-
AboutHoude Group is a high-tech enterprise specializing in engineering building materials. It actively promotes the research, development, and production of new materials, new processes, and new technologies. It is a well-known Chinese engineering building materials Brand company with independent intellectual property rights and core innovative products.
-
CaseHoude Group has been deeply cultivating overseas markets, successively establishing companies in Dubai, Hong Kong, Malaysia, Pakistan and other regions. It has good project cooperation in dozens of countries worldwide, with projects spanning Asia, Africa, and Europe. Its business scope includes various engineering fields such as highways, railways, airports, bridges, ports, and hydropower stations.
-
ProductsHoude Group holds independent intellectual property rights and multiple iOS certifications. It independently researches and produces several series of high-grade, high-quality engineering and construction materials, including Houde Brand cement concrete admixtures, asphalt concrete admixtures, engineering fibers, and geosynthetic composite materials. These high-quality products have been consistently well-received by numerous construction supervision units.
-
Industrial BaseThe company integrates industrial bases such as concrete admixtures and civil composite materials, relying on internationally leading research and development technology and intelligent production processes, to build an industrial system covering the entire chain of research and development, production, and sales. Driven by technology, we continuously provide green and reliable comprehensive solutions for global infrastructure construction, and strive to become a leading enterprise in the fields of engineering materials and intelligent equipment.
-
Open CollaborationWe actively open and share our resources and platforms, welcoming companies and individuals to actively contact us for agency and cooperation on products, markets, technology, and resources.
-
TalentHuman capital is the most precious asset of Houde. We have always attached great importance to employee development, allowing employees' abilities to develop more focused and clearly. A free and inclusive cultural atmosphere allows you to develop freely; your voice will be heard. Here, you will encounter not just colleagues, but also partners who grow side-by-side.
-
AboutHoude Group is a high-tech enterprise specializing in engineering building materials. It actively promotes the research, development, and production of new materials, new processes, and new technologies. It is a well-known Chinese engineering building materials Brand company with independent intellectual property rights and core innovative products.
-
CaseHoude Group has been deeply cultivating overseas markets, successively establishing companies in Dubai, Hong Kong, Malaysia, Pakistan and other regions. It has good project cooperation in dozens of countries worldwide, with projects spanning Asia, Africa, and Europe. Its business scope includes various engineering fields such as highways, railways, airports, bridges, ports, and hydropower stations.
-
ProductsHoude Group holds independent intellectual property rights and multiple iOS certifications. It independently researches and produces several series of high-grade, high-quality engineering and construction materials, including Houde Brand cement concrete admixtures, asphalt concrete admixtures, engineering fibers, and geosynthetic composite materials. These high-quality products have been consistently well-received by numerous construction supervision units.
-
Industrial BaseThe company integrates industrial bases such as concrete admixtures and civil composite materials, relying on internationally leading research and development technology and intelligent production processes, to build an industrial system covering the entire chain of research and development, production, and sales. Driven by technology, we continuously provide green and reliable comprehensive solutions for global infrastructure construction, and strive to become a leading enterprise in the fields of engineering materials and intelligent equipment.
-
Open CollaborationWe actively open and share our resources and platforms, welcoming companies and individuals to actively contact us for agency and cooperation on products, markets, technology, and resources.
-
TalentHuman capital is the most precious asset of Houde. We have always attached great importance to employee development, allowing employees' abilities to develop more focused and clearly. A free and inclusive cultural atmosphere allows you to develop freely; your voice will be heard. Here, you will encounter not just colleagues, but also partners who grow side-by-side.
Flocculent lignin fibers
I. Product Introduction
HD series lignin fibers are available in two forms: flocculent and granular. The raw materials are all natural wood fibers. Using high-quality natural wood, after screening, splitting, high-temperature treatment, bleaching, chemical treatment, neutralization, and decomposition of the lignin and most of the fibers, the remaining inert organic fibers form a fiber structure chain. Then, it is sieved into fibers of different lengths and thicknesses to meet the needs of different application materials.
Because the processing temperature is as high as 260℃ or more, the resulting product is a chemically very stable substance, not corroded by common solvents, acids, or alkalis. It has excellent qualities of being non-toxic, odorless, pollution-free, and non-radioactive. It does not affect the environment and is harmless to the human body, belonging to a green and environmentally friendly product, which is not possessed by other mineral lignin fibers.
The microstructure of the fiber is band-shaped and curved, uneven, and porous. The intersections are flat and form a three-dimensional network in the asphalt, hindering the flow of asphalt. This product has good toughness, dispersibility, and chemical stability, strong water absorption capacity, and excellent thickening and crack resistance, which can significantly improve various properties of asphalt concrete pavement.
