A study on effects of water repellent on the performance of expanded perlite products

Due to large absorbing water,expanded perlite is limited to apply in the field of building energy-saving.In this paper,effects of water repellent on strength and water absorption of expanded perlite products are studied by selecting different kinds,concentration of absorbing water,and using different hydrophobic treatment.The results show,add composite water repellent to expanded perlite product raw materials by blending mix way can effectively reduce the water absorption rate,at the same time,hydrophobic rate can reach to 98%.This study is helpful to improve hydrophobic properties of perlite products and promote its application in building engineering.