Bond-Splitting Strength of Reinforced Strain-Hardening Cement Composite Elements with Small Bar Spacing

2015 ◽  
Vol 112 (2) ◽  
Author(s):  
Toshiyuki Kanakubo ◽  
Hiroshi Hosoya
Keyword(s):  
Strain Hardening ◽  
Cement Composite ◽  
Splitting Strength ◽  
Bond Splitting

scholarly journals STUDY ON THE BOND SPLITTING STRENGTH OF SHEATHS FOR A PRECAST CONCRETE SYSTEM

1995 ◽  
Vol 60 (473) ◽  
pp. 137-148
Author(s):  
Rodolfo YANEZ ◽  
Juan Jose CASTRO ◽  
Teruaki YAMAGUCHI ◽  
Hiroshi IMAI
Keyword(s):  
Precast Concrete ◽  
Concrete System ◽  
Splitting Strength ◽  
Bond Splitting

scholarly journals The Effect of Shrinkage-Compensation on the Performance of Strain-Hardening Cement Composite (SHCC)

2019 ◽  
Vol 11 (5) ◽  
pp. 1453 ◽  
Author(s):  
Seok-Joon Jang ◽  
Ji-Hyeon Kim ◽  
Sun-Woo Kim ◽  
Wan-Shin Park ◽  
Hyun-Do Yun
Keyword(s):  
Compressive Strength ◽  
Strain Hardening ◽  
Extreme Environments ◽  
Cement Composite ◽  
Civil Infrastructure ◽  
Conventional Concrete ◽  
Calcium Sulfoaluminate ◽  
Rich Mixture ◽  
Shrinkage Compensation ◽  
Direct Tensile

This study investigated the effects of shrinkage compensation on the tensile and cracking responses of strain-hardening cement composite (SHCC) by adding calcium sulfoaluminate (CSA)-based expansive additive (EXA) to the mixture. Such responses are closely related to the durability of concrete structures, of dumbbell-shaped SHCC specimens, and reinforced SHCC ties. For this study, two SHCC mixtures and a conventional concrete mixture with a specific compressive strength value of 30 MPa were prepared and measured in terms of shrinkage history, compressive strength, flexural strength, and direct tensile strength. The test results show that the mechanical properties of shrinkage-compensated SHCC with 10% CSA-based EXA are superior to those of conventional SHCC and concrete mixtures. Also, reinforced tension ties with shrinkage-compensated SHCC exhibited the best multiple cracking and tension-stiffening behavior among the three types of tension ties tested. The results show that shrinkage compensation using CSA-based EXA in SHCC with rich mixture is effective for resisting crack damage. Shrinkage-compensated SHCC may be used for civil infrastructure facilities that require high levels of durability and are exposed to extreme environments.

Mechanical Properties of Sprayable Fiber Reinforced Strain-Hardening Cement Composite (SHCC)

2013 ◽  
Vol 372 ◽  
pp. 211-214
Author(s):  
Zhong Jie Yu ◽  
Mi Hwa Lee ◽  
Hyun Do Yun
Keyword(s):  
Mechanical Properties ◽  
Strain Hardening ◽  
Volume Fraction ◽  
Crack Opening ◽  
Cement Composite ◽  
Seismic Retrofitting ◽  
Mineral Admixtures ◽  
Uniaxial Tensile ◽  
High Expectations ◽  
The Subject

The use of strain-hardening cement composite (SHCC), which exhibits metal-like deformation behavior and has ability to restrict crack opening, as a retrofit material for seismic retrofitting of existing infrastructures, has been the subject of high expectations. In this work, Three SHCC mixtures including different chemical or mineral admixtures were prepared and evaluated based on the mechanical properties, such as flow, sprayability, compressive and uniaxial tensile performances. All SHCC mixtures were reinforced with polyvinyl alcohol (PVA) fibers at volume fraction of 2.2%. Mechanical properties of each SHCC mixture were measured and evaluated after mixing, pumping, and shotcreting. Experimental results indicated that the compressive strength and elastic modulus of three SHCC mixtures increased almost linearly according to shotcreting procedure from mixer to nozzle. And the uniaxial tensile of SHCC mixture (SHCC-AE) with AE agent was superior to the other SHCC mixtures (SHCC-MC and-N).

Tensile and Cracking Behaviors of Strain-Hardening Cement Composite (SHCC) with Fluosilicate Based Shrinkage-Reducing Agent (SRA)

2014 ◽  
Vol 525 ◽  
pp. 473-477 ◽  
Author(s):  
Seung Ju Han ◽  
Seok Joon Jang ◽  
Zhong Jie Yu ◽  
Hyun Do Yun
Keyword(s):  
Strain Hardening ◽  
Volume Fraction ◽  
Cement Composite ◽  
Tensile Tests ◽  
Reducing Agent ◽  
Direct Tension ◽  
Direct Tension Test ◽  
Rich Mixture ◽  
Direct Tensile ◽  
Shrinkage Reducing Agent

This paper provides the results of direct tensile tests for strain-hardening cement composite (SHCC) to investigate the influence of fluosilicate based shrinkage-reducing agent (SRA) on the tensile and cracking behaviors of SHCC material under direct tension. The specified compressive strength of the SHCC material is 50MPa. The adding ratio of fluosilicate based SRA for SHCC material is 2.5 and 5.0%. Two mixitures of SHCC with 2.2% polyvinyl alcohol (PVA) fibers at the volume fraction were mixed; two mixtures with SRA and one mixture of conventional SHCC material. To evaluate the tensile and cracking behaviors of SHCC materials, two dumbbell-shaped tensile specimens for each mixture were manufactured and tested in direct tension. Test results show that the addition of fluosilicate based SRA improved direct tensile and cracking behaviors of SHCC materials with rich mixture. This phenomenon is noticeable for SHCC with higher volume of SRA.

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