Relevant bibliographies by topics / Pozzolana / Journal articles
To see the other types of publications on this topic, follow the link: Pozzolana.

Journal articles on the topic 'Pozzolana'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Pozzolana.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Hago, Abdel Wahid, Amer Ali Al-Rawas, and Awadh Al-Sidairi. "Effect of the Fineness of Artificial Pozzolana (Sarooj) on the Properties of Lime-Pozzolana Mixes." Sultan Qaboos University Journal for Science [SQUJS] 7, no. 2 (2002): 251. http://dx.doi.org/10.24200/squjs.vol7iss2pp251-258.

Full text
Abstract:
Strength development of lime-pozzolana mortars is affected by the fineness of the pozzolan. This paper examines the effect of the fineness of artificial pozzolana on the strength development of lime-pozzolana mixtures. An artificial pozzolana produced by calcining clays from Oman was used in this study. The artificial pozzolana is locally known as “Sarooj”, and is currently being used in a big project for the restoration of historical monuments undertaken by the Omani Ministry of National Heritage and Culture. The artificial pozzolana was ground to various degrees of fineness, blended with hyd
APA, Harvard, Vancouver, ISO, and other styles
2

Wassouf, Moustafa, Jamal Omran, and Ali Kheirbek. "Effect of natural pozzolana, pozzolanic sand, and basalt on thermal and mechanical properties of green concrete." Building Engineering 3, no. 1 (2024): 1739. http://dx.doi.org/10.59400/be1739.

Full text
Abstract:
Green concrete, also known as sustainable concrete, is a building material that aims to reduce environmental impact by using natural, recycled, or sustainable materials in its production. One way to achieve sustainability in concrete is to replace cement with pozzolanic materials, which not only reduces the carbon footprint but also improves the performance of concrete and reduces its cost. This study aims to use natural materials that can partially or completely replace cement and conventional aggregates in concrete mixes. pozzolanic gravel (GPoz) replaced coarse aggregate, basaltic sand (SBa
APA, Harvard, Vancouver, ISO, and other styles
3

Waghmare, Jagruti Dattatraya, Samruddhi Sampatrao Patil, Sheha Mahadeo Patil, and M. Maske. "Study and Review of Properties and Applications of Portland Pozzolana Cement." ASEAN Journal of Science and Engineering 1, no. 1 (2021): 13–18. http://dx.doi.org/10.17509/ajse.v1i1.37980.

Full text
Abstract:
Portland Pozzolana Cement (PPC) is prepared by adding Pozzolanic materials to ordinary Portland Cement. The artificial pozzolana materials used in the manufacturing of PPC such as fly ash, silica fume, rice husk, blast furnace slag, are actually industrial waste, which is produced in large amounts. These artificial pozzolana materials when used in concrete can reduce consumption of natural resources, diminish the effect of pollutants in the environment and it is economical and reliable. The main objective of this paper is to focus on the properties and applications of Portland Pozzolana Cement
APA, Harvard, Vancouver, ISO, and other styles
4

Tommasi, Paolo, Luca Verrucci, and Tatiana Rotonda. "Mechanical properties of a weak pyroclastic rock and their relationship with microstructure." Canadian Geotechnical Journal 52, no. 2 (2015): 211–23. http://dx.doi.org/10.1139/cgj-2014-0149.

Full text
Abstract:
The geotechnical behaviour of very weak pyroclastic rocks controls both the failure mechanisms at the margins of rock mesas, where historic hill towns are often sited, as well as the stability of old underground cavities in urban areas of Central Italy. The study focuses on the mechanical behaviour of one of the pyroclastic materials forming the Orvieto mesa (pozzolana), not unlike other pozzolanas in Central and Southern Italy and other pyroclastites from volcanic districts worldwide. The mechanical properties under static conditions of this weakly cemented rock are reported. A petrographic a
APA, Harvard, Vancouver, ISO, and other styles
5

M. I, El-Sharif, Alyamani A. A, and Mutasim A. A. "Lime –Metakaolin Interaction." FES Journal of Engineering Sciences 9, no. 2 (2021): 21–27. http://dx.doi.org/10.52981/fjes.v9i2.672.

Full text
Abstract:
The standard mix ratio of lime: pozzolana specified by all standards is 1:2 by weight to produce lime pozzolan cement (LPC) with the minimum required strength of 4 MPa. This ratio may be affected by many factors such as the quality of lime and pozzolana, in adition to the quantity of amorphous silica in pozzolana. In this paper a local kaolin and lime were investigated for their chemical, physical, mineralogical, and thermal properties, using various techniques such as XRF, DTG/DSC, and XRD. The produced metakaolin (MK) and hydrated lime (CH) were first tested for their reactivity, then differ
APA, Harvard, Vancouver, ISO, and other styles
6

Cizer, Özlem, Koen Van Balen, and Dionys Van Gemert. "Competition between Hydration and Carbonation in Hydraulic Lime and Lime-Pozzolana Mortars." Advanced Materials Research 133-134 (October 2010): 241–46. http://dx.doi.org/10.4028/www.scientific.net/amr.133-134.241.

