ConBlock CDA is designed to permanently waterproof and protect concrete structures, such as: bridge and highway structures, tunnels and trenches, building foundations, garage and parking structures, below-grade precast structures, wastewater treatment plants, sewer pipes, manholes and water containment tanks.
NSF/ANSI/CAN 61 certified for use in drinking water structures.
ConBlock CDA is a liquid Permeability Reducing Admixture (PRA) for waterproofing concrete. The molecules are fast-reacting, allowing performance to be realized immediately. Due to the tightening of the void space, concrete bleeding is reduced, allowing finishing operations to occur more quickly. After 21 days at 200 psi (CRD-C48) water did not pass through the concrete. ConBlock CDA’s waterproofing properties allow it to be suitable for use in hydrostatic (PRAH) and non-hydrostatic (PRAN) installations.
DO NOT SUBJECT CONBLOCK CDA TO FREEZING TEMPERATURES BEFORE USE.
| DESCRIPTION | ConBlock CDA |
|---|---|
| Color | Milky White |
| Odor | None |
| Density | 9.1–9.5 lbs./gal |
| pH | 6.0–8.0 |
| Solids | 21.0–24.0% |
| VISCOSITY | <50 Centipoise (CPS) |
| STANDARD TEST METHOD | CONBLOCK CDA RESULTS VS. REFERENCE |
| CRD-C48 Permeability of Concrete | 96% reduction, 21 days |
| ASTM C39 Compressive Strength of Concrete | >10% increase after 3 days; >10% increase after 90 days |
| ASTM C666 Freeze-Thaw Durability | Relative Durability Factor of 99% in 300 cycles |
| ASTM C1585 Measurement of Rate of Absorption of Water by Hydraulic Cement Concretes | 16% reduction after 90 days |
| ASTM C157 Length Change of Hardened Hydraulic-Cement Mortar and Concrete | 23% reduction after 56 days |
| ASTM C1260 Determining the Potential Alkali-Silica Reactivity of Aggregates | 20% reduction after 28 days |
