NDLI: Hydration kinetics of composite binder containing fly ash at different temperatures

Content Provider	Springer Nature Link
Author	Han, Fanghui Zhang, Zengqi Liu, Juanhong Yan, Peiyu
Copyright Year	2016
Abstract	Fly ash has been widely used as supplementary cementitious material in concrete industry. Hydration mechanism of composite binder containing fly ash is much more complicated due to the mutual effect of the hydration of cement and the pozzolanic reaction of fly ash. This paper involves the hydration kinetics of composite binder containing up to 65 % of fly ash and comparison of the results with data on composite binder containing slag that are previously published. The hydration heat evolution rate and cumulative hydration heat of composite binder containing fly ash were measured at 298, 318 and 333 K with an isothermal calorimeter. Based on the hydration kinetics model, three hydration processes, namely nucleation and crystal growth (NG), interactions at phase boundaries (I) and diffusion (D) were characterized, the relationship between the hydration rate and hydration degree was discussed at different stages, and kinetics parameters, n, K and E $_{a}$, were calculated and analyzed. Results show that the hydration heat evolution rate and cumulative hydration heat of composite binder obviously decrease with increasing the replacement ratio of fly ash. Elevated temperatures promote the hydration process, especially for composite binder containing high amount of fly ash. The kinetics model could simulate the hydration process of composite binder containing no more than 65 % of fly ash, whose hydration process sequence is NG → I → D at 298 and 318 K, but it becomes NG → D at 333 K. Fly ash has relatively smaller effect on the overall reaction of composite binder than slag. The reaction rates of composite binder containing fly ash at different stages are higher than those of composite binder containing slag at the same replacement ratio. The value of E $_{a}$ for the overall reaction of composite binder decreases first and then increases with increasing the content of fly ash, and it is lower than that of composite binder containing slag at the same replacement ratio.
Starting Page	1691
Ending Page	1703
Page Count	13
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	124
Issue Number	3
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-02-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Composite binder Fly ash Hydration Kinetics Temperature Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Hydration kinetics of composite binder containing slag at different temperatures

Effect of water-to-binder ratio on the hydration kinetics of composite binder containing slag or fly ash

A comparison of hydration properties of cement–low quality fly ash binder and cement–limestone powder binder

Early hydration properties of composite binder containing limestone powder with different finenesses

Investigation of early hydration of high aluminate cement-based binder at different ambient temperatures

Fast physics-chemical characterization of fly ash

Investigations of the influence of different fly ashes on cement hydration

Isothermal crystallization kinetics of fly ash filled iso-polypropylene composite- and a new physical approach

Influences of fly ash and fluorgypsum on the hydration heat and compressive strength of cement

Hydration kinetics of composite binder containing fly ash at different temperatures

Similar Documents

Hydration kinetics of composite binder containing slag at different temperatures

Effect of water-to-binder ratio on the hydration kinetics of composite binder containing slag or fly ash

A comparison of hydration properties of cement–low quality fly ash binder and cement–limestone powder binder

Early hydration properties of composite binder containing limestone powder with different finenesses

Investigation of early hydration of high aluminate cement-based binder at different ambient temperatures

Fast physics-chemical characterization of fly ash

Investigations of the influence of different fly ashes on cement hydration

Isothermal crystallization kinetics of fly ash filled iso-polypropylene composite- and a new physical approach

Influences of fly ash and fluorgypsum on the hydration heat and compressive strength of cement

Hydration kinetics of composite binder containing fly ash at different temperatures