Cementless ultra-ductile composites reinforced by polyethylene-based short selvedge fibers for sustainable and resilient infrastructure

Park, Se-Eon; Choi, Jeong-Il; Nguyễn, Huy Hoàng; Lương, Quang-Hiếu; Nguyễn, Phương Hoàng; Lee, Bang Yeon

doi:10.1016/j.jobe.2023.106198

Cited by 8 publications

(2 citation statements)

References 17 publications

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“…Table 8 lists the carbon emission factors for each of the main raw materials. 1.514 [64] 0.720 [64] 1.960 [65] Table 9 displays the total carbon emissions for the three types of EGC discussed in To further investigate the environmental benefits of EGC, an environmental assessment is conducted using the total CO 2 emissions per unit volume of concrete (CO 2 -e). Additionally, for comparison, ECC with compressive strengths [60][61][62] similar to the three EGC types discussed in this study are selected to demonstrate the lower carbon footprint of EGC.…”

Section: Basic Mechanical Properties and Environmental Benefits Of Egcmentioning

confidence: 99%

“…Table 8 lists the carbon emission factors for each of the main raw materials. 0.019 [64] 0.009 [64] 0.014 [65] 0.046 [64] 1.915 [64] 1.514 [64] 0.720 [64] 1.960 [65] Table 9 displays the total carbon emissions for the three types of EGC discussed in this paper and their corresponding ECC counterparts for comparison. From the data in Table 9, it can be seen that the total carbon emissions of EGC primarily originate from the production of the alkali activators, whereas the carbon emissions of ECC mainly stem from the production of cement.…”

Section: Basic Mechanical Properties and Environmental Benefits Of Egcmentioning

confidence: 99%

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Experimental Investigation of the Bond Performance at the Interface between Engineered Geopolymer Composites and Existing Concrete

Li,

Tan,

Ouyang

et al. 2024

Buildings

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Engineered geopolymer composite (EGC) exhibits ultra-high toughness, excellent crack control capability, and superior durability, making it highly promising for applications in bridge connecting slabs, wet joints of prefabricated components, and concrete structure reinforcement. However, the bond performance and failure mechanisms at the interface between EGC and existing concrete remain unclear. To elucidate the bond performance of EGC to existing concrete, direct shear tests were conducted on 15 sets of EGC–existing concrete bond specimens. This study explored the effects of existing concrete strength, interface roughness, and EGC strength on the bond performance and mechanisms. Additionally, a direct shear bond mechanical model was established to predict the interface bond strength. The results indicate that, with comparable compressive strength, the preparation of EGC can reduce the total carbon emissions by up to 127% compared to ECC. The failure mode of EGC-existing concrete bond specimens was mainly adhesive failure (except for specimen C30-III-G95), which can be categorized into serrated interfacial failure and alternating crack paths. The change in interface roughness was the primary factor leading to the transition between failure paths. The changes in interface roughness and EGC strength significantly influenced the bond performance. Under their combined effect, the interface bond strength of specimen C50-III-G95 increased by 345% compared to C50-I-G45. In contrast, the improvement in existing concrete strength had a relatively smaller effect on the increase in interface bond strength. Based on the experimental results and the bonding mechanism under direct shear stress, a direct shear bond mechanical model correlating existing concrete strength, interface roughness, and EGC strength was established. The model predictions showed good consistency with the experimental results. This study provides theoretical support and experimental data for the engineering application of EGC.

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Section: Basic Mechanical Properties and Environmental Benefits Of Egcmentioning

confidence: 99%

Section: Basic Mechanical Properties and Environmental Benefits Of Egcmentioning

confidence: 99%

Experimental Investigation of the Bond Performance at the Interface between Engineered Geopolymer Composites and Existing Concrete

Li,

Tan,

Ouyang

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

Mechanical and autogenous healing properties of high-strength and ultra-ductility engineered geopolymer composites reinforced by PE-PVA hybrid fibers

Nguyễn,

Lương

et al. 2023

Cement and Concrete Composites

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Crack-healing of cost-effective engineered cementitious composites reinforced by recycled selvage fiber

Nguyễn,

Lương

et al. 2024

Cement and Concrete Composites

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Cementless ultra-ductile composites reinforced by polyethylene-based short selvedge fibers for sustainable and resilient infrastructure

Cited by 8 publications

References 17 publications

Experimental Investigation of the Bond Performance at the Interface between Engineered Geopolymer Composites and Existing Concrete

Experimental Investigation of the Bond Performance at the Interface between Engineered Geopolymer Composites and Existing Concrete

Mechanical and autogenous healing properties of high-strength and ultra-ductility engineered geopolymer composites reinforced by PE-PVA hybrid fibers

Crack-healing of cost-effective engineered cementitious composites reinforced by recycled selvage fiber

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