Effect of Coal Bottom Ash and Coal Bottom Slag on Fresh, Mechanical, and Durability Properties of Concrete

被引：0

作者：

Guteta, Lidya E. ^{[1
]}

Menda, Samrawit ^{[2
]}

Poudel, Sandip ^{[3
]}

Useldinger-Hoefs, Joe ^{[4
]}

Gedafa, Daba S. ^{[5
]}

Dockter, Bruce ^{[5
]}

机构：

[1] Univ North Dakota, Dept Civil Engn, Grand Forks, ND 58202 USA

[2] Bingham Engn Consultants, Phoenix, AZ USA

[3] Red River Valley Alliance, Fargo, ND USA

[4] Michael Baker Int, Minneapolis, MN USA

[5] Univ North Dakota, Dept Civil Engn, Grand Forks, ND USA

来源：

INTERNATIONAL CONFERENCE ON TRANSPORTATION AND DEVELOPMENT 2024: PAVEMENTS AND INFRASTRUCTURE SYSTEMS, ICTD 2024 | 2024年

关键词：

Coal Bottom Ash (CBA); Coal Bottom Slag (CBS); fresh properties; mechanical properties; durability; FLY-ASH; COMBUSTION; AGGREGATE; FINENESS;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Raw materials depletion such as the sand used in concrete production has been a concern for the built environment. This research aimed to explore the effects of optimum coal bottom ash (CBA) and coal bottom slag (CBS) in concrete on fresh, mechanical, and durability properties. Experimental investigations were conducted to evaluate the characteristics of hardened concrete by substituting the optimum 50% fine aggregate determined from the previous study with CBA and CBS. Fresh, mechanical, and durability tests were carried out, and results were compared to control concrete. Outcomes of this research revealed that CBA-based concrete increased compressive strength at an early curing age by 74.2%; however, splitting tensile strength and flexural strength were significantly developed at later curing ages. A higher modulus of elasticity and lower chloride ion penetration severity were also established. These findings indicate that CBA and CBS can be used as a fine aggregate replacement.

引用

页码：197 / 208

页数：12

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