Singh, G V P B and K V L, Subramaniam
(2017)
Role of Reactive Alumina and Reactive Oxide Ratios on Strength Development in Alakaline Activation of Low-Calcium Fly Ash.
In: 71st RILEM Annual Week & ICACMS, 03-08,September, 2017, Chennai, IIT Madras.
Abstract
The role of reactive
alumina and process varia
bles such as sodium content and molarity on
alkaline activation of different low calcium fly
ashes are explored. Reactive alumina content
of a fly ash is the key parameter which dete
rmines the maximum compressive strength
achieved from the alkaline activati
on. The oxide ratios in the activated system, based on the
total silica in the system consisting of the re
active silica contributed by fly ash and the
reactive alumina in fly ash are shown to provide
consistent results for achieving the highest
strength. A method called XRD-based direct
decomposition is used
to determine the
unreacted glassy content and amorphous reaction product in the system. The strength gain in
the system is directly related to a decrease
in the unreacted fly ash glassy content and an
increase in the reaction product content in the system.
[error in script]
| IITH Creators: |
| IITH Creators | ORCiD |
|---|
| K V L, Subramaniam | http://orcid.org/0000-0002-5995-0911 |
|
| Item Type: |
Conference or Workshop Item
(Paper)
|
| Uncontrolled Keywords: |
Alkaline activation, Reactive Alumina, R
eactive Silica, Molarity, Unreacted
glassy content, geopolymer |
| Subjects: |
Civil Engineering |
| Divisions: |
Department of Civil Engineering |
| Depositing User: |
Team Library
|
| Date Deposited: |
10 Oct 2017 10:01 |
| Last Modified: |
10 Oct 2017 10:01 |
| URI: |
http://raiithold.iith.ac.in/id/eprint/3612 |
| Publisher URL: |
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| Related URLs: |
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