Results 21 to 30 of about 1,990 (176)

Evaluation of Pozzolanic activity and lime reactivity of fly ash, GGBS, mica powder and pumice as binders [PDF]

E3S Web of Conferences
This article presents the effect of the pozzolanic activity and lime reactivity of various siliceous materials, like fly ash, GGBS (Ground granulated blast furnace slag), mica and pumice powders.
Ramanujam I.V. Ranga, Reddy K. Ramachandra, Ramana N. Venkata   +2 more
doaj   +1 more source

Increasing the Pozzolanic Reactivity of Recovered CDW Cement Stone by Mechanical Activation

Materials Proceedings, 2023
The study focuses on enhancing the reactivity of the fine size fraction of construction and demolition waste (CDW) by mechanical activation in a stirred media mill. Systematic measurements were carried out to monitor the change in cement stone reactivity.
Roland Szabó, Máté Szűcs, Mária Ambrus, Gábor Mucsi   +3 more
doaj   +1 more source

Effect of Fineness and Heat Treatment on the Pozzolanic Activity of Natural Volcanic Ash for Its Utilization as Supplementary Cementitious Materials

Crystals, 2022
The aim of this study was to investigate the influence of fineness and heat-treatment on the pozzolanic and engineering properties of volcanic ash. To this end, two different fineness levels of volcanic ash, ultra-fine (VAF) and fine (VA), without and ...
Kaffayatullah Khan, Muhammad Nasir Amin, Muhammad Usman, Muhammad Imran, Majdi Adel Al-Faiad, Faisal I. Shalabi   +5 more
doaj   +1 more source

Assessment of Pozzolanic Reactivity for Calcined Spent Bleaching Earth Ash (SBEA) using Strength Activity Index (SAI), Frattini Test and X-Ray Diffraction (XRD) [PDF]

MATEC Web of Conferences
This research briefly investigates and compares three different and distinct methods of assessing the pozzolanic reactivity of a cementitious replacement material, Spent Bleaching Earth Ash (SBEA).
Lim Chung Han, Anwar Syaza Syazvina
doaj   +1 more source

Effect of fluorite addition on the reactivity of a calcined treated spent pot lining in cementitious materials

Cement, 2023
Treating SPL by the low caustic leaching and liming process generates an inert nonhazardous residue called LCLL Ash and a fluorite byproduct Calcined LCLL Ash that is ground into a fine powder demonstrates pozzolanic behavior in cement. The effect of the
Victor Brial, Hang Tran, Luca Sorelli, David Conciatori, Claudiane M. Ouellet-Plamondon   +4 more
doaj   +1 more source

Valorization of mud from Fergoug dam in manufacturing mortars

Case Studies in Construction Materials, 2016
The production of calcined mud, with pozzolanic properties, from the large quantities of sediments dredged from Algerian dams, could be a good opportunity for the formulation of high performance mortars and pozzolanic concretes, with lower costs and less
L. Laoufi, Y. Senhadji, A. Benazzouk
doaj   +1 more source

Recent developments in reactivity testing of supplementary cementitious materials

RILEM Technical Letters, 2021
Identification and rapid characterization of novel supplementary cementitious materials (SCMs) is a critical need, driven by shortfalls in conventional SCMs. In this study, we present a discussion of recently developed reactivity tests – the R3 test, the
Prannoy Suraneni
doaj   +1 more source

Mechanical, rheological, and durability performances of GGBS‐based concrete for potential application to prestressed structures

Structural Concrete, EarlyView.
Abstract Ground granulated blast‐furnace slag (GGBS) is a widely used clinker substitute in concrete, recognized for its potential to significantly reduce environmental impacts. However, its application in prestressed concrete remains limited in several countries, mainly due to concerns regarding early‐age mechanical performance and long‐term ...
D. Rolando Baldiviezo, Leonardo Todisco, Cristina Argiz, Carmen Andrade, Amparo Moragues, Jaime C. Gálvez, Hugo Corres   +6 more
wiley   +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

Geopolymers as a Sustainable Chemical Platform: From Building Materials to Advanced Functional Applications

The Chemical Record, EarlyView.
Geopolymers are presented as a chemically programmable platform whose properties emerge from activation chemistry, nanoscale disorder, and interfacial design. The review highlights sustainability challenges, the shift toward nanoengineered and hybrid systems, and the rise of halloysite‐based architectures enabling tunable structures across scales for ...
Martina Maria Calvino, Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara   +4 more
wiley   +1 more source