Results 21 to 30 of about 375,303 (201)

Characterisation of Fly Ash and Relevance of Pozzolanic Reactivity

open access: yesAdvanced Materials Research, 2011
ABSTRACT It is a very well known fact that the use of fly ash in masonry and concrete make the structures durable. Properties of Fly Ash depend upon coal source. For acceptability of fly ash in cement, mortar and concrete various specifications and standards are available.
Anant M. Pande   +2 more
openaire   +2 more sources

Physical properties and reactivity of pozzolans, and their influence on the properties of lime–pozzolan pastes [PDF]

open access: yesMaterials and Structures, 2010
This paper studies how pozzolan properties including particle size, specific surface, chemical and mineral composition, amorphousness and water demand, affect their reactivity as well as the strength of lime–pozzolan pastes. Reactivity was evaluated with chemical, mechanical and mineralogical methods.
WALKER, ROSANNE, PAVIA, SARA
openaire   +3 more sources

Comparing common methods of assessing pozzolanic reactivity assessment of pozzolanic reactivity for grinding spent bleaching earth ash (SBEA) [PDF]

open access: yes, 2022
In order to reduce greenhouse gas emissions due to natural anaerobic degradation, SBE was used as a cement substituent on concrete, in addition, helping in improving the quality of the concrete formed. The significance of this study is to learn about the
Chea Wan Chin
core   +1 more source

Pozzolanic Activity Assessment of LUSI (LUmpur SIdoarjo) Mud in Semi High Volume Pozzolanic Mortar [PDF]

open access: yes, 2012
LUSI mud obtained from the mud volcano in Sidoarjo, Indonesia, is a viable aluminosilicate material to be utilized as pozzolanic material. LUSI is an abbreviation of the local name of the mud, i.e., Lumpur Sidoarjo, meaning Sidoarjo mud.
Gunadi M. Wibowo   +9 more
core   +1 more source

Evaluation the pozzolanic reactivity of sonochemically fabricated nano natural pozzolan

open access: yesUltrasonics Sonochemistry, 2012
Natural pozzolans are appropriate supplementary cementitious materials in cement and concrete industry. A simple sonochemical method was developed to synthesize nanostructures of natural pozzolan. Chemical composition, crystallinity, morphology and reactivity of the natural pozzolan samples were compared before and after the sonochemical process, by ...
Azadeh, Askarinejad   +2 more
openaire   +2 more sources

Assessing regional variability in chemical composition and pozzolanic reactivity of corn stover ash in the United States

open access: yesCement, 2023
This study examines the regional variability in the chemical composition and pozzolanic reactivity of corn stover ash (CSA) produced from corn stover samples collected from different locations in the U.S.
Mahmoud Shakouri, Jiong Hu, Cody Stolle
doaj   +1 more source

Mechanical Transformation of Fly Ash toward Its Utilization in Cemented Paste Backfill

open access: yesAdvances in Civil Engineering, 2021
Fly ash (FA) showed low reactivity when being used to prepare the binder for cemented paste backfill (CPB). In the present work, wet-grinding treatment was used to increase the pozzolanic reactivity of FA and promote its sustainable utilization.
Haijun Wang, Yun Duan
doaj   +1 more source

Milling time influence of ultrafine treated rice husk ash to pozzolanic reactivity in portlandite [PDF]

open access: yes, 2016
: An investigation of pozzolanic reactivity of ultrafine treated rice husk ash (UFTRHA) was eval-uated using electrical conductivity measurement. This paper is aimed to identify the effect of grinding duration via high speed milling process to the ...
Saad, Siti Asmahani   +3 more
core   +1 more source

Enhancement of the pozzolanic activity of natural clays by mechanochemical activation

open access: yes, 2022
Replacement of cement with supplementary cementitious materials (SCMs) is a proven method to reduce clinker in cement and contribute to decreased CO2 emissions.
Delogu, Francesco   +19 more
core   +2 more sources

Estimation of non-traditional supplementary cementitious materials potential to prevent alkali-silica reaction using pozzolanic reactivity and bulk resistivity

open access: yes, 2022
Relationships between supplementary cementitious material (SCM) pozzolanic reactivity, bulk electrical resistivity, and alkali-silica reaction expansion were examined for traditional and non-traditional SCMs using the modified R3 test, bulk resistivity ...
Wang, Ying   +4 more
core   +1 more source

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