In modern civil engineering and pavement maintenance, Cold Asphalt Premix has evolved from a temporary patching alternative into a high-performance, permanent structural paving material. Unlike traditional Hot Mix Asphalt (HMA), which demands heavy thermal energy, specialized heating plants, and narrow operational weather windows, OEM Cold Asphalt Premix leverages advanced chemical emulsification, reactive resin polymer additives, and targeted aggregate gradations to perform repairs under extreme environmental conditions (-40°C to +60°C, under submerged water conditions, and without compaction machinery requirements).
As leading OEM Cold Asphalt Premix suppliers and turnkey equipment manufacturers, our R&D framework combines high-grade modified bitumen matrices with specialized surfactants, anti-stripping agents, and reactive catalysts. This delivers exceptional Marshall stability, high tensile strength ratio (TSR), and superior resistance to rutting and fatigue stripping.
| Performance Parameter | OEM Cold Asphalt Premix (Reactive Polymer) | Traditional Hot Mix Asphalt (HMA) | Cutback Bitumen Cold Mix |
|---|---|---|---|
| Application Temperature Range | -30°C to +50°C (All-weather) | 140°C to 170°C (Thermal sensitive) | 0°C to +30°C |
| Storage Life (Sealed Bag/Bulk) | Up to 24 Months (100% active binder) | Immediate use required (Hours) | 3 to 6 Months |
| Water Submersion Adhesion | Passed (>95% film retention) | Moderate (Prone to stripping when wet) | Poor (<75% retention) |
| VOC Emissions & Eco-Impact | Zero/Low VOC (Eco-Emulsion chemistry) | High Carbon Footprint & Thermal Fumes | High Solvents (Environmentally hazardous) |
| Traffic Opening Time | Immediate upon compaction | Requires cooling to <50°C | 24–48 hours curing required |
Custom OEM cold asphalt premix formulations must address specific regional stress profiles, aggregate mineralogy, and climatic variables. Our factory specializes in tailoring binder chemistry to the following localized operational needs:
Designed for urban municipal authorities and highway management firms needing rapid deployment during continuous rainfall, freeze-thaw cycles, and sub-zero winter spells. The displacement of water from the pothole base is guaranteed through organo-silane coupling agents inside the binder formulation.
Following gas, water, or fiber-optic cable trenching, compacting hot asphalt in tight narrow cuts is inefficient. OEM cold patch premix allows quick layer-by-layer compaction, matching surrounding structural modulus and preventing reflective cracking along joint seams.
Under heavy wheel loading (EAL > 10^7), standard cold mixes shear. Our polymer modified SBS/SBR cross-linked premix delivers immediate Marshall stability (>11 kN) post-compaction, guaranteeing non-rutting performance under heavy aircraft loading and container forklift traffic.
Where transporting hot bitumen across long distances is economically impossible, our bagged or bulk-stored OEM cold asphalt premix offers up to 2 years of shelf stability, ensuring remote mountain roads, island ports, and mining haul routes maintain zero operational downtime.
Driven by global decarbonization mandates and AI-assisted material science, our factory R&D center actively advances chemical binder synthesis. Below is our decade technical roadmap for next-generation cold mix systems:
Incorporating moisture-reactive polyurethane prepolymers. When applied in rain or sprayed with ambient water, the chemical binder accelerates cross-linking, curing to 100% full strength within 60 minutes.
Replacing petroleum-derived flux oils with modified bio-derived lignin and plant oil derivatives, achieving negative net carbon emissions during chemical formulation without sacrificing structural tensile strength.
Integrating nano-encapsulated healing fluids within the aggregate matrix. As micro-cracks form under mechanical fatigue, capsules rupture to automatically seal micro-fissures, extending pavement life by over 300%.
HEM Group was founded by a group of professors from Chang'an University (China's premier university for highway engineering and machinery) and leading road construction industry experts in 1998, originally established as Xi'an Hongda Communications Technology Co., Ltd. It stands as the earliest high-tech company focusing on independent research and design of road construction equipment and road chemical materials in China.
In 2006, the company was officially recognized as a "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology, accumulating dozens of invention patents across mechanical dynamics, engine power matching, hydraulic transmission, digital electronic control, and chemical asphalt modification.
To accelerate international market access, in 2017 the group established its dedicated export sales entity: HME TOP Machinery Equipment Co., Ltd., managing global logistics, custom OEM client projects, and field technical support.
State-of-the-art automated chemical reaction kettles, precise mass flow meter liquid dosing, and automated multi-layer moisture-proof bagging assembly lines ensure reliable bulk supply.
Unmatched single-source ecosystem: We manufacture both the high-grade cold patch materials AND the machinery (milling machines, asphalt distributors, pavers, chip sealers, and recyclers).
Established regional service centers and spare parts stock warehouses in Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, Sri Lanka, and beyond.
Our OEM cold asphalt premix and modification agents are strictly certified against global engineering standards:
We provide full white-label OEM services for international distributors, brand owners, and construction conglomerates:
To ensure seamless application of cold mix asphalt, slurry seals, chip seals, and structural paving, our factory supplies fully integrated heavy equipment built with advanced hydraulic and digital control systems:
Our machinery and technical solutions are deployed across 60+ countries (including India, Sri Lanka, Indonesia, Nigeria, South Africa, Eritrea, Mozambique, Congo, Australia, Fiji, Bolivia, etc.), supported by world-class component partners:
Focusing on high-end road maintenance equipment, hydraulic dynamics, engine matching, and digital control.
Wheel loaders, compact excavators, backhoe loaders, and graders deployed worldwide for foundation site prep.
Asphalt mixing plants, pavers, chip sealers, road rollers, milling machines, and cold recyclers.
HME Machinery
