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Laboratory testing, field construction, and decade long performance evaluation of jointed plain concrete pavement with FRP dowels
International Journal of Pavement Engineering ( IF 3.8 ) Pub Date : 2018-08-20 , DOI: 10.1080/10298436.2018.1508841
P. V. Vijay 1 , Hui Li 2 , VS Hota GangaRao 3
Affiliation  

In this study, laboratory and field constructed Jointed Plain Concrete Pavements (JPCP) were evaluated with Fibre Reinforced Polymer (FRP) dowels and compared with JPCP consisting of steel dowels. Laboratory evaluations on representative concrete JPCP sections with FRP and steel dowels consisted of static and fatigue testing followed by analytical modelling. Laboratory testing of JPCP with FRP and steel dowels focused on joint deflection and dowel strain data collection for determining Load Transfer Efficiency (LTE) and joint Relative Deflections (RD) under static and 5 million cycles of fatigue load corresponding to a 45 kN (10 kip) wheel load of HS-25 truck. The static data showed low relative deflections for concrete sections with smaller dowel diameter of 25 mm and spacing of 150 mm than the currently used 38 mm diameter dowels with 300 mm spacing. Analytical calculations were carried out to show the effect of applied loads on the bending and shear deflections, and bearing stresses. After laboratory evaluations, new field construction and rehabilitation of JPCP was carried out using FRP and steel dowels. Some of the field evaluations consisted of static, dynamic, and falling weight deflectometer (FWD) tests. After 5 and 13 years of field service, FWD tests showed that the LTE of joints with FRP dowels were around 90% and met the applicable performance requirements.



中文翻译:

FRP销钉连接的普通混凝土路面的实验室测试,现场施工和长达十年的性能评估

在这项研究中,使用纤维增强聚合物(FRP)销钉对实验室和现场建造的节理型普通混凝土路面(JPCP)进行了评估,并与由钢销钉组成的JPCP进行了比较。对具有FRP和钢定位销的代表性JPCP混凝土截面的实验室评估包括静态和疲劳测试,然后进行分析建模。JPCP的FRP和钢制销钉的实验室测试侧重于接头挠度和销钉数据收集,以确定在静态载荷和500万次疲劳载荷循环(对应于45 kN(10 kip))下的载荷传递效率(LTE)和接头相对挠度(RD) )HS-25卡车的车轮载荷。静态数据显示,与目前使用的直径为300 mm的38 mm销钉相比,直径25 mm和150 mm的销钉较小的混凝土截面的相对变形较小。进行了分析计算,以显示施加的载荷对弯曲和剪切变形以及轴承应力的影响。经过实验室评估后,使用FRP和木销进行了JPCP的新现场建设和修复。一些现场评估包括静态,动态和落锤挠度计(FWD)测试。经过5年和13年的现场服务,FWD测试表明,带有FRP销钉的接头的LTE约为90%,并满足适用的性能要求。和承受压力。经过实验室评估后,使用FRP和木销进行了JPCP的新现场建设和修复。一些现场评估包括静态,动态和落锤挠度计(FWD)测试。经过5年和13年的现场服务,FWD测试表明,带有FRP销钉的接头的LTE约为90%,并满足适用的性能要求。和承受压力。经过实验室评估后,使用FRP和木销进行了JPCP的新现场建设和修复。一些现场评估包括静态,动态和落锤挠度计(FWD)测试。经过5年和13年的现场服务,FWD测试表明,带有FRP销钉的接头的LTE约为90%,并满足适用的性能要求。

更新日期:2020-04-20
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