Full text
Abstract:
A combined reaction of hydration and carbonation takes place in hydraulic lime and lime-pozzolana mortars. Hydration reactions are the first reaction and carbonation of lime is the complementary reaction in the strength gain. Competition between these two reactions can occur in lime-pozzolana mortars if the pozzolanic material has low reactivity with lime, leading to the consumption of lime by carbonation reaction. The degree and the order of these reactions are strongly influenced by the moisture content. Hydration reactions are enhanced under moist conditions while carbonation is delayed. Cu
APA, Harvard, Vancouver, ISO, and other styles
7

Shraddha, Chakurkar, and K.G. Guptha Dr. "Cement as an Evolutionary Binding Material." Journal of Engineering Analysis and Design 3, no. 2 (2021): 1–11. https://doi.org/10.5281/zenodo.5548922.

Full text
Abstract:
Cement being widely used and accepted binding material in construction industry has witnessed changes in terms of method of production and composition. Various materials like pozzolana and nano materails were introduced. Addition of pozzolana reduces the requirement of OPC and increase durability, long term strength, and also improved micro-structure. Since Nano materials are of the order of CSH gel are more efficient than pozzolanic materials at lower dosage. Limitation in using nano materials are their higher cost and difficulty in dispersion of agglomerated particles. Production of cement h
APA, Harvard, Vancouver, ISO, and other styles
8

Wilińska, Iwona, Barbara Pacewska, and Valentin Antonovič. "Hydration Processes of Four-Component Binders Containing a Low Amount of Cement." Materials 15, no. 6 (2022): 2192. http://dx.doi.org/10.3390/ma15062192.

Full text
Abstract:
Results of research on hydration of four-component binders containing very high amounts of supplementary cementitious materials were presented. The samples were composed of blended pozzolana (a mix of conventional fly ash and spent aluminosilicate catalyst), cement (about 20 wt.% in the binder) and Ca(OH)2. Spent aluminosilicate catalyst was proposed as activating component which can improve properties of low-cement blends, while the role of Ca(OH)2 was to enhance pozzolanic reaction. Early and later hydration periods of such blends were investigated by calorimetry, TG/DTG, FTIR and X-ray diff
APA, Harvard, Vancouver, ISO, and other styles
9

Polozhiy, Kirill, Jamal Akhter Siddique, and Pavel Reiterman. "Low Cost Cement Floor Screed." Materials Science Forum 824 (July 2015): 77–80. http://dx.doi.org/10.4028/www.scientific.net/msf.824.77.

Full text
Abstract:
Floor screed with different amount of pozzolanic admixture was studied. There were designed 3 mixtures with different amount of the pozzolana. The basic physical properties, mechanical properties and frost resistance were determined. The water /cement coefficient was decided to be taken according to the consistence of the mortar. The mixtures were designed with respect to their application as screed. The properties of developed low-cost pozzolanic screed exceeds the reference material.
APA, Harvard, Vancouver, ISO, and other styles
10

Eshun, S. N., Solomon Senyo Robert Gidigasu, and S. K. Y. Gawu. "The Effect of Clay Pozzolana-Cement-Composite on the Strength Development of a Hydraulic Backfill." Ghana Mining Journal 18, no. 1 (2018): 32–38. http://dx.doi.org/10.4314/gm.v18i1.4.

Full text
Abstract:
The study sought to investigate the potential application of clay pozzolana as a supplement for cement in hydraulic backfill, using classified tailings from AngloGold Ashanti, Obuasi Mine. The percentage of the Portland cement that could be substituted with the clay pozzolana to produce backfill with best strength was determined. 10%, 25%, 30%, 35% and 40% of the ordinary Portland cement were replaced with clay pozzolana and then mixed with tailings and water. The slurry produced was cast into cylindrical specimen of 50mm diameter by 120mm high and tested for compressive strength after curing
APA, Harvard, Vancouver, ISO, and other styles
11

Vejmelková, Eva, Jaroslava Koťátková, Monika Čáchová, and Dana Koňáková. "Comparison of the Effects of Different Pozzolana on the Properties of Self-Compacting Concrete." Key Engineering Materials 677 (January 2016): 103–7. http://dx.doi.org/10.4028/www.scientific.net/kem.677.103.

Full text
Abstract:
The article compares the basic physical, mechanical and both liquid water and water vapour transport properties of self-compacting concrete containing different pozzolanic admixtures. Limestone, fly ash and metakaolin were used. A concrete mixture without any pozzolana was also manufactured as a reference. The best values of studied properties were recorded for the metakaolin concrete.
APA, Harvard, Vancouver, ISO, and other styles
12

S. M. Hamza, Omer, Magdi M. E. Zumrawi, and Awad E. M. Mohamed. "Effect of Pozzolana and Lime on Expansive Soil Properties." FES Journal of Engineering Sciences 9, no. 3 (2021): 94–101. http://dx.doi.org/10.52981/fjes.v9i3.702.

