Results 21 to 30 of about 913 (181)
Effect of natural pozzolan on concrete durability
Pressacademia, 2017 Sulfate attack and its effects are important from both scientific and industrial viewpoints. It is perceived that cements containing pozzolan have better performance in sulfate solutions, since the pozzolanic reactions reduce the quantity of calcium hydroxide and increase calcium silicate hydrate.
MERİDA, Ahcene, KHARCHİ, Fattoum
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Natural Pozzolans a Comparative Study: A Review
IOP Conference Series: Materials Science and Engineering, 2020 Abstract Exploitation of Natural Pozzolans (Calcined Clay, Calcined Shale & Metakaolin) as Supplementary Cementitious materials (SCMs) for mortar and concrete has attended goodish observance in last decades. In this content the NP used in vast range in partial substitution of cement in concrete and mortar, and due to its pozzolanic ...
Ashish Shukla +4 more
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MATEC Web of Conferences, 2017 This paper addresses the feasibility and the efficiency of using Natural Pozzolan and/or Rock flour in Roller Compacted Concrete (RCC) gravity dams. For this purpose, five identical mortar trial mixes were prepared using five different supplementary ...
Husein Malkawi Abdallah I. +2 more
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DURABILITY OF NATURAL POZZOLAN-BASED MORTAR EXPOSED TO SULFATE ATTACK
Journal of Fundamental and Applied Sciences, 2016 Cement is a strategic commodity in the civil engineering for the construction of reinforced concrete structures. But its production generates around 5% of toxic gases such as CO2 responsible for environmental degradation.
L. Laoufi +5 more
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MATEC Web of Conferences, 2018 The benefits of using mineral additive as a partial replacement for cement in heavyweight concrete are discussed. This paper presents the strength development and temperature distribution of concrete using Class F of natural pozzolan (PU) sourced from ...
Van Lam Tang +5 more
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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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Improvement of geotechnical properties of silty sand soils using natural pozzolan and lime
International Journal of Geo-Engineering, 2018 In this study the effect of different amounts of lime and natural pozzolan on geotechnical properties of a silty sand soil has been investigated. To do this, 20 treatments were prepared with adding five lime levels of 0, 1, 3, 5 and 7% (by weight) and ...
Nader Abbasi, Masoud Mahdieh
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Natural pozzolan-based green geopolymer foam for thermal insulation
Journal of Sustainable Construction Materials and Technologies, 2022 The purpose of the current study is to investigate the possibility of volcanic Tuff of Earth of Datça (ED) in Turkey to be used as an aluminosilicate source in the production of a geopolymer foam for thermal insulation.
Leyla Tanaçan, Kübra Ekiz Barış
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Impacto de la utilización de puzolanas naturales ecuatorianas
Revista de Investigaciones en Energía, Medio Ambiente y Tecnología, 2017 The cement industry provides the basic material in the production of concrete; but it is one of the most aggressive productions in relation to the environmental component, emitting large amounts of CO2 in the process. Research using new binders that meet
Cesar Mauricio Jarre Castro +3 more
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The Influence of Water Content on the Fresh and Hardened State Properties of Lime–Pozzolan Grouts
Heritage, 2022 Lime–pozzolan grouts concern a specific type often applied in the restoration of historic structures. Their water content, a crucial factor of their applicability, has a significant impact on their fresh and hardened state properties. In this study, four
Vasiliki Pachta
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