Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/buildings11080327 |
Performance of Steel Fiber-Reinforced Alkali-Activated Slag-Fly Ash Blended Concrete Incorporating Recycled Concrete Aggregates and Dune Sand | |
El-Hassan, Hilal; Hussein, Abdalla; Medljy, Jamal; El-Maaddawy, Tamer | |
通讯作者 | El-Hassan, H (corresponding author), UAE Univ, Dept Civil & Environm Engn, Al Ain 15551, U Arab Emirates. |
来源期刊 | BUILDINGS
![]() |
EISSN | 2075-5309 |
出版年 | 2021 |
卷号 | 11期号:8 |
英文摘要 | This study evaluates the performance of alkali-activated slag-fly ash blended concrete made with recycled concrete aggregates (RCA) and reinforced with steel fibers. Two blends of concrete with ground granulated blast furnace slag-to-fly ash ratios of 3:1 and 1:1 were used. Natural aggregates were substituted with RCA, while macro steel fibers with 35 mm of length and aspect ratio of 65 were incorporated in RCA-based mixtures at various volume fractions. Fine aggregates were in the form of desert dune sand. Mechanical and durability characteristics were investigated. Experimental results revealed that RCA replacement decreased the compressive strength of plain concrete mixtures with more pronounced reductions being perceived at higher replacement percentages. Mixtures made with 30%, 70%, and 100% RCA could be produced with limited loss in the design compressive strength upon incorporating 1%, 2%, and 2% steel fibers, by volume, respectively. In turn, splitting tensile strength was comparable to the NA-based control while adding at least 1% steel fiber, by volume. Moreover, higher water absorption and capillary sorptivity and lower ultrasonic pulse velocity, bulk resistivity, and abrasion resistance were reported during RCA replacement. Meanwhile, incorporation of steel fibers densified the concrete and enhanced its resistance to abrasive forces, water permeation, and water transport. Analytical regression models were developed to correlate hardened concrete properties to the 28-day cylinder compressive strength. |
英文关键词 | alkali-activated concrete slag fly ash steel fibers dune sand recycled concrete aggregate hardened properties analytical regression model |
类型 | Article |
语种 | 英语 |
开放获取类型 | gold |
收录类别 | SCI-E |
WOS记录号 | WOS:000688917600001 |
WOS关键词 | BLAST-FURNACE SLAG ; MECHANICAL-PROPERTIES ; GEOPOLYMER CONCRETE ; COARSE AGGREGATE ; DURABILITY PROPERTIES ; DEMOLITION WASTE ; MICROSTRUCTURE ; STRENGTH ; WORKABILITY ; BEHAVIOR |
WOS类目 | Construction & Building Technology ; Engineering, Civil |
WOS研究方向 | Construction & Building Technology ; Engineering |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/362750 |
作者单位 | [El-Hassan, Hilal; Hussein, Abdalla; Medljy, Jamal; El-Maaddawy, Tamer] UAE Univ, Dept Civil & Environm Engn, Al Ain 15551, U Arab Emirates |
推荐引用方式 GB/T 7714 | El-Hassan, Hilal,Hussein, Abdalla,Medljy, Jamal,et al. Performance of Steel Fiber-Reinforced Alkali-Activated Slag-Fly Ash Blended Concrete Incorporating Recycled Concrete Aggregates and Dune Sand[J],2021,11(8). |
APA | El-Hassan, Hilal,Hussein, Abdalla,Medljy, Jamal,&El-Maaddawy, Tamer.(2021).Performance of Steel Fiber-Reinforced Alkali-Activated Slag-Fly Ash Blended Concrete Incorporating Recycled Concrete Aggregates and Dune Sand.BUILDINGS,11(8). |
MLA | El-Hassan, Hilal,et al."Performance of Steel Fiber-Reinforced Alkali-Activated Slag-Fly Ash Blended Concrete Incorporating Recycled Concrete Aggregates and Dune Sand".BUILDINGS 11.8(2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。