Good News! On April 10, 2025, a complete cluster of high-precision asphalt testers was packed and dispatched in a 20GP container to the Democratic Republic of Congo in Central Africa. This delivery encompasses four categories of professional instruments essential for asphalt material development and road construction quality control, demonstrating LYROAD's comprehensive capabilities as a full-chain service provider in the global asphalt equipment sector.
Shipment Details
The high-precision equipment shipped includes four main categories:
- Asphalt Basic Property Testers: Including the Digital Asphalt Penetration Tester and Automatic Asphalt Softening Point Tester, designed for precise measurement of fundamental physical properties of asphalt binders.
- Pressure Testing Equipment: Featuring the Marshall stability tester with 50kN capacity and adjustable loading rates from 0.5-50mm/min, providing accurate data support for asphalt mixture mechanical performance testing.
- Multi-functional Compaction Testers: Equipped with the Asphalt Gyratory Compactor (adjustable pressure 0-700kPa) and Marshall Electric Compactor (with automated control system and precisely controlled compaction energy), capable of simulating actual road construction compaction processes.
- Simulation Testing Devices: Including the Asphalt Mixture Rutting Tester (testing temperature range 20-80°C, precision ±0.5°C), used to evaluate asphalt mixture's resistance to permanent deformation under high-temperature conditions.
As a "Belt and Road Initiative" participant, LYROAD Machinery delivers high-standard asphalt testers to DR Congo that ensure road construction meets international standards while addressing local environmental requirements. This equipment enhances local testing capabilities and provides crucial infrastructure support, demonstrating LYROAD's comprehensive approach beyond asphalt plants to include the full industry chain from raw materials to technical services, with quality testing equipment forming a cornerstone of the company's global road solutions portfolio.
Asphalt Testing Equipment Q&A
1. What is a Marshall stability test apparatus and how is it used?
The Marshall stability test machine is essential equipment for evaluating asphalt mixture performance. It primarily measures Marshall stability and flow values, two key parameters for assessing an asphalt mixture's resistance to deformation. This testing helps determine the optimal mix proportion of asphalt mixtures, evaluating their deformation resistance, crack resistance, and durability—making it a critical tool for road engineering quality control.
Basic operating procedure:
- Prepare standard-sized asphalt mixture specimens;
- Place specimens in a constant temperature water bath to heat to the specified temperature;
- Position specimens in the Marshall test fixture;
- Apply load at a constant rate through the testing machine until specimen failure;
- Record the maximum load value (stability) and corresponding deformation value (flow).
2. Other asphalt testing equipment in this shipment
- Asphalt Penetration Tester: Measures asphalt hardness by determining penetration depth of a standard needle under specific conditions, essential for grade selection.
- Asphalt Softening Point Tester: Evaluates temperature sensitivity using the ring and ball method, indicating asphalt's transition point from solid to fluid state.
- Multi-speed Marshall Stability Test Machine: Versatile equipment that applies variable loading rates for multiple test types including Marshall stability, CBR, and unconfined compression strength tests.
- Asphalt Gyratory Compactor: Simulates actual road construction compaction processes to prepare asphalt mixture specimens similar to real pavement structures. This equipment can adjust compaction angle, pressure, and rotation cycles to create specimens that closely resemble actual pavement conditions.
- Asphalt Mixture Rutting Tester: Simulates repeated vehicle loads on asphalt pavement to evaluate high-temperature rutting resistance of asphalt mixtures. By testing specimen deformation under standard temperatures, it predicts asphalt pavement durability in actual use.
- Marshall Electric Compactor: Used for standard Marshall specimen preparation through electrically controlled hammering, ensuring consistency and repeatability of specimen compaction density, serving as preliminary equipment for Marshall testing.
