Experimental investigation of modified desulfurized gypsum-based concrete permeability performance

• Autorzy: Luo Yong , Ren Shuai , Xiao Diancai , Gao Cong , Xu Linfeng , Wu Hao

Identyfikatory

DOI

10.24425/ace.2024.151898

• Języki publikacji: EN

Abstrakty

EN

To comprehend the permeability behavior of modified desulfurized gypsum-based concrete under varying stress conditions, this investigation conducted permeability assessments under both confining pressure and unloading circumstances. The findings suggest that an escalation in confining pressure results in a reduction in the specimen permeability. Conversely, a decrease in confining pressure leads to a gradual increment in permeability, albeit without fully reverting to its initial state. The rise in pore water pressure diminishes the effective confining pressure experienced by the specimen, thereby enhancing the interconnectivity of the internal pore structure and facilitating an increase in permeability. As the confining pressure intensifies, the volumetric strain also increases. Conversely, a reduction in confining pressure corresponds to a decrease in volumetric strain, though it does not return to its initial level. This observation implies that solely the elastic deformation of the specimen can recover as the confining pressure decreases. The internal pore structure distribution of modified desulfurized gypsum-based concrete is predominantly characterized by micropores, with a permeability coefficient in the order of magnitude of 10-17 m2, contributing to its commendable impermeability.

Słowa kluczowe

EN

desulfurization gypsum; underground engineering; concrete; permeability; confining pressure

PL

gips z odsiarczania; inżynieria geotechniczna; beton; przepuszczalność; ciśnienie ograniczające

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2024
• Tom: Vol. 70, nr 4
• Strony: 377--389
• Opis fizyczny: Bibliogr. 16 poz., il., tab.

Twórcy

autor

Luo Yong

• State Key Laboratory of Deep Coal Mining & Environment Protection, Huainan Mining (Group) Co., Ltd., Huainan, China

• https://orcid.org/0009-0008-1259-0163

autor

Ren Shuai

• Ping’an Coal Mining Engineering Technology Research Institute Co., Ltd., Huainan, China

• https://orcid.org/0009-0002-1422-1691

autor

Xiao Diancai

• Ping’an Coal Mining Engineering Technology Research Institute Co., Ltd., Huainan, China

• https://orcid.org/0009-0007-0976-329X

autor

Gao Cong

• School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, China

• https://orcid.org/0000-0001-8718-5746

autor

Xu Linfeng

• School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, China

• https://orcid.org/0000-0002-0841-8837

autor

Wu Hao

• School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, China

• https://orcid.org/0009-0001-2139-7006

Bibliografia

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