Results 21 to 30 of about 4,051 (214)
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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Materials Proceedings, 2023 This comparative study investigates the pozzolanic potential of volcanic rocks sourced from the Aegean Islands, Greece, as additives in cement. The utilization of volcanic materials as pozzolanic additives has gained interest due to its ability to ...
Theodoros Sainis +3 more
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Residual capability of alkali binding by hydrated pozzolanic cements in long-service concrete structures [PDF]
, 2018 An experimental procedure was developed and applied to cement pastes made with two different pozzolanic cements (CEM IV/B (P) and CEM IV/B (V)) in order to ascertain the existence of a residual capability of alkali binding by long-term hydrated ...
Antonio Evangelista Paolini, And +2 more
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Performance of Italian zeolitic tuffs and pozzolana in 2-chlorophenol removal from contaminated groundwater. Lab-scale experience [PDF]
, 2008 The physical and chemical properties of zeolites and the availability of localized deposits of naturally occurring zeolitized tuffs and pozzolana, make them desirable for and applicable to the remediation of contaminated groundwater. This paper documents
BONI, Maria Rosaria +2 more
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Compressive Strength of Volcanic Ash/Ordinary Portland Cement Laterized Concrete [PDF]
, 2010 This study investigates the effect of partial replacement of cement with volcanic ash (VA) on the compressive strength of laterized concrete. A total of 192 cubes of 150mm dimensions were cast and cured in water for 7, 14, 21, and 28 days of hydration ...
Olawuyi, B. J, Olusola, K. O
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Radiation protection considerations on radon and building materials radioactivity in Near Zero Energy Buildings [PDF]
, 2017 Recent updates of the E.U. Basic Safety Standards, stated in the Council Directive 2013/59/EURATOM, are focusing on risks related to radon gas concentration inside dwellings and working places, as well as radioactivity of building materials.
Franci, Daniele +4 more
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Case Studies in Construction Materials, 2023 Environmental degradation is on the rise due to escalating pollution caused by raw material depletion and the increasing demand for concrete products.
Hussein M. Hamada +4 more
doaj +1 more source
Influence of Curing Age and Mix Composition on Compressive Strength of Volcanic Ash Blended Cement Laterized Concrete [PDF]
, 2012 This study investigates the influence of curing age and mix proportions on the compressive strength of volcanic ash (VA) blended cement laterized concrete. A total of 288 cubes of 100mm dimensions were cast and cured in water for 3, 7, 28, 56, 90 and 120
Babafemi, A. J +2 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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Stabilization of Algerian Clayey Soils with Natural Pozzolana and Lime
Periodica Polytechnica Civil Engineering, 2017 Cohesive soils with a high plasticity index present difficulties in construction operations because they usually contain expansive clay minerals. However, the engineering properties of soils can be improved by different techniques. The aim of this paper is to study the effect of using lime, natural pozzolana or a combination of both lime and natural ...
Said Kenai +2 more
openaire +2 more sources