Results 11 to 20 of about 42 (40)

Is the clay "exchange capacity" concept wholly applicable to pozzolans?

Materiales de Construccion, 2004
One of the most characteristic properties of clays is their "cation exchange capacity", otherwise known as their "exchange capacity ". The research reported in this article shows that for various reasons some natural and artificial pozzolans exhibit this
R. Talero
doaj   +1 more source

Performance of silicic pozzolans and Portland cements in their behavior in front of gypsum attack as determined by ASTM C 452-68

Materiales de Construccion, 2013
For this study, ASTM C 452-68 testing was conducted for two years on 54 POZC-silica fume (SF) or diatomites (D and N) (=Z pozzolans), were tested for 2 years, by ASTM C 452-68 method, having determined to their specimens their Vcl(=ΔL(%)/day) .
R. Talero
doaj   +1 more source

Assessment of select direct and indirect pozzolanic reactivity test outcomes with robust regression and ranking analysis

Case Studies in Construction Materials
The use of pozzolanic materials as a sustainable partial replacement option for portland cement in concrete has been extensively studied over the last few decades. This study aimed to assess the pozzolanic reactivity of seven different powdered materials:
Farzaneh Elyasigorji, Habib Tabatabai
doaj   +1 more source

Characterization of sugar cane bagasse ash as supplementary material for Portland cement

Ingeniería e Investigación, 2014
Sugar Cane Bagasse is a by-product of the sugar agroindustry; it is partly used as fuel. However, bagasse ash (SCBA) is considered waste, which creates a disposal problem. Furthermore, if sugar cane bagasse is burned under controlled conditions, the SCBA
Janneth Torres Agredo, Ruby Mejía de Gutiérrez, Camilo E. Escandón Giraldo, Luis Octavio González Salcedo   +3 more
doaj   +1 more source

Enhancing material properties of agro-industrial waste sugarcane bagasse ash—Way towards sustainable development

Sustainable Futures
The present study deals with a comprehensive characterization of Sugarcane bagasse ash (SCBA) and its effect on pozzolanic reactivity. Utilizing SCBA as pozzolanic material reduces the ash disposal problem and enhance the properties of cementitious ...
Yogitha Bayapureddy, Karthikeyan Muniraj, Muni reddy Gangireddy Mutukuru   +2 more
doaj   +1 more source

Volcanic Ash from Tajogaite Volcano (La Palma Island, Spain) as Pozzolanic Material in Lime and Cement Blends

Buildings
The eruption of the Tajogaite volcano (Cumbre Vieja) on La Palma Island (Spain) generated a significant amount of volcanic ash (VA). This study evaluates the valorisation of VA, considered a “natural waste,” as a partial substitute for Portland cement or
Lourdes Soriano, Stanis Barashkin, Jordi Payá, María Victoria Borrachero, José Monzó, Ana María Macián, Mauro Mitsuuchi Tashima   +6 more
doaj   +1 more source

Electrical Conductivity and pH Tests for Rapid and Direct Assessment of Pozzolanic Reactivity

International Journal of Concrete Structures and Materials
This study investigates the effectiveness of rapid (6-h) pH and electrical conductivity measurements of a lime-pozzolan solution for direct assessment of reactivity during initial screening of pozzolanic materials.
Farzaneh Elyasigorji, Benjamin Church, Habib Tabatabai   +2 more
doaj   +1 more source

Sample Origin Effect on Chemical Reactivity of Tajogaite Volcanic Ashes for Ancient Mortar Repair

Sustainable Chemistry
Volcanic ashes (VA) ejected by the Tajogaite Volcano were studied to determine their potential as pozzolanic materials for construction applications.
Imren Basar, David Torrens-Martín, Lucía Fernández-Carrasco, Cristhian Caiza, Joan Martínez-Bofill, Marcel Hürlimann   +5 more
doaj   +1 more source

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Application of Frattini test and Saturated lime test to assess pozzolanic activity of different aluminosilicate materials

2019
In this study the pozzolanic activity of aluminosilicate materials (waste container glass, natural zeolite and waste building brick) with particles size
Barbir, Damir, Dabić, Pero
openaire   +2 more sources

POZZOLANIC ACTIVITY OF LOW-QUALITY CLAYS BY FRATTINI TEST

Proscience, 2023
openaire   +1 more source