High-performance pavement rehabilitation, cold recycling, and emulsion spraying systems manufactured by HEM Group.
Decoding global demand, environmental mandates, and technical breakthroughs in cold-application bituminous paving across international infrastructure networks.
The global road maintenance and construction sector is experiencing a structural paradigm shift driven by stringent carbon mitigation policies, escalating energy costs, and the urgent need for cost-effective pavement rehabilitation. Traditional Hot Mix Asphalt (HMA) processes require elevated temperatures ranging from 150°C to 180°C, generating substantial greenhouse gas emissions, thermal segregation risks, and elevated operational overheads.
In contrast, Cold Tar Mix Solutions and modern modified emulsion/foamed bitumen technology allow for room-temperature aggregate blending and ambient-temperature laying. As global municipal agencies and highway concessionaires push toward Net-Zero carbon goals, sourcing from qualified China cold tar mix manufacturers and suppliers has become a vital strategic imperative for international procurement teams.
Modern Cold Mix formulations—specifically polymer-modified bitumen emulsions, cutbacks, and foamed asphalt systems—have eliminated the historically poor early-stage stability associated with legacy cold mixes. Today's advanced cold patch and cold mix binders deliver immediate workability, superior moisture resistance (ASTM D1075 compliance), and rapid curing kinetics.
When combined with specialized equipment such as Cold In-Place Recyclers (CIPR) and intelligent bitumen emulsification plants, cold tar mix technology delivers up to a 50% reduction in total life-cycle carbon footprints while providing equivalent structural layer coefficients for base and binder courses.
Founded by Chang'an University professors in 1998, HEM Group combines deep mechanical dynamics research with world-class machinery production.
HEM Group was founded in 1998 by a distinguished panel of professors from Chang'an University—China's leading institution for highway engineering and machinery development—alongside veteran industry experts. Originally established as Xi'an Hongda Communications Technology Co., Ltd., it stands as the earliest high-tech enterprise dedicated to independent design and research of road building machinery in China.
In 2006, the Shaanxi Provincial Department of Science and Technology recognized the group as an official "High-tech Enterprise". Over two decades of rigorous mechanical dynamics research, hydraulic transmission tuning, and CAN-bus digital control development have yielded dozens of patents, forming the foundation of our high-performance equipment lineup.
Understanding the interaction between binder emulsification, aggregate grading, and heavy mechanical compaction.
Cold tar mix and cold asphalt patching rely on precise emulsification where high-viscosity bitumen is dispersed into aqueous phases via high-shear colloid mills. Modern cationic emulsifiers (such as alkyl diamines) ensure chemical adhesion to acidic aggregates (granite, basalt), preventing premature stripping under heavy traffic loads.
Achieving structural integrity without high-temperature compaction requires an optimized dense-graded or open-graded aggregate matrix. Sieve sizing, filler content, and moisture optimization allow cold mix formulations to maintain stockpile longevity (up to 24 months) while providing rapid strength development upon compaction.
Equipment performance directly dictates road life. Specialized Cold In-Place Recyclers (CIPR) mill degraded pavement, inject controlled micro-dosages of emulsified binder or foamed bitumen, thoroughly homogenize the mixture, and re-pave the layer in a single continuous process—drastically lowering supply chain friction.
From aggregate crushing to precision bitumen spraying, explore our complete machinery manufacturing footprint.
Our surface treatment machinery ensures optimal bonding and waterproof seals across municipal and highway projects. Key solutions include:
For structural sub-base rehabilitation and material reprocessing, HEM Group engineers heavy-duty machinery tailored for tough terrains:
Providing seamless export operations, international logistics management, and localized field technical support.
Established in 2017, HME TOP Machinery Equipment Co., Ltd. oversees all global commerce operations. We manage export documentation, multimodal maritime/overland logistics, customs clearance, and port handling to minimize lead times for international contractors.
We maintain active distribution networks, spare parts warehouses, and technical service teams across key regions including Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka, ensuring prompt on-site assistance.
All machinery and emulsification plants strictly comply with ISO9001 quality standards, CE safety certifications, and relevant international highway authority benchmarks (AASHTO, EN, and ASTM standards for bituminous paving equipment).
