Study on Slipform Paving of Concrete Containing Alkali-Free Accelerators on Roadway Floor DOI Open Access

Yongjing Deng,

Guanguo Ma, Zhenjiao Sun

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6298 - 6298

Published: Dec. 23, 2024

Aiming at the problems of collapse, deformation, and displacement in concrete paving roadway floors, this paper adopts way adding alkali-free accelerators to on both sides, through mechanical analysis, single factor experiment, orthogonal polynomial fitting method, determines relevant parameters sliding form floor from two aspects material size. The results show that FSA-AF liquid accelerator is more suitable for than J85 powder accelerator. When dosage reaches 8%, decreasing trend initial setting time curve tends be flat. deformation resistance containing positively correlated with Concrete side pressure pavement height. can reduce compressive strength concrete; retention rate all ages are highest when 7%. A water–cement ratio 0.4 a 9% optimal combination meet four evaluation indexes. According width estimation formula, should set 14 cm.

Language: Английский

Revolutionizing road repair: advancing sustainable precast asphalt technology DOI Creative Commons

Alessandra Amin,

Magdi El-Emam,

Ibrahim Ismail

et al.

HBRC Journal, Journal Year: 2025, Volume and Issue: 21(1), P. 42 - 64

Published: May 4, 2025

Language: Английский

Citations

0
Experimental investigation on durability of prefabricated rollable asphalt: Creep and fatigue performance evaluation DOI Creative Commons
Mahdi Shojaei, Hajar Share Isfahani,

Sayyed Mahdi Abtahi

et al.

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 21, P. e03527 - e03527

Published: July 14, 2024

Rollpave, a thin prefabricated rollable asphalt layer produced in factory and rolled on reel for laying the existing surface, has attracted attention pavement industry due to its rapid treatment capabilities. However, long-term durability of Rollpave needs further evaluation before considering widespread use. This study aims assess by evaluating fatigue creep performance modified bitumen mixture. The results highlight that stiffness at −12°C is half corresponding value virgin bitumen, lowering temperature −18°C increases 78.44 MPa. At same time, it still 20 MPa less than bitumen. Besides, showed life 23 times greater 20°C strain levels 5 %, better stress relaxation ability leading damage endurance. Additionally, observed flexural mixture drops only % after 600,000 cycles under 400 µɛ repeated loading. Furthermore, indicated although sensitive temperature, noticeable recovery rutting resistance, with average non-recoverable compliance percent level 3.2 kPa 64°C being 0.213 kPa−1 54 %. dynamic test also nearly 20,000 cumulative permanent 50°C 9000th loading cycle.

Language: Английский

Citations

2
Tannic acid/γ-aminopropyltriethoxysilane/molybdenum disulfide composite prepared by co-deposition as an environment-friendly modifier for crumb-rubber-modified asphalt DOI

Qiqi Tan,

Hongzhou Zhu, Song Yang

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 456, P. 139191 - 139191

Published: Nov. 21, 2024

Language: Английский

Citations

1
Precast versus In Situ Concrete: Developing an Initial Feasibility Study for Early Decision-Making in the Australian Construction Industry DOI
Marjan Pouraghajan, Sara Omrani, Robin Drogemuller

et al.

Journal of Architectural Engineering, Journal Year: 2024, Volume and Issue: 30(4)

Published: Sept. 24, 2024

Language: Английский

Citations

0
Investigation of a new sustainable precast carpeted asphalt ultra-thin overlay: Structural design, dynamic response properties in a real environment, and environmental benefits DOI

Qiqi Tan,

Hongzhou Zhu, Hongduo Zhao

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 450, P. 138592 - 138592

Published: Oct. 13, 2024

Language: Английский

Citations

0
Study on Slipform Paving of Concrete Containing Alkali-Free Accelerators on Roadway Floor DOI Open Access

Yongjing Deng,

Guanguo Ma, Zhenjiao Sun

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6298 - 6298

Published: Dec. 23, 2024

Aiming at the problems of collapse, deformation, and displacement in concrete paving roadway floors, this paper adopts way adding alkali-free accelerators to on both sides, through mechanical analysis, single factor experiment, orthogonal polynomial fitting method, determines relevant parameters sliding form floor from two aspects material size. The results show that FSA-AF liquid accelerator is more suitable for than J85 powder accelerator. When dosage reaches 8%, decreasing trend initial setting time curve tends be flat. deformation resistance containing positively correlated with Concrete side pressure pavement height. can reduce compressive strength concrete; retention rate all ages are highest when 7%. A water–cement ratio 0.4 a 9% optimal combination meet four evaluation indexes. According width estimation formula, should set 14 cm.

Language: Английский

Citations

0