Optimization of Compaction Quality Control in the Core of Random Fillings within Linear Infrastructures: Application to Metamorphic Slate Fillings

Evelio Teijón-López-Zuazo, Ángel Vega-Zamanillo, Miguel Ángel Calzada-Pérez and Luis Juli-Gándara
Additional contact information
Evelio Teijón-López-Zuazo: Construction and Agronomy Department, Zamora Polytechnical School, University of Salamanca, 49022 Zamora, Spain
Ángel Vega-Zamanillo: Department of Transportation and Projects and Processes Technology, Civil Engineering Technical School of Santander, University of Cantabria, 39005 Santander, Spain
Miguel Ángel Calzada-Pérez: Department of Transportation and Projects and Processes Technology, Civil Engineering Technical School of Santander, University of Cantabria, 39005 Santander, Spain
Luis Juli-Gándara: Department of Transportation and Projects and Processes Technology, Civil Engineering Technical School of Santander, University of Cantabria, 39005 Santander, Spain

Sustainability, 2021, vol. 13, issue 19, 1-19

Abstract: The construction of random fillings from the excavation of medium hardness rocks, with high particle sizes, presents limitations in compaction control. This research applies new control techniques with revised test procedures in the construction of the random fillings core, which constitutes the main part of the embankment, with the bigger volume and provides the geotechnical stability to the infrastructure. The maximum thickness over each of the compacted layers researched that made up the random fillings was 800 mm. As there are many types of rocks, this research is applied to metamorphic slates. Quality control was carried out by applying new research associated with the revision of wheel impression test, topographic settlements, and plate bearing test (PBT). Thus, new test procedures are established, defining efficient thresholds. Comparisons make it possible to choose representative tests, avoiding duplication. The optimization of control reduces inspection times, ensuring quality adapted to the high construction efficiency of diggings. Traditionally, rocks were rejected due to their maximum size, underutilizing the use of high-quality materials. Promoting their utilization implies a better use of resources, and therefore, a higher environmental efficiency. A statistical analysis of the core of 16 slate random fillings was carried out, with a total of 2250 in situ determination of density and moisture content, 75 wheel impression tests, 75 topographic settlement controls, and 75 PBT. The strong associations found between different tests allowed to simplify the quality control.

Keywords: random filling; slate rock; core; wheel impression test; topographic settlement test; plate bearing test (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/13/19/10957/pdf (application/pdf)
https://www.mdpi.com/2071-1050/13/19/10957/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2021:i:19:p:10957-:d:648781

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().