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Author:

Guan, Qingfeng (Guan, Qingfeng.) | Zhou, Yongxiang (Zhou, Yongxiang.) | Leng, Faguang (Leng, Faguang.)

Indexed by:

EI Scopus SCIE

Abstract:

The escalating accumulation of waste rock sawdust in the stone processing industry poses significant environmental challenges. This study investigates the recycling of this waste into spherical porous aggregates (SPA) using autoclaving for integration into ordinary concrete. Properties like moisture transportability and chloride ion permeability resistance were evaluated. Findings indicate an enhanced flowability in SPA -incorporated concrete, with a 28 -day strength of 56 MPa and a density exceeding 2300 kg/m3 . However, elevated SPA content correlated with increased drying shrinkage, water penetration, and electrical flux. Microscopic analysis revealed a compromised pore structure due to higher coarse pore content in SPA. Effective improvement in concrete durability is achievable by limiting SPA content to 20 vol%, reducing the water -binder ratio, or employing stronger SPA. The study validates the potential for scalable waste rock sawdust disposal through its use in ordinary concrete.

Keyword:

Pore structure Microstructure Workability Functional aggregate Durability Compressive strength Advanced concrete

Author Community:

  • [ 1 ] [Guan, Qingfeng]Southeast Univ, Sch Mat Sci & Engn, Nanjing 211102, Peoples R China
  • [ 2 ] [Zhou, Yongxiang]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Guan, Qingfeng]China Acad Bldg Res, Inst Bldg Mat, Beijing 100013, Peoples R China
  • [ 4 ] [Leng, Faguang]China Acad Bldg Res, Inst Bldg Mat, Beijing 100013, Peoples R China
  • [ 5 ] [Leng, Faguang]State Key Lab Bldg Safety & Built Environm, Beijing 100013, Peoples R China

Reprint Author's Address:

  • [Zhou, Yongxiang]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100124, Peoples R China

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Source :

CASE STUDIES IN CONSTRUCTION MATERIALS

ISSN: 2214-5095

Year: 2024

Volume: 20

6 . 2 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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