Full text
Abstract:
This study investigates the effect of pozzolana and quick lime as stabilizer materials on expansive soil properties. Disturbed soil sample was collected from Al-Qadarif city in east of Sudan. The basic properties, swelling and strength of the soil were measured. The soil shows very weak strength and very high swelling potential. Mineralogical analysis tests were conducted to the soil using XRD tests. The soil contains significant amount of montmorillonite mineral (86%). Laboratory tests were undertaken on soil stabilized with varying percentage of pozzolana only (0, 5, 10, 15, 20, and 30%) and
APA, Harvard, Vancouver, ISO, and other styles
13

Žižková, Nikol, Rostislav Drochytka, and Patrik Bayer. "The Properties of Polymer-Modified Mortars Using Pozzolana Active Admixtures." Advanced Materials Research 1129 (November 2015): 185–92. http://dx.doi.org/10.4028/www.scientific.net/amr.1129.185.

Full text
Abstract:
The paper focuses on the changes in properties of cement and polymer-modified cement mortars when pozzolana-active admixture are added into the mixture. Natural and artificial pozzolans based on amorphous and mineral silicon dioxide were used. In order to explain the results obtained from the experiment and to gain new insights about the microstructure of the mixtures, equipment such as SEM sampling, RDA analysis, DTA and high-pressure mercury intrusion porosimetry were used.
APA, Harvard, Vancouver, ISO, and other styles
14

Záleská, Martina, Milena Pavlíková, and Zbyšek Pavlík. "Classification of a-SiO2 Rich Materials." Materials Science Forum 824 (July 2015): 33–38. http://dx.doi.org/10.4028/www.scientific.net/msf.824.33.

Full text
Abstract:
The powder materials containing active SiO2, which are used as pozzolanic active materials in cement mixtures, can be classified in consideration of their pozzolana activity, particle size or reactivity. In this paper, several types of metakaoline are studied using Frattini and modified Chapelle test for pozzolanic activity determination. The particle size analysis is measured using the laser diffraction analyser and the differences in the chemical composition are characterized by FTIR spectroscopy. The obtained data show influence of particle size and chemical composition of tested powders on
APA, Harvard, Vancouver, ISO, and other styles
15

Onwuka, DO, and S. Sule. "PREDICTION OF FLEXURAL STRENGTH OF CHIKOKO POZZOLANA BLENDED CEMENT CONCRETE USING OSADEBE’S REGRESSION FUNCTION." Nigerian Journal of Technology 36, no. 3 (2017): 712–23. http://dx.doi.org/10.4314/njt.v36i3.8.

Full text
Abstract:
Chikoko mud is abundant in the mangrove swamps of the Niger Delta area of Nigeria. Its utilization in concrete production is traceable to its pozzolanic properties. In this paper, a regression model is developed to predict and optimize the flexural strength of chikoko pozzolana blended cement concrete using Osadebe’s regression function. The results obtained from the derived regression model are very close to those obtained from experiment. The model was tested for adequacy using a Fisher test at 5% level of significance and was found to be adequate. A computer program coded in basic languag
APA, Harvard, Vancouver, ISO, and other styles
16

Pavlíková, Milena, Pavla Rovnaníková, Martina Záleská, and Zbyšek Pavlík. "Diatomaceous Earth—Lightweight Pozzolanic Admixtures for Repair Mortars—Complex Chemical and Physical Assessment." Materials 15, no. 19 (2022): 6881. http://dx.doi.org/10.3390/ma15196881.

Full text
Abstract:
The presented research is focused on the complex assessment of three different types of diatomaceous earth and evaluation of their ability for application as pozzolana active admixtures applicable in the concrete industry and the production of repair mortars applicable for historical masonry. The comprehensive experimental campaign comprised chemical, mineralogical, microstructural, and physical testing of raw materials, followed by the analyses and characterization of pozzolanic activity, rheology and heat evolution of fresh blended pastes, and testing of macrostructural and mechanical parame
APA, Harvard, Vancouver, ISO, and other styles
17

Ahmad, Muhammad, Muhammad Sajjad, Irfan Khan, et al. "Sustainable production of blended cement in Pakistan through addition of natural pozzolana." Chemical Industry and Chemical Engineering Quarterly 22, no. 1 (2016): 41–45. http://dx.doi.org/10.2298/ciceq141012017a.

Full text
Abstract:
In this work pozzolana deposits of district Swabi, Pakistan were investigated for partial substitution of Portland cement along with limestone filler. The cement samples were mixed in different proportions and tested for compressive strength at 7 and 28 days. The strength activity index (SAI) for 10 % pozzolana, and 5% limestone blend at 7 and 28 days was 75.5% and 85.0% satisfying the minimum SAI limit of ASTM C618. Twenty two percents natural pozzolana and five percents limestone were interground with clinker and gypsum in a laboratory ball mill to compare the power consumption with ordinary
APA, Harvard, Vancouver, ISO, and other styles
18

Vyšvařil, Martin. "Monitoring the reactivity of pozzolans by thermogravimetric method." Acta Polytechnica CTU Proceedings 53 (July 12, 2025): 102–7. https://doi.org/10.14311/app.2025.53.0102.

