ConBlock CDA Red, a liquid amorphous crystal waterproofing admixture, is designed to densify and waterproof concrete structures, such as: below-grade precast structures, wastewater treatment plants, sewer pipes, manholes and water containment tanks (non-potable water).
NSF/ANSI/CAN 61 certified for use in drinking water structures.
ConBlock CDA Red is a liquid Permeability Reducing Agent (PRA) that densifies concrete. When added to Portland cement concrete, the compressive strength is 25% greater than reference concrete after one day; which allows faster handling of concrete. The amorphous silica crystal is 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 Red’s densification properties allow it to be suitable for use in Hydrostatic (PRAH) and non-hydrostatic (PRAN) installations.
DO NOT SUBJECT CONBLOCK CDA RED TO FREEZING TEMPERATURES BEFORE USE.
| Color: | RED |
| Odor: | None |
| Density: | 9.1 – 9.3 lbs/gallon |
| pH: | 5.7 – 8.7 |
| Solids (%): | 14.0 – 16.0 |
| Viscosity: | 500 Centipoise (CPS) Min. |
| STANDARD TEST METHOD | CONBLOCK CDA RED RESULTS VS. REFERENCE |
| CRD-C48 Permeability of Concrete | Coefficient of permeability rating (K)=1.3x 1013 (96% reduction, 21 days |
| ASTM C39 Compressive Strength of Concrete | 25% increase after 1 days; > 10% increase after 28 days |
| ASTM C1585 Measurement of Rate of Absorption of Water by Hydraulic Cement Concretes | 36% reduction after 90 days |
| ASTM C157 Length Change of Hardened Hydraulic-Cement Mortar and Concrete | Dry shrinkage of 0.013% (130 microstrain) after 56 days; 70% less than reference |
| ASTM C1567 Determining the Potential Alkali-Silica Reactivity of Cementitious Materials and Aggregate | 10% reduction after 28 days |
| ASTM C1260 Determining the Potential Alkali-Silica Reactivity of Aggregates | 18% reduction after 28 days |
| ASTM C1760 Bulk Electrical Conductivity of Hardened Concrete | 15% reduction at 1000 Hz |
| BS EN 12390-8 Depth of Water Penetration under Pressure | 36% reduction after 90 days |
