Article
Materials Science, Composites
Bayan Jabar Fayzulla, Mehmet Eroglu, Ahmet Erklig
Summary: This study evaluated the mechanical properties of steel/glass fiber and steel/basalt fiber-reinforced epoxy composites, showing a significant improvement in tensile and flexural strength by using glass and basalt fibers.
POLYMER COMPOSITES
(2022)
Article
Multidisciplinary Sciences
Yushun Yang, Sijiang Wei, Jihua Zhang, Jingke Wu, Chunlei Zhang
Summary: Brazilian split experiments were conducted on coarse sandstone from Xinjiang. Different temperatures were used for heat treatment and the physical and mechanical characteristics of the samples were studied. The results showed that heat treatment caused changes in color, longitudinal wave velocity, and tensile strength of the samples, which followed a quadratic function relationship with treatment temperature.
SCIENTIFIC REPORTS
(2022)
Article
Construction & Building Technology
Amir A. A. Zamani, Masoud Ahmadi, Ahmad Dalvand, Farhad Aslani
Summary: This research conducted a combined experimental and analytical program to study the effect of single and hybrid fibers on the material characteristics of sustainable high-strength self-compacting concrete. It was found that incorporating fibers into the concrete improved its properties, and the best efficiency was shown with the use of 1.5% hooked-end fibers.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Fangyuan Dong, Hanpeng Wang, Jiangtao Yu, Keke Liu, Zhenwen Guo, Xinzhi Duan, Xing Qiong
Summary: The experimental study showed that freeze-thaw cycles have minimal effect on the strength but significant influence on the deformability of hybrid PE and steel fiber reinforced concretes (FRC). The high compactness of matrix helps maintain the strength stability of FRC, but freeze-thaw cycles impair the fiber/matrix interfacial bond, leading to decreased deformability.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Wei He, Lang Liu, Zhiyu Fang, Yuheng Gao, Weiji Sun
Summary: This study investigated the effect of polypropylene (PP) fibers on the properties of modified magnesium-coal-based solid waste backfill materials (MFPB). It was found that increasing the content and length of PP fibers reduced the flowability of MFPB but significantly increased its strength. The permeability of MFPB initially decreased and then increased with the presence of PP fibers. The network structure formed by the PP fibers enhanced the strength and toughness of MFPB. This study provides valuable insights for the application of PP fibers in backfill mining.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Fangyu Liu, Ke Xu, Wenqi Ding, Yafei Qiao, Linbing Wang
Summary: The study shows that increasing steel fibers can enhance the mechanical properties of HFRC, especially the strength indices, while adding more PVA fibers can improve the toughness of HFRC, but may reduce strength indices.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Chemistry, Physical
Tianran Li, Yulong Yan, Chengying Xu, Xiangnan Han, Yang Liu, Haiquan Qi, Yang Ming
Summary: This study investigated the effect of hollow 304 stainless-steel fiber on the corrosion resistance and mechanical properties of ultra-high-performance concrete (UHPC). The results showed that hollow stainless-steel fiber could improve the distribution and durability of UHPC. Compared with solid steel fibers, UHPC with hollow stainless-steel fibers exhibited a significant increase in maximum flexural strength.
Article
Construction & Building Technology
Quanmin Peng, Bingwei Chen, Qun Lu, Kaiyang Li, Weihao Jin
Summary: Steel-waste PET hybrid fiber reinforced recycled aggregate concretes (HFRACs) were produced to investigate their combined effect on the properties of recycled aggregate concrete (RAC). The results showed that the contents of two types of fibers had a significant negative impact on workability and positive effect on mechanical strength. The slump and compressive strength of HFRAC can be predicted by linear equations, while the splitting tensile strength and flexural strength can be predicted by quadratic polynomial equations. Properly combining waste PET fiber with steel fiber can improve the mechanical properties of RAC, making steel-waste PET HFRAC a potential green sustainable concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Cuiyu Li, Mengxiao Shi, Wenjin Xing, Jiajia Song, Jingting Shan, Lei Zhang, Changhong Feng
Summary: This study investigated the effects of CA/PGPA modification on the mechanical properties of aramid 3D braided composites, and further improved the mechanical properties of the composites by modifying them with aramid nanofiber/graphene nanoparticle (ANF/G).
