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Potential utilization of sugarcane bagasse ash for developing alkali-activated materials

Le, Duc-Hien / Sheen, Yeong-Nain / Lam, My Ngoc-Tra

Sugarcane bagasse ash (SBA) is a by-product generated from cogenerations in sugar industries. This study is aimed at investigating on performance of alkali-activated binder using SBA and ground blast furnace slag (GBFS). The proposed mixtures were developed by changing GBFS/SBA ratios in blends (i.e. 100/0, 90/10, 80/20, 70/30, and 60/40) and silicate moduli (M_s = 0.6, 0.8, 1.2). Several results are highlighted: (1) alkali-activated GBFS/SBA pastes perform a quick hardening with an increase in M_s; (2) testing specimens cured in room–air ambient have the 28-day compressive strength beyond 110 MPa; and the 90/10 one shows the highest mechanical strength and manifested the best sulfate resistance and the lowest water absorption; (3) magnitude of drying shrinkage is smallest for 80/20 sample and following by the 90/10 sample. In summary, with balance of fresh behavior, strength, and shrinkage, a substitution up to 20% SBA could be appropriate to manufacture a sustainable binder.

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Potential utilization of sugarcane bagasse ash for developing alkali-activated materials

Le, Duc-Hien / Sheen, Yeong-Nain / Lam, My Ngoc-Tra

Sugarcane bagasse ash (SBA) is a by-product generated from cogenerations in sugar industries. This study is aimed at investigating on performance of alkali-activated binder using SBA and ground blast furnace slag (GBFS). The proposed mixtures were developed by changing GBFS/SBA ratios in blends (i.e. 100/0, 90/10, 80/20, 70/30, and 60/40) and silicate moduli (M_s = 0.6, 0.8, 1.2). Several results are highlighted: (1) alkali-activated GBFS/SBA pastes perform a quick hardening with an increase in M_s; (2) testing specimens cured in room–air ambient have the 28-day compressive strength beyond 110 MPa; and the 90/10 one shows the highest mechanical strength and manifested the best sulfate resistance and the lowest water absorption; (3) magnitude of drying shrinkage is smallest for 80/20 sample and following by the 90/10 sample. In summary, with balance of fresh behavior, strength, and shrinkage, a substitution up to 20% SBA could be appropriate to manufacture a sustainable binder.

Potential utilization of sugarcane bagasse ash for developing alkali-activated materials

Le, Duc-Hien / Sheen, Yeong-Nain / Lam, My Ngoc-Tra

Sugarcane bagasse ash (SBA) is a by-product generated from cogenerations in sugar industries. This study is aimed at investigating on performance of alkali-activated binder using SBA and ground blast furnace slag (GBFS). The proposed mixtures were developed by changing GBFS/SBA ratios in blends (i.e. 100/0, 90/10, 80/20, 70/30, and 60/40) and silicate moduli (M_s = 0.6, 0.8, 1.2). Several results are highlighted: (1) alkali-activated GBFS/SBA pastes perform a quick hardening with an increase in M_s; (2) testing specimens cured in room–air ambient have the 28-day compressive strength beyond 110 MPa; and the 90/10 one shows the highest mechanical strength and manifested the best sulfate resistance and the lowest water absorption; (3) magnitude of drying shrinkage is smallest for 80/20 sample and following by the 90/10 sample. In summary, with balance of fresh behavior, strength, and shrinkage, a substitution up to 20% SBA could be appropriate to manufacture a sustainable binder.

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Title:

Potential utilization of sugarcane bagasse ash for developing alkali-activated materials

Contributors:

Le, Duc-Hien (author) / Sheen, Yeong-Nain (author) / Lam, My Ngoc-Tra (author)

Published in:

Journal of Sustainable Cement-Based Materials ; 11 ; 199-209

Publication date:

2022-05-04

Size:

11 pages

ISSN:

2165-0373 , 2165-0381

DOI:

https://doi.org/10.1080/21650373.2021.1920513

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

Alkali-activated material , sugarcane bagasse ash , workability , compressive strength , sulfate resistance

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