Water Reducing Admixture – an agent or super plasticizers that improves workability and maintain consistency of concrete
Waterproofing – integrated type in powder form added during mixing . Render surface in decks, basements and pools water impervious.
Coloring Agent – are pigments or dyes mixed into topping to render/alter color evenly to concrete surface
Surface Sealing Agents – liquid waxes sprayed over the surface that is easily removed after curing. Prevents evaporation of water into a new concrete allowing hydration and seal the pores of concrete surface after it has hardened
Set Inhibiting Agent – in liquid form (applied immediately before pouring of concrete) or powder form (applied directly after pouring). Inhibits the setting of cement paste avoiding bonding to surface aggregates and left exposed for architectural effect.
Dispersal Agents- prevents bleeding of concrete from concrete.
Bonding Agent – either metallic aggregate (bonding thru oxidation and expansion) or synthetic latex emulsion (sprayed or painted to coalesce and bond) to improve the bond between old and new concrete.
Air – Entraining Agent – can be inter-ground during manufacturing of Type I,II and III cement. Enables the concrete to be highly resistant against corrosion.
Gas Forming Agent – develops the potential strength of a concrete
Non-Skid Surfaces - use abrasive material in topping to produced unslippery surface for pavement construction
Hardener – chemical/fine metallic aggregate improve the density of concrete surface subject to impact and wear.
Accelerator – Speeds up the setting of concrete to reduce the whole curing period or for early removal of forms.
Retarder – delays or extend the setting time of concrete especially during hot weather condition (hydration accelerates curing) allowing more time to place, consolidate and finish the concrete.
0 Comment:
Post a Comment