Material Details Determine Success: A Guide to Proper Additive Usage in Track and Sports Court Construction

In the construction of running tracks and sports courts, the use of additives such as thinners and drying agents may seem trivial, but they are crucial to the quality, durability, and safety of the finished surface. Proper additive usage helps improve material workability and adapts to various construction needs. However, improper additive proportions can lead to serious issues, including cracking, powdering, premature aging, and surface delamination.

The Role and Risks of Thinners

Thinners are typically used in oil-based two-component materials, such as Full PU Running Tracks. When too much thinner is added during track construction, it can prevent the material from drying correctly and, after exposure to sunlight, cause the surface to become brittle, leading to delamination and powdering.

In general, the amount of thinner added should be adjusted according to the material’s viscosity and the construction requirements. This proportion is sufficient to improve workability while maintaining the durability of the final surface. However, some workers, seeking convenience during construction, often add excessive amounts of thinner, leading to the aforementioned issues.

Proper Use of Drying Agents

Drying agents (also known as catalysts or curing agents) are commonly used in PU elastic layer materials and spray surface applications. Drying agents not only enhance the strength of the PU elastic layer but also help the material dry in a timely manner, ensuring construction progress. However, overuse of drying agents can cause the material to react too quickly, leading to premature curing during the application process, which can impact both the quality and schedule of the project.

Mock-up sample from training session showing overuse of drying agent — material cured too quickly, resulting in uneven surface and poor adhesion.

For detailed and specific proportions of thinners and drying agents, please feel free to contact us.

Why Professional Supervision is Crucial

These challenges underscore the importance of technical oversight during construction. Without professional guidance, frontline workers may add additives based on convenience rather than compliance, which increases the risk of surface defects. On-site supervision, adherence to manufacturer specifications, and proper training can help teams make informed decisions in real-time, especially when dealing with environmental variables.

Building Better, Smarter

At SSG Sports, we emphasize scientific material usage and strict process control. Every detail — from additive proportions to curing time — directly impacts the final product. As the demand for professional-grade athletic surfaces continues to grow, the industry must move toward more standardized, data-informed construction practices.

The road to performance always starts with what’s beneath your feet — and that begins with the right materials, mixed the right way.