1 Name of the product name WHDF reduced infiltration of concrete cracking agent, also known as WHDF reinforced concrete compacting (crack) agents or WHDF cracking waterproofing agent (referred WHDF). The product of solid and liquid two types: solid gray powder, liquid is creamy white (yellow) liquid. 2 Key Features WHDF Wuhan University of Engineering for the completion of the national "Ninth Five" key research plan a new high-performance concrete "hydraulic high-facing rockfill dam concrete cracking, impermeability and durability studies" and the development of additional agents, can effectively improve the performance of fresh and hardened concrete mechanical properties and deformation properties of concrete with crack, reduced infiltration and function can improve the durability of. The authority of the detection unit and the size of the water and electricity, railways, roads, municipal and other areas of DAB hundreds of applications engineering test: After the incorporation WHDF, concrete compressive strength (10 to 15)%, tensile strength increased (15 ~ 25)%, ultimate tensile value increased (15 to 20)%, the elastic modulus decreased (5-10)%; mercury porosimetry tests showed: down 8% total porosity, permeability grade ≥ S12, freezing and thawing cycles up to 300 times; early heat of hydration of the maximum peak time can be delayed more than 24 hours; early shrinkage value can be reduced more than 30%; slump loss rate decreased more than 30%, the electric flux can be reduced by about 20% . 3 Scope 3.1 concrete water conservancy and hydropower construction in building dams and underground facilities; Concrete 3.2 traffic construction of highways, railways, bridges, piers, and subway tunnels under the sea; 3.3 civilian building coal, basements, kitchens, cast concrete toilet and roof; 3.4 DAB houses in places, walls and other impermeable cement mortar and anti-drift installation of water pipes; 3.5 DAB in the wall material. 4 (solid and liquid WHDF same content) concrete dosage recommended dosage: 1 to 2% of the amount of plastic material; impermeable cement mortar dosage is: 2 ~ 2.5 Kg/m2; mortar dosage of anti-drift : 0.5 ~ 1.5Kg/m2. Specific dosage should be based on actual engineering requirements.