Flexural performance of concrete beams containing engineered cementitious composites

Shanour, Ali S.; Said, Mohamed; Arafa, Alaa I.; Maher, Amira

doi:10.1016/j.conbuildmat.2018.05.238

Cited by 57 publications

(17 citation statements)

References 12 publications

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“…The physical and substance credits of fly garbage contrast among start strategies, coal source, and particle shape. However, the physical properties of flyash are as displayed in table 2 [18]. Polypropylene fiber (PPF) is a sort of straight polymer engineered fiber got from propylene polymerization.…”

Section: A Materials and Methodsmentioning

confidence: 99%

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Experimental Investigation on Mechanical Properties of Engineered Cementitious Composites

Kumar¹,

Abhiram²,

Chauhan³

et al. 2022

cea

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The hybridization cycle is utilized in this review to increment mechanical properties of Engineered Cementitious Composite (ECC). Two kinds of blend extents are utilized in this examination, in blend 1 mono fibre and blend 2 half breed strands. Then the various techniques utilized for oneself recuperating of cementitious materials, for example the utilization of empty strands, microencapsulation, broad specialists and mineral admixtures, microorganisms and shape memory are summed up. Designed Cementitious Composite (ECC) is another sort of concrete-based materials, which has interesting properties contrasted and customary cementitious materials. Further, a rundown about the examination status of self-mending on ECC is given. This paper presents the Compressive and rigidity of Engineered Cementitious Composites or additionally called as bendable cement under adding various sorts of mineral admixtures like (GGBS), and fly debris class F (FA). Specifically examined by adding PVA and PP (polypropylene) strands and conplast 430 high reach water diminishing specialist. It shows that ECC bears extraordinary potential in acknowledging viable self-recuperating because of its exceptional miniature break conduct and tight break width control property joined with its generally high level of cementitious parts and low water-folio proportion. In the wake of leading the different tests on blend extents, it is presumed that, finally the PVA and PP filaments were utilized in blend extents, the uniaxial compressive strength and direct rigidity are giving best outcomes and 1.12% of super plasticizer added to it, then the functionality is likewise expanded by looking at this multitude of two tests, and the ECC giving great outcomes than the traditional cement. The principal subject or point of this task is to give the pliable rigidity to the substantial and to stop the devastating disappointments of the designs.

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Section: A Materials and Methodsmentioning

confidence: 99%

“…Composites a few kinds of minerals like Fly debris, GGBS and Silica seethe is utilized in the ECC blend extents 1&2. And also the fibres are PVA and PP fibre used in this mix Table 2 [18] shows the mix ratio which is used in this experiment [19]. In the ECC mix, sand is used as the fine aggregate.…”

Section: B To Analyze the Properties Of Engineered Cementitiousmentioning

confidence: 99%

Experimental Investigation on Mechanical Properties of Engineered Cementitious Composites

Kumar¹,

Abhiram²,

Chauhan³

et al. 2022

cea

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“…where d f and l f represent the diameter and length of the fiber, respectively, τ f represents the bond coefficient between the PP fiber and the substrate, and usually it is 1.0, 63,65 and f represents the shear coefficient of the edge of the fiber and the cracks of the substrate, with a value of 1/3, 64 x i and θ i are as shown in Figure 15.…”

Section: Tensile Stress Of the Fiber (σ F )mentioning

confidence: 99%

Research on the flexural performance of reinforced engineered cementitious composite beams

Jin

2021

Structural Concrete

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The bending performance of polypropylene fiber reinforced engineered cementitious composite (PP-ECC) beams was studied. A total of five reinforced concrete (RC) beams were prepared and tested. The test variables include matrix type, longitudinal reinforcement diameter, and longitudinal reinforcement ratio. The study found that ECC is an ideal building material to improve the bending performance of RC beams. For the failure mode, even if the ultimate load is reached, no local cracks are observed in the ECC beam. On the contrary, due to the high ductility of the ECC material, multiple microcracks appear in the tension zone of the beam. From the perspective of bending performance, the use of ECC materials as the matrix of RC beams can not only increase the cracking load, yield load, and ultimate load of RC beams but also increase its ductility and energy absorption capacity. A method for predicting the flexural bearing capacity of ECC beams considering the effect of fiber tensile stress is proposed. The experimental data in this study are compared with the experimental data in the previous literature, and the prediction results of this model and other previous models are obtained. The average ratio of the predicted value of the flexural bearing capacity of the RC beam to the experimental value is 0.979, and the coefficient of variation is 0.016.

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“…Chloride corrosion is the main cause of steel corrosion, and steel corrosion is the frst factor afecting the durability of concrete structures [20][21][22]. Chloride penetrates concrete, destroys steel passive flm, and causes steel corrosion [23][24][25]. In recent years, Hong-Bo et al [26][27][28][29][30] studied the infuence of graphite tailings on the properties of cementbased materials and concrete blocks.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Graphite Tailings RC Beams in Chloride Environment

Bo-ya

zhu

Xia

et al. 2023

Advances in Civil Engineering

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This paper investigates the mechanical properties of graphite tailings concrete beams under various curing environments. The results show that the concentration of graphite tailings has an important influence on the mechanical properties of concrete. Finally, the bending characteristics of the beam and the modified bearing capacity calculation formula are obtained, which provides a theoretical basis and the reference value for the construction of green building materials. Through research, the main innovations and main findings of this paper are as follows: (1) In the three kinds of concrete experimental environment, the fracture load and ultimate load of concrete beams with graphite tailings replacement rate of 20% are the largest. (2) In the three kinds of concrete test environment, when the concrete test beams under the same load, with the increase of graphite tailings replacement rate, the mid-span deflection of concrete beams showed a trend of decreasing first and then increasing. When the replacement rate of graphite tailings sand is 20%, the mid-span deflection of the test beam is the smallest. (3) Through experiments, it is found that the normal section bearing capacity of graphite tailings concrete beams after chloride salt erosion conforms to the plane section assumption. After chlorine salt erosion, the strain of the longitudinal tensile steel bar of concrete beams with different graphite tailings sand replacement rates is the same as that of ordinary concrete beams, and the slope of the strain curve is the same, showing a linear trend. The experimental results show that the replacement rate of graphite tailings sand has an insignificant effect on the strain of steel bars. (4) The Gauss function is used to fit the experimental value of normal section bearing capacity of concrete beam, and the calculation formula of normal section ultimate bearing capacity of graphite tailings sand concrete beam under chloride environment is established. The research results of this paper have significant reference value for the study of mechanical properties of graphite tailings sand concrete components.

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Flexural performance of concrete beams containing engineered cementitious composites

Cited by 57 publications

References 12 publications

Experimental Investigation on Mechanical Properties of Engineered Cementitious Composites

Experimental Investigation on Mechanical Properties of Engineered Cementitious Composites

Research on the flexural performance of reinforced engineered cementitious composite beams

Flexural Behavior of Graphite Tailings RC Beams in Chloride Environment

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