Full text
Abstract:
This work focuses on comparing the effect of ten different types of pozzolans on the strength of lime pastes in relation to their pozzolanic activities as determined by the Chapelle test and monitoring the reactivity of these pozzolans using the thermogravimetric method. It was found that the Chapelle test can in some cases overestimate the reactivity of the pozzolan due to differences between the conditions during the test and in reality. The strengths of lime-pozzolan pastes did not correlate well with the pozzolanic activity values of the pozzolans used. On the contrary, the amount of react
APA, Harvard, Vancouver, ISO, and other styles
19

Bouyahyaoui, A., M. Cherkaoui, My L. Abidi, and T. Cherradi. "Thermal characteristics study of light aggregate concrete of the middle Atlas pozzolana." MATEC Web of Conferences 149 (2018): 01033. http://dx.doi.org/10.1051/matecconf/201814901033.

Full text
Abstract:
We present in this work an experimental study of the thermomechanical characterization of pozzolan (volcanic rock widespread in the region of Azrou in the Middle Atlas in Morocco). The objective of this work is to evaluate the effect of the pozzolan on the thermal conductivity of pozzolanic concrete by using different concrete formulations and this, by substituting various percentages of gravel and usual sands with gravel and sand of the pozzolan. The thermal properties of the samples consist to determine the thermal conductivity and the heat capacity. The results obtained show that the pozzol
APA, Harvard, Vancouver, ISO, and other styles
20

Shi, Caijun. "An overview on the activation of reactivity of natural pozzolans." Canadian Journal of Civil Engineering 28, no. 5 (2001): 778–86. http://dx.doi.org/10.1139/l01-041.

Full text
Abstract:
Natural pozzolan is one of the oldest construction materials. Lime-pozzolan cements have been used for several thousands of years and have an excellent reputation for their durability. Pozzolans are being widely used as a cement replacement in Portland cement concrete. The use of pozzolans has the advantage of lower costs and better durability, but the disadvantage of a longer setting time and a slower early strength development. Different techniques have been tried to increase the reactivity of natural pozzolans to overcome these disadvantages. This paper has reviewed various methods used to
APA, Harvard, Vancouver, ISO, and other styles
21

Garcia-Troncoso, Natividad, Bowen Xu, and Wilhenn Probst-Pesantez. "Development of Concrete Incorporating Recycled Aggregates, Hydrated Lime and Natural Volcanic Pozzolan." Infrastructures 6, no. 11 (2021): 155. http://dx.doi.org/10.3390/infrastructures6110155.

Full text
Abstract:
Recycling of construction and demolition waste is a central point of discussion throughout the world. The application of recycled concrete as partial replacement of mineral aggregates in concrete mixes is one of the alternatives in the reduction of pollution and savings in carbon emissions. The combined influence of the recycled crushed concrete, lime, and natural pozzolana on the mechanical and sustainable properties of concrete materials is firstly proposed in this study. In this research, unconventional construction materials are employed to produce concrete: the recycled crushed concrete i
APA, Harvard, Vancouver, ISO, and other styles
22

Mitrovic, Aleksandra, and Miodrag Zdujic. "Mechanochemical treatment of Serbian kaolin clay to obtain high reactive pozzolana." Journal of the Serbian Chemical Society 78, no. 4 (2013): 579–90. http://dx.doi.org/10.2298/jsc120829107m.

Full text
Abstract:
Mechanochemical treatment of Serbian kaolin clay was carried out in a planetary ball mill using two different milling media, hardened steel or zirconia vials and balls. The samples obtained with various milling times were characterized by the particle size laser diffraction (PSLD), X-ray diffraction (XRD), differential scanning calorimetry/thermogravimetry (DTA/TGA) and Fourier-transform infrared (FTIR) analyses. Mechanochemical treatment induced amorphization of the kaolinite phase accompanied by dehydroxylation. It was found that for the given milling parameters, amorphization mainly took pl
APA, Harvard, Vancouver, ISO, and other styles
23

Polozhiy, Kirill, Jamal Akhter Siddique, and Pavel Reiterman. "Influence of Plasticizer on Properties of Blended Cement Concrete." Materials Science Forum 824 (July 2015): 61–64. http://dx.doi.org/10.4028/www.scientific.net/msf.824.61.

Full text
Abstract:
In this article Portland-slag cement was step by step replaced with pozzolana (fine red-clay ceramics) in concrete. This is first step of research that is why the only measured characteristics were consistency of mixtures and compressive strength. There were designed four mixtures with increasing replacement of Portland cement by 10 % each (CR, C1, C2, C3) where complete activity of pozzolana was assumed. Mixtures C4, C5 and C6 were designed with respect to presumed just partial activity of the used pozzolana (set as 40 %). The water/cement coefficient was decided to be taken according to the
APA, Harvard, Vancouver, ISO, and other styles
24

Kalinowska-Wichrowska, Katarzyna, Edyta Pawluczuk, Michał Bołtryk, and Adam Nietupski. "Geopolymer Concrete with Lightweight Artificial Aggregates." Materials 15, no. 9 (2022): 3012. http://dx.doi.org/10.3390/ma15093012.

