special repair materials are mixed with water and stirred evenly according to the required ratio, and manual use trowels and other appliances to assist in smoothing and receiving.

4. After repair, the hair-brushing and engraving should be made according to the requirements, and the joints should be cut according to the reserved expansion joint position, and the sealant should be poured. It will be open to traffic 2 hours after the restoration.

3. Benefit analysis:

Henan Huineng Road & Bridge Technology Co., Ltd. is a high-tech company engaged in the research and development, production and sales of new road maintenance materials, a governing unit of the Management and Maintenance Branch of the China Highway and Transportation Society, and a cooperative production and research base of the Chinese Academy of Engineering and the Transportation Research Institute.

The company's road, bridge, culvert and tunnel maintenance materials and technologies are widely used in: airport, high-speed, national highway, provincial highway, municipal, county and township road renovation and maintenance projects. Stable quality, fast and efficient, energy saving and environmental protection, for the benefit of the society.

The cement pavement repair mortar produced by Beijing Wusheng Intelligent Construction Engineering Co., Ltd. is mainly used for the rapid repair of cement concrete above 1cm, and is a fast-setting, steel fiber reinforced, heavy-load resistant non-shrinkage concrete repair material. It is a one-component cement-based compound, which can be used when mixed with water, and the construction is simple and convenient. It is widely used in concrete highways, bridges, airport runways, factory and warehouse floors, and road surfaces that bear heavy loads.

Features: 1. Early-strength, high-strength and fast coagulation: 30 minutes of initial condensation, 1-3 hours to open traffic. The compressive strength reaches more than 30MPa, and reaches more than 50MPa in 1 day.

2. High frost resistance: normal use at low temperature of 0-10.

3. High impermeability: the concrete structure of the repair material is dense, and the impermeability of concrete is 2-3 times that of ordinary cement.

4. Good carbonization resistance and low micro-expansion dry shrinkage.

5. Good corrosion resistance: the corrosion resistance coefficient is greater than 1.

The indicators are as follows: Test items Test results.

Flexural strength mpa 1h

3h1d3d7d

Compressive strength mpa 1h

3h1d3d7d

Summary. OK.

Can cement pavement can be repaired with asphalt, now there is a kind of asphalt cold patch, can be used for a variety of pavement base surface of the pothole repair, before the unit is the use of smoke platform Huatong asphalt cold patch, repair pothole can be opened to traffic immediately, can be used all year round, rainy season can also be normal construction, very convenient.

Cracks in concrete pavement can be directly repaired with asphalt, but can not be directly repaired with ordinary asphalt, and special grout or joint materials need to be used to improve performance, such as Jiage grout glue or Jiage seam tape, one is the grout modified asphalt of direct grout treatment, and the other is the seam material of seam treatment.

There are two main repair methods for cement pavement cracking: one is the caulking repair method, which is mainly aimed at the pavement cracking problem that cracks are formed; The other is the surface repair method, which is mainly for those small cracks that occur in the surface layer to repair.

Causes of cracks in cement concrete pavement:

Cement concrete pavement is prone to cracks, and there are many reasons for cracks in cement concrete pavement.

1.The strength of the soil foundation and base layer is not enough, so that the cement concrete pavement produces cracks.

2.The combined effects of repeated load stress, warping stress and shrinkage stress cause cracks in the cement concrete pavement. The deformation of cement concrete is divided into two categories, one is under load.

3.The repetitive action of water immersion and excessive vertical displacement causes the base layer to be eroded and hollowed out, resulting in cracks in the cement concrete pavement.

4.After the joint is opened, the load transfer ability is lost, and excessive load stress is generated around the periphery of the slab, so that the cement concrete pavement produces cracks.

5.Poor quality and unstable cement; The poor quality of coarse and fine aggregates will also lead to different degrees of cracks in the cement concrete pavement.

6.Improper construction operation and poor health maintenance are also one of the reasons for cracks in cement concrete pavement.

7.Corrosion cracks in steel bars.

Summary. 1. If the sand formation or hollowing phenomenon of the cement floor is not particularly serious, you can choose a professional cement floor sand treatment agent, which is a water-soluble chemical ingredient that can effectively penetrate into the cement floor and react with the ground.

2. When processing, the cement floor should be cleaned first and rinsed with water in advance.

3. Next, the liquefied gas on the cement floor should be completely dry, so that the sand or hollowing phenomenon of the cement floor can be changed to avoid the problem of cracking again in the later stage.

