Results 101 to 110 of about 4,574,504 (206)

Natural pozzolan-and granulated blast furnace slag-based binary geopolymers

open access: yesMateriales de Construccion, 2016
This study describes the synthesis at ambient temperature (25±3 °C) of binary geopolymer systems based on natural volcanic pozzolan and granulated blast furnace slag. Na2SiO3 and NaOH were used as alkaline activators.
R. A. Robayo   +2 more
doaj   +1 more source

Characterization of an Algerian natural pozzolan for its use in eco-efficient cement

open access: yes, 2015
WOS:000367756300007International audienceThe paper presents the characterisation of an Algerian natural pozzolan (NP) intended to for use in cement-based materials. The experimental programme was based on different tests on paste and mortar.
Khelafi, H., Kaid, N., Cyr, Martin
core   +2 more sources

Natural pozzolan as a novel heterogeneous catalyst for the synthesis of alkylaminophenols

open access: yes
The development of sustainable catalysts from natural materials, such as pozzolan, represents a promising strategy in green chemistry. The pozzolan studied was subjected to multi-technique characterization (XRD, FTIR, BET, and SEM) to establish its ...
Djebli, Abdelkarim   +4 more
core   +1 more source

Enhancing the Activation of Saudi Natural Pozzolan Using Thermal, Mechanical, Chemical, and Hybrid Treatment Approaches

open access: yesBuildings
Saudi Natural Pozzolan (SNP) can be processed and used in construction as a partial replacement for Ordinary Portland Cement (OPC). Its use as a supplementary cementitious material supports more sustainable and eco-friendly building practices. This study
Ardhymanto Am Tanjung   +2 more
doaj   +1 more source

Prediction of Efficiency Factor of Natural Pozzolan by the Use of an Artificial Neural Network [PDF]

open access: yes, 2014
Because of the abundance of the mineral additives and the great variations on their physical and chemical characteristics, the development of a general concept for their use out of concrete is required. In this study, the concept of the efficiency factor
Mohamed, Ghrici   +2 more
core  

The Effect of Local Supplementary Cementitious Materials on the Cracking Sensitivity of Cement-Based Materials Under an Arid Climate: A Case Study Using Djebel Béchar Limestone

open access: yesBuildings
Early-age cracking severely limits concrete durability in hot, arid environments due to rapid plastic and drying shrinkage. This study evaluates the cracking sensitivity of cement-based materials incorporating four local supplementary cementitious ...
Ilham Aguida Bella   +3 more
doaj   +1 more source

Alkali-Silica Reactivity of Mortars Containing Natural Pozzolan

open access: yes, 2019
Alkali-silica reactivity is one of the most recognized deleterious phenomena in Portland cement concrete resulting in cracks, spalling, and other deleterious mechanisms.
Kian, Arash
core   +1 more source

Research on the long-term strength development of Datça Pozzolan-based geopolymer

open access: yesJournal of Sustainable Construction Materials and Technologies
This study examined the influence of long-term curing duration on the properties of geopoly- mers produced through the geopolymerization reaction between Datça Pozzolan and sodium silicate and potassium hydroxide solutions.
Leyla Tanaçan, Kübra Ekiz Barış
doaj   +1 more source

The Correlation of Workability and Mechanical Strength in air lime binders with different aggregates and pozzolan

open access: yes, 2021
Degree project for Master of Science with a major in Conservation 2021, 60 HEC Second Cycle 2021:4In this study are investigated two air lime binders common in conservation practice.
Ioanna Dedousi, Natalia
core   +1 more source

Harnessing Natural Pozzolan for Sustainable Heating and Cooling: Thermal Performance and Building Efficiency in Moroccan Climates

open access: yesBuildings
The need to construct environmentally friendly buildings to meet current environmental and ecological standards is urgent. This study introduces a new multi-layer construction material with two outer layers of ordinary mortar and an inner layer of a ...
Khadija Annaba   +8 more
doaj   +1 more source

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