Full text
Abstract:
This article presents the physical and mechanical properties of geopolymer concrete with lightweight artificial aggregate. A research experiment where the influence of fly ash–slag mix (FA-S), as part of a pozzolanic additive, on the properties of geopolymers was carried out and the most favorable molar concentration of sodium hydroxide solution was determined. The values of three variables of the examined properties of the geopolymer lightweight concrete (GLC) were adopted: X1—the content of the pozzolanic additives with fly ash + flay ash–slag (FA + FA-S) mix: 200, 400 and 600 kg/m3; X2—the
APA, Harvard, Vancouver, ISO, and other styles
25

Vejmelková, Eva, Dana Koňáková, and Pavla Rovnaníková. "Properties of Concrete with Lower Amount of SCM." Materials Science Forum 824 (July 2015): 65–69. http://dx.doi.org/10.4028/www.scientific.net/msf.824.65.

Full text
Abstract:
Basic physical properties, pore structure, hygric properties and frost resistance concrete containing supplementary cementing materials. The amount of SCMs was kept constant to replace 10% of cement. Experimental results show that bulk density and matrix density of studied material vary only slightly except the mixture with fine natural pozzolana which achieved lower values in comparison with the reference material. This is in agreement with open porosity and transport of liquid water - its highest values manifest the worst performance of fine natural pozzolana among the studied materials. Fro
APA, Harvard, Vancouver, ISO, and other styles
26

Médici, M. E., O. A. Benegas, F. Aguirre, et al. "Flow of wet natural pozzolana." Journal of Physics: Conference Series 166 (May 1, 2009): 012002. http://dx.doi.org/10.1088/1742-6596/166/1/012002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Yusuf, Nurudeen. "An Investigation on Durability Properties of Concrete From Selected Argo-Based Materials as Pozzolanas." Civil Engineering Beyond Limits 5, no. 4 (2024): 1–9. https://doi.org/10.36937/cebel.2024.1950.

Full text
Abstract:
This research examines the properties and durability of green and hardened concrete incorporating selected agro-based pozzolans: rice husk ash, locust bean pod ash, sugarcane bagasse, soya bean pod ash, and maize cob ash. These pozzolans were calcined and analyzed using X-ray fluorescence (XRF) to replace cement in concrete cubes, which were cured over 7, 14, 21, and 28 days. The findings indicate that all pozzolans meet ASTM C618 requirements. Specifically, rice husk ash, sugarcane bagasse, and maize cob ash qualify as Class C pozzolana, while locust bean ash and soya bean ash are classified
APA, Harvard, Vancouver, ISO, and other styles
28

Koťátková, Jaroslava, Dana Koňáková, Eva Vejmelková, Pavel Reiterman, and Jamal Akhter Siddique. "Mechanical and Water Transport Properties of HSC with Different SCMs." Materials Science Forum 824 (July 2015): 105–10. http://dx.doi.org/10.4028/www.scientific.net/msf.824.105.

Full text
Abstract:
Pozzolanic materials and their usage in concrete production are nowadays widely spread. Their application as additives is inherent especially for the purpose of high strength concrete. This article deals with evaluation and comparison of the influence of two different supplementary cementitious materials on the properties of high strength concrete: natural pozzolana (NP) and finely crushed brick (FCB). The studied characteristics are basic physical properties with connection to mechanical parameters, and next to this, characterization of water transport. In the scope of this study results reve
APA, Harvard, Vancouver, ISO, and other styles
29

Doleželová, Magdaléna, and Alena Vimmrová. "Porosity of the Ternary Gypsum-Based Binders with Different Types of Pozzolan." Key Engineering Materials 677 (January 2016): 122–27. http://dx.doi.org/10.4028/www.scientific.net/kem.677.122.

Full text
Abstract:
Ternary gypsum-binders with different types of pozzolan were stored in the water and in the air. Brick powder, microsilica and blast slag were used as a pozzolan admixture. The quantity of the pozzolan in the mixture was determined from the amount of the amorphous phase in the pozzolan. Mixtures with pozzolans do not lose strength when stored in the water. Porosimetry shows that the product of the pozzolanic reaction started to develop.
APA, Harvard, Vancouver, ISO, and other styles
30

Čáchová, Monika, Lenka Scheinherrová, Libor Kobera, Martina Urbanová, Jiří Brus, and Martin Keppert. "Monitoring of Kinetics of Pozzolanic Reaction." Key Engineering Materials 722 (December 2016): 126–31. http://dx.doi.org/10.4028/www.scientific.net/kem.722.126.

Full text
Abstract:
The pozzolanic additions are widely used as concrete component for numerous technical, economic and environmental reasons. Obviously the hydration process in a pozzolana containing system differs from hydration of Ordinary Portland Cement (OPC) what is indicated macroscopically by slower increase of strength and lower hydration heat. This paper aims to study pozzolanic reaction from perspective of chemical kinetics. From this point of view pozzolanic reaction and carbonation are two parallel reactions which are competing for portlandite (Ca (OH)2). The rate of each of these two reactions is ch
APA, Harvard, Vancouver, ISO, and other styles
31

Sarfo-Ansah, J., K. A. Boakye, E. Atiemo, and R. Appiah. "A Quality Control Scheme for a Commercial Pozzolana Plant: A Case Study of Pozzolana Ghana Ltd." Ghana Journal of Science 60, no. 2 (2019): 74–83. http://dx.doi.org/10.4314/gjs.v60i2.8.

