YYA special waterproof and anti-seepage slurry and, gray or white powder, is composed of high performance portland cement and sand of 200 mesh, and certain amount of activator and hydration agent. When water is added, a series of oxidation reaction will take place.  The inert ingredients in portland cement will be activated and cement particles disintegrated. The particle, which original size in diameter was 40µm to 60µm, will be change in to 5µm to 15µm. And The pores inside the concrete, which original size in diameter was 500Ǻ to 10,000Ǻ, will be changed less than  4Ǻ, which is equal to the size of a water molecule. In this way, the effect of anti-seepage will be achieved.
 
When cracks take place on the concrete, water will penetrate into the cracks and pores in the concrete, where the active ingredients will be activated, causing the crystal inside the pores to expand. Thus, the balance of inside and outside atmosphere pressure will be achieved, which is a dynamic process, to maintain a continuous sealing effect.  This product can withstand the pressure of 150m water column when used alone on the backside.  
 
Usage: Generally used on the backside of roofs, side walls and floors of underground garages to cure water seepage. YYA特种防水抗渗浆料和背水一喷灵，为灰色粉末或白色粉末，由高性能硅酸盐水泥和200目沙子，加适量的激发剂和水化剂组成，加水后，发生系列氧化反应，激活硅酸盐水泥中 惰性成分，碎解水泥颗粒，把毛细孔通由常的40 µm 到 到到 到 60 µm 改变为5 µm 到 到到 到 15 µm，把混凝土的毛细孔从500Ǻ 到 到 到 10,000 Ǻ 改善为小于4 Ǻ（水分子的直径为4 Ǻ），从而达到防止渗漏的效果。当或其混凝土有裂纹变化是，水会进入裂纹和毛细孔，激活活性物质，造成毛细孔内部的结晶体膨胀，达到内外大气压平衡位置，从而持续达到密封的效果，该过程为动态的过程。单独应用，可以耐背水压150米水柱的压力
 用途:通常用于地下车库顶板,侧墙和地板渗漏的背水面处理.