Properties of sustainable self-compacting concrete containing activated jute fiber and waste mineral powders

Zhang, Genbao; Wang, Jiaqing; Jiang, Zhiwei; Peng, Cheng; Sun, Junbo; Wang, Yufei; Chen, Changfu; Morsy, Amr M.; Wang, Xiangyu

doi:10.1016/j.jmrt.2022.05.148

Cited by 18 publications

(5 citation statements)

References 56 publications

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“…In conclusion, the combination of bionic honeycomb elements and an anti-collision pier yields high porosity, stiffness, impact, and vibration resistance [19]. The structure can effectively improve energy absorption and alleviate the damage delivered to passengers, which provides a novel idea for crash pier optimization research [20][21][22].…”

Section: Introductionmentioning

confidence: 94%

Mechanical Strength and Energy Absorption Optimization of Biomimetic Honeycomb Anti-Collision Pier

Wei

Wang

et al. 2022

Buildings

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The anti-collision pier plays an irreplaceable role in road traffic protection due to its significance. In this research, the biomimetic honeycomb structure was applied to internal anti-collision pier interior structures. The enhancement of mechanical strength and energy absorption characteristics was explored and optimized by five anti-collision pier honeycomb structures. Finite elements of the piers are designated as 650 mm in diameter and 850 mm in height. Polypropylene Acetate (PLA) material is utilized in this research due to its environment-friendly characteristics. Displacement loading in finite element simulation is 50 mm to the middle region of the model at YOZ direction. The energy-absorbing properties of five optimized honeycomb anti-collision piers at the same force position will be carefully compared. Moreover, the influence of internal hexagon direction-quantity configuration upon loading resistance under displacement loading is outlined. The results determined the best biomimetic structure to be three honeycomb shapes with a central triangle area, with maximum stress of 503.8 MPa and fracture displacement of 58.02 mm. Furthermore, the numerical simulation shows that the number of nest increases has a negative relationship with the effect upon force and deformation of the model. Moreover, the triangular central area is superior to the Y-shape central area in both mechanical strength and energy absorption performance.

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Section: Introductionmentioning

confidence: 94%

Mechanical Strength and Energy Absorption Optimization of Biomimetic Honeycomb Anti-Collision Pier

Wei

Wang

et al. 2022

Buildings

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“…According to the existing theories and data results, the formula for calculating the shear capacity Q gu of grouped stud connectors is recommended, as shown in Formulas ( 2) and (3) [36].…”

Section: Shear Capacity Of Grouped Stud Connectorsmentioning

confidence: 99%

“…Most current studies have concluded that the model provided in the Chinese design code for calculating shear capacity is conservative, and the design provisions for stud shear connectors are given in the Eurocodes, but none of the formulas take into account the contribution of the concrete strength to the connection: when the concrete strength class is above a certain value, its shear capacity no longer changes [17]. On the basis of the analysis, new formulas or adjustment factors for calculating the shear capacity of grouped stud connectors in design codes have been proposed [34][35][36][37][38]. In summary, the shear performance of single-row stud connectors has been analyzed by the previous literature; however, limited research has been conducted on the force behavior of grouped stud connectors and systematic analyses of the stress performance of grouped stud connectors are also rare.…”

Section: Introductionmentioning

confidence: 99%

Study on the Shear Resistance Performance of Grouped Stud Connectors

Lu,

Huang,

2023

Materials

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In order to further investigate the grouped stud effect on the force properties of stud connectors, based on the premise that the correctness of the finite element simulation method, in this paper, a finite element model of grouped stud connectors was developed, and the grouped stud effect and its sensitivity factors were analyzed in order to validate the recommended formula for calculating the shear capacity of grouped stud connectors. Results show that the number of grouped stud rows and stud row spacing have a significant influence on the grouped stud effect, and the unevenness coefficient of grouped stud force is negatively correlated with the number of grouped stud rows as well as the grouped stud row spacing. Grouped stud connectors with commonly used concrete grades greater than C50 and height-to-diameter ratios of greater than 4 in steel–concrete composite structural bridges are insensitive to changes in the concrete strength grades and the length of the studs. The direction of force transmission for grouped stud changes with the change in loading angle and the unevenness coefficient of force for the grouped stud will therefore be reduced. By comparing the results of the 62 existing groups of grouped stud connectors push-out tests, the mean of the tested to calculated value ratio was found to be 1.12, the variance was 0.023, the dispersion was small, and it was shown that the recommended formula has a high degree of accuracy. The results of this paper can be used as a theoretical basis for the study of the shear stress performance of grouped stud connectors.

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“…Different types of fibers, such as steel, glass, polyester, polypropylene, nylon, rayon, carbon, basalt, cotton, and sisal, have been used to reinforce concrete [ 20 , 21 ]. Currently, fiber-reinforced concrete is normally produced using just one type of fiber, and its effectiveness is rather moderate [ 22 , 23 ]. The insertion of single fibers does not appreciably improve the mechanical characteristics of concrete since cracking and failure of concrete occur on several scales [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

A Study of the Compressive Behavior of Recycled Rubber Concrete Reinforced with Hybrid Fibers

Zheng

et al. 2023

Materials

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With the development of the automotive industry, a large amount of waste rubber is produced every year. The application and development of recycled rubber concrete (RRC) can effectively reduce ‘black pollution’ caused by waste rubber. However, the addition of recycled rubber particles can lead to a decrease in the compressive behavior of concrete. Previous research has demonstrated that by preventing crack growth, fiber addition can increase the strength and ductility of concrete. In this work, a total of 28 RRC mixes are designed, and the compressive behavior of RRC reinforced by steel fibers (SFs) and glass fibers (GFs) is investigated. The workability of fresh RRC can be negatively impacted by an increase in both fiber contents, with the GF content having a more notable effect. With the addition of fibers, the maximum increase rates for the compressive strength, elastic modulus, strain at peak stress, and compressive toughness were 27%, 8%, 45%, and 152%, respectively. A constitutive model is concurrently put forward to forecast the stress–strain curves of RRC with various fiber contents. These findings indicate that the maximum improvement in compressive behavior is achieved when the GF content was 0.4% and the SF content was 1.2%. The proposed constitutive model can be used to predict the stress–strain curve of hybrid fiber-reinforced recycled rubber concrete (HFRRRC).

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Properties of sustainable self-compacting concrete containing activated jute fiber and waste mineral powders

Cited by 18 publications

References 56 publications

Mechanical Strength and Energy Absorption Optimization of Biomimetic Honeycomb Anti-Collision Pier

Mechanical Strength and Energy Absorption Optimization of Biomimetic Honeycomb Anti-Collision Pier

Study on the Shear Resistance Performance of Grouped Stud Connectors

A Study of the Compressive Behavior of Recycled Rubber Concrete Reinforced with Hybrid Fibers

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