Explore our premium factory-direct heavy road maintenance machinery and material handling systems engineered for maximum durability and seamless site integration.
Founded in 1998 by a distinguished collective of academic professors from Chang'an University—China's premier institution for highway engineering and transportation infrastructure—HEM Group (originally established as Xi'an Hongda Communications Technology Co., Ltd.) stands as a pioneer in intelligent road construction and pavement maintenance chemistry. For over two decades, our institution has bridged the gap between theoretical rheological research and heavy industrial application.
In 2006, our commitment to technological independence was recognized by the Shaanxi Provincial Department of Science and Technology, officially designating HEM Group as a national "High-Tech Enterprise." Our dedicated export arm, HME TOP Machinery Equipment Co., Ltd. (est. 2017), streamlines international technical exchange, facilitating direct global access to advanced OEM Pothole Mix formulations, polymer modified bitumen solutions, and precision road repair machinery.
Modern highway infrastructure is subject to unprecedented stress due to escalating global freight volumes, climate-induced freeze-thaw volatility, and aging pavement foundations. Potholes are not merely aesthetic pavement defects; they represent structural failures resulting from moisture infiltration into sub-base layers combined with dynamic vehicle loading. Worldwide municipal authorities and highway concessions spend billions annually on reactive patching, yet conventional cold-mix remedies frequently fail within 30 to 90 days.
Municipalities utilizing low-grade repair mixes report a repeat-patch rate exceeding 65% per season. OEM high-viscosity mixes reduce lifecycle intervention costs by over 40% over a 5-year pavement horizon.
Cold-application OEM mixes eliminate the need for heavy heating diesel units on site, cutting operational localized greenhouse gas (GHG) emissions by up to 75% per cubic meter repaired.
Packaged in hermetically sealed 25kg bags or bulk totes, OEM mixes offer a shelf life of up to 24 months, enabling rapid municipal emergency deployment during winter thaws.
As a leading OEM factory supplier, our Chang'an University-backed laboratory customizes bituminous matrices according to specific climatic zones, aggregate mineralogy, and load spectrums. Below is the technical breakdown of our flagship high-performance cold patch formulations:
| Performance Indicator | Standard Cutback Mix | HEM Group OEM Reactive Polymer Mix | Testing Standard Method |
|---|---|---|---|
| Marshall Stability (kN) | 3.5 - 4.8 | > 9.5 (Hot-Mix Equivalent) | ASTM D6927 |
| Water Immersion Stripping Resistance | < 75% Aggregate Retention | > 98% Chemical Bond Retention | AASHTO T195 / ASTM D4867 |
| Application Temperature Range | 5°C to 35°C | -25°C to 50°C (All-Weather) | EN 12697-22 |
| VOC Emissions (g/L) | High Volatile Content (>150) | Near-Zero Eco-Matrix (<10) | EPA Method 24 |
| Traffic Reopening Time | 2 to 6 Hours (Slow Set) | Immediate (Compaction by Traffic) | In-Situ Telemetry |
Different global geographies demand tailor-made asphalt repair formulations. As an established OEM factory supplier exporting to over 60 countries across Asia, Africa, Eastern Europe, and South America, we adapt our binder technology to localized challenges:
In regions like Northern Europe, Russia, and High-Altitude Asia, micro-cracks expand rapidly via ice lens formation. Our sub-zero OEM formulation incorporates low-glass-transition SBS polymers that retain elasticity down to -30°C, preventing brittle fracture under heavy studded tire impact.
Across Southeast Asia and Equatorial Africa, water-filled potholes present severe adhesion failure risks. Our wet-surface active mix contains silane coupling agents that displace water molecules from quartz and basalt aggregates, creating a hydrophobic covalent bond even when submerged during application.
Industrial zones carrying heavy axle loads (e.g., container ports and mining haul roads) demand extreme rutting resistance. We fortify our mix with recycled aramid micro-fibers, establishing a three-dimensional tensile matrix inside the patch that distributes wheel load vectors horizontally.