4. If the problem of damage to the cement floor is serious, clean the ground first, then add the treatment agent to water to dilute it, and evenly apply it to the repaired place. Generally speaking, it is necessary to brush twice before and after, brush the second time after each drying, and then add high-strength cement to mix putty powder to repair the base layer, which can effectively improve the problem of cement floor.

How to use cement pavement repair materials.

1. If the sand formation or hollowing phenomenon of the cement floor is not particularly serious, you can choose a professional cement floor sand treatment agent, which is a water-soluble chemical ingredient that can effectively penetrate into the cement floor and react with the ground. 2. When processing, the cement floor should be cleaned first and rinsed with water in advance. 3. Next, the liquefied gas on the cement floor should be completely dried, so that the sand or hollowing phenomenon of the cement floor can be changed to avoid the problem of cracking again in the later stage.

4. If the problem of damage to the cement floor is more serious, clean the ground first, and then add the key section agent to dilute it in water, and evenly apply it to the repaired place. Generally speaking, it is necessary to brush twice before and after, brush the second time after each drying, and then add high-strength cement to mix putty powder and repair the base layer, which can effectively improve the problem of cement floor.

This is my answer, I hope it is helpful to you, thank you <>

The construction unit encountered cracks in the concrete pavement during the construction process, how should it be effectively repaired? What kind of material can be used to repair it quickly and pass the acceptance? This is the voice of many engineers.

First of all, we should recognize several common reasons for cracks: 1. Construction reasons, improper use of construction machinery, uneven base layer, resulting in excessive friction, resulting in pavement cracks. 2. The mixing of concrete and material is insufficient, and the aggregate is layered.

3. Inappropriate material selection and unreasonable grading are several common factors that cause pavement cracks.

What should we do in the face of cracks in the cement pavement that have formed?

To solve the water pavement cracks, and ensure that the cracks will not leave obvious repair traces on the pavement after repairing, you can use the Jiatu Road and Bridge cement pavement crack repair material to repair, the model of this repair material is XL type cement pavement crack repair material, the material is the material research and development team of Jiatu Road and Bridge for the characteristics of cement pavement cracks, after more than 100 production processes and more than 50 production processes research and development, and in the Jiatu Road experimental site after countless repair experiments before the formal production and sales.

This material has participated in the repair of many cement pavement cracks, for the cement pavement temperature cracks, dry shrinkage cracks and man-made, climate caused by the cement pavement cracks have a very ideal treatment effect, the use of this material, not only can eliminate the pavement cracks that have been formed, at the same time, the good compatibility of the material can also reduce the pavement repair color difference, so that the color of the cement pavement is consistent. Realize the non-destructive and traceless repair of cement pavement.

【Common Problems】Cement concrete often has problems such as unevenness, hemp surface, exposed stones, potholes, damage and cracks.

Causes]: Most of them are caused by the imbalance of cement and sand ratio, heavy objects rolling back and forth, rain, and inadequate maintenance.

Material selection]: cement repair agent.

Applicable occasions]: cement concrete damage problems such as peeling and peeling off of cement floors, exposed stones on hemp surfaces, potholes and trenches, and crack repair.

Solution]:1Clean the ground first, try to be free of floating ash and debris.

2.Dilute the glue solution with water and apply the wet glue once at an interval of 10 minutes, a total of 2 times, and repair immediately after the second application.

3.After mixing the cement and sand with the repair agent glue to make it putty-like, scrape it on the place to be repaired, flatten it and collect it.

The repair agent material is equivalent to water, mixed with cement, sand and other materials to enhance the bond between cement.

Steps to repair cracks in cement floor: 1. Test the width of cracks in cement floor, and then clean up the cracks inside and around them. 2. Mix the cement pavement repair materials and water in a certain proportion, grout the cracks on the cement floor, and paste the tape at the same time.

3. Tear off the tape on both sides and fuse the coating film with the road surface, and use a putty shovel and brush to cooperate with the road surface.

Cement floor has a wide range of applications, and cement floor is used in many fields and places. Cement floors are prone to cracks in the process of pure use. The appearance of cracks will not only affect the appearance of the concrete floor, but also cause dust on the concrete floor over time, or even make it impossible to use normally.

The cement floor is cracked due to the hollow drum, resulting in surface compression and cracks, and the gel can be injected into the hollow drum with a special gel to fill the hollow drum, so that the glue can expand, solidify, and fill the hollow drum to achieve the compacting effect, and then destroy the ground to fill the gap.

Cracks or shrinkage cracks in the cement floor are caused by the thermal expansion and contraction of the building or cement itself, which can be repaired with marble glue or special repair agents. After repairing, it can prevent the crack from further expanding and improve the appearance, but the color of the mat sensitive pants will not be exactly the same as the original ground color.