LZ-HVA High-Viscosity Modifier
To promote the widespread adoption of permeable pavements in China, our company has independently developed LZ-HVA, a high-viscosity modifier specifically designed for drainage asphalt mixtures. This additive achieves an absolute viscosity dozens of times higher than that of conventional SBS-modified asphalt. Moreover, tailored to China's highway environments characterized by high temperatures and heavy traffic loads, it significantly enhances the pavement's resistance to rutting and aggregate loss, effectively overcoming both technical barriers and cost challenges that have previously hindered the large-scale implementation of drainage asphalt surfaces in our country.
Category:
Modified Materials for Asphalt Pavements
Product accessories:
Contact us
Product Description
Product Introduction
To promote the widespread adoption of permeable pavements in China, our company has independently developed LZ-HVA, a high-viscosity modifier specifically designed for drainage asphalt mixtures. This additive achieves an absolute viscosity dozens of times greater than that of conventional SBS-modified asphalt. Moreover, tailored to China's highway environments characterized by high temperatures and heavy traffic loads, it significantly enhances the pavement's resistance to rutting and aggregate loss, effectively overcoming both technical barriers and cost challenges that have previously hindered the large-scale implementation of drainage asphalt surfaces in our country.
Based on the high-elasticity, high-viscosity, high-toughness, and high-strength characteristics of the LZ-HVA high-viscosity modifier material, its applications have been further expanded to include functional uses such as steel bridge deck paving, carpet-style asphalt pavements, and high-quality SMA. Moreover, performance specifications can be customized according to the specific features of each project, enabling an integrated design approach that aligns material properties with pavement structure requirements.
Product Advantages
LZ-HVA high-viscosity modifier is used for steel bridge deck paving, delivering up to 99% elastic recovery and a tensile toughness of 35 Nm, enabling asphalt concrete to achieve exceptional levels of elasticity, toughness, and fatigue resistance. In essence, it pushes the performance of SMA and conventional dense-graded asphalt concrete to the ultimate "balance of rigidity and flexibility," while also offering excellent construction controllability and significantly lower costs compared to epoxy and cast-in-place asphalt concrete. This makes it a highly promising material solution for steel bridge deck paving that deserves widespread adoption. Its key features and performance advantages include:
1. High fatigue resistance: The four-point bending fatigue life (200 µΩ, 15°C, 20 Hz) reaches 300,000 cycles, whereas conventional SBS-modified asphalt SMA typically lasts around 100,000 cycles.
2. High Resistance to Flow Deformation: Standard rutting reaches 10,000 cycles/mm under high-temperature, heavy-load conditions at (70°C, 0.9 MPa), exceeding 4,000 cycles/mm—2 to 3 times higher than that of conventional SBS-modified asphalt.
3. Excellent Crack Resistance: The asphalt PG low-temperature grade has been improved by 1–2 levels, achieving a low-temperature ductility of over 40 cm and an elastic recovery rate of 99%. Additionally, the low-temperature flexural failure strain is approximately 30% higher compared to SBS-modified asphalt.
4. Excellent Anti-Aging Performance: The antioxidants in the LZ-HVA high-viscosity modifier enhance the ductility and penetration of asphalt after aging, resulting in improvements of more than 25% compared to SBS-modified asphalt for both post-aging ductility and post-aging penetration—both exceeding 85%.
Applicable Conditions
1. For draining asphalt pavements: Enhances the adhesion between asphalt and aggregates, ensuring the strength and load-bearing capacity of the large-pore structure in drainage asphalt mixtures. Additionally, it improves resistance to rutting and aggregate loosening—performance that is twice as good as SBS-modified asphalt.
2. For bridge deck paving: Achieves the dual high standards of elasticity, toughness, and high-temperature load-bearing capacity in asphalt concrete, combined with specialized design of asphalt mixtures to meet the complex stress conditions and demanding operational requirements of (steel) bridge deck asphalt concrete.
3. Used for carpet-style asphalt pavement: A significant scientific and technological achievement from the Ministry of Transport, enabling asphalt concrete to be rolled into coils without cracking, allowing on-site deployment and paving, thus facilitating rapid asphalt pavement repairs and emission-free construction.
4. Used as a stress-absorbing layer: In scenarios such as overlaying asphalt layers on existing cement pavements or other applications aimed at controlling reflective cracking, a hot-mix stress-absorbing layer is employed to minimize the impact of cracks in the underlying structure on the upper asphalt pavement layer.
Do you have any questions?
Leave your information
Contact Information
Hotline telephone
Email address
Company Address
Hunan University Science Park, No. 186 Guyuan Road, Yuelu District, Changsha City, Hunan Province
Copyright © Hunan Luzhi New Material Technology Co., Ltd.
Website Development:www.300.cn Changsha
Copyright © Hunan Luzhi New Material Technology Co., Ltd.
