Monitoring Electrical Resistivity of Strain Hardening Fiber-Reinforced Cementitious Composite Exposed to Cyclic Wetting and Drying

2021 ◽  
pp. 271-279
Author(s):  
Phu-Cuong Nguyen ◽  
Ngoc-Thanh Tran
Keyword(s):  
Electrical Resistivity ◽  
Strain Hardening ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Wetting And Drying

Experimental Test of Reinforcing a Masonry Column with Fiber Reinforced Strain Hardening Cementitious Composite

2015 ◽  
Vol 752-753 ◽  
pp. 568-571
Author(s):  
Marek Jašek ◽  
Jan Hurta ◽  
Jiri Brozovsky
Keyword(s):  
Strain Hardening ◽  
Experimental Test ◽  
Industrial Waste ◽  
Structural Elements ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Innovative Materials ◽  
Construction Practice

In construction practice, we often encounter a situation where there is overloading of the existing columns and pillars, namely due to various adaptations and extensions. Masonry columns and pillars are usually loaded with vertical forces. Overloading these structural elements leads to the crushing of masonry. To prevent the destruction of columns and pillars it is often proposed to reinforce these elements.The paper deals with the possibilities of using new innovative materials in the reinforcement of masonry columns, namely a "green" fiber cementitious composite with the so-called "strain hardening", which uses industrial waste mainly from the Moravian-Silesian Region.

scholarly journals Feasibility of Reduced Lap-Spliced Length in Polyethylene Fiber-Reinforced Strain-Hardening Cementitious Composite

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Wonchang Choi ◽  
Seok-Joon Jang ◽  
Hyun-Do Yun
Keyword(s):  
Strain Hardening ◽  
Cement Composite ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Interfacial Behavior ◽  
Reinforcing Bars ◽  
Cracking Behavior ◽  
Lap Splice ◽  
Cyclic Tension ◽  
Polyethylene Fiber

This research investigates the interfacial behavior between polyethylene (PE) fiber-reinforced strain-hardening cement composite (PE-SHCC) and reinforcing bars that are spliced in the tension region to determine feasibility of reduced lap-spliced length in PE-SHCC. Twenty test specimens were subjected to monotonic and cyclic tension loads. The variables include the replacement levels of an expansive admixture (0% and 10%), the compressive strength of the SHCC mixtures (40 MPa and 80 MPa), and the lap-spliced length in the tension region (40% and 60% of the splice length recommended by ACI 318). The PE-SHCC mixture contains polyethylene fiber to enhance the tensile strength, control the widths of the cracks, and increase the bond strength of the lap splice reinforcement and the calcium sulfo-aluminate- (CSA-) based expansive admixture to improve the tension-related performance in the lap splice zone. The results have led to the conclusion that SHCC mixtures can be used effectively to reduce the development length of lap splice reinforcement up to 60% of the splice length that is recommended by ACI 318. The addition of the calcium sulfo-aluminate-based expansive admixture in the SHCC mixtures improved the initial performance and mitigated the cracking behavior in the lap splice region.

Numerical Investigation of Reinforcing a Masonry Column with Fiber Reinforced Strain Hardening Cementitious Composite

2015 ◽  
Vol 1122 ◽  
pp. 269-272
Author(s):  
Marek Jašek ◽  
Jiri Brozovsky
Keyword(s):  
Strain Hardening ◽  
High Performance ◽  
High Performance Concrete ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Short Fibers ◽  
Fine Grained ◽  
Numerical Assessment ◽  
The Matrix ◽  
New Generation

Fiber reinforced strain hardening cementitious composite is very deformable fine-grained concrete with the matrix based on Portland cement reinforced with short fibers. This composite material represents a new generation of high performance concrete (HPC) and it is also known as flexible concrete. Its characteristic property is that after reaching the strength when the first crack appears "hardening" of the material occurs, i.e. increases the stress and at the same time increases the strain until the ultimate strength of the material is achieved. One of the possibilities is the use of composites in the reconstruction and rehabilitation of buildings. The paper deals with the numerical assessment of the possibility of using fiber reinforced strain hardening cementitious composite during the reinforcement of an axially loaded brick column.

MECHANICAL PROPERTIES OF A PVA FIBER REINFORCED ENGINEERED CEMENTITIOUS COMPOSITE

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Ting Huang ◽  
Y.X. Zhang
Keyword(s):  
Grain Size ◽  
Strain Hardening ◽  
Tensile Strain ◽  
Construction Materials ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Engineered Cementitious Composite ◽  
Hardening Behavior ◽  
Dog Bone ◽  
Strain Hardening Behavior

High Performance Fiber Reinforced Cementitious Composites (HPFRCCs) are promising construction materials characterized by tensile strain hardening behavior. Engineered Cementitious Composite (ECC) is a special type of HPFRCC developed with enhanced ductility and durability. Coarse aggregates are usually excluded from the ECC matrix, and the reported ECCs are typically produced with microsilica sand having a maximum grain size of 200 µm. In this paper, a PVA-ECC mixture containing local dune sand with a maximum grain size of 300 µm was developed, and its compressive and tensile properties were experimentally investigated. A dog-bone-shaped specimen and a rectangular-coupon-shaped specimen were both used in the tensile test, and it was found after extensive research that the dog-bone specimen was more suitable than the rectangular coupon specimen. The experimental results from the dog-bone specimens indicated that the newly-developed composite possessed good tensile strain-hardening behavior, with a high ultimate tensile strength, and the compressive strength was comparable to that of existing PVA-ECCs.

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