Mechanical Performance of Low Shrinkage Engineered Cementitious Composite in Tension and Compression

Zhang, Jun; Gong, Chengxu; Zhang, Guo; Ju, Xianchun

doi:10.1177/0021998309345303

Cited by 20 publications

(8 citation statements)

References 4 publications

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“…The ratio of σ ct /ε ct is the elastic modulus E t . σ t and ε t are the maximum stress and strain, respectively, during the strain-hardening stage where multiple cracking occurs (Zhang, Gong, Guo, & Ju, 2009). …”

Section: Materials Usedmentioning

confidence: 99%

Evaluating performance of concrete pavement joint repair using different materials to reduce reflective cracking in asphalt concrete overlay

Wei

Gao

Zhang

2014

Road Materials and Pavement Design

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Joint damages are commonly seen in old jointed concrete pavement (JCP). A joint restore should be conducted before rehabilitation by placing an asphalt concrete (AC) overlay in order to prevent the reflective cracking in the AC layer. This study was performed to experimentally investigate the rehabilitation strategy of a joint damaged JCP in terms of the performance of the repair materials and the effectiveness of the structure design through beam tests. Three types of repair materials were used and the beams were tested under the three-point bending. The repair materials used were plain concrete, engineering cementitious composite (ECC) and ECC-dowel combination. The flexural behaviour, fracture energy, crack pattern, and failure mode were investigated to evaluate the effectiveness of rehabilitation for future engineering application.

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Section: Materials Usedmentioning

confidence: 99%

Evaluating performance of concrete pavement joint repair using different materials to reduce reflective cracking in asphalt concrete overlay

Wei

Gao

Zhang

2014

Road Materials and Pavement Design

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“…15 High levels of cementitious materials in the ECCs can lead to the proper distribution of fibers in the composites; further, it is necessary for the behaviour of the hardening strain and the increase in the toughness of the matrix in the post-crack region. 16 In the ECCs, the use of coarse aggregates is avoided, resulting in a mixture with high cementitious materials, as compared to the conventional concrete. In fact, the materials applied in ECC are a mix of the cement paste or mortar with fine aggregates whose cement content is 830 to 1200 kg/m, 3,17,18 while it could be around 400 kg/m 3 in the normal concrete.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the effects of nanomaterials on durability of engineered cementitious composites exposed to the aggressive environment

Mansoori

Behfarnia

2019

Journal of Composite Materials

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The present study was aimed to evaluate the effect of micro silica, nano silica and carbon nanotube in the engineered cementitious composites made with polyvinyl alcohol fibers. Accordingly, the compressive strength and the modulus of the samples rupture were studied to evaluate the impact of micro silica, nano silica and carbon nanotube in engineered cementitious composite. In addition, different curing conditions were considered to investigate the durability of the mixes. In this regard, the mechanical properties of the samples cured in sulphuric acid and freeze and thaw cycling were compared to those cured in water. The results indicated that the mechanical properties were reduced upon exposure to acid and freeze and thaw cycling. It was also found that the application of micro silica and nano silica made the mixtures compacted and reduced the permeability. The module of rupture was increased significantly by the addition of carbon nanotube. Moreover, the evaluation of the samples cured in the aggressive environment showed that the role of carbon nanotube was significant in increasing the durability of the mixes. Further, the scanning electron microscopy images showed that the crack width was reduced by the addition of carbon nanotube. It was also revealed from the scanning electron microscopy images that the polyvinyl alcohol fibers were completely interacted and connected to the paste.

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“…Recently, an ECC with characteristics of low drying shrinkage (LSECC) is developed and has been used for jointless concrete pavement. [16][17][18] Cement used in LSECC has expansive property during hardening and therefore the shrinkage of the composite can then be compensated effectively. In the present paper, flexural performance of PVA-steel hybrid fiber reinforced LSECC was experimentally and theoretically investigated, especially on the effect of water to binder ratio of matrix was focused.…”

Section: Introductionmentioning

confidence: 99%

Simulation and test of flexural performance of polyvinyl alcohol-steel hybrid fiber reinforced cementitious composite

Zhang

Wang

et al. 2016

Journal of Composite Materials

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The flexural performance of polyvinyl alcohol-steel hybrid fiber reinforced engineered cementitious composite with characteristics of low drying shrinkage special focus on impacts of steel fiber content and matrix strength has been investigated in both experimental and theoretical aspects in this paper. Four matrix types with water to binder ratio of 0.25, 0.35, 0.45, and 0.55 and three additional steel fiber contents in the composite with polyvinyl alcohol fiber content of 1.7% in volume were used in the test program. The experimental results show that cracking and flexural strength of the composites are increased with the addition of steel fiber. This enhancement becomes more and more pronounced with decreasing of water to binder ratio of the composites. Meanwhile, fracture mechanics-based flexural model is used to simulate the flexure performance of the polyvinyl alcohol -steel hybrid fiber reinforced engineered cementitious composite with characteristics of low drying shrinkage. The model results show that a double peak load is expected of the composites under bending load. The first peak is controlled by the fracture toughness of matrix or cracking strength of matrix, and the second peak is governed by the fiber bridging. The effect of addition of steel fiber in engineered cementitious composite with characteristics of low drying shrinkage on the first peak is unapparent. The impact of steel fiber on the second peak is significant. This enhancement of additional steel fiber gradually decreases with the decrease of water to binder ratio of the matrix, which coincides well with the experimental findings. The test results are compared to the model and reasonable agreement is found.

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Mechanical Performance of Low Shrinkage Engineered Cementitious Composite in Tension and Compression

Cited by 20 publications

References 4 publications

Evaluating performance of concrete pavement joint repair using different materials to reduce reflective cracking in asphalt concrete overlay

Evaluating performance of concrete pavement joint repair using different materials to reduce reflective cracking in asphalt concrete overlay

Evaluation of the effects of nanomaterials on durability of engineered cementitious composites exposed to the aggressive environment

Simulation and test of flexural performance of polyvinyl alcohol-steel hybrid fiber reinforced cementitious composite

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