The carbonation of concrete refers to the reaction of CO₂ in the air with concrete.2Chemical reaction occurs between Ca(OH)2 in cement stone and carbon dioxide in the presence of water, forming calcium carbonate and water. The carbonation process is CO22The process of gradually diffusing into the concrete interior. Carbonation primarily affects concrete by: reducing its alkalinity, weakening its protective effect on steel bars, which may lead to corrosion of the steel. Carbonation can also cause concrete shrinkage (carbonation shrinkage), which is prone to produce fine cracks on the concrete surface.

The NELD-CA070 Concrete Carbonation Test Chamber is a specialized equipment developed by Beijing Naierde Company for concrete carbonation tests. The product features a Chinese LCD display, simple operation, full automatic control, and comprehensive performance.