Material and structural fatigue performance of 18 m-span reinforced arch structure manufactured by 3D printing concrete as permanent formwork

Engineering Structures, Journal Year: 2025, Volume and Issue: 328, P. 119734 - 119734

Published: Jan. 18, 2025

Language: Английский

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Flexural performance of concrete beams via 3D printing stay-in-place formwork followed by casting of normal concrete

Journal of Sustainable Cement-Based Materials, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: July 16, 2024

In traditional mold-casting for concrete, the process of assembling and demolding formwork is both costly time-intensive, limiting design possibilities complicated shaped composite applications. Autonomous or semi-autonomous 3D concrete printing presents an innovative solution, allowing customization intricate shapes facilitating creation structures. This study develops manufactures a novel beam that incorporates 3D-printed (3DP) ultra-high performance strain-hardening cementitious composites (UHP-SHCC) U-shaped jackets used as stay-in-place formwork, with normal (NC) filled concrete. To evaluate flexural proposed beam, beams cast-in-place post-cast NC, fully cast NC UHP-SHCC are also tested. The these assessed through four-point bending tests, including failure modes, load–displacement response, cracking behavior. Results indicate utilizing 3DP demonstrate superior performance, characterized by deflection-hardening behavior, outperforming other tested configurations.

Language: Английский

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Effects of specimen thickness and fiber length on tensile and cracking behavior of UHPFRC: uniaxial tensile test and micromechanical modeling

Cement and Concrete Composites, Journal Year: 2024, Volume and Issue: unknown, P. 105828 - 105828

Published: Oct. 1, 2024

Language: Английский

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Impact of Concrete Interfaces on the Mechanical Performance of 3D Printed Concrete Structures

Journal of Architectural Engineering, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 8, 2025

Language: Английский

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In-plane and out-of-plane compressive performance of bio-inspired 3 rinted strain-hardening cementitious composite lattice structures

Cement and Concrete Composites, Journal Year: 2025, Volume and Issue: unknown, P. 106070 - 106070

Published: March 1, 2025

Language: Английский

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Advancing Hybrid Fiber-Reinforced Concrete: Performance, Crack Resistance Mechanism, and Future Innovations

Buildings, Journal Year: 2025, Volume and Issue: 15(8), P. 1247 - 1247

Published: April 10, 2025

This research investigates the effects of steel (ST) and synthetic (SYN) fibers on workability mechanical properties HPFRC. It also analyzes their influence material’s microstructural characteristics. ST improve tensile strength, fracture toughness, post-cracking performance owing to rigidity, interlocking, robust adhesion with matrix. SYN fibers, conversely, mitigate shrinkage-induced micro-cracking, augment ductility, enhance concrete under dynamic stress while exerting negative workability. Hybrid fiber systems, which include offer synergistic advantages by enhancing management at various scales augmenting ductility energy absorption capability. Scanning electron microscopy (SEM) has been crucial in investigating fiber–matrix interactions, elucidating hydration, crack-bridging mechanisms, interfacial bonding. establish thick zones that facilitate effective transfer, whereas reduce micro-crack formation long-term durability. Nonetheless, deficiencies persist, encompassing optimal hybrid configurations, enduring fiber-reinforced (FRC), sustainable substitutes. Future investigations should examine multi-scale reinforcing techniques, intelligent for structural health assessment, alternatives. The standardization testing methodologies cost–benefit analyses is essential promote industrial deployment. review offers a thorough synthesis existing knowledge, emphasizing advancements potential HPFRC high-performance construction applications. findings development new, durable, resilient systems solving current difficulties.

Language: Английский

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Flexural behavior of steel plate-UHPC composite wet joints for precast UHPC deck slabs

Engineering Structures, Journal Year: 2025, Volume and Issue: 335, P. 120361 - 120361

Published: April 18, 2025

Language: Английский

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Eccentrically compressed behavior of UHPC columns considering the P-delta effect

Engineering Structures, Journal Year: 2024, Volume and Issue: 312, P. 118273 - 118273

Published: May 29, 2024

Language: Английский

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Flexural cracking behavior of steel-NC-UHPC composite beam under negative bending moment

Engineering Structures, Journal Year: 2024, Volume and Issue: 322, P. 119071 - 119071

Published: Oct. 8, 2024

Language: Английский

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Impact of groove-and-tongue parameters on the bonding behavior between 3d-printed UHP-SHCC and cast normal concrete

Journal of Sustainable Cement-Based Materials, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 10

Published: Sept. 2, 2024

The utilization of 3D-printed formworks represents a significant advancement in traditional construction practices, offering the potential to enhance structural capacity and effectively address reinforcement challenges 3D concrete printing. Ensuring strong bonding between formwork cast is critical for integrity. In this study, 11 composite specimens with varying groove-and-tongue parameters including layer number, spacing, length, thickness tongues undergo splitting tests. Results reveal that increasing tongue's number enhances interfacial tensile strength, whereas tongue spacing has minimal impact on thicker negatively affects strength. An optimized configuration can significantly increase strength from 2.10 MPa 3.66 MPa, maximum rate 70.4% achieving higher value (20.8%) than fully normal concrete. A model proposed, predictions aligning well experimental results.

Language: Английский

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