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Designing Fly Ash Concrete To maintain 28-day Compressive Strength
Fly ash can be used in concrete either as an additive or in-part replacement of cement. The presence of finely divided glassy silica and...


Water for Concrete
Of all the ingredients used to make concrete, water is the cheapest. But it is important that we pay sufficient attention to it. Water...


The importance of aggregates in concrete
Concrete is strong not only because of the cement paste but also because of the relatively inert fine and coarse aggregates that is...

ASTM Standards for Ordinary Portland Cements
ASTM C 150 specifies five types of Portland cements: Type I (GU) Common Portland Cement (or cement for General Use). This is for...


Fibre-reinforced Concrete
Fibers are utilized in cement to manage the cracking characteristics and reduce permeability. The surrounding concrete protects the steel...


Slag and Concrete
Ground Granulated Blast furnace Slag (GGBS) is a by product from the blast furnaces used to make iron. These operate at a temperature of...


Which is better for concrete? Fly Ash or Slag?
The addition of fly ash in concrete gives numerous advantages. These are observed in both fresh and hardened concrete. Briefly it...

DOE Methods of Concrete Mix Design
Concrete mix design is the process of finding the proportions of concrete mix in terms of ratios of cement, sand and coarse aggregates...


What's the benefit of using fly-ash blended cement in concrete?
Interest in blended cements is growing because of its advantages as increased production economy, reduced CO2 emissions and fuel...


Optimising Concrete Mix Designs
Want to optimise your concrete mix design? It may be a rewarding and enriching experience. Read on.
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