Performance Research of Strain Hardening Cementitious Composites (SHCC) under Uniaxial Tensile Load

2011 ◽  
Vol 99-100 ◽  
pp. 972-976
Author(s):  
Chun Hong Hu ◽  
Tie Jun Zhao ◽  
Tao Rong
Keyword(s):  
Strain Hardening ◽  
Tensile Load ◽  
Uniaxial Tensile ◽  
Cementitious Composites ◽  
River Sand ◽  
Tensile Performance ◽  
Practical Engineering ◽  
Cracking Characteristics ◽  
Performance Research ◽  
Versus Strain

Strain Hardening Cementitious Composites (SHCC) varied with mixture proportion was preparated with normal engineering materials in our area, tensile performance of dumbbell specimens under uniaxial tensile load was experimentally investigated in this paper, and tensile stress versus strain curves as well as crack development of SHCC with different mixture proportion were obtained. The results showed that all specimens had strain-hardening and multiple-cracking characteristics obviously, among them, ultimate tensile strain of No.A and C series could exceed 3%. SHCC with excellent stable tensile performance was preparated based on normal river sand but not quartz sand, which can reduce project cost and promote the application and development of SHCC in practical engineering.

Study on Durability of Engineered Cementitious Composites

2011 ◽  
Vol 236-238 ◽  
pp. 2688-2693 ◽  
Author(s):  
Hui Qing Xue ◽  
Zong Cai Deng
Keyword(s):  
Tensile Stress ◽  
Crack Resistance ◽  
Strain Hardening ◽  
Tensile Load ◽  
Strain Curve ◽  
Uniaxial Tensile ◽  
Cementitious Composites ◽  
Stress Strain ◽  
Engineered Cementitious Composites ◽  
Pva Fiber

Engineered cementitious composites (ECC) has good ductility, with its unique strain hardening and multiple cracking characteristics. Through the research of uniaxial direct tension performance and durability tests of ECC blending with polyvinyl alcohol (PVA) fiber, the tensile stress-strain curves, the freeze-thaw resistances and the impermeability of ECC were analyzed. The tensile stress - strain curve results show strain hardening of ECC achieved under the uniaxial tensile load; PVA fiber has good crack resistance toughening effect, can significantly improve crack resistance and deformation capacity of cementitious composites. The maximum tensile strain of the ECC is between 3800με to 8657με (20-50 times that of polypropylene fiber concrete) displays high toughness and large deformation characteristics. The freezing level of the ECC is higher than F300, which is ideal for the maintenance and reinforcement of concrete structures in cold regions. Domestic and imported PVA fiber can significantly improve the impermeability and crack resistance of the ECC.

The Apparent Density, Tensile Properties and Drying Shrinkage of Ultra High Toughness Cementitious Composites

2011 ◽  
Vol 261-263 ◽  
pp. 223-227 ◽  
Author(s):  
Xiang Rong Cai ◽  
Bai Quan Fu ◽  
Shi Lang Xu
Keyword(s):  
Strain Hardening ◽  
Apparent Density ◽  
High Performance ◽  
Drying Shrinkage ◽  
Uniaxial Tensile ◽  
Cementitious Composites ◽  
Fiber Reinforced ◽  
High Toughness ◽  
High Performance Fiber ◽  
Pseudo Strain Hardening

A new class of high performance fiber reinforced cementitious composites called Ultra High Toughness Cementitious Composites (UHTCC) is developed in the last few years. It is a pseudo strain hardening material with maximum tensile strain capacity more than 3%, yet the fiber volume fraction no more than 2%. The multiple cracking patterns accompanying pseudo strain hardening behavior are obtained which implies high ductility, energy absorption capacity, and toughness. A remarkable characteristic distinguish it from conventional high performance fiber reinforced concrete is the maximum crack width of multiple cracks which is about 60µm under ultimate tensile load. Such micro-cracks are often small enough to prevent the intrusion of aggressive agents. From a durability point of view this composite can be considered as an effectively uncracked material. The performances of this new material, including the apparent density, the uniaxial tensile property, and the drying shrinkage performance, are experimental studied in this paper.

