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2. Water–cement ratio - Wikipedia

   en.wikipedia.org/wiki/Water–cement_ratio

   A lower ratio leads to higher strength and durability, but may make the mix more difficult to work with and form. Workability can be resolved with the use of plasticizers or super-plasticizers. A higher ratio gives a too fluid concrete mix resulting in a too porous hardened concrete of poor quality.

3. Concrete - Wikipedia

   en.wikipedia.org/wiki/Concrete

   Design-mix concrete can have very broad specifications that cannot be met with more basic nominal mixes, but the involvement of the engineer often increases the cost of the concrete mix. Concrete mixes are primarily divided into nominal mix, standard mix and design mix. Nominal mix ratios are given in volume of . Nominal mixes are a simple ...

4. Ready-mix concrete - Wikipedia

   en.wikipedia.org/wiki/Ready-mix_concrete

   Ready-mix concrete (RMC) ... In the UK, ready-mixed concrete is specified either informally, by constituent weight or volume (1-2-4 or 1-3-6 being common mixes) ...

5. 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]

6. Self-consolidating concrete - Wikipedia

   en.wikipedia.org/wiki/Self-consolidating_concrete

   Self-consolidating concrete or self-compacting concrete (SCC) [1] is a concrete mix which has a low yield stress, high deformability, good segregation resistance (prevents separation of particles in the mix), and moderate viscosity (necessary to ensure uniform suspension of solid particles during transportation, placement (without external compaction), and thereafter until the concrete sets).

7. Fiber-reinforced concrete - Wikipedia

   en.wikipedia.org/wiki/Fiber-reinforced_concrete

   The amount of fibers added to a concrete mix is expressed as a percentage of the total volume of the composite (concrete and fibers), termed "volume fraction" (V f). V f typically ranges from 0.1 to 3%. The aspect ratio (l/d) is calculated by dividing fiber length (l) by its diameter (d).