Reliability analysis and experimental investigation of impact resistance of concrete reinforced with polyolefin fiber in different shapes, lengths, and doses

Moein, Mohammad Mohtasham; Saradar, Ashkan; Rahmati, Komeil; Rezakhani, Yousof; Ashkan, Seyed Arash; Karakouzian, Moses

doi:10.1016/j.jobe.2023.106262

Cited by 11 publications

(1 citation statement)

References 73 publications

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“…Therefore, the performance of RFAs can be improved by selecting better-quality masterbatch materials, and the better the quality of the RFA, the better the performance of the prepared RAC [14]. In addition, modification techniques can also be used to change the properties of RACs, including adding geopolymers to fill in the original defects of recycled aggregates [15], adding fibers to reinforce the tensile possessions of RACs [16], increasing the proportion of cement to compensate for the loss of concrete strength [17], or reducing the water-cement ratio by using highly efficient water reducers [18]. Several investigators have tried to enhance the mechanical properties performance of RACs by adding reactive powder, i.e., reactive powder concrete (RPC).…”

Section: Introductionmentioning

confidence: 99%

Effects of Multi-Walled Carbon Nanotubes and Recycled Fine Aggregates on the Multi-Generational Cycle Properties of Reactive Powder Concrete

Wu,

Liu,

et al. 2024

Sustainability

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In order to investigate the effect of multi-walled carbon nanotubes (MWCNTs) on the recyclable properties of multi-generation recycled concrete, the physical properties of multi-generation recycled fine aggregate and the mechanical properties of multi-generation recycled concrete with different dosages of MWCNTs were tested, and the enhancement mechanism was analyzed by scanning electron microscopy (SEM). The results showed that the apparent density of multi-generation recycled fine aggregate with 0.05 wt% MWCNTs was increased by 1.04~2.03%, the crushing value was decreased by 38.21~49.45%, the compressive strength of the concrete prepared by it was increased by 11.11~18.96%, the splitting tensile strength was increased by 10~43.94%, the flexural strength was increased by 13.62~22.23%, and the mechanical properties were analyzed by scanning electron microscopy (SEM). Combined with the scanning electron microscope image analysis, the MWCNTs can fill the pores inside the specimen, bridge the cracks, and retard the decrease in concrete strength after multi-generation recycling.

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