Effect of brick aggregate on failure process of mixed recycled aggregate concrete via X-CT

Meng, Tao; Wei, Huadong; Dai, Dawang; Liao, Jingping; Ahmed, Sara

doi:10.1016/j.conbuildmat.2022.126934

Cited by 44 publications

(12 citation statements)

References 33 publications

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“…Studies on the basic mechanical properties showed that [27][28][29][ [27][28][29] the mechanical properties of recycled concrete showed a decreasing trend with increasing recycled brick aggregate content. With the increase of recycled brick aggregate, the compressive strength and split tensile strength of concrete gradually decreased.…”

Section: Current Research Status Of Recycled Brick Aggregate Concretementioning

confidence: 99%

Review of Fracture Properties and Research Methods of Fiber Recycled Concrete

Tong

2024

AJST

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Aiming at the background of the application of fracture mechanics in fiber recycled concrete as well as the shortcomings of the current research, the relevant results and progress are summarized from three aspects, namely, the basic theory of fracture mechanics of fiber recycled concrete and the research progress of the fracture properties of fiber recycled concrete as well as the testing methods of the fracture of fiber recycled concrete, respectively. The development history of the application of fracture mechanics in concrete is described, three fracture forms, fracture process zones and three softening curve models of concrete are introduced, and it is proposed to combine the bilinear softening curve and the virtual crack zone model to construct the ontological relationship of the whole process of concrete cracking. The current research status of recycled brick aggregate concrete and polypropylene coarse fiber concrete is introduced. The incorporation of recycled brick aggregate adversely affects the workability, basic mechanical properties and fracture properties of concrete. The reinforcing effect of polypropylene fibers on concrete can effectively improve the adverse effects of brick aggregate on concrete, which opens up the research prospect of green concrete and has high research value. The applications of three-point bending test, four-point bending test and DIC technique in the study of concrete fracture characteristics are introduced.

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Section: Current Research Status Of Recycled Brick Aggregate Concretementioning

confidence: 99%

Review of Fracture Properties and Research Methods of Fiber Recycled Concrete

Tong

2024

AJST

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“…There is some research concerning the durability of concrete containing coarse RBA [33][34][35][36][37][38][39]. Only a few papers were found regarding the durability of mortar or concrete made with RBS.…”

Section: Durability Of Concrete or Mortarmentioning

confidence: 99%

Performance and durability of self-compacting mortar with recycled sand from crushed brick

Zhao¹,

Duan²,

Hubert³

et al. 2022

Journal of Building Engineering

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“…As a result, the concrete sector must seek out other, long-term building materials [15][16][17][18][19]. Using waste materials, industrial by-products, and recycled aggregate as an alternative to concrete ingredients is one of the most acceptable ways to achieve sustainability in concrete production [20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Steel Fiber on the Strength and Flexural Characteristics of Coconut Shell Concrete Partially Blended with Fly Ash

Prakash¹,

Divyah²,

Srividhya³

et al. 2022

Materials

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The construction industry relies heavily on concrete as a building material. The coarse aggregate makes up a substantial portion of the volume of concrete. However, the continued exploitation of granite rock for coarse aggregate results in an increase in the future generations’ demand for natural resources. In this investigation, coconut shell was used in the place of conventional aggregate to produce coconut shell lightweight concrete. Class F fly ash was used as a partial substitute for cement to reduce the high cement content of lightweight concrete. The impact of steel fiber addition on the compressive strength and flexural features of sustainable concrete was investigated. A 10% weight replacement of class F fly ash was used in the place of cement. Steel fiber was added at 0.25, 0.5, 0.75, and 1.0% of the concrete volume. The results revealed that the addition of steel fibers enhanced the compressive strength by up to 39%. The addition of steel fiber to reinforced coconut shell concrete beams increased the ultimate moment capacity by 5–14%. Flexural toughness was increased by up to 45%. The span/deflection ratio of all fiber-reinforced coconut shell concrete beams met the IS456 and BS 8110 requirements. Branson’s and the finite element models developed in this study agreed well with the experimental results. As a result, coconut shell concrete with steel fiber could be considered as a viable and environmentally-friendly construction material.

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Effect of brick aggregate on failure process of mixed recycled aggregate concrete via X-CT

Cited by 44 publications

References 33 publications

Review of Fracture Properties and Research Methods of Fiber Recycled Concrete

Review of Fracture Properties and Research Methods of Fiber Recycled Concrete

Performance and durability of self-compacting mortar with recycled sand from crushed brick

Effect of Steel Fiber on the Strength and Flexural Characteristics of Coconut Shell Concrete Partially Blended with Fly Ash

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