HYDROCEM CR is a crystalline capillary cementitious waterproofing mortar composed of Portland cement, treated silica sand, and a blend of active chemical additives. It is designed for waterproofing concrete and cement-based structures by forming crystals within the capillaries, making the substrate permanently watertight. HYDROCEM CR becomes an integral part of the concrete, ensuring long-term durability and strength. It is ideal for water tanks, swimming pools, reservoirs, industrial plants, parking decks, and concrete roofs. Non-toxic and safe for potable water applications, it provides outstanding resistance to freeze-thaw cycles, deicing salts, and chemical attacks, while shielding the structure from corrosion and leakage.
Hydrocem CR is mixed with water to a creamy slurry and applied in two coats to a clean, damp concrete surface with an open capillary system.
Summary of the method in the Hydrocem Cr Technical Data Sheet. Always follow the full TDS on site.
| Standard | Title | Referenced for |
|---|---|---|
| ASTM C109 | Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube Specimens) | Compressive strength 42 N/mm² at 28 days |
| ASTM C348 | Standard Test Method for Flexural Strength of Hydraulic-Cement Mortars | Flexural strength 10 N/mm² at 28 days |
| BS EN 12390 | Testing hardened concrete | Water resistance at 5 bar: pass, positive and negative pressure |
| ASTM E96 | Standard Test Methods for Water Vapor Transmission of Materials | Water vapor permeability <1.0 g/h/m² |
Standards and test methods as referenced in the Hydrocem Cr Technical Data Sheet. Values in the TDS are typical laboratory results under standard conditions.
When applied, its active chemicals combine with the free lime and moisture in the concrete’s capillary voids to form an insoluble crystalline structure. The crystals fill pores and minor shrinkage cracks while still letting the concrete breathe.
Yes. The TDS states it is non-toxic and can be used for potable water tanks.
Apply in two coats; about 2.00 kg/m² of powder gives a cured layer with a minimum thickness of 1 mm. Coverage is approximate and depends on site conditions.
Yes. It passed water resistance at 5 bar under both positive and negative pressure per BS EN 12390, and the TDS states it can be used for dual-sided waterproofing.
Store in a dry, covered shed between 10°C and 25°C. Shelf life is 12 months from production in unopened original 20 kg bags.
