Sungshin Cement Develops 'Rainy Day Concrete' That Withstands Rainy Weather

[Financial News] Sungshin Cement has developed high-performance concrete that can maintain its strength even in rainy conditions. It is gaining attention as an alternative to reduce quality degradation and construction delays in uncertain construction environments due to climate change.
Sungshin Cement announced on the 29th that they verified the performance of 'Rainy Day Concrete' through a demonstration experiment that precisely implemented rainfall conditions of 15mm per hour, in collaboration with their technology research center and affiliate Sungshin Remicon. This figure reflects the upper average of domestic rainfall, serving as a standard to determine whether construction quality is maintained even during actual rainfall.
The technology research center produced an experimental square frame of 1m in width, length, and height, and implemented an artificial rainfall environment through spray nozzles. Rainfall measurement was accurately calculated using an analog rain gauge.
The newly developed Rainy Day Concrete is based on a design standard strength mix of 27 megapascals (MPa) and applies a high-viscosity special chemical admixture to effectively prevent material separation and strength degradation due to rainwater infiltration.
Additionally, the issue of reduced fluidity was also improved. By applying a high-viscosity admixture, it secured a fluidity of over 600mm, achieving work efficiency that allows construction without vibration compaction.
A representative from Sungshin Cement stated, "This technology is a practical example of effectively responding to the increasingly complex construction environment due to climate change," and added, "By ensuring quality concrete even in rainy conditions, it will be possible to reduce process delays and improve the overall quality of construction."

jimnn@fnnews.com Shin Ji-min Reporter