Aviation aprons and high-speed motorways cannot tolerate Foreign Object Debris (FOD) or extended lane closures. Our ultra-fast curing OEM mix utilizes thermosetting resins, enabling full structural shear strength within 15 minutes of mechanical plate compaction.
Pothole mix performance relies heavily on proper excavation, surface cleaning, and mechanical compaction. HEM Group offers a total system approach—combining custom chemical supply with world-class road engineering equipment built in our 5000+ m² production base.
Utilizing our precision OEM Road Milling Machines, distressed pavement edges are cut vertically to establish clean 90-degree mechanical keyways, preventing patch boundary disintegration.
Our Intelligent Bitumen Distributors apply computerized polymer emulsion tack coats to trench walls, guaranteeing optimal shear-bond strength between old and new asphalt interfaces.
Partnering our compact steel drum rollers with slurry seal pavers ensures void ratios within the patch are reduced below 4%, sealing out future water ingress permanently.
As global decarbonization targets accelerate, the road engineering industry is undergoing a paradigm shift toward bio-based chemistry, self-healing material matrices, and automated maintenance logistics. HEM Group's Chang'an University joint R&D lab is leading the following advancements:
Replacing petroleum-derived cutback solvents with modified bio-oils extracted from agricultural side-streams, reducing product embedded carbon by 85% while improving binder penetration values.
Integrating polymeric microcapsules filled with rejuvenator agents into our OEM cold mix. Micro-cracks trigger capsule rupture under traffic vibration, automatically resealing fissures in-situ.
Incorporating passive RFID and thermal sensors directly into bulk patch mixes, communicating real-time structural health and moisture content directly to municipal Smart City dashboards.
With over 20 years of OEM customization expertise, specialized technical support teams, and established distributor hubs across Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka, we guarantee unmatched reliability.
Our machinery and road material solutions are trusted by leading international contractors and public works departments globally:
Standard retail cold patches utilize generic cutback asphalt solutions designed solely for basic residential driveways, leading to rapid water stripping on high-traffic roads. Our OEM factory formulations are custom-engineered for your local aggregate geology, expected vehicle axle loads, and regional climate variations. We fine-tune binder viscosity, polymer cross-linking levels, and aggregate gradation curves (ASTM C136) to ensure permanent structural performance matching hot-mix asphalt (HMA).
Yes. Our specialized wet-surface OEM chemistry incorporates cationic emulsifiers and silane adhesion promoters that actively displace water molecules from the surface of aggregates. This enables direct application into water-filled potholes during heavy rain or freezing temperatures down to -25°C without compromising bond integrity or causing boundary unraveling.
When stored in our heavy-duty, UV-inhibited hermetic 25kg bags or 1-ton super sacks, our OEM cold patch mix maintains full workability for up to 24 months in outdoor stockpiles. No special heating or climate-controlled warehousing is required prior to placement.
For small municipal repairs, standard mechanical plate compactors or hand tampers are fully sufficient. On high-speed highways or wide trenching repairs, using small steel drum rollers (such as our 1-ton steel drum models) accelerates structural aggregate interlocking. In emergency interventions, immediate compaction under normal traffic tires is also achievable.
We provide complete turnkey OEM services including customized bag artwork, multilingual technical safety data sheets (MSDS/SDS), localized testing compliance documentation (CE, ASTM, EN standards), and flexible containerized shipping logistics directly from our factory export port.
For optimal long-term pavement lifecycle performance, we recommend pairing our OEM repair materials with an integrated equipment fleet: a cold road milling machine to cut square vertical patch edges, an intelligent bitumen distributor for tack coating, and a slip-form or micro-surfacing paver for final seamless wearing-course leveling.
Explore our complete range of specialized equipment engineered to support municipal maintenance, mining operations, and large-scale highway rehabilitation projects globally.
HME Machinery
