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  2. Modified compression field theory - Wikipedia

    en.wikipedia.org/wiki/Modified_Compression_Field...

    The modified compression field theory (MCFT) is a general model for the load-deformation behaviour of two-dimensional cracked reinforced concrete subjected to shear. It models concrete considering concrete stresses in principal directions summed with reinforcing stresses assumed to be only axial.

  3. American Concrete Institute - Wikipedia

    en.wikipedia.org/wiki/American_Concrete_Institute

    The American Concrete Institute (ACI, formerly National Association of Cement Users or NACU) is a non-profit technical society and standards developing organization. ACI was founded in January 1905 during a convention in Indianapolis. [1] [2] The Institute's headquarters are currently located in Farmington Hills, Michigan, USA. ACI's mission is ...

  4. 3D concrete printing - Wikipedia

    en.wikipedia.org/wiki/3D_concrete_printing

    TU/e Built Environment's Rohaco 3D Concrete Printer being extensively used for Concrete Printing Research. 3D concrete printing, or simply concrete printing, refers to digital fabrication processes for cementitious materials based on one of several different 3D printing technologies. 3D-printed concrete eliminates the need for formwork, reducing material waste and allowing for greater ...

  5. Construction 3D printing - Wikipedia

    en.wikipedia.org/wiki/Construction_3D_printing

    There are several research projects dealing with 3D Construction printing, such as the 3D concrete printing (3DCP) project at the Eindhoven University of Technology, [104] or the various projects at the Institute for Advanced Architecture of Catalonia (Pylos, Mataerial, and Minibuilders). The list of research projects is expanding even more in ...

  6. Reinforcement in concrete 3D printing - Wikipedia

    en.wikipedia.org/wiki/Reinforcement_in_concrete...

    Reinforcement bars are pre-installed, just like in the case of conventionally cast concrete, and the rheology of the concrete is adapted to retain the shape of the slipforming formwork before concrete hydrates enough to sustain self-weight. [14] Concrete facade mullions of varying cross-sections are produced for a DFAB house [15] in Switzerland.

  7. Mohr–Coulomb theory - Wikipedia

    en.wikipedia.org/wiki/Mohr–Coulomb_theory

    Mohr–Coulomb theory is a mathematical model (see yield surface) describing the response of brittle materials such as concrete, or rubble piles, to shear stress as well as normal stress. Most of the classical engineering materials follow this rule in at least a portion of their shear failure envelope.

  8. Watchdog warns credit card companies over devaluing ... - AOL

    www.aol.com/watchdog-warns-credit-card-companies...

    The Consumer Financial Protection Bureau (CFPB) on Wednesday warned that credit card companies devaluing or canceling reward points, cash back or miles rewards programs may be breaking the law.

  9. Compressive strength - Wikipedia

    en.wikipedia.org/wiki/Compressive_strength

    The characteristic strength is defined as the strength of the concrete below which not more than 5% of the test results are expected to fall. [ 16 ] For design purposes, this compressive strength value is restricted by dividing with a factor of safety, whose value depends on the design philosophy used.