A study on the mixed properties of green controlled low strength cementitious

• Autorzy: Chen Sung-Ching , Lin Wei-Ting , Lin Kae-Long , Huang Po-Yu

Identyfikatory

DOI

10.2478/msp-2021-0004

• Języki publikacji: EN

Abstrakty

EN

In this study, two industrial wastes – circulating fluidized bed combustion co-fired fly ash (CFA) and ground granulated blast-furnace slag (GGBS) – were used as green materials instead of cementitious materials in controllable low strength material (CLSM). CLSM was used to backfill the pavement. CLSM should meet the compressive strength requirements of the CLSM specification (under 8.24 MPa), and it had the self-consolidating characteristics of fluidized concrete. In order to comply with the characteristics of self-consolidation, a mix design including superplasticizers, adhesives, and accelerators were used to ensure that the proportion could meet the requirements of both CLSM and the self-consolidating properties. The test methods included the slump flow test, ball drop test, strength activity index, compressive strength, mercury intrusion porosimetry, chloride migration test, and scanning electron microscope. A water/cement ratio of 0.85 was used as the mix design for the CLSM requirements. The CFA and GGBS used in CLSM could replace 78 wt.% of the cement, and CLSM could effectively meet the requirements of the workability, strength and microscopic properties.

Słowa kluczowe

EN

co-fired fly ash; ground granulated blast-furnace slag; controlled low strength material; self-consolidating concrete; green material

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2021
• Tom: Vol. 39, No. 1
• Strony: 59--74
• Opis fizyczny: Bibliogr. 42 poz., rys., tab.

Twórcy

autor

Chen Sung-Ching

• School of Civil and Architectural Engineering, East China University of Technology, 418 Guanglan AV. Nanchang, Jiangxi, 330013, China

autor

Lin Wei-Ting

• Department of Civil Engineering, National Ilan University, No. 1, Sec. 1, Shennong Rd., Yilan City, Yilan County, 26047, Taiwan

autor

Lin Kae-Long

• Department of Environmental Engineering, National Ilan University, No. 1, Sec. 1, Shennong Rd., Yilan City, Yilan County, 26047, Taiwan

autor

Huang Po-Yu

• Department of Civil Engineering, National Ilan University, No. 1, Sec. 1, Shennong Rd., Yilan City, Yilan County, 26047, Taiwan

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