Results 1 to 10 of about 891 (160)
Iraqi bentonite as natural pozzolan
Magazine of Civil Engineering, 2022 In this study, Iraqi high-calcium bentonite was used for the first time to prepare natural pozzolan for concrete by the thermal activation method (calcination).
Al-Hammood Amer +2 more
doaj +2 more sources
Case Studies in Construction Materials, 2022 In the present work, effect of inclusion of silica fume on the performance of natural pozzolan-based cement concrete was investigated. Natural pozzolan, obtained from volcanic rocks, was used as the main supplementary cementitious material to partially ...
Shamsad Ahmad +3 more
doaj +3 more sources
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 +1 more
exaly +3 more sources
Characterization of natural pozzolan-based geopolymeric binders [PDF]
Cement and Concrete Composites, 2014 Abstract Properties and characteristics of fly ash- or slag-based geopolymers have been extensively explored but comparatively less information is available for natural pozzolan-based geopolymers. The present work focuses on microstructural characteristics of natural pozzolan-based geopolymers activated by sodium hydroxide and a mixture of sodium ...
Juhyuk Moon +2 more
exaly +3 more sources
Enhancing sustainable concrete using waste ceramic powder and natural pozzolan through experimental and machine learning approaches [PDF]
Scientific ReportsAs global demand rises and natural aggregates become scarcer, using supplementary materials and industrial waste for concrete production offers a sustainable solution that conserves resources and reduces waste.
Danial Nasr +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
doaj +4 more sources
Cement and Concrete Research, 2010 Abstract Pozzolanic activity of clinoptilolite, the most common natural zeolite mineral, was studied in comparison to silica fume, fly ash and a non-zeolitic natural pozzolan. Chemical, mineralogical and physical characterizations of the materials were considered in comparative evaluations.
M Cemal Göncüoğlu
exaly +4 more sources
Performance assessment of natural pozzolan roller compacted concrete pavements
Case Studies in Construction Materials, 2017 Concrete pavement is cost effective and beneficial because of its sustainability and durability. The maintenance and renovation periods for such pavement compared to other pavements are relatively long; however, a significant issue with pavements ...
S.A. Ghahari +2 more
doaj +3 more sources
Study of Mortars Made with Natural and Artificial Pozzolans
Journal of Materials and Engineering Structures, 2019 The objective of this work is to evaluate the thermal activation potential of clay soils, particularly the clay fraction of dam mud, for the production of artificial pozzolan which can be substituted to cement in concrete and mortars applications and ...
Imene LAOUFI +3 more
doaj +1 more source
Eco-friendly isolant composite mortars based on natural pozzolan, fly ash and plastic fibers [PDF]
E3S Web of Conferences, 2023 Thermal insulation in buildings has gained significant attention recently due to the clear benefits of selecting appropriate insulation materials for energy conservation.
Doughmi Khaoula, Baba Khadija
doaj +1 more source