Full text
Abstract:
A Quality control scheme was developed for a 200 ton per day commercial pozzolana plant. The scheme was evaluated for the first 34 days of production. Statistical Process Control tech­niques were specifically applied to the mechanical properties of setting times and compressive strength. Results obtained showed that pozzolana samples tested were chemically suitable with total SiO2, Al2O3 and Fe2O3 content ≥ 70%. Mechanical tests performed were mostly under control and when out-of-control, they gave valuable indication to plant malfunction or operator errors which were promptly corrected. The r
APA, Harvard, Vancouver, ISO, and other styles
32

Juimo Tchamdjou, Willy Hermann, Sophie Grigoletto, Frédéric Michel, Luc Courard, Toufik Cherradi, and Moulay Larbi Abidi. "Effects of Various Amounts of Natural Pozzolans from Volcanic Scoria on Performance of Portland Cement Mortars." International Journal of Engineering Research in Africa 32 (September 2017): 36–52. http://dx.doi.org/10.4028/www.scientific.net/jera.32.36.

Full text
Abstract:
The aim of this paper is to assess the possibility of using natural pozzolans (NPs) from Cameroonian volcanic scoria as supplementary cementitious materials (SCMs) in the production of Portland cement mortars. Four natural pozzolans (Black Natural Pozzolan: BNP, Dark-Red Natural Pozzolan: DRNP, Red Natural Pozzolan: RNP and Yellow Natural Pozzolan: YNP) with 3600, 4500, 4700 and 5200 cm2/g Blaine fineness respectively were produced from different colors (Black, Dark red, Red and Yellow) volcanic scoria in a laboratory mill. Natural pozzolans were characterized with regard to particle size dist
APA, Harvard, Vancouver, ISO, and other styles
33

Žvironaitė, Jadvyga, Ina Pundienė, Sergejus Gaidučis, and Viktor Kizinievič. "EFFECT OF DIFFERENT POZZOLANA ON HARDENING PROCESS AND PROPERTIES OF HYDRAULIC BINDER BASED ON NATURAL ANHYDRITE." Journal of Civil Engineering and Management 18, no. 4 (2012): 530–36. http://dx.doi.org/10.3846/13923730.2012.702126.

Full text
Abstract:
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). The properties of P have an effect on ACP hydration, structure development and durability properties. This effect is different than that in cement pastes. Investigations were performed with known P: natural opoka (O) and microsilica (MS), also with production waste of mineral wool – cupola dust (CD), which is famous for high fineness and amorphous structure of particles. It was estab
APA, Harvard, Vancouver, ISO, and other styles
34

Pernicova, Radka. "Influence of Hydrophobic Agent on Rheological Behavior of Historical Plaster. Part 1: Initial Hardening Time." Key Engineering Materials 776 (August 2018): 127–32. http://dx.doi.org/10.4028/www.scientific.net/kem.776.127.

Full text
Abstract:
The influence of time on rheological properties of modified lime plaster is analyzed in this paper. Effect of composition of mixture is examined as well. Especially changes of paste due to hydrophobic and pozzolanic admixture. Main aim of rheological test is determination of flow curves, obtained by applying a succession of constant strain rates for short times. Base on performed experiments, it can be concluded that hydrophobic admixture eliminated influence of pozzolana. Also both time and temperature caused significant changes in rheological properties. Increasing values decreases the flow
APA, Harvard, Vancouver, ISO, and other styles
35

Merida, Ahcene, and Fattoum Kharchi. "Corrosion of the Pozzolan Concrete in Sulfates." Advanced Materials Research 911 (March 2014): 494–98. http://dx.doi.org/10.4028/www.scientific.net/amr.911.494.

Full text
Abstract:
Sulfate attack and its effects are important from both scientific and industrial viewpoints. Itis perceived that cements containing pozzolan have better performance in sulfate solutions,since the pozzolanic reactions reduce the quantity of calcium hydroxide and increasecalcium silicate hydrate. This paper investigates the physical and mechanical properties ofconcretes made by blended cement containing Algerian natural pozzolan of volcanic origin, and Portland cement. in order to better determine the pozzolanic effect of the pozzolan addition in the concrete, the analysis of the experimental re
APA, Harvard, Vancouver, ISO, and other styles
36

Presa, Leticia, Jorge L. Costafreda, Domingo A. Martín, and Isabel Díaz. "Natural Mordenite from Spain as Pozzolana." Molecules 25, no. 5 (2020): 1220. http://dx.doi.org/10.3390/molecules25051220.

