GS E&C to Test All Ready-Mixed Concrete Plants to Ensure Quality

Pre-delivery testing for ready-mixed concrete plants set to supply cold-resistant concrete
Proactively preventing quality risks

GS E&C said on November 10 that it will conduct pre-delivery performance tests at ready-mixed concrete plants scheduled to supply cold-resistant concrete to its construction sites during the winter.

GS Construction employees conduct a performance test on cold-resistant concrete. GS Construction

Going beyond the conventional approach of checking quality after concrete is delivered to a site, GS E&C will directly verify the performance of concrete produced at each ready-mixed concrete plant before delivery. Only plants that meet its quality standards will be allowed to supply the concrete.

In winter, concrete can freeze, compromising the quality of structures in which it has been poured. To prevent this, construction sites have used tents and hot-air blowers, but these measures have been limited in their ability to prevent schedule delays and ensure consistent quality.

GS E&C is therefore expanding the use of cold-resistant concrete, which can achieve stable strength in subzero temperatures without special equipment. The technology uses early-strength cement, which gains strength faster than ordinary cement, along with special additives. Covering the concrete with plastic sheeting alone can keep it from freezing and allow it to reach the required strength.

The main items assessed include ▲the concrete's basic properties ▲whether it sustains frost damage at subzero temperatures ▲and evaluations of concrete strength.

A GS E&C official said, "Because it is important for cold-resistant concrete to achieve stable early strength in low-temperature environments, it is essential to verify the performance of each production plant in advance. We will use GS E&C's in-house research and testing capabilities to proactively manage concrete quality risks and continue building safe, reliable structures even in winter."

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