TY - JOUR
T1 - Effects of alkali-activated waste binder in soil stabilization
AU - Teing, Tan Teing
AU - Huat, Bujang B.K.
AU - Shukla, Sanjay Kumar
AU - Anggraini, Vivi
AU - Nahazanan, Haslinda
N1 - Funding Information:
First and foremost, the authors would like to express their gratefulness for the financial assistance provided by the Research Management Center (RMC) of University Putra Malaysia under FRGS. Also, the authors would like to extend their gratitude to Monash University Malaysia for their support during the FE-SEM and EDX analyses.
Publisher Copyright:
© Int. J. of GEOMATE.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/7
Y1 - 2019/7
N2 - Generally, alkali-activated binders have received much attention in recent years due to their energy efficiency, environmentally friendly process, and excellent engineering properties. With respect to this fact, this study aims to investigate the effects of alkaline activation reactions on residual soil by using different percentages of fly ash as a precursor. Precisely, fly ash was incorporated with potassium hydroxide (10M) in order to stabilize the soil and enhance its expediency for various forms of construction. In particular, this experimental study was focused on determining the mechanical performance of stabilized soil. Evidently, the results showed that the different percentages of fly ash (40%, 50%, 60% and 70% by weight) used to stabilize the residual soil affected the unconfined compressive strength of the soil matrix. Also, it was observed that the compressive strength of soil increased progressively with the addition of fly ash. However, the longer the curing period of the stabilized soils, the higher the unconfined compressive strength of the soil. In fact, the microstructural analysis which employed scanning electron microscopy (SEM) revealed the material modifications that can be related to the strength behavior.
AB - Generally, alkali-activated binders have received much attention in recent years due to their energy efficiency, environmentally friendly process, and excellent engineering properties. With respect to this fact, this study aims to investigate the effects of alkaline activation reactions on residual soil by using different percentages of fly ash as a precursor. Precisely, fly ash was incorporated with potassium hydroxide (10M) in order to stabilize the soil and enhance its expediency for various forms of construction. In particular, this experimental study was focused on determining the mechanical performance of stabilized soil. Evidently, the results showed that the different percentages of fly ash (40%, 50%, 60% and 70% by weight) used to stabilize the residual soil affected the unconfined compressive strength of the soil matrix. Also, it was observed that the compressive strength of soil increased progressively with the addition of fly ash. However, the longer the curing period of the stabilized soils, the higher the unconfined compressive strength of the soil. In fact, the microstructural analysis which employed scanning electron microscopy (SEM) revealed the material modifications that can be related to the strength behavior.
KW - Alkaline activation
KW - Fly ash
KW - Residual soil
KW - Soil stabilization
KW - Unconfined compressive strength
UR - http://www.scopus.com/inward/record.url?scp=85067003891&partnerID=8YFLogxK
U2 - 10.21660/2019.59.8161
DO - 10.21660/2019.59.8161
M3 - Article
AN - SCOPUS:85067003891
SN - 2186-2982
VL - 17
SP - 82
EP - 89
JO - International Journal of GEOMATE
JF - International Journal of GEOMATE
IS - 59
ER -
