Results 11 to 20 of about 870 (178)
Clays for Low-Carbon Cements: Overview, Progress, and Challenges. [PDF]
Glob ChallThis review provides a critical overview of recent developments of activated clays to function as artificial pozzolans. After a thorough description of the clays that yield good pozzolanic performances, selected examples are given on thermal and mechanical activations. Chiefly, general correlations are extracted from reported data despite its scattered
Koufany I +4 more
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Studying the compressive strength, permeability and reinforcement corrosion of concrete samples containing silica fume, fly ash and zeolite [PDF]
Journal of Structural and Construction Engineering, 2021 Reinforced concrete is the most commonly used construction material. The durability of reinforced concrete mostly depends on the surrounding environmental and exposure conditions such as carbonation, corrosion, and freezing and thawing.
Mahmood Naderi +2 more
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Facta Universitatis. Series: Architecture and Civil Engineering, 2023 Growing awareness about the influence of buildings on the environment has resulted in a need for more ecologically friendly buildings made of inexpensive but long-lasting construction materials.
Oluwaseun Afolabi Oni, Chinwuba Arum
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Study of excavated clays with kaolinite and dickite as pozzolanic materials
Dyna, 2022 In the present study, samples of excavated waste clays were thermally activated at 550 °C and 650 °C, these clays with low kaolinite content and presence of dickite have a limited industrial exploitation but are widely availability in developing ...
Hernan Yanguatin +2 more
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Is the clay "exchange capacity" concept wholly applicable to pozzolans?
Materiales de Construccion, 2004 One of the most characteristic properties of clays is their "cation exchange capacity", otherwise known as their "exchange capacity ". The research reported in this article shows that for various reasons some natural and artificial pozzolans exhibit this
R. Talero
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Effect of three natural pozzolans in portland cement hydration
Materiales de Construccion, 2003 Natural pozzolans have been used since ancient times and continues to be used today. The chemistry and morphological composition of natural pozzolans and their particle size distribution allows classifying them as more or less reactive pozzolan.
V. Rahhal, R. Talero
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Journal of Civil Engineering and Management, 2011 In the present study two pozzolanic materials are used, Metakaolin (MK) and Fly Ash (PFA), as binary and ternary partial replacement binders with Portland cement (PC) to investigate their effect on standard consistence and setting times of paste.
David Snelson +2 more
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Evaluation of the Pozzolanic Activity of Glass Powder in Three Maximum Grain Sizes
Materials Research, 2021 The addition of pozzolans has a potentially important role in the cement industry since using waste from other industries has important environmental benefits, including reduced CO2 emissions from cement production.
Alexandre Lopes Borges +5 more
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Evaluation the pozzolanic reactivity of sonochemically fabricated nano natural pozzolan
Ultrasonics Sonochemistry, 2012 Natural pozzolans are appropriate supplementary cementitious materials in cement and concrete industry. A simple sonochemical method was developed to synthesize nanostructures of natural pozzolan. Chemical composition, crystallinity, morphology and reactivity of the natural pozzolan samples were compared before and after the sonochemical process, by ...
Azadeh, Askarinejad +2 more
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Physical properties and reactivity of pozzolans, and their influence on the properties of lime–pozzolan pastes [PDF]
Materials and Structures, 2010 This paper studies how pozzolan properties including particle size, specific surface, chemical and mineral composition, amorphousness and water demand, affect their reactivity as well as the strength of lime–pozzolan pastes. Reactivity was evaluated with chemical, mechanical and mineralogical methods.
WALKER, ROSANNE, PAVIA, SARA
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