Full text
Abstract:
This work deals with anomalous concentrations of natural mordenite in the southeast of Spain. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) studies evidenced that the samples contain mainly monomineral zeolitic phase of mordenite (70% to 74%), usually accompanied by smectite (montmorillonite), the principal component of bentonite. A study of the applicability of these zeolites is presented to establish the potential use as pozzolanic cements. For comparative purposes, synthetic commercial mordenite is also characterized and tested. The initial mixtures were prepared using
APA, Harvard, Vancouver, ISO, and other styles
37

Al-Rawas, Amer A., Abdel Wahid Hago, Timothy C. Corcoran, and Khalid M. Al-Ghafri. "Properties of Omani artificial pozzolana (sarooj)." Applied Clay Science 13, no. 4 (1998): 275–92. http://dx.doi.org/10.1016/s0169-1317(98)00029-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Vyšvařil, Martin, Tomáš Žižlavský, Karel Dvořák, and Edyta Spychał. "Long-term mechanical properties of lime-pozzolan mortars: The role of amorphous Al2O3." MATEC Web of Conferences 403 (2024): 02009. http://dx.doi.org/10.1051/matecconf/202440302009.

Full text
Abstract:
Today, lime-pozzolan mortars are being used in the repair of historic buildings, replacing the lime-cement mortars that were previously used in this practice, but were incompatible with historic mortars. It has been observed in laboratory research and also in practice that some lime-pozzolan mortars can lose strength over time. The cause of this behaviour is not fully understood, but the main reason seems to be the instability and breakdown of the aluminate phases. In this paper, the role of amorphous Al2O3 content in pozzolans on the long-term mechanical properties of lime-pozzolan mortars is
APA, Harvard, Vancouver, ISO, and other styles
39

Kumar, M. Pranay, and Mrs G. Sai Sruthi. "Investigation Report on Characteristics Strength Partial Replacement of Fine Aggregate with Copper Slag and Granite Powder." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 12 (2024): 1–2. https://doi.org/10.55041/ijsrem39365.

Full text
Abstract:
Concrete is one of the most widely used construction materials, consisting of cement, fine aggregates, coarse aggregates, and water. Traditionally, Ordinary Portland Cement (OPC), river sand, and Hard Broken Granite (HBG) stone are used in concrete production. However, the over-extraction of these natural resources has led to environmental concerns and increased costs. This has created a need for sustainable alternatives that maintain concrete’s quality and performance. This study investigates the partial replacement of fine aggregates with copper slag and granite powder in M25 grade concrete.
APA, Harvard, Vancouver, ISO, and other styles
40

Dada, El Hadja, Akram Salah-Eddine Belaidi, Hamza Soualhi, and El Hadj Kadri. "Coupled Effect of temperature and additions on the rheological behavior of concrete equivalent mortars (CEM)." MATEC Web of Conferences 330 (2020): 01016. http://dx.doi.org/10.1051/matecconf/202033001016.

Full text
Abstract:
The aim of this work is to study the influence of mineral additions on the rheological behavior of low impact environmental concrete with its concrete equivalent mortar (CEM) at different temperatures.The experimental study is carried out on cement-based CEM substituted by two additions namely, natural pozzolana (PZ) and marble powder (PM), with a substitution rate of 5 to 20%, a ratio of water on binder E / L = 0.5 and a percentage of superplasticizer based on polycarboxylates SP = 0.30%. The rheological parameters, the workability and the flow time of the mixtures were tested by a coaxial rh
APA, Harvard, Vancouver, ISO, and other styles
41

Gadouri, Hamid, Khelifa Harichane, and Mohamed Ghrici. "Assessment of sulphates effect on pH and pozzolanic reactions of soil–lime–natural pozzolana mixtures." International Journal of Pavement Engineering 20, no. 7 (2017): 761–74. http://dx.doi.org/10.1080/10298436.2017.1337119.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

ACODJI, Vodouhè. Pamphile, T. Emmanuel OLODO, and K. Valery DOKO. "Elaboration of a Cement Matrix Composite, Improved With the Pozzolan of Rice Husk Ash, Reinforced With Sugar Cane Bagasse Fibers." International Journal of Research and Review 7, no. 6 (2020): 263–70. https://doi.org/10.5281/zenodo.3952322.

Full text
Abstract:
In this work it’s developed a multifunctional eco-material based on short fibers of sugar cane with a cement matrix improved with the rice husk pozzolana. The properties of the sand were analyzed by particle size, fineness modulus and sand equivalence tests. The rice husk pozzolan was obtained by calcination at 600 ° C, the temperature at which the fire loss becomes constant, until calcination of the ash, which was determined by Thermogravimetric Analysis. The characterization of the ash was determined by the X-ray Diffraction and Fluorexence X tests to obtain its mineralogical const
APA, Harvard, Vancouver, ISO, and other styles
43

Martirena Hernández, J. F., B. Middendorf, M. Gehrke, and H. Budelmann. "Use of wastes of the sugar industry as pozzolana in lime-pozzolana binders: study of the reaction." Cement and Concrete Research 28, no. 11 (1998): 1525–36. http://dx.doi.org/10.1016/s0008-8846(98)00130-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
44

Tahina Rabeharitsara, Andry, Marie Nicole Rabemananjara, and Nambinina Richard Randriana. "Black Citric Acid Polymer (PN) Pozzolana Activated - Na-PN-Pozzolana-CE Material Synthesis Tested As Cationic Exchanger." American Journal of Applied Chemistry 7, no. 6 (2019): 145. http://dx.doi.org/10.11648/j.ajac.20190706.11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Surana, M. S., and S. N. Joshi. "Optimization of Conditions for the Determination of Pozzolana Content in Portland Pozzolana Cement and other Blended Cements." Transactions of the Indian Ceramic Society 48, no. 1 (1989): 11–14. http://dx.doi.org/10.1080/0371750x.1989.10822929.

