ABOUT ROCK HARD CEMENT
Rock Hard Cement was established in 2015, with its primary objective centred around building a strong distribution network to supply the Caribbean region with quality cement on a consistent basis.
Our plan is to deliver effective solutions to our distribution partners and their customers at an acceptable price with consistent results.
We provide ASTM C1157 blended hydraulic cement in 42.5R and 52.5N types . We supply superior quality cement supported by manufacturer and independent testing certification, along with our own testing and development in precast and ready mix plants in the region.
Rock Hard blended hydraulic cements are produced by blending Portland cement and other cementitious materials like slag, fly ash, silica fume , clay , hydrated lime and other pozzolans . The use of hydraulic cement in ready- mix concrete reduces mixing water and bleeding , improves workability and finishing , inhibits sulfate attack and the alkaline aggregate reaction , and reduces the heat of hydration. Rock Hard Cement offers various types of hydraulic cements which have a lower co2 footprint resulting from our lower clincker content due to the addition of supplementary cementitious materials . The introduction of blended cements reinforces our strong commitment to the industry.
A PROVEN PRODUCT
With cement, consistency is a vital and desired characteristic. As a proven product with consistent results, Rock Hard Cement allows the construction industry to further benefit from improved mixed designs, as well as helping to reduce their overall costs.
TYPES OF USES
- Reinforced Concrete
All strength classes, specially those in the range of C20/25 to C40/50
- Precast Concrete Products
All types of plain concrete precast elements (paving blocks, paving flags, kerb units, masonry blocks, etc) Reinforced and pre-stressed concrete structural elements
- Road Pavements
Bound granular base layers
Concrete Surface Layers
- Unreinforced concrete
- General Purpose Grout
- Sprayed concrete
SPECIAL FEATURES OF CONCRETE MADE WITH THIS CEMENT
- High early strength development
- High strength at all standard ages
- Wide range of uses and high performance even in moderate aggressive environments
- High workability
- Particularly suitable for environmental exposure class XC
SAFETY & PRECAUTIONS
- Precautions Regarding Use
Avoid placing concrete under low temperatures
Provide adequate protection and cure according to correspondent standards
Follow the standard minimum cement content and maximum water/cement ratio
- Environment & Safety
Use proper protective clothing, gloves and eye/face protection equipment
Chromium (VI) reducing agent with two months efficiency period can be added on demand
The production of this cement represents a CO2 emissions reduction
ROCK HARD CEMENT AVAILABILITY
2.0 tonnes of 52.5N Cement
40 bags of 42.5kg per sling - 1.7 tonnes