Tensile performance of sustainable Strain-Hardening Cementitious Composites with hybrid PVA and recycled PET fibers

2018 ◽  
Vol 107 ◽  
pp. 110-123 ◽  
Author(s):  
Jing Yu ◽  
Jie Yao ◽  
Xiuyi Lin ◽  
Hedong Li ◽  
Jeffery Y.K. Lam ◽  
...  
Keyword(s):  
Strain Hardening ◽  
Cementitious Composites ◽  
Recycled Pet ◽  
Tensile Performance ◽  
Pet Fibers

Research on Tensile Property and Manufacture of SHCC

2012 ◽  
Vol 256-259 ◽  
pp. 796-800
Author(s):  
Chun Hong Hu ◽  
Yan E Gao ◽  
Wan Cong Ding
Keyword(s):  
Tensile Test ◽  
Strain Hardening ◽  
Tensile Strain ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Cementitious Composite ◽  
Flow Test ◽  
Through Flow ◽  
Different Ages ◽  
Cracking Characteristics

Based on the previous test, SHCC (Strain Hardening Cementitious Composite) with the best fluidity was got through flow test, the different stress-strain full curves of SHCC were obtained by uniaxial tensile test on three dumbbell-shape specimens of SHCC with each group according to different diameter sand and different ages; and crack development was observed during test. The experimental results show that: The finer the sand sizes, the better the strain-hardening performance and more microcrack of SHCC that can be obtained; obvious strain-hardening characteristics of the specimens at different ages are all occured and the ultimate tensile strain can reach or even more than 3%. The crack spacing of various specimens are different, that is to say, there is difference in cracking characteristics among specimens at different ages. The experimental and analytical conclusion can provide a lot of theoretical bases for the research on performances of SHCC.

Effect of Fiber Type and Fiber Hybrids on Strain-Hardening and Multiple Cracking Properties of the Ultra-High Performance Cementitious Composites under Uniaxial Loads

2016 ◽  
Vol 711 ◽  
pp. 187-194 ◽  
Author(s):  
Li Ping Guo ◽  
Dong Yi Lei
Keyword(s):  
Tensile Strength ◽  
Strain Hardening ◽  
High Performance ◽  
Steel Fiber ◽  
Volume Fraction ◽  
Uniaxial Tensile ◽  
Cementitious Composites ◽  
Multiple Cracking ◽  
Polyethylene Fiber ◽  
Pva Fiber

Five series of strain hardening ultra-high performance cementitious composites (SHUHPCC) incorporated with different types of fibers and hybrid fibers were produced. Three types of fibers (steel fiber, polyvinyl alcohol fiber and polyethylene fiber) were used as mono or hybrid reinforcement in SHUHPCC with the same volume fraction of 2%. The primary strengths, strain hardening and multiple cracking behaviors of hybrid fiber reinforced SHUHPCC under the uniaxial tensile are investigated. Test results show that the SHUHPCC containing PE fibers exhibited higher strain hardening capacity and lower first cracking strength than composites reinforced with mono PVA fiber or mono steel fiber. The composites containing PVA fibers or steel fibers have higher tensile strength and first cracking strength than the composite reinforced by mono PE fiber. Hybridization reinforcement with different fibers is able to make up defects of mono fiber reinforcement for SHUHPCC. The change laws of tensile strength and uniaxial compression strength of SHUHPCC with mono PE fiber and mono PVA fiber are opposite to each other.

DEVELOPMENT AND ASSESSMENT METHODS OF TENSILE PERFORMANCE OF HYBRID STRAIN HARDENING CEMENTITIOUS COMPOSITES

2009 ◽  
Vol 15 (31) ◽  
pp. 643-648
Author(s):  
Takatsune KIKUTA ◽  
Hirozo MIHASHI ◽  
Naoya ISHIKAWA ◽  
Hiroshi FUKUYAMA ◽  
JaeHong JEONG
Keyword(s):  
Strain Hardening ◽  
Assessment Methods ◽  
Cementitious Composites ◽  
Hybrid Strain ◽  
Tensile Performance

Engineered/strain-hardening cementitious composites (ECC/SHCC) with a compressive strength over 210 MPa

2021 ◽  
pp. 100775
Author(s):  
Bo-Tao Huang ◽  
Ke-Fan Weng ◽  
Ji-Xiang Zhu ◽  
Yu Xiang ◽  
Jian-Guo Dai ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Strain Hardening ◽  
Cementitious Composites ◽  
Engineered Strain
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