Development of controlled low strength material (CLSM) using self-cementitious flyash

Sanghyeong Lim; Hyunwook Choo; Woojin Lee; Changho Lee

Development of controlled low strength material (CLSM) using self-cementitious flyash

Sanghyeong Lim, Hyunwook Choo, Woojin Lee, Changho Lee

Research output: Contribution to conference › Paper › peer-review

Abstract

This experimental investigation aims at developing controlled low strength materials (CLSM) using a self-cementitious fly ash and bottom ash (aggregate). The fly ash and bottom ash specimen used in this study were obtained from a circulating fluidized bed combustion boiler (CFBC). To find the optimum mixing condition satisfying flow consistency and unconfined compression strength (UCS), the CLSM specimens were prepared under various mixing conditions, including varying aggregate types and fractions. Additionally, the prepared specimens were evaluated through scanning electron microscope and X-ray diffraction (XRD). The results of this study demonstrate that the UCS ranges from 325 kPa to 1855 kPa, and the water content satisfying flow consistency ranges from 42 to 85%. The USC increases with increasing the fraction of aggregate in whole mixture. The flowability is improved with increasing the fraction of aggregate as well. SEM images and XRD patterns reveal that both geopolymerization and C-S-H reaction. With those results, CLSM based on CFBC fly ash could be used as an alternative material to apply various geotechnical problems.

Original language	English
Pages	2579-2582
Number of pages	4
Publication status	Published - 2017
Event	19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017 - Seoul, Korea, Republic of Duration: 2017 Sept 17 → 2017 Sept 22

Other

Other	19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017
Country/Territory	Korea, Republic of
City	Seoul
Period	17/9/17 → 17/9/22

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2015R1A2A2A01006337) and Korea Institute of Energy Technology Evaluation and Planning(KETEP) and the Ministry of Trade, Industry & Energy(MOTIE) of the Republic of Korea (No. 20161520101130).

Keywords

Bottom ash
CFBC fly ash
Controlled low strength material (CLSM)
Self-cementitious fly ash

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology

Cite this

@conference{6b828a2f516048c88d7499732c2d3cc9,

title = "Development of controlled low strength material (CLSM) using self-cementitious flyash",

abstract = "This experimental investigation aims at developing controlled low strength materials (CLSM) using a self-cementitious fly ash and bottom ash (aggregate). The fly ash and bottom ash specimen used in this study were obtained from a circulating fluidized bed combustion boiler (CFBC). To find the optimum mixing condition satisfying flow consistency and unconfined compression strength (UCS), the CLSM specimens were prepared under various mixing conditions, including varying aggregate types and fractions. Additionally, the prepared specimens were evaluated through scanning electron microscope and X-ray diffraction (XRD). The results of this study demonstrate that the UCS ranges from 325 kPa to 1855 kPa, and the water content satisfying flow consistency ranges from 42 to 85%. The USC increases with increasing the fraction of aggregate in whole mixture. The flowability is improved with increasing the fraction of aggregate as well. SEM images and XRD patterns reveal that both geopolymerization and C-S-H reaction. With those results, CLSM based on CFBC fly ash could be used as an alternative material to apply various geotechnical problems.",

keywords = "Bottom ash, CFBC fly ash, Controlled low strength material (CLSM), Self-cementitious fly ash",

author = "Sanghyeong Lim and Hyunwook Choo and Woojin Lee and Changho Lee",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2015R1A2A2A01006337) and Korea Institute of Energy Technology Evaluation and Planning(KETEP) and the Ministry of Trade, Industry & Energy(MOTIE) of the Republic of Korea (No. 20161520101130).; 19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017 ; Conference date: 17-09-2017 Through 22-09-2017",

year = "2017",

language = "English",

pages = "2579--2582",

}

TY - CONF

T1 - Development of controlled low strength material (CLSM) using self-cementitious flyash

AU - Lim, Sanghyeong

AU - Choo, Hyunwook

AU - Lee, Woojin

AU - Lee, Changho

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2015R1A2A2A01006337) and Korea Institute of Energy Technology Evaluation and Planning(KETEP) and the Ministry of Trade, Industry & Energy(MOTIE) of the Republic of Korea (No. 20161520101130).

PY - 2017

Y1 - 2017

N2 - This experimental investigation aims at developing controlled low strength materials (CLSM) using a self-cementitious fly ash and bottom ash (aggregate). The fly ash and bottom ash specimen used in this study were obtained from a circulating fluidized bed combustion boiler (CFBC). To find the optimum mixing condition satisfying flow consistency and unconfined compression strength (UCS), the CLSM specimens were prepared under various mixing conditions, including varying aggregate types and fractions. Additionally, the prepared specimens were evaluated through scanning electron microscope and X-ray diffraction (XRD). The results of this study demonstrate that the UCS ranges from 325 kPa to 1855 kPa, and the water content satisfying flow consistency ranges from 42 to 85%. The USC increases with increasing the fraction of aggregate in whole mixture. The flowability is improved with increasing the fraction of aggregate as well. SEM images and XRD patterns reveal that both geopolymerization and C-S-H reaction. With those results, CLSM based on CFBC fly ash could be used as an alternative material to apply various geotechnical problems.

AB - This experimental investigation aims at developing controlled low strength materials (CLSM) using a self-cementitious fly ash and bottom ash (aggregate). The fly ash and bottom ash specimen used in this study were obtained from a circulating fluidized bed combustion boiler (CFBC). To find the optimum mixing condition satisfying flow consistency and unconfined compression strength (UCS), the CLSM specimens were prepared under various mixing conditions, including varying aggregate types and fractions. Additionally, the prepared specimens were evaluated through scanning electron microscope and X-ray diffraction (XRD). The results of this study demonstrate that the UCS ranges from 325 kPa to 1855 kPa, and the water content satisfying flow consistency ranges from 42 to 85%. The USC increases with increasing the fraction of aggregate in whole mixture. The flowability is improved with increasing the fraction of aggregate as well. SEM images and XRD patterns reveal that both geopolymerization and C-S-H reaction. With those results, CLSM based on CFBC fly ash could be used as an alternative material to apply various geotechnical problems.

KW - Bottom ash

KW - CFBC fly ash

KW - Controlled low strength material (CLSM)

KW - Self-cementitious fly ash

UR - http://www.scopus.com/inward/record.url?scp=85045184809&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045184809&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85045184809

SP - 2579

EP - 2582

T2 - 19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017

Y2 - 17 September 2017 through 22 September 2017

ER -

Development of controlled low strength material (CLSM) using self-cementitious flyash

Abstract

Other

Bibliographical note

Keywords

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this