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Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag
https://orcid.org/0000-0001-8517-607X
Highlights GGBFS and DS were utilized for the preparation of cementless concrete. GGBFS/DS cementless concrete, the compressive strength can be reached 14MPa. A series of performances of cementless concrete with GGBFS/DS are satisfactory. Addition of SP, the performances of GGBFS/DS cementless concrete are improved. A delay of the initial setting time was observed with the addition of SP.
Abstract This study used the byproducts of steel manufacturing, ground granulated blast furnace slag (GGBFS) and desulfurization slag (DS), to produce cementless concrete. Superplasticizers (SP) were added to improve the higher water absorption of DS and enhance the compressive strength of cementless concrete. The feasibility of manufacture was evaluated by the engineering properties of slump, setting time, compressive strength, length change, sulfate attack resistance and scanning electron microscopy (SEM) analysis. The results showed that 14MPa could be obtained with the addition of 550 kg/m3 of GGBFS. The compressive strength and sulfate attack resistance of the cementless concrete were enhanced as the amount of added SP was increased, and the length change did not exceed 0.05% within 90days, indicating good volume stability. SEM showed that the main hydration products were ettringite, calcium hydroxide, and tobermorite gel during the early stage of hydration, which gave the cementless concrete its early strength.
Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag
https://orcid.org/0000-0001-8517-607X
Highlights GGBFS and DS were utilized for the preparation of cementless concrete. GGBFS/DS cementless concrete, the compressive strength can be reached 14MPa. A series of performances of cementless concrete with GGBFS/DS are satisfactory. Addition of SP, the performances of GGBFS/DS cementless concrete are improved. A delay of the initial setting time was observed with the addition of SP.
Abstract This study used the byproducts of steel manufacturing, ground granulated blast furnace slag (GGBFS) and desulfurization slag (DS), to produce cementless concrete. Superplasticizers (SP) were added to improve the higher water absorption of DS and enhance the compressive strength of cementless concrete. The feasibility of manufacture was evaluated by the engineering properties of slump, setting time, compressive strength, length change, sulfate attack resistance and scanning electron microscopy (SEM) analysis. The results showed that 14MPa could be obtained with the addition of 550 kg/m3 of GGBFS. The compressive strength and sulfate attack resistance of the cementless concrete were enhanced as the amount of added SP was increased, and the length change did not exceed 0.05% within 90days, indicating good volume stability. SEM showed that the main hydration products were ettringite, calcium hydroxide, and tobermorite gel during the early stage of hydration, which gave the cementless concrete its early strength.
Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag
https://orcid.org/0000-0001-8517-607X
Highlights GGBFS and DS were utilized for the preparation of cementless concrete. GGBFS/DS cementless concrete, the compressive strength can be reached 14MPa. A series of performances of cementless concrete with GGBFS/DS are satisfactory. Addition of SP, the performances of GGBFS/DS cementless concrete are improved. A delay of the initial setting time was observed with the addition of SP.
Abstract This study used the byproducts of steel manufacturing, ground granulated blast furnace slag (GGBFS) and desulfurization slag (DS), to produce cementless concrete. Superplasticizers (SP) were added to improve the higher water absorption of DS and enhance the compressive strength of cementless concrete. The feasibility of manufacture was evaluated by the engineering properties of slump, setting time, compressive strength, length change, sulfate attack resistance and scanning electron microscopy (SEM) analysis. The results showed that 14MPa could be obtained with the addition of 550 kg/m3 of GGBFS. The compressive strength and sulfate attack resistance of the cementless concrete were enhanced as the amount of added SP was increased, and the length change did not exceed 0.05% within 90days, indicating good volume stability. SEM showed that the main hydration products were ettringite, calcium hydroxide, and tobermorite gel during the early stage of hydration, which gave the cementless concrete its early strength.
Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag
Kuo, Wen-Ten (author) / Wang, Her-Yung (author) / Shu, Chun-Ya (author)
Construction and Building Materials ; 63 ; 189-196
2014-04-01
8 pages
Article (Journal)
Electronic Resource
English
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