Accurate detection technology of super long bored cast-in-place pile concrete pouring thickness based on ultrasonic inclined plane reflection measurement

Wang, Jinchao; Xu, Hanhua; Wang, Baoliang; Zou, Junpeng; Liu, Houcheng

doi:10.1016/j.measurement.2022.111314

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…Wang et al [35] proposed a detection technology based on ultrasonic slant reflection to visualize the state of media in pile holes of varied sizes, providing a feasible way to accurately measure the state of different media during the pouring process. Low-strain impact integrity testing is a commonly-used non-destructive testing method for pile foundation integrity [36] .…”

Section: Introductionmentioning

confidence: 99%

Field experimental research on vertical load-bearing properties of rock-socketed cast-in-place piles based on pile stress test

Yan,

Zhang,

Bai

et al. 2023

Preprint

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This paper researched the vertical load-bearing capacity of rock-socketed cast-in-place piles using static load tests, and high- and low-strain dynamic tests, based on a construction project in Indonesia. On this basis, an exponential curve model was used to predict the ultimate load capacity of each test pile. The test piles were divided into 800 mm and 600 mm diameter groups. Under the maximum test load conditions, the end resistance of the 800 mm diameter piles accounted for more than 50% of the load, showing good friction end-bearing pile characteristics. In contrast, the maximum end resistance of the 600 mm diameter piles accounted for less than 35% of the load, showing end-bearing frictional pile characteristics where the vertical bearing capacity of a single pile is predominantly borne by the pile side friction resistance. The piles' load-settlement (Q‑s) curves varied slowly, with a maximum settlement of less than 30 mm. The rebound settlement rate at the top of the pile was significant, while the residual settlement was small. Under the maximum load, the pile side friction resistance reached a maximum in the rock-embedded section at the location of the flattest slope of the axial force curve.

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Section: Introductionmentioning

confidence: 99%

Field experimental research on vertical load-bearing properties of rock-socketed cast-in-place piles based on pile stress test

Yan,

Zhang,

Bai

et al. 2023

Preprint

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Critical construction waste minimization strategies for a circular economy in developing countries: A contractor’s perspective in China

Wu,

Weng,

et al. 2024

Int. J. Environ. Sci. Technol.

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Developing countries are often burdened by substantial construction waste (CW) generated through urbanization and urban renewal activities, highlighting the urgent need for effective CW minimization strategies to facilitate their transition towards a circular economy. Although previous studies have examined similar topics at various stages of construction projects from different perspectives, a comprehensive study integrating all critical stages from a contractor’s perspective is still lacking. To fill this gap, this study aims to identify critical CW minimization strategies in developing countries, with a holistic concentration on the planning, design, and construction stages, using China as a case study. æThe research began by compiling a comprehensive list of CW minimization strategies tailored to developing countries, based on an extensive desktop survey and a focus group interview, resulting in 32 strategies. A subsequent questionnaire survey with leading CW management experts and rigorous statistical analyses have identified 9 strategies as critical for minimizing CW in developing countries. Finally, through exploratory factor analysis, seven fundamental principles for CW minimization have been established: “Planning for CW Minimization” for the planning stage; “Optimized Design of Building Structures,” “Optimization of Design Process,” and “Stakeholders’ Efforts in the Design Stage” for the design stage; and “Optimization of Construction Techniques,” “Stakeholders’ Efforts in the Construction Stage,” and “Efforts on CW Disposal” for the construction stage. This study offers valuable insights for stakeholders in developing countries, empowering them to effectively minimize CW through targeted strategies, facilitating the transition to a circular economy and supporting the realization of the "zero-waste city" goal.

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Damage identification of railway bridge underwater foundations based on optical images

Jinchao,

Houcheng,

Yongan

et al. 2023

Urban Climate

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Accurate detection technology of super long bored cast-in-place pile concrete pouring thickness based on ultrasonic inclined plane reflection measurement

Cited by 3 publications

References 20 publications

Field experimental research on vertical load-bearing properties of rock-socketed cast-in-place piles based on pile stress test

Field experimental research on vertical load-bearing properties of rock-socketed cast-in-place piles based on pile stress test

Critical construction waste minimization strategies for a circular economy in developing countries: A contractor’s perspective in China

Damage identification of railway bridge underwater foundations based on optical images

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