WMA Warm Mix Additive

WMA warm-mix additives are available in liquid and solid forms. Among them, liquid FWMA warm-mix add

Product Introduction

Product Features

Performance Indicators

Scope Application

Instructions for Use

WMA warm-mix additives are available in liquid and solid forms. Among them, liquid FWMA warm-mix additive is a dark yellow-brown viscous liquid, and solid GWMA warm-mix additive is white powdery. The warm-mix additive can be directly added into asphalt to reduce the working temperature of asphalt mixtures. It is applicable to various types of asphalt mixtures. Compared with similar hot-mix asphalt mixtures, the construction temperature can be reduced by 30～50℃.

1. WMA warm‑mix additive is a non‑toxic, odor‑free and eco‑friendly product, which can be directly added into asphalt. 2. It can reduce the temperature by 30‑50℃, save energy, mitigate environmental pollution and cut costs. 3. The mix design, mixing and construction technologies of warm‑mix asphalt mixtures are consistent with those of hot‑mix asphalt mixtures. 4. The addition of WMA can significantly improve the compactness.

Property	Specification	Test Method
Density (20℃), kg/L	0.88-1.0	GB/T1884
Kinematic Viscosity (60℃, mm²/s)	50-180	SH/T0654-1998
Water Content	＜0.5%	GB/T260-2016
Flash Point	≥210℃	GB/T267
Appearance	Dark brown to black	Visual Inspection
Odor	Petroleum asphalt odor	Olfactory Inspection

Low-Temperature Construction Temperatures

Construction Procedure	Temperature (℃)
	Base Asphalt	Modified Asphalt
Asphalt Heating Temperature	150~160	165~175
Aggregate Heating Temperature	155~165	165~175
Asphalt Mixture Discharge Temperature	145~155	155~165
Mixture Paving Temperature, minimum	135	145
Initial Compaction Temperature, minimum	125	130
Secondary Compaction Temperature, minimum	100	100
Final Compaction Temperature, minimum	80	80

1. Extends paving and compaction time during winter construction. 2. Reduces temperature by 20-30℃ for asphalt pavement construction in tunnels. 3. Improves mixing performance when used for recycling.

The dosage of powdered warm‑mix additive is 3‑5% by weight of asphalt, which shall be directly fed into the mixing plant. The dosage of liquid warm‑mix additive is 0.3‑0.4% by weight of asphalt, which shall be directly added into the asphalt tank.