Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete
As a renewable resource, rape straw has rich fibrous tissue on the surface and woody parts, which can provide high toughness and tensile strength. However, rape straw is usually treated by on-site incineration, causing severe damage to the ecological environment and resources. Rape straw fiber (RSF)...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/3002430 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850168568559173632 |
|---|---|
| author | Xiao-yu Lu Zhuang Zhao |
| author_facet | Xiao-yu Lu Zhuang Zhao |
| author_sort | Xiao-yu Lu |
| collection | DOAJ |
| description | As a renewable resource, rape straw has rich fibrous tissue on the surface and woody parts, which can provide high toughness and tensile strength. However, rape straw is usually treated by on-site incineration, causing severe damage to the ecological environment and resources. Rape straw fiber (RSF) is added into fly ash concrete (FAC) to reuse rape straw effectively, protect the environment, and develop green and renewable building materials. In this test, RSF is divided into 4 volume additions of 0.1%, 0.2%, 0.3%, and 0.4% and 3 length intervals of 20–30, 30–40, and 40–50 mm to study the mechanical properties and microstructure of FAC. Results showed that RSF with a volume content of 0.1%–0.2% and a length of 30–40 mm can effectively improve the mechanical properties of FAC. Still, the excessive incorporation of large RSF can reduce the compressive strength, splitting tensile strength, and ultrasonic velocity of FAC. The compressive strength, splitting tensile strength, and sound velocity of specimens with a volume content of 0.2% and size length of 30–40 mm increased by 8.73%, 11.37%, and 7.60%, respectively, compared with those of the control group. Scanning electron microscopy results showed that RSF mixed with the appropriate amount of FAC presented the absence of agglomeration, the presence of bifurcation cracking, and other phenomena, and the ability to combine closely with FAC to fill internal pores and improve the mechanical properties of the FAC effectively. |
| format | Article |
| id | doaj-art-a77643be6b6047a89e0a408fc620c3bd |
| institution | OA Journals |
| issn | 1687-8094 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-a77643be6b6047a89e0a408fc620c3bd2025-08-20T02:20:56ZengWileyAdvances in Civil Engineering1687-80942022-01-01202210.1155/2022/3002430Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash ConcreteXiao-yu Lu0Zhuang Zhao1School of Civil Engineering and ArchitectureSchool of Civil Engineering and ArchitectureAs a renewable resource, rape straw has rich fibrous tissue on the surface and woody parts, which can provide high toughness and tensile strength. However, rape straw is usually treated by on-site incineration, causing severe damage to the ecological environment and resources. Rape straw fiber (RSF) is added into fly ash concrete (FAC) to reuse rape straw effectively, protect the environment, and develop green and renewable building materials. In this test, RSF is divided into 4 volume additions of 0.1%, 0.2%, 0.3%, and 0.4% and 3 length intervals of 20–30, 30–40, and 40–50 mm to study the mechanical properties and microstructure of FAC. Results showed that RSF with a volume content of 0.1%–0.2% and a length of 30–40 mm can effectively improve the mechanical properties of FAC. Still, the excessive incorporation of large RSF can reduce the compressive strength, splitting tensile strength, and ultrasonic velocity of FAC. The compressive strength, splitting tensile strength, and sound velocity of specimens with a volume content of 0.2% and size length of 30–40 mm increased by 8.73%, 11.37%, and 7.60%, respectively, compared with those of the control group. Scanning electron microscopy results showed that RSF mixed with the appropriate amount of FAC presented the absence of agglomeration, the presence of bifurcation cracking, and other phenomena, and the ability to combine closely with FAC to fill internal pores and improve the mechanical properties of the FAC effectively.http://dx.doi.org/10.1155/2022/3002430 |
| spellingShingle | Xiao-yu Lu Zhuang Zhao Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete Advances in Civil Engineering |
| title | Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete |
| title_full | Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete |
| title_fullStr | Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete |
| title_full_unstemmed | Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete |
| title_short | Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete |
| title_sort | effect of rape straw fiber on mechanical properties and microstructure of fly ash concrete |
| url | http://dx.doi.org/10.1155/2022/3002430 |
| work_keys_str_mv | AT xiaoyulu effectofrapestrawfiberonmechanicalpropertiesandmicrostructureofflyashconcrete AT zhuangzhao effectofrapestrawfiberonmechanicalpropertiesandmicrostructureofflyashconcrete |