QA/QC of Subgrade and Embankment Construction: Technology Replacement and Updated Procedures

Ganju, Eshan; Prezzi, Mônica; Salgado, Rodrigo; Siddiki, Nayyar Zia; Sommer, Kurt

doi:10.5703/1288284315521

Cited by 1 publication

(1 citation statement)

References 21 publications

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“…Investigating the quality of the subgrade requires direct access to the subgrade, and the dynamic cone penetrometer (DCP) test has been widely used to determine the California bearing ratio (CBR) or resilient modulus (M r ) of the subgrade due to its rapid setup and simplicity [27][28][29][30][31][32][33][34][35][36]. Results from the DCP tests can be used not only for the quality assessment of newly prepared subgrade but also for in-service roadways when adopting maintenance strategies.…”

Section: Introductionmentioning

confidence: 99%

A Case Study on Distresses of Concrete Pavements Supported on a Retaining Wall

Lee,

Koirala,

Choi

et al. 2023

Applied Sciences

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Embankments and retaining walls are integral parts of the bridge system and provide a smooth transition from lower elevations (i.e., roadways) to higher elevations (i.e., bridge decks). Performances of pavement structures supported on embankments or retaining walls are directly related to their conditions. This paper presents a comprehensive case study of the evaluation of pavement structures supported on an in-service mechanically stabilized earth (MSE) wall that showed significant distresses, such as lane separation, faulting, lane settlement, and tilting of the MSE wall. The conditions of the pavement structures were evaluated via visual observations, falling weight deflectometer (FWD) tests, and coring through pavement structures. The conditions of the MSE wall were evaluated through dynamic cone penetrometer (DCP) tests, cone penetration tests (CPTs), LiDAR surveys, and soil borings. Detailed analysis of the data obtained in this study provides valuable insights into potential distress mechanisms.

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