Results 151 to 160 of about 1,486,774 (191)
Characterization of natural pozzolan-based geopolymeric binders
Cement and Concrete Composites, 2014 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.
Kemal Çelik, Seyoon Yoon, Kang Su Kim
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Historic Mortars with Burned Alum Shale as an Artificial Pozzolan
2012From the mid-eighteenth century extensive research in Sweden and in present day Finland focused on the development of mortars with hydraulic properties, the results mainly published by the Royal Swedish Academy of Science. The aim was to replace imported Italian pozzolan and Dutch trass with a pozzolan produced in Sweden.
Sölve Johansson, Jan Erik Lindqvist
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Materials and Structures, 2013
This research was to study the chloride penetration resistance of normal (W/B of 0.80, 0.62, 0.48) and high (W/B of 0.41, 0.35, 0.30) strength concretes containing ground pozzolans such as fly ash, bottom ash and rice husk ash using the rapid chloride penetration test and the immersion test methods. Furthermore, on the basis of this experimental data,
S. Inthata +2 more
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This research was to study the chloride penetration resistance of normal (W/B of 0.80, 0.62, 0.48) and high (W/B of 0.41, 0.35, 0.30) strength concretes containing ground pozzolans such as fly ash, bottom ash and rice husk ash using the rapid chloride penetration test and the immersion test methods. Furthermore, on the basis of this experimental data,
S. Inthata +2 more
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Transactions of the Indian Ceramic Society, 1967
Pozzolanic activity of some artificial pozzolanas having widely different chemical and mineralogical composition has been studied in relation to their specific surfaces. It has been observed that there is no direct relationship between specific surface and pozzolanic activity. Chemical and mineralogical compositions have a very important role.
Manas Kumar Chatterjee, Durgadas Lahiri
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Pozzolanic activity of some artificial pozzolanas having widely different chemical and mineralogical composition has been studied in relation to their specific surfaces. It has been observed that there is no direct relationship between specific surface and pozzolanic activity. Chemical and mineralogical compositions have a very important role.
Manas Kumar Chatterjee, Durgadas Lahiri
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International Journal of Scientific Research in Environmental Sciences, 2015
The treatment of a dispersive core soil can be achieved by mixing with lime and pozzolan, separately or simultaneously. On a dispersive soil treated with lime and pozzolan, experimental measurements of permeability were carried out with varying curing times and percentages of the additives.
Amir Hossein Vakili +3 more
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The treatment of a dispersive core soil can be achieved by mixing with lime and pozzolan, separately or simultaneously. On a dispersive soil treated with lime and pozzolan, experimental measurements of permeability were carried out with varying curing times and percentages of the additives.
Amir Hossein Vakili +3 more
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1991
Two different raw materials, i.e. Sinai Kaolin (pure kaolin) and Degla marl (lime-rich clay) were used in this study. The effect of calcination temperatures and its duration on the hydration properties of the prepared pozzolanic cements were investigated. The firing temperatures used, were 750, 850, and 950 degrees centigrade with durations of one, two
FATHY H. MOSALAMY, M.R. MABROUK
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Two different raw materials, i.e. Sinai Kaolin (pure kaolin) and Degla marl (lime-rich clay) were used in this study. The effect of calcination temperatures and its duration on the hydration properties of the prepared pozzolanic cements were investigated. The firing temperatures used, were 750, 850, and 950 degrees centigrade with durations of one, two
FATHY H. MOSALAMY, M.R. MABROUK
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Construction and Building Materials, 2017
Abstract The blended Portland cement, CEM II, is obtained by replacing a part of clinker by an addition, as described in the EN 197-1 standard. Among the materials cited in this standard, there are the artificial pozzolans. When used as partial replacement of clinker or cement and in presence of water, the pozzolanic materials react with the calcium ...
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Abstract The blended Portland cement, CEM II, is obtained by replacing a part of clinker by an addition, as described in the EN 197-1 standard. Among the materials cited in this standard, there are the artificial pozzolans. When used as partial replacement of clinker or cement and in presence of water, the pozzolanic materials react with the calcium ...
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Examining of the Effect of Pozzolans on Concrete Compressive Strength by Artificial Neural Network
2006In this study, determination of effect of fly-ash content as pozzolan admixture on the compressive strength of concrete was investigated by use of Artificial Neural Network (ANN). ANN has been gain to importance in civil engineering application as soon as other applications in last century. For modeling to ANN, Matlab program was used.
Topçu, İlker Bekir +2 more
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"SP-199: Seventh CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete", 2001
Metakaolin is a supplementary cementitious material with pozzolanic properties. Its precursor, kaolin, does not occur in natural conditions as a pure phase but is often mixed in various proportions with many secondary minerals. Two natural clays from the same deposit, mainly composed of kaolinite and quartz have been burnt at a suitable temperature and
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Metakaolin is a supplementary cementitious material with pozzolanic properties. Its precursor, kaolin, does not occur in natural conditions as a pure phase but is often mixed in various proportions with many secondary minerals. Two natural clays from the same deposit, mainly composed of kaolinite and quartz have been burnt at a suitable temperature and
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Applied Clay Science, 2014
Abstract This paper describes the effect of high temperature on the hydration characteristics of artificial pozzolanic cement pastes containing metakaolin with or without silica fume for different hydrothermal ages in well closed stainless steel capsule. Pastes were hydrothermally treated in well closed stainless steel capsule at 180 °C for different
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Abstract This paper describes the effect of high temperature on the hydration characteristics of artificial pozzolanic cement pastes containing metakaolin with or without silica fume for different hydrothermal ages in well closed stainless steel capsule. Pastes were hydrothermally treated in well closed stainless steel capsule at 180 °C for different
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