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  2. Engineers Just Made Concrete 30% Stronger. The Secret ... - AOL

    www.aol.com/engineers-just-made-concrete-30...

    Eliminate coffee waste, curtail sand extraction, and make concrete stronger? That's a win-win-win.

  3. Properties of concrete - Wikipedia

    en.wikipedia.org/wiki/Properties_of_concrete

    The ultimate strength of concrete is influenced by the water-cementitious ratio (w/cm), the design constituents, and the mixing, placement and curing methods employed.All things being equal, concrete with a lower water-cement (cementitious) ratio makes a stronger concrete than that with a higher ratio. [2]

  4. Spent coffee grounds could make concrete stronger - AOL

    www.aol.com/news/spent-coffee-grounds-could...

    Coffee grounds could be used as an ingredient to make concrete stronger and greener, according to researchers at RMIT University in Melbourne, Australia.

  5. Cement - Wikipedia

    en.wikipedia.org/wiki/Cement

    This cement can make concrete for floor slabs (up to 60 m square) without contraction joints. White blended cements may be made using white clinker (containing little or no iron) and white supplementary materials such as high-purity metakaolin. Colored cements serve decorative purposes. Some standards allow the addition of pigments to produce ...

  6. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    A single concrete block, as used for construction. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. . Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material

  7. Column/Martin: Who knew shrimp could make cement stronger ...

    www.aol.com/news/column-martin-knew-shrimp-could...

    New research shows that adding shrimp shells to cement makes it stronger and more environmentally friendly. How did we come up with this combo?

  8. Water–cement ratio - Wikipedia

    en.wikipedia.org/wiki/Water–cement_ratio

    A good concrete must be therefore prepared with as little water as possible, but with enough water to hydrate the cement minerals and to properly handle it. A lower ratio leads to higher strength and durability, but may make the mix more difficult to work with and form.

  9. Engineers Just Made Concrete 30% Stronger. The Secret ... - AOL

    www.aol.com/lifestyle/engineers-just-made...

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