High Viscoelasticity Modifier

High-viscoelasticity modifier (HVE, High-viscosity elastic modifier) is a high-performance asphalt

Product Introduction

Product Features

Performance Indicators

Scope Application

Instructions for Use

High-viscoelasticity modifier (HVE, High-viscosity elastic modifier) is a high-performance asphalt modifier prepared from high-performance SBS, EVA, deeply desulfurized odorless rubber and high viscoelastic additives through a special process. It increases the viscosity and toughness of asphalt and can be applied by the "dry process". Featuring high cost performance, the product can be used in fibre-free SMA and hot-melt ultra-thin overlay. It can replace SBS and asphalt binder, reduce asphalt-aggregate ratio and improve pavement performance to meet the requirements of all grades of roads.

1. High cost performance: Low price with excellent performance, comparable to SBS. 2. Fiber replacement: When preparing SMA asphalt mixture, it can replace fibers, reduce the asphalt-aggregate ratio and further improve the skid resistance of SMA. 3. High viscosity and high elasticity: It greatly enhances the viscosity and performance of asphalt. When used for ultra-thin overlays, it can further cut costs.

Table 1 Technical Indicators of High-Viscoelasticity Modifier

Item	Unit	Technical Indicator	Test Method
Appearance	/	Small particles, ＜1 mm	Visual inspection
Density	g/cm³	＞1.1	GB/T 533-2008
Ash Content	%	≤18	GB/T 4498.1-2025
Hydrocarbon Content of Rubber	%	≥42	GB/T 19208-2020

Table 2 Technical Requirement for SMA Modified Asphalt Mixture

Test Item	Unit	Technical Requirement
Asphalt Content (Asphalt-Aggregate Ratio)	%	/
Air Voids	%	3~4
Marshall Stability	kN	≥6.0
Voids in Mineral Aggregate (VMA)	%	≥17
Voids Filled with Asphalt (VFA)	%	75~85
Voids in Coarse Aggregate Mixture (VCAmix)	—	≤VCADRC
Binder Loss from Schellenberg Draindown Test	%	≤0.1
Loss from Cantabro Test	%	≤15
Residual Strength Ratio of Immersed Marshall Test	%	≥85
Residual Strength Ratio of Freeze-Thaw Split Test	%	≥80
Dynamic Stability from Wheel Tracking Test at 60℃	cycles/mm	≥6000
Failure Strain in Low-Temperature Bending Test (-10℃)	με	≥2500

1. Applied to SMA-13, it can produce fibre-free SMA and improve skid resistance. 2. Applied to ultra-thin overlays, it can enhance the viscosity and performance of asphalt. 3. Applied to conventional asphalt mixtures AC/SUP, it improves pavement performance and reduces costs.