Results 41 to 50 of about 6,053,575 (214)

The Determination of Pozzolanic Activity: Comparison of ASTM and EN Strength Activity Methods and Electrical Resistivity

, 2022
Copyright © 2022 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959.Class F fly ash from both fresh and stored sources, along with finely milled sand and limestone were tested by conventional strength index ...
GÜLCAN, ERGİN, Robl, Thomas, Jewell, Robert, Duvallet, Tristana, Oberlink, Anne, Rathbone, Robert   +5 more
core   +1 more source

Influence of processing methods on the strength activity index for sludge as a supplementary cementitious material

Case Studies in Construction Materials
Utilizing activated sludge as a partial substitute for cement can both curb cement consumption and address sludge reuse in an economically and environmentally-friendly manner.
Youzhi Yang, Ziye Kang, Zhuofan Wu, Jinrui Zhang, Dongshuai Hou, Biqin Dong   +5 more
doaj   +1 more source

Fineness Effect on Pozzolanic Activity of Cu-Ni Slag in Cemented Tailing Backfill

Advances in Materials Science and Engineering, 2020
This paper presents the experimental results of the fineness effect on the pozzolanic activity of Cu-Ni slag in cemented tailing backfill. Cement paste and cemented tailing backfill samples that without or contain Cu-Ni slag with various grinding times ...
Wenyuan Xu, Xiaocong Yang, Wenchen Li, Lijie Guo   +3 more
doaj   +1 more source

Influence of calcination temperature on the durability of metakaolin concrete and limitations of conventional testing methods

Structural Concrete, EarlyView.
Abstract Incorporating metakaolin (MK) as a partial cement replacement offers a viable pathway to reduce carbon emissions while improving concrete performance. However, its durability behavior remains inconsistent, and the applicability of durability test methods to MK‐based concrete is not well established.
Mayen J. Geu, Yan Zhuge, Xing Ma, Thong M. Pham   +3 more
wiley   +1 more source

High temperature fracture behavior and damage evolution of recycled aggregate concrete produced from metakaolin modified parent concrete

Structural Concrete, EarlyView.
Abstract The increasing use of recycled aggregate concrete (RAC) offers significant environmental benefits by reducing construction and demolition waste; however, its fracture performance and damage evolution under elevated temperatures remain insufficiently understood, particularly when recycled aggregates are derived from metakaolin modified parent ...
Zubair Yousuf, Viktor Hlavička
wiley   +1 more source

Pozzolanic activity assessment of calcined clays with complex minerals content

, 2018
The present work deals with the possibilities for using calcined clays of different compositions and mineral content as pozzolanic admixtures to cement mortars.
Branimir Bratoev, Jordan Ninov, Alexander Lenchev, Ivan Doykov   +3 more
core   +1 more source

Evaluation of the pozzolanic activity of red ceramic waste using mechanical and physicochemical methods

Cerâmica
Alternative cementitious materials can potentially reduce the environmental impact of the extraction of lime and the hazardous production of Portland cement.
R. A. Araújo, A. L. R. de Menezes, K. C. Cabral, A. K. C. Nóbrega, A. E. Martinelli, K. G. M. Dantas   +5 more
doaj   +1 more source

Achieving sustainable and durable concrete using high‐volume SiO2: Engineering properties, environmental and economic benefits

Structural Concrete, EarlyView.
Abstract This study explores the potential of high‐volume amorphous silica (SiO2) replacement for ordinary Portland cement (OPC) in concrete to reduce carbon emissions. Amorphous SiO2, such as silica fume (SF) and CO2 mineralization‐produced Si‐rich gel, offers superior properties to concrete but is under‐researched for its use in concrete with high ...
Xinlin Ji, Lijie Chen, R. K. L. Su
wiley   +1 more source

Avaliação da lama vermelha como material pozolânico em substituição ao cimento para produção de argamassas [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Civil, Florianópolis, 2009.A propriedade pozolânica da lama vermelha, bem como a sua avaliação ambiental, quanto aos metais ...
Manfroi, Eliz Paula
core  

Pozzolanic Activity Diagnostics of Fly Ash for Portland Cement

, 2016
The work deals with the analysis and evaluation of different methods of pozzolanic activity determination in order to rationally use ash in cement. The most optimum diagnostic method has been suggested.
null null, Galyna Kotsay
core   +1 more source