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  2. Alkali–silica reaction - Wikipedia

    en.wikipedia.org/wiki/Alkali–silica_reaction

    Typical crack pattern of the alkali-silica reaction (ASR). The gel exudations through the concrete cracks have a characteristic yellow color and a high pH. The fatty aspect of the exudations imbibing the concrete porosity along the cracks is also a distinctive feature of ASR. The alkali-silica reaction as a chemical cycle process

  3. Sika AG - Wikipedia

    en.wikipedia.org/wiki/Sika_AG

    Sika AG is a Swiss multinational specialty chemical company that supplies to the building and motor vehicle industries, headquartered in Baar, Switzerland. The company develops and produces systems and products for bonding, sealing, damping, reinforcing and protecting.

  4. Waterproofing - Wikipedia

    en.wikipedia.org/wiki/Waterproofing

    In construction, a building or structure is waterproofed with the use of membranes and coatings to protect contents and structural integrity. The waterproofing of the building envelope in construction specifications is listed under 07 - Thermal and Moisture Protection within MasterFormat 2004, by the Construction Specifications Institute, and includes roofing and waterproofing materials.

  5. Fracture mechanics - Wikipedia

    en.wikipedia.org/wiki/Fracture_mechanics

    Concrete fracture analysis is part of fracture mechanics that studies crack propagation and related failure modes in concrete. [17] As it is widely used in construction, fracture analysis and modes of reinforcement are an important part of the study of concrete, and different concretes are characterized in part by their fracture properties. [ 18 ]

  6. Crack spacing of reinforced concrete - Wikipedia

    en.wikipedia.org/wiki/Crack_spacing_of...

    When a reinforced concrete member is put in tension, after cracking, the member elongates by widening of cracks and by formation of new cracks. Figure 1 Formation of internal cracks. Ignoring the small elastic strain in the concrete between the cracks, we can relate the crack width to the strain of the member by:

  7. NYC pledged to clean up the ‘Broadway of the Bronx’ — but it ...

    www.aol.com/nyc-pledged-clean-broadway-bronx...

    The dealers also hawked a menu of other drugs, from crack cocaine to synthetic marijuana. Their illicit wares are also strewn on the pavement, as used syringes and thousands of orange safety caps ...

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