Onsite strength determination for early-opening decision making of high early strength concrete pavement

IF 7.4 2区 工程技术 Q1 ENGINEERING, CIVIL Journal of Traffic and Transportation Engineering-English Edition Pub Date : 2023-04-01 DOI:10.1016/j.jtte.2021.12.005
Katelyn Kosar , Lucio Salles de Salles , Naser Pourakbar Sharifi , Julie Vandenbossche , Lev Khazanovich
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Abstract

High early strength (HES) concrete pavements are commonly opened to traffic within the first 24 h after construction, making early-opening decisions critical for pavement quality and traffic operations. Currently, most state departments of transportation rely on compressive strength testing for early-opening decision making. However, there laboratory tests are labor intensive, costly and not always representative of field strength development. In this study, non-destructive testing (maturity and ultrasonic tomography) was explored for faster and reliable in-situ strength estimations. An experimental section constructed using HES concrete was routinely monitored using compressive testing, maturity, and ultrasonic tomography in the first 24 h after construction. The shear wave velocity, measured using ultrasonic tomography, was able to capture the strength-gain variability within a single slab and between different slabs due to the ability to monitor several locations in a short period of time. Maturity results were consistently conservative in the first 24 h of monitoring. Results show that both maturity testing and ultrasonic tomography are able to replace or add to conventional strength testing for HES concrete pavements to facilitate making the opening decision within the first 24 h. Ultrasonic tomography proved more beneficial as a result of the device's portability, increased speed of testing, and accurate estimations of HES concrete strength for the entire pavement length.

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高早期强度混凝土路面早期开启决策的现场强度测定
高早期强度(HES)混凝土路面通常在施工后的前24小时内通车,这使得早期通车决策对路面质量和交通运营至关重要。目前,大多数州交通部门都依赖抗压强度测试来提前做出开放决策。然而,实验室测试是劳动密集型的,成本高昂,并不总是代表场强的发展。在这项研究中,探索了无损检测(成熟度和超声波断层扫描),以更快、可靠地估计现场强度。在施工后的前24小时内,使用HES混凝土建造的实验段通过抗压测试、成熟度和超声波断层扫描进行常规监测。由于能够在短时间内监测多个位置,使用超声波断层扫描测量的剪切波速能够捕捉单个板内和不同板之间的强度增益变化。在监测的前24小时内,成熟度结果始终是保守的。结果表明,成熟度测试和超声波断层扫描都能够取代或增加HES混凝土路面的传统强度测试,以便于在前24小时内做出开放决策。由于该设备的便携性、测试速度的提高以及对整个路面长度的HES混凝土强度的准确估计,超声波断层扫描被证明是更有益的。
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来源期刊
CiteScore
13.60
自引率
6.30%
发文量
402
审稿时长
15 weeks
期刊介绍: The Journal of Traffic and Transportation Engineering (English Edition) serves as a renowned academic platform facilitating the exchange and exploration of innovative ideas in the realm of transportation. Our journal aims to foster theoretical and experimental research in transportation and welcomes the submission of exceptional peer-reviewed papers on engineering, planning, management, and information technology. We are dedicated to expediting the peer review process and ensuring timely publication of top-notch research in this field.
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