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  2. Types of concrete - Wikipedia

    en.wikipedia.org/wiki/Types_of_concrete

    There are two application methods for shotcrete. dry-mix – the dry mixture of cement and aggregates is filled into the machine and conveyed with compressed air through the hoses. The water needed for the hydration is added at the nozzle. wet-mix – the mixes are prepared with all necessary water for hydration.

  3. Water–cement ratio - Wikipedia

    en.wikipedia.org/wiki/Water–cement_ratio

    The water–cement ratio (w/c ratio, or water-to-cement ratio, sometimes also called the Water-Cement Factor, f) is the ratio of the mass of water (w) to the mass of cement (c) used in a concrete mix: The typical values of this ratio f = w⁄c are generally comprised in the interval 0.40 and 0.60. The water-cement ratio of the fresh concrete ...

  4. 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]

  5. Fiber-reinforced concrete - Wikipedia

    en.wikipedia.org/wiki/Fiber-reinforced_concrete

    Normal concrete contains 19 mm (0.75 in) equivalent diameter aggregate which is 35-45% of concrete, fibers longer than 20 mm (0.79 in) are more effective. However, fibers that are too long and not properly treated at time of processing tend to "ball" in the mix and create work-ability problems.

  6. List of referred Indian Standard Codes for civil engineers

    en.wikipedia.org/wiki/List_of_referred_Indian...

    Indian standard codes are list of codes used for civil engineers in India for the purpose of design and analysis of civil engineering structures such as buildings, dams, roads, railways, and airports. IS: 456 – code of practice for plain and reinforced concrete. IS: 383 – specifications for fine and coarse aggregate from natural sources for ...

  7. Pervious concrete - Wikipedia

    en.wikipedia.org/wiki/Pervious_concrete

    A pervious concrete street in 2005. Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge.

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