Due to long-term use and unreasonable maintenance, many expressways have various problems, such as cracks, potholes, cracks, potholes, wear and tear, etc. These problems will not only seriously affect the safety and comfort of driving, but also affect the normal operation of the entire transportation system. In order to solve these problems, the corresponding repair and maintenance work must be carried out for the expressway.

(1) Craze repair

Cracking repair is relatively simple, mainly including the repair of surface broken holes and deep cracks. For the repair of surface broken holes, the method of filling before and after sawing in a crisscross manner can be selected, and the filling material can be asphalt or cement concrete. The repair of deep cracks requires cold processing or hot processing, which shall be determined according to the type and severity of cracks.

(2) Pit repair

The pit repair needs to clean the depth of the pit and then fill it with appropriate filling materials. The filling material can be determined according to the different conditions of the pavement, and asphalt or cement concrete is generally selected.

(3) Wear repair

Wear repair requires different repair methods. If the hemp damage is relatively minor, the surface turning method can be used to repair it; If the wear is serious, the method of compaction layer or reinforcement layer shall be used for repair.

In a word, the expressway repair construction scheme is a complex project, and detailed standards and specifications need to be formulated to ensure the construction efficiency and quality. At the same time, environmental protection and safety production must also be considered in construction. Only on the basis of standardization can we ensure the safe and smooth operation of the expressway and better serve the people.

The industrial floors such as workshops and warehouses have been used for a long time, and it is inevitable that there will be various degrees of ash, sand, holes, cracks, broken boards, sedimentation, edge gnawing, peeling, exposed stones, and potholes. Therefore, in order to make the enterprise image and environmental health requirements meet the standards, the warehouse floor needs to be repaired. How to repair it, Now Huineng Technology Company will take you to understand the industrial floor/ground repair scheme.

The floor of the warehouse and workshop needs to be frequently driven by carts and forklifts, as well as goods dragging, tool impact, equipment vibration, oil penetration, scrap iron wear, etc., so there are requirements for the floor to be high in strength, abrasion resistance, impact resistance, impermeability, clean, dust-free, easy to maintain, etc. If the floor is not solid, the floor of the workshop will be easily damaged The problems such as peeling off of floor paint, potholes, and oil stains are common in ground industrial plants, which not only damage the beauty of the production environment, but also are potential safety hazards in industrial production. What are the rectification measures for the ground damage of the workshop and warehouse? What should be done to repair damaged floors?

Rapid rectification and renovation of the ground is a major problem faced by many enterprises. Enterprises are busy in production and have no time to stop production for renovation. Moreover, the ground renovation after stopping production will cause great losses to enterprises' operation, while the ground is damaged seriously, especially for heavy industrial production enterprises. The conventional repair method of damaged floor needs to re file the old floor for polishing and re do the floor construction, but the construction period is long and dusty. The industrial floor repair materials professionally produced by Huineng cement floor repair materials manufacturers are widely used in the repair and renovation of damaged industrial workshop floors and painted floors, which are more flexible and efficient. Heavy wear resistance, heavy pressure resistance, load bearing resistance, so that the ground is not easy to wear. Low maintenance cost, easy maintenance, worn and damaged factory floor and warehouse floor are easier to repair, and local maintenance is more convenient.

Compared with other industrial floor materials, Huineng industrial floor materials have the following unique characteristics:

1. Good impact resistance. Impact resistance means impact resistance. When a heavy object vertically falls on the ground, the material can be intact and well protect the original base course ground. This function is also important for workshop floor materials used for heavy metal processing.

2. It has strong heavy load trafficability and can be customized to carry trucks or hard rubber tyred powered forklifts with a load of dozens of tons in different thicknesses.

3. Anti corrosion, anti oil stain, anti-static, anti acid and alkali corrosion, durable wear resistance.

4. The products are widely used in printing, binding, medical equipment, coating equipment, industrial automation, automobile manufacturing, electronic processing and other fields.

5. It can quickly repair the cement base or epoxy floor with sand, shell, burn out, crack, no strength, and heavy moisture, especially for the ground of industrial plants that cannot be stopped for ground rectification due to busy production. It can be directly put into use 1-2 hours after repair.

