Results 11 to 20 of about 4,951,536 (143)
Journal of Civil Engineering and Management, 2012 The study deals with peculiarities of hydration and development of hardening structure as well as durability properties pertaining to composite anhydrite cement pozzolana binder (ACP) with different pozzolana (P).
Jadvyga Žvironaitė +3 more
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Flow of wet natural pozzolana [PDF]
Journal of Physics: Conference Series, 2009 We present experimental results on the flow and stability conditions for natural pozzolana, a natural volcanic sand widely used in concrete production. We measured different angles involved in equilibrium conditions for sand piles and relate them to the flux parameters necessary to produce a silo evacuation.
Medici, Maria Elizabeth +6 more
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Production of a lightweight masonry block using alkaline activated natural pozzolana and natural fibers [PDF]
Construction and Building Materials, 2020 Abstract Lightweight geopolymers are alternative low-carbon footprint building materials with high potential to produce value added products for the construction industry such as low-density masonry units. This work focuses on presenting the development of a new lightweight masonry block using natural pozzolana-based geopolymer mortar, hydrogen ...
David Castañeda +6 more
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Modeling the cementitious effect of the Pozzolana on the compressive strength of concrete
Cogent Engineering, 2018 The natural Pozzolana is a siliceous material (SiO2) that reacts with the calcium hydroxide Ca(OH)2 produced during the hydration period of the cement; this inherent feature increases the cementitious property of the grout and improves the compressive ...
Afif Rahma, Haifaa Jomaa
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Physical effects of natural pozzolana on alkali-activated slag cement
World Journal of Engineering, 2011 The alkali-activated slag (AAS) cement is an interesting building material, confronting to the new economical and ecological challenges. In order to enhance its physical properties in comparison with ordinary Portland cement (OPC), we used natural pozzolana as a mineral addition.
L. Zeghichi, Z. Benghazi
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Properties of lightweight concrete made with crushed natural pozzolana as coarse aggregate
Technological and Economic Development of Economy, 2007 This paper describes a laboratory‐based study examinig the use of natural pozzolana as an aggregate component in lightweight concrete (LWC). A range of conditioning variables, including cement and moisture content, storage period up to one year, was ...
Mohamed Mouli, Hamid Khelafi
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Advancing eco-friendly concrete with locally sourced natural pozzolana
Frontiers in Built EnvironmentIntroductionThis study investigates the potential of locally sourced Natural Pozzolana (NP) from Saudi Arabia as a sustainable Supplementary Cementitious Material (SCM) for green concrete, supporting Saudi Vision 2030.MethodsAn extensive experimental ...
W. H. Khushefati +3 more
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Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete
Advances in Civil EngineeringConstruction industries are rapidly growing, sacking high amounts of concrete which has a highly dense microstructure with excellent mechanical properties, more durable, and highly eco-friendly materials.
Tsion Amsalu Fode +2 more
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A Comparison between Natural Pozzolana and Fly Ash Replacements on the Mechanical Properties of Concrete [PDF]
The International Conference on Civil Infrastructure and Construction, 2023 This study investigates the effect of Natural Pozzolana (NP) and Fly Ash (FA) substitutes on concrete's mechanical and microstructural properties. Mixes containing 10 - 50 % cement substitute ratios were prepared and tested for flexure and compressive strength after 28 days of curing.
Aburumman, Mervat O. +5 more
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The influence of natural pozzolana mineralogical composition in the properties of blended cement
Materiales de Construccion, 2002 The pozzolana activity is the main property of the active additions but, in order to select them, we have to consider - between other factors- its mineralogical composition with a great influence, not only in the active component, but also in other ...
M. Gener Rizo, J. M. Alonso Lavernia
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