II. Product Characteristics
1. Significantly improves the rutting resistance of asphalt concrete;
2. Prevents asphalt bleeding and effectively improves the high-temperature stability of asphalt concrete;
3. Significantly enhances the flexibility of asphalt concrete and improves its low-temperature crack resistance;
4. Effectively reduces the generation of reflection cracks;
5. Improves the water stability of asphalt concrete;
6. Improves the fatigue resistance and stripping resistance of asphalt concrete;
7. Improves the tensile and shear performance of asphalt concrete.
III. Performance Parameters
IV. Main Function and Principle
● Reinforcement effect:
After adding lignin fiber to the SMA mixture, the fiber exists in a three-dimensional dispersed state in the mixture. Like various steel fiber concrete, soil grids, and geotextiles, it can play a reinforcement role, thereby improving the high and low-temperature stability of the asphalt mixture.
● Dispersion effect:
Lignin fiber has good dispersibility, and it can make asphalt, mineral powder and other components evenly dispersed in the mixture. Without fiber, a large amount of asphalt mineral powder may become a colloid, which cannot be evenly dispersed between aggregates. “Oil stains” will be clearly seen on the pavement. Lignin fiber can disperse the colloid and prevent the formation of colloidal substances leading to pavement “oil stains”.
● Holding effect:
Lignin fiber in asphalt mixture, through the adsorption and absorption of asphalt on the fiber surface and inside, holds more asphalt. This thickens the asphalt structural film, improving the strength and durability of the mixture.
During production, transportation, and paving, due to its own gravity, asphalt will flow to the bottom of the mixture. After adding lignin fiber during mixing, the fiber, with its unique three-dimensional network structure, firmly holds the asphalt, preventing asphalt leakage and segregation. Moreover, the fiber has strong reinforcement characteristics and can greatly enhance the strength of the asphalt mixture, thereby greatly improving the high and low-temperature stability of the mixture.
● Stabilizing effect:
Lignin fiber keeps the asphalt film in a relatively stable state. In the summer at high temperatures, when the asphalt expands due to heat, the internal voids of the fiber will become a buffer space, preventing it from becoming free asphalt and bleeding, improving high-temperature stability. At lower winter temperatures, the fiber gives the asphalt concrete better elasticity, enhancing low-temperature stability.
● Bonding effect:
Improves bonding strength. The fiber can increase the adhesion between the asphalt and the aggregate, and improve the bonding strength between the mixtures through oil film bonding.
V. Product Advantages
● Superior performance
Only about 0.3% of Houde lignin fiber needs to be added to significantly improve the performance of asphalt mixtures.
● High cost performance
A small amount of addition can significantly improve the performance of asphalt mixtures, and the Price is lower than other types of asphalt modification additives. No special equipment is required, and energy consumption during the production process can be significantly reduced.
● Does not affect mix design
Because the improvement of asphalt concrete performance by lignin fiber mainly relies on its physical properties, it has no impact on the properties of various raw materials.
● Simple construction process
It is directly added during the mixing of asphalt mixtures, and only minor adjustments to the time and temperature of the traditional mixing method are needed.
● Stable chemical properties
It is not corroded by common solvents, acids, and alkalis, and is easy to store and transport.
● Green and environmentally friendly
Non-toxic, odorless, pollution-free, and non-radioactive, it does not affect the environment and is harmless to humans.
VI. Applications
● F1 racing track;
● Anti-skid surface layer for highways and urban expressways, trunk roads;
● High-altitude areas, effectively reducing thermal shrinkage cracks;
● Airport runways, overpasses, ramps;
● Highway heavy traffic sections, sections with many heavy and overloaded vehicles;
● Road surfaces in high-temperature and high-rainfall areas;
● Bridge deck paving, especially steel bridge deck paving;
● Bus lanes on urban roads;
● Intersections, bus stops, parking lots, cargo yards, ports and docks on urban roads, etc.
VII. Instructions for Use
1) Recommended Dosage
The usual dosage is 0.3% of the mass of the asphalt mixture. For specific situations, please follow the actual design dosage.
2) Construction Process
Basically the same as the construction of traditional asphalt concrete. Specific processes can refer to the construction processes of other Houde series products.
For intermittent mixers, manual feeding can be used. When feeding, the bag of fiber can be put in together with the hot aggregate; continuous mixers can use a fiber feeder for automatic feeding.
VIII. Supporting Value-Added Services
★ Provide economic analysis of incorporating Houde lignin fiber according to customer needs;
★ Provide consulting services on asphalt mixture mix design when incorporating Houde lignin fiber according to customer needs;
★ Provide on-site construction guidance;
★ Provide supporting automatic adding and metering devices to achieve automation and precise metering during production.
IX. Partial Project Cases
Hening Expressway Expansion Project - Asphalt Pavement
Enshi Section of the Shanghai-Chengdu Expressway - Asphalt Pavement
Shandong Qingyin Expressway - Asphalt Pavement
Shenzhen Section of the Western Channel - Asphalt Pavement
Huzhou Section of Zhejiang Hangzhou-Ningbo Expressway - Asphalt Overlay Repair
Hongze Section of Jiangsu Ninghuai Expressway - Asphalt Pavement
Shandong Heguan Expressway - Asphalt Pavement
Anhui Gaojie Expressway - Asphalt Pavement
Headquarters: 7th Floor, Tower B, R&F Center, Tongzhou District, Beijing
Zip Code: 101100
Telephone:010-58859568
Fax: 010-81580920
E-mail:bjhoude@chinahoude.com
