CRYSTALLINE ADMIX DSF 315

CRYSTALLINE ADMIX DSF 315 is an integral crystalline admixture powder specifically formulated to interact with concrete capillary pore structures to provide a waterproofing system that is a permanent part of the concrete matrix. CRYSTALLINE ADMIX DSF 315 can be used in above- and below-grade applications. Active chemicals combine with the free lime and
moisture present in the capillary tracts and pores, to form insoluble crystalline complexes. These crystals block the capillaries and minor shrinkage cracks in the concrete to prevent any further water ingress (even under pressure). However, the concrete will still allow the passage of water vapour through the structure (i.e. the concrete will still be able to “breathe”).

CRYSTALLINE ADMIX DSF 315 can be used in all the concrete elements, such as waste treatment facilities, foundations and basements, marine structures, precast concrete, tunnels and subways, dams and water reservoirs, manholes, underground vaults, parking structures, swimming pools, and water containment structures.

• Eliminates or reduces water penetration.
• Interior or exterior waterproofing against high hydrostatic pressure.
• No adverse effect on compressive strength or setting time with Portland cement.
• Easy-to-use powdered material.
  Highly improves chemical resistance.
• Very economical compared to other methods.
• Vapour diffusion in concrete is not blocked.
• Negligible effect on working time, increasing flexibility.

CRYSTALLINE ADMIX DSF 315 can be used in drum-mixed and central-batched concrete applications. It should be added to the initial batching sequence, preferably as the aggregate is being added to the mixing vessel. Concrete should be mixed for a minimum of 8–10
minutes, at normal mixing speed, after all concrete constituents have been batched to ensure thorough dispersion of all materials. CRYSTALLINE ADMIX DSF 315 should not be added to the concrete mixture after the cementitious ingredients have been introduced.

When stored in a dry place in unopened, undamaged original packaging, the shelf life is 12 months.