Our equipment portfolio has been successfully deployed across diverse geographic environments including India, Sri Lanka, Indonesia, Nigeria, South Africa, Eritrea, Mozambique, Congo, Australia, Fiji, Bolivia, and beyond. Whether operating in high-altitude mining sites or tropical road expansion projects, HEM Group machinery guarantees rugged performance and long service life.
Pioneering smart machinery, IoT telemetry, and bio-based binder compatibility for sustainable infrastructure.
Real-time telemetry integration across CIPR units and bitumen distributors. Remote monitoring of spray pressure, aggregate metering ratios, oil-to-water emulsion balances, and GPS paving tracking optimizes operational yield and minimizes material waste.
Engineered fluid delivery systems designed to seamlessly process bio-derived cold tar substitutes, crumb-rubber modified bitumen (CRMB), and high-polymer emulsions without nozzle clogging or thermal degradation.
Collaborative R&D efforts focusing on semi-autonomous road widening, self-guided Chip Spreaders, and automated screed level controls to enhance operator safety and paving precision on multi-lane highways.
Technical clarity and procurement guidance for municipal engineers, equipment buyers, and contractors worldwide.
Cold Tar Mix historically referred to cold-applied coal tar or bitumen mixtures blended with light solvents or cutbacks. Modern eco-friendly cold tar mix technology utilizes engineered polymer-modified bitumen emulsions or foamed asphalt.
Cold Patch Asphalt is a pre-mixed, baggable or bulk-stockpiled material designed for localized pothole repairs and utility cut restoration without heating.
Cold In-Place Recycling (CIPR) refers to an automated structural rehabilitation methodology where specialized machines (CIPR units) pulverize existing pavement, mix the reclaimed asphalt pavement (RAP) with emulsified binders or foamed bitumen in-situ, and re-lay the recycled base layer continuously.
China possesses the world's largest high-grade highway network, driving continuous field testing and technological iteration. HEM Group brings unique academic rigor—founded in 1998 by Chang'an University professors—to mechanical and hydraulic engineering. Purchasing directly from leading China suppliers offers high performance-to-cost ratios, robust customization capabilities (OEM/ODM), fast lead times, and comprehensive 24/7 technical backup.
Cold Mix Paving eliminates burner fuel costs associated with asphalt plant heating, cuts transport fuel by allowing on-site stockpiling or in-situ recycling, reduces thermal equipment wear, and eliminates waiting time for asphalt to cool before opening roads to traffic. Life-cycle total cost of ownership (TCO) savings typically range from 20% to 40%.
Through HME TOP Machinery Equipment Co., Ltd., we provide complete end-to-end export support including customs clearance, containerized or Ro-Ro logistics, on-site machinery assembly, and operator training. We maintain regional service hubs and spare parts repositories in Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka to guarantee minimum operational downtime.
Yes. Our modified asphalt plants, emulsification units, and bitumen distributors feature heavy-duty positive displacement pumps, specialized shear homogenizers, and anti-clog spraying systems specifically engineered to process SBS-modified, SBR-latex, and crumb-rubber modified asphalt emulsions seamlessly.
Depending on ambient humidity, temperature, and emulsifier chemistry (rapid setting vs. slow setting), initial compaction allow traffic flow within 1 to 4 hours. Structural cohesion and final cure strength (matching or exceeding conventional asphalt base layers) develop over 7 to 28 days as water fully evaporates from the compacted layer.
Selecting the ideal bitumen distributor depends on daily square-meter targets and chassis payload limits. Our intelligent bitumen distributor lineup ranges from compact 4,000-liter truck-mounted units suitable for narrow municipal roads to 16,000-liter heavy-duty distributors with telescoping spray bars (up to 6 meters width) designed for major highway construction.
Clients can submit technical specifications, aggregate samples, or operational parameters directly to our engineering division. Our Chang'an University-backed R&D team conducts mechanical load simulations and custom-configures engine emissions standards (Tier 3/Stage V), hydraulic circuits, screed extensions, or mining attachments to meet exact site demands.
Explore additional direct factory solutions engineered for durable road building, aggregate processing, and surface treatment.
HME Machinery