6. The maintenance and repair is simple without special maintenance requirements. It is handled by ordinary cleaning methods without professional operation.

White and black pavement reconstruction technology is a technology often used in cement concrete pavement reconstruction projects. It is mainly to use the cement concrete pavement as the base layer of the pavement after being stabilized, and then pave a layer of asphalt concrete to form a combination structure of rigid base and flexible surface, that is, white and black pavement reconstruction technology.

The white plus black pavement reconstruction technology can not only make full use of the strength of the original pavement, but also improve its strength when carrying out pavement reconstruction.

Traditional problem of changing white into black: transverse joint/longitudinal joint/crack reflection of original concrete slab

The traditional white to black base course concrete transverse joints/longitudinal joints/cracks are often filled with asphalt crack resistant paste, which is a pure flexible material. In actual cases, this process will continuously produce a large number of reflective cracks after 1-2 years, seriously affecting the service life of the road after white to black.

New technology, new process and new materials

Huineng white to black crack anti reflection composite stress absorption layer is a rigid and flexible process to deal with the cracks in the base course. There are no reflection cracks on several national highways and provincial roads that have been reconstructed, which solves the problem of reflection of many transverse joints and longitudinal joints that have been paved for 2-3 years.

Anti reflection technology for transverse joint and longitudinal joint of white and black pavement reconstruction construction process

(1) Milling and cleaning: horizontal joints, longitudinal joints and cracks shall be milled 65-70mm wide and 15mm deep with a small milling machine and cleaned;

2. Elastic stress absorption layer: first use elastic polymer spray as the interface treatment 3mm thick, press the alkali resistant glass fiber mesh cloth into the elastic polymer before initial setting, and then spray 2mm thick elastic polymer to completely wrap the mesh cloth.

3. Rigid stress dispersion layer: 10mm thick high-strength and high toughness composite fiber HN-SC material is used to pave the surface. Before initial setting, black emery is spread on the surface. After setting, the working face can be opened after cleaning the excess gravel and curing for 4 hours.

Success stories:

In 2014, the cement pavement of S120 provincial highway was paved with asphalt, and the transverse joints and longitudinal joints were treated with anti reflection There is almost no reflection between.

In 2018, the cement pavement of Yeting Jiangjun Avenue in Huizhou City, Guangdong Province was paved with asphalt, and the transverse joints and longitudinal joints were treated for anti reflection. There was no crack reflection in five years.

Cost

The cost of this process is basically similar to that of the traditional asphalt anti cracking process, which is less than 18 yuan per square meter. The reconstruction quality can be greatly improved without significantly improving the total budget of road reconstruction.

By using this process, the original white to black thickness of 12cm can be reduced to 10cm, and to a certain extent, "cost reduction and efficiency increase" can be achieved.

The airport runway is the core part of the airport. If there is a disease problem on the airport runway, there will be a great potential safety hazard for aircraft taking off and landing, which will seriously affect the safety of aircraft taking off and landing. Therefore, the quality of the airport runway pavement should not be a little sloppy. When there is a disease problem, it should also be timely repaired. Therefore, the quality requirements for repair materials are very high. Production and construction of manufacturers with very professional R&D and production capacity are required. At present, Huineng Road and Bridge is the authoritative quick repair material commonly used in China, which is divided into two types: JC type special repair material for airport pavement surface and QR type special repair material for airport pavement deep layer.

The special quick repair material for airport road damage is a super early strength concrete structure repair material prepared with cement as the basic binder, high strength material (quartz sand) as the main aggregate, supplemented by macromolecular rubber powder, high-efficiency water reducer, early strength agent, expansion agent, anti segregation and other materials. It has good self flow property, fast hardening, early strength, high strength, no shrinkage and slight expansion; Non toxic, harmless, non aging, no pollution to water quality and surrounding environment, good self tightness, rust resistance and other characteristics.

Technical features:

1. Emergency repair, quick repair in one hour, no flight suspension. One hour after repair, the strength reaches 36Mpa, meeting the navigation requirements.

2. Save time, resources and costs. The construction operation is simple without using large machinery. High efficiency. Compared with traditional removal and plate replacement, it can greatly save money.

3. Stable quality. The bonding strength of the material is ≥ 2.8Mpa, and it is firmly bonded to the original ground. Strong impact resistance, bending resistance ≥ 11Mpa. High strength, heat and cold resistance, and frost resistance performance above F300.

4. Energy saving, environmental protection and high efficiency. There is no need to remove or replace the board, and there is less engineering waste. The quality is stable and durable, and the economic and social benefits are obvious.

Huineng Road and Bridge Technology Co., Ltd., headquartered in Zhengzhou, Henan Province, was established in 2008. It is a high-tech company engaged in the research, development, production, sales and construction of new materials for airport pavement maintenance. The company's products and technologies are mainly used in military airports, civil airports, international airports, highways, railways, municipal, water conservancy, industry, civil buildings and other fields, serving many national and local major projects, and have been widely recognized and praised by customers! It has successfully repaired Xinzheng International Airport, Military Airport and other airports for more than 10 years, and is still intact.

For technical consultation, please call Henan Huineng Road and Bridge Technology Co., Ltd. (Tel: 400-9018-518) to learn more about materials, processes, equipment, technology, etc.

Henan Huineng Road and Bridge Technology Co., Ltd. is a large manufacturer and solution service provider of rapid repair materials for concrete roads and bridges, and a high-tech enterprise in the rapid repair industry of cement concrete roads! Huineng Road and Bridge, a brand of concrete pavement repair and maintenance, and a large manufacturer of pavement maintenance materials. Over the years, the quality precipitation is closely connected with the market, and the national key concrete road repair partner. We always insist on creating higher quality products and serving the global road with more cutting-edge technology. The service life of expressway bridge deck and bridge expansion joint repaired with QM type bridge repair special materials produced by Henan Huineng Road and Bridge Technology Co., Ltd. has been extended by more than 5 years, and it is a well-known enterprise in the road rapid repair industry! Huineng Road and Bridge provides you with a full set of bridge deck repair solutions as follows:

1、 Type of disease treated

Professionally deal with bridge expansion joint damage, bridge deck pavement potholes, serious cracks and other diseases that seriously affect traffic safety and bridge durability requirements. After repair, it can pass quickly for one hour and be free of maintenance for three years.

After years of use of the road, the subgrade has become void and subsided, and the road panel has been seriously damaged, such as wear holes, broken corners, edge gnawing, crushing, and settlement, which have affected production safety and product delivery efficiency. In order to avoid further deterioration of road quality and ensure the completion of production and delivery tasks, it is necessary and necessary to overhaul the road without stopping production.

Huineng's heavy haul pavement repair technology mainly includes the following aspects:

1. High performance trenchless rapid pressure grouting reinforcement technology for subgrade (stabilizing subgrade to solve the problem of subgrade ponding, void and settlement).

2. High performance rapid pouring and plate replacement technology for broken slabs (to solve the problem of concrete slab crushing).

3. Rapid repair technology for pavement structure damage and crack.

4. High performance thin layer repair technology for pavement surface wearing course (to solve problems such as pavement surface damage and exposure).

Summary of technical advantages of Huineng Road and Bridge Science and Technology Repair

• Robust and durable

After repair and reconstruction, the stability bearing capacity of the subgrade is strong, and the bearing capacity of the pavement slab is significantly improved, exceeding the standard of excavation and reconstruction.

• Time saving and fast

The construction is convenient, the construction period and maintenance time are effectively shortened, and the traffic can be quickly restored to ensure smooth traffic.

• Efficient and environmentally friendly

The technical scheme has high work efficiency, less solid waste and garbage, energy saving, less dust generation and less air pollution.

• High cost performance

Compared with the total cost of digging and repairing, the reconstruction scheme can effectively save more than 30% of the cost, and has obvious economic benefits.

• Mature process

Huineng repair technology has been used for many years in airports, high-speed railways, ports, national and provincial roads, and the Group's factory areas, and has been used for a long time to improve the stability of the system.

We can also provide you with special ground technology:

Anti riot concrete, anti-static non ignition, oil resistant anti-corrosion, foundation grouting and other complete sets of technologies, welcome to inquire!