Full text
APA, Harvard, Vancouver, ISO, and other styles
46

Torre Carrillo, Ana Victoria, Pedro Espinoza Haro, Sorin Gudberto Ramirez Curi, Isabel Moromi Nakata, Luisa Esther Shuan Lucas, and Matías Ramos Jesús Aldair. "Prediction of capillary absorption and compressive strength, applying multiple linear regression and artificial neural networks in concrete with natural pozzolana addition." Revista de la construcción 23, no. 3 (2024): 568–86. https://doi.org/10.7764/rdlc.23.3.568.

Full text
Abstract:
Cement is the fundamental binder of concrete, and its manufacture has a significant impact on the environment; therefore, it is necessary to look for eco-sustainable alternatives, including additions such as natural pozzolana, which affect the internal matrix of concrete and therefore the compressive strength and capillary absorption of concrete. In this context, prediction models for capillary absorption and compressive strength of concrete with pozzolana additions have been determined by applying linear multiple regression tools and artificial neural networks which will help reduce laborator
APA, Harvard, Vancouver, ISO, and other styles
47

Yiğit, Ahmet, Furkan Türk, and Ülkü Sultan Keskin. "LIMESTONE AND NATURAL POZZOLAN BLENDED CEMENTS: EVALUATING SULFATE RESISTANCE FOR SUSTAINABLE CONSTRUCTION." Konya Journal of Engineering Sciences 13, no. 2 (2025): 524–34. https://doi.org/10.36306/konjes.1596875.

Full text
Abstract:
This study aims to compare the behavior of ordinary Portland cement, sulfate resistant cement, natural pozzolan blended cement and limestone blended cement, produced in the same strength class as Portland clinker, under the influence of sulfate. For this purpose, five different cements were produced in Konya Cement production facilities. Characterization and sulfate tests were carried out on the cements. The strengths of the cements blended with limestone and natural pozzolan were determined in different sulfate environments and under normal curing conditions, and their behavior under sulfate
APA, Harvard, Vancouver, ISO, and other styles
48

Kherbhek, Rahaf. "Hygrothermal analysis of internal insulation systems of brick historical walls using numerical simulation." Stavební obzor - Civil Engineering Journal 33, no. 4 (2024): 452–66. https://doi.org/10.14311/cej.2024.04.0031.

Full text
Abstract:
A numerical calculation is used for hygrothermal assessment of different wall assemblies. Interior thermal insulation systems using lime-pozzolana, calcium silicate, vacuum insulation panels and mineral wool which are applied on a common historical brick wall structure are analyzed. A comparison between vapor-open and vapor-tight systems is conducted. Moisture and temperature fields in the insulated wall and in the wooden beam-heads that are embedded in the insulated walls are carried out using WUFI and 3D Cube. The best alternative found is vapor-open system on the basis of lime-pozzolana.
APA, Harvard, Vancouver, ISO, and other styles
49

El Majid, Ahlam, Khadija Baba, and Yassine Razzouk. "Comparative analysis of swelling mitigation in marl and clay soils: natural plant fibers (Alfa, jute, sisal) vs. polypropylene fiber with lime-pozzolana cement utilizing proctor compaction." Bulletin of the Tomsk Polytechnic University Geo Assets Engineering 335, no. 4 (2024): 52–63. http://dx.doi.org/10.18799/24131830/2024/4/4410.

Full text
Abstract:
This study offers a comparative assessment of two methodologies for mitigating soil swelling in marl and clay soils. The methods under investigation include the use of natural plant fibers (Alfa, jute, sisal) and polypropylene fibers in combination with lime-pozzolana cement. Laboratory tests, including Proctor compaction tests, and swell potential assessments, were conducted to assess the effectiveness of each method. The findings reveal that both natural plant fibers and polypropylene fibers, when combined with lime-pozzolana cement, effectively reduce soil swelling. The study underscores th
APA, Harvard, Vancouver, ISO, and other styles
50

Santana, Juan J., Natalia Rodríguez-Brito, Concepción Blanco-Peñalver, Vicente F. Mena, and Ricardo M. Souto. "Durability of Reinforced Concrete with Additions of Natural Pozzolans of Volcanic Origin." Materials 15, no. 23 (2022): 8352. http://dx.doi.org/10.3390/ma15238352.

Full text
Abstract:
In this work, the properties of concrete modified with dosages of natural pozzolans (NP) in substitution of cement or superfine aggregates were evaluated. Proportions of 20/80 pozzolan/cement or pozzolan/superfine aggregates were selected for the additions of quarry and tuff pozzolans. Pozzolanic activity, durability, compressive strength, characteristic resistance, settling consistency, density, electrical resistivity, depth of water penetration, accessible porosity, and carbonation and chloride penetration were determined for the resulting concrete mixtures, and they were subsequently compar
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Pozzolana' for other source types:
Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography