Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C

N. Jambunathan; G. Li; Y. Liu; A. H. Korayem; Z. Pan; W. H. Duan; F. Collins; J. G. Sanjayan

Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C

N. Jambunathan, G. Li, Y. Liu, A. H. Korayem, Z. Pan, W. H. Duan, F. Collins, J. G. Sanjayan

School of Engineering, Design & Built Environment

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

Abstract

This paper presents a study on the evolution of strength and alteration microstructure of alkali-activated slag (AAS) pastes exposed to 50Â°C. Ground granulated blast furnace slag (GGBFS) was used as the starting material to prepare slags pastes which were then activated with a range of activators. The preliminary results from the study of these pastes are presented. It was found that all the pastes show a significantly strength loss after exposure to 50Â°C for 24 hours. This is independent on the activators used. The paste samples were further examined by X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM) and sorptivity tests. A hypothesis for strength loss is proposed based on the observations in change of microstructure. This hypothesis will be further validated by the study of the AAS pastes prepared by using phosphorus slag.

Original language	English
Title of host publication	Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012
Publisher	Monash University
Pages	367-372
Number of pages	6
ISBN (Print)	9780646585895
Publication status	Published - 2012
Event	International Composites Conference - Duration: 14 Nov 2012 → …

Conference

Conference	International Composites Conference
Period	14/11/12 → …

Cite this

Jambunathan, N., Li, G., Liu, Y., Korayem, A. H., Pan, Z., Duan, W. H., Collins, F., & Sanjayan, J. G. (2012). Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C. In Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012 (pp. 367-372). Monash University.

Jambunathan, N. ; Li, G. ; Liu, Y. et al. / Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C. Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012. Monash University, 2012. pp. 367-372

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title = "Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50{\^A}°C",

abstract = "This paper presents a study on the evolution of strength and alteration microstructure of alkali-activated slag (AAS) pastes exposed to 50{\^A}°C. Ground granulated blast furnace slag (GGBFS) was used as the starting material to prepare slags pastes which were then activated with a range of activators. The preliminary results from the study of these pastes are presented. It was found that all the pastes show a significantly strength loss after exposure to 50{\^A}°C for 24 hours. This is independent on the activators used. The paste samples were further examined by X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM) and sorptivity tests. A hypothesis for strength loss is proposed based on the observations in change of microstructure. This hypothesis will be further validated by the study of the AAS pastes prepared by using phosphorus slag.",

author = "N. Jambunathan and G. Li and Y. Liu and Korayem, {A. H.} and Z. Pan and Duan, {W. H.} and F. Collins and Sanjayan, {J. G.}",

year = "2012",

language = "English",

isbn = "9780646585895",

pages = "367--372",

booktitle = "Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012",

publisher = "Monash University",

note = "International Composites Conference ; Conference date: 14-11-2012",

}

Jambunathan, N, Li, G, Liu, Y, Korayem, AH, Pan, Z, Duan, WH, Collins, F & Sanjayan, JG 2012, Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C. in Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012. Monash University, pp. 367-372, International Composites Conference, 14/11/12.

Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C. / Jambunathan, N.; Li, G.; Liu, Y. et al.
Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012. Monash University, 2012. p. 367-372.

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

TY - GEN

T1 - Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C

AU - Jambunathan, N.

AU - Li, G.

AU - Liu, Y.

AU - Korayem, A. H.

AU - Pan, Z.

AU - Duan, W. H.

AU - Collins, F.

AU - Sanjayan, J. G.

PY - 2012

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N2 - This paper presents a study on the evolution of strength and alteration microstructure of alkali-activated slag (AAS) pastes exposed to 50Â°C. Ground granulated blast furnace slag (GGBFS) was used as the starting material to prepare slags pastes which were then activated with a range of activators. The preliminary results from the study of these pastes are presented. It was found that all the pastes show a significantly strength loss after exposure to 50Â°C for 24 hours. This is independent on the activators used. The paste samples were further examined by X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM) and sorptivity tests. A hypothesis for strength loss is proposed based on the observations in change of microstructure. This hypothesis will be further validated by the study of the AAS pastes prepared by using phosphorus slag.

AB - This paper presents a study on the evolution of strength and alteration microstructure of alkali-activated slag (AAS) pastes exposed to 50Â°C. Ground granulated blast furnace slag (GGBFS) was used as the starting material to prepare slags pastes which were then activated with a range of activators. The preliminary results from the study of these pastes are presented. It was found that all the pastes show a significantly strength loss after exposure to 50Â°C for 24 hours. This is independent on the activators used. The paste samples were further examined by X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM) and sorptivity tests. A hypothesis for strength loss is proposed based on the observations in change of microstructure. This hypothesis will be further validated by the study of the AAS pastes prepared by using phosphorus slag.

UR - http://handle.uws.edu.au:8081/1959.7/558554

UR - http://ecommerce.eng.monash.edu.au/categories.asp?cID=23

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BT - Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012

PB - Monash University

T2 - International Composites Conference

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ER -

Jambunathan N, Li G, Liu Y, Korayem AH, Pan Z, Duan WH et al. Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C. In Proceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012. Monash University. 2012. p. 367-372

Change in microstructure and compressive strength of alkali-activated slag paste at temperature exposure of 50Â°C

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