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Chunyu Zhang, Yikai Sun, Jianguo Xu, Bo Wang
Summary: This study investigates how vibration stirring, steel-fiber volume ratio, and matrix strength influence the mechanical properties of steel-fiber-reinforced concrete. It is found that vibration mixing produces concrete with better mechanical properties compared to ordinary mixing, with a linear relationship between mechanical properties and matrix strength as well as fiber volume ratio. Additionally, microscopic studies show that vibration stirring optimizes the microstructure and enhances homogeneity of steel-fiber-reinforced concrete.
Article
Construction & Building Technology
Changjiang Liu, Xiaochuan Hunag, Yu-You Wu, Xiaowei Deng, Zhoulian Zheng, Bo Yang
Summary: This study investigates the improvement of steel fiber reinforced concrete (SFRC) performance by adding varying amounts of graphene oxide (GO). The results show that GO has a significant enhancing effect on the mechanical and durability properties of SFRC, with an increase in compressive strength, flexural strength, and splitting tensile strength by 20.1%, 29.5%, and 26.2% respectively compared to the reference group. Additionally, the addition of GO reduces chloride ion penetration depth by up to 56.8%, and the mass loss and relative dynamic modulus loss after 100 freeze-thaw cycles are significantly lower compared to the reference group.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Ying Dong, Zhen Tao, Chao Sun, Hongyan Wu, Xiuhua Gao, Linxiu Du
Summary: The continuous cooling transformation of deformed austenite and its relationship to mechanical properties in medium-Mn steel was studied through thermomechanical controlled processing and continuous cooling processes. The addition of manganese significantly improved the stability of austenite, and martensite transformation only occurred during slow furnace cooling. The microstructure of the experimental steel was composed of lath martensite and a small amount of retained austenite. With decreasing rolling temperature, the morphology of prior austenite grains changed from equiaxed recrystallization type to flat-elongated type, resulting in refined martensitic laths due to the fragmentation of prior austenite grains and strain hardening introduced by hot rolling.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Textiles
B. Madhusudhan Reddy, G. Suresh Kumar, Y. Venkata Mohana Reddy, P. Venkateshwar Reddy, B. Chandra Mohan Reddy
Summary: In this study, Cordia Dichotoma natural fiber and granite powder are used to reinforce epoxy resin and create a hybrid composite. The results show that granite powder is a good filler material for improving the mechanical properties of the composite, and it also helps reduce water absorption and chemical resistance.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Construction & Building Technology
Yin-Lei Sun, Si-Teng Ma, Yan-Wen Kuang, Jian-Bin Xie
Summary: The mineral composition significantly affects the mechanical properties of granite residual soil in hot and humid climates. This study reconstructed soil samples using different minerals and conducted various mechanical experiments to investigate the influence of minerals on soil strength from macro-, meso-, and micro-perspectives. The results indicate that kaolinite has the highest impact on tensile strength, followed by illite, montmorillonite, and red clay. Furthermore, the improvement in soil mechanics is attributed to the reduction in porosity, the formation of stronger particle aggregates, and the connectivity of these aggregates through mineral-induced skeleton structures.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Wenda Xu, Lin Yang, Danying Gao, Jiyu Tang, Guowen Sun, Yunsheng Zhang
Summary: This study investigates the mechanical properties of seawater-SFRC exposed to a high humidity environment for 27 months, considering the carbonation effect. The results show that the mechanical properties of non-carbonized SFRC specimens improve and stabilize after 15 months of exposure. However, pre-carbonized SFRC specimens exhibit a decrease in axial compressive toughness and flexural properties after 15 months, with corrosion of steel fibers near the surface. This study provides valuable evidence for the potential application of seawater-SFRC.
JOURNAL OF BUILDING ENGINEERING
(2023)
