Water-resistance properties of high-belite sulphoaluminate cement-based ultra-light foamed concrete treated with different water repellents

The high water absorption (Wv) of FC, especially ultra-light FC (ULFC), tends to increase the structure burden, reduce the strength, reduce the thermal and sound insulation performance, and make the frost resistance deterioration, which limits its wide development in prefabrication insulation panel industry. In order to effectively reduce the WV at varied water soaking time of ULFC, four types of powdery water repellents (PWR) including calcium...