Development of engineered cementitious composites (ECC) using artificial fine aggregates

Xu, Ling-Yu; Huang, Bo-Tao

doi:10.1016/j.conbuildmat.2021.124742

Cited by 62 publications

(11 citation statements)

References 53 publications

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“…Fiber‐reinforced concrete has been developed to solve the problems of brittleness and stiffness degradation of traditional concrete. Engineered cementitious composite (ECC) has the characteristics of strain hardening and multiple crack development, which is often used in tunnel structural support, structural repair, and airport runway modification 1–3 . Compared with the traditional fiber‐reinforced concrete, ECC can achieve the ultimate tensile strain of 2–8% and control the crack width below 0.1 mm by 2% fiber content according to the strength criterion and energy criterion 4 .…”

Section: Introductionmentioning

confidence: 99%

Study on mechanical properties of (1 % PVA fiber +1 % Steel fiber) PS‐ECC under the coupling effects of elevated temperature and dynamic loads

Chen

Zhu

Zhou

et al. 2023

Structural Concrete

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The coupling effect of temperature and impact loads can cause the concrete strength to decay and lead to the failure of the structure that cannot reach the designed load‐bearing strength. In this study, the evolution laws of dynamic compressive strength, dynamic increase factor (DIF), and absorbed energy of (1% polyvinyl alcohol [PVA] fiber +1% steel fiber) PS‐ECC (engineered cementitious composite) were obtained by a split Hopkinson compression bar test. The conclusions can be concluded: the dynamic compressive strength, DIF, and absorbed energy of PS‐ECC largely show a tendency to decrease with increasing temperature; however, the recovery effect occurs at 200°C due to the accumulation of steam inside the specimen to counteract the impact force. Then, 200°C becomes a threshold value, and the sensitivity of PS‐ECC to strain rate shows a steep drop when the temperature exceeds 200°C. Compared to 200°C, the growth rate of dynamic compressive strength, DIF, and energy absorption capacity from strain rate 50–80 s−1 decreases by 50.65, 55.24, and 45.71% at 300°C, the growth rate decreases by 55.87, 56.5, and 48.45% at 400°C. The impact energy absorption of PS‐ECC was provided mainly by PVA fiber. The energy absorption of PS‐ECC is almost the same at 300 and 400°C for the same strain rate due to PVA fiber burning disappears.

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Section: Introductionmentioning

confidence: 99%

Study on mechanical properties of (1 % PVA fiber +1 % Steel fiber) PS‐ECC under the coupling effects of elevated temperature and dynamic loads

Chen

Zhu

Zhou

et al. 2023

Structural Concrete

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“…UHPFRC is commonly defined as an advanced cement‐based composite material that possesses distinguished mechanical properties, including high strength, excellent energy absorption capacity, and outstanding durability. Compared with ordinary Portland cement concrete, UHPFRC has a lower water–cement ratio ( w / c ), which significantly improved its strength 4,5 . Besides, the optimum composition of raw materials is determined using the particle dense packing theory to augment the mechanical performances and enhance the durability of UHPFRC 6,7 .…”

Section: Introductionmentioning

confidence: 99%

A novel damage evaluation method for ultra‐high‐performance fiber reinforced concrete under multiple impact loads

Shi,

Chen,

Ning

et al. 2023

Fatigue Fract Eng Mat Struct

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In this study, repeated compression tests were conducted for ultra‐high‐performance fiber reinforced concrete (UHPFRC) under three different impact pressures. Results showed that as the impact number increased, the strain rate approximately showed a proportional increase, and the plateau region of the dynamic stress–strain curve became more prominent. Besides, when the repeated impacts increased, the maximum strain and dynamic toughness both exhibited upward trends, while the peak stress decreased. The average toughness was positively correlated with the strain rate. Additionally, under high repeated impact loads, a single crack propagated rapidly within the UHPFRC specimen after single impact. Conversely, cracks propagated from the center to the periphery on the surface of the specimen when repeated loads were low. Furthermore, a quantitative evaluation method for the damage of UHPFRC under repeated impact loads was proposed based on the characteristic parameters of the gray‐level co‐occurrence matrix (GLCM).

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“…ECC has been widely recognized for its high toughness, structural deformation properties, and crack width control capacity [ 24 , 25 ], which meet the needs of the problem mentioned earlier in (I). Meanwhile, ECC is made of cementitious binders, superfine aggregates with an average particle size of 110 μm, fibers, and water, and the total size of the mixture is much smaller than conventional concrete [ 21 , 26 , 27 ], which also meets the needs of the problem mentioned earlier in (II). Some studies showed that the bonding between ECC and different types of concrete is more satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Exploration of Economic Polypropylene-Fiber-Reinforced ECC with Superfine River Sand (SSPP-ECC) Applied to a Bridge Pavement Leveling Overlay

et al. 2022

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In response to the current common disease of concrete leveling overlays of bridge pavement in China, the feasibility of using an economic SSPP-ECC with local waste superfine sand as an alternative material for a leveling overlay was proposed in this study. To evaluate the interface bonding property in the girder between the SSPP-ECC and concrete, a slant shear test and split tensile test were designed to study the interfacial shear and tensile properties of the ordinary concrete/ordinary concrete (OC/OC) and ordinary concrete/SSPP-ECC (OC/ECC), where the results showed that SSPP-ECC could significantly improve the interface shear stress and split tensile strength compared to ordinary concrete. Furthermore, the damage status of OC/ECC no longer involved fracturing along the interface; instead, each of the two substrates was partially destroyed, which revealed that OC/ECC had a high bonding effect. Moreover, a restrained shrinkage test was carried out to evaluate the shrinkage property of SSPP-ECC, where the result showed that the shrinkage strain of SSPP-ECC was slightly lower than concrete, where the average cracking time for SSPP-ECC was far longer than for ordinary concrete under the same ambient drying conditions; furthermore, the stress rate for SSPP-ECC revealed that it was a low-cracking-risk material. Meanwhile, the crack width of SSPP-ECC was only 0.1 mm after 35 d, which showed that SSPP-ECC had a more substantial crack width control capacity relative to concrete. The test results initially verified the feasibility and great potential of economic SSPP-ECC applied in a bridge pavement leveling overlay.

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Development of engineered cementitious composites (ECC) using artificial fine aggregates

Cited by 62 publications

References 53 publications

Study on mechanical properties of (1 % PVA fiber +1 % Steel fiber) PS‐ECC under the coupling effects of elevated temperature and dynamic loads

Study on mechanical properties of (1 % PVA fiber +1 % Steel fiber) PS‐ECC under the coupling effects of elevated temperature and dynamic loads

A novel damage evaluation method for ultra‐high‐performance fiber reinforced concrete under multiple impact loads

Preliminary Exploration of Economic Polypropylene-Fiber-Reinforced ECC with Superfine River Sand (SSPP-ECC) Applied to a Bridge Pavement Leveling Overlay

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