In 2025, the Laiwu district of Jinan faced the most severe rainy season in recent years. According to official reports from the Jinan Meteorological Observatory and the Shandong Provincial Climate Center, the 2025 flood season began in late June and lasted through early September, with the rainy period extending over 70 days — nearly two weeks longer than the annual average.

More extreme still, mid-July to mid-August saw the most concentrated period of heavy rainfall, with multiple torrential rain events. Among them, the July 20–23 downpour set a historical record, with a maximum hourly rainfall of 103.3 mm. The dual pressure of prolonged water immersion and intense impact posed unprecedented challenges to road structural performance.

[Project Overview]

Under these exceptional climate conditions, Jinan Goodroad New Material Technology Co., Ltd. implemented a road restoration solution based on Flexible Film-Forming Technology for the main factory roads of Laiwu Steel Group.

The technology uses specialty polymer composite resins and bridging modifiers to form a dense film layer with self-healing, waterproof, erosion-resistant, and tear-resistant properties, effectively withstanding heavy-load rolling and extreme weather erosion.

[Performance Under Extreme Conditions]

Throughout the 70+ day rainy season, this road endured torrential rain, water immersion, and continuous heavy vehicle traffic. The results proved that the Flexible Film-Forming Technology performed exceptionally:

Rain erosion resistance: No peeling, loosening, or blistering after prolonged water exposure.

Ponding and mud prevention: The road surface remained smooth and passable after rain, with excellent drainage performance.

Heavy-load resistance: No significant ruts or cracks after hundreds of tons of vehicle traffic.

Dust suppression and environmental protection: Maintained ≥90% dust suppression rate even in high-humidity conditions, enabling green construction.

The project manager commented: “Through such an unusually long and intense rainy season, the road remained stable and reliable, completely exceeding our expectations. Goodroad’s new material technology has truly solved our long-standing road problems.”

[Conclusion]

The success of this Laiwu Steel main road project not only verified the outstanding stability and durability of Flexible Film-Forming Technology in extreme rainy conditions but also provided a replicable high-performance road construction model for heavy-load industries such as mining.

Looking ahead, Jinan Goodroad New Material Technology Co., Ltd. will continue to leverage innovative technology to upgrade industrial infrastructure, ensuring more roads remain “rock-solid” through wind and rain.