Using a novel instrumented roller to estimate soil dry density during compaction

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2 Citations (Scopus)

Abstract

Capturing evolution of density or void ratio during the compaction of geomaterials (soils and unbound granular materials) is essential for improved performance. This study developed a framework where the density evolution during compaction can be estimated using advanced instrumentation. The framework’s suitability was validated using a simulated large-scale soil box (dimensions: 7.5m×4m×0.8m ) experiment mimicking the field conditions. Well-graded sand was compacted in 5 layers of 125 mm using a 1.5-tonne mini roller instrumented with Light Detection and Ranging (LiDAR) systems and a total station tracking system for positioning. The sand’s moisture content was homogenised at 8% (w/w) using a concrete truck. The in-situ sampling for measuring density was carried out using Nuclear Density Gauge (NDG) and sand cone test. The data from sensors were collected using a Data Acquisition (DAQ) system connected to a laptop. The measurement of the deformation in real-time provided an opportunity to estimate the density in real-time, and it was estimated using a machine-learning artificial neural network (ANN) model. The estimated density from deformation measured and NDG at the end of compaction shows that estimated density NDG density with an R = 0.9 for one layer, and for other layers, R was more than 0.8. This novel instrumentation allows the density to be measured during compaction with very high accuracy, which has a massive advantage over conventional approaches and contribute to the true Intelligent Compaction (IC) with an advancement of automation in construction.

Original languageEnglish
Title of host publicationTrends on Construction in the Digital Era - Proceedings of ISIC 2022
EditorsAntónio Gomes Correia, Miguel Azenha, Paulo J.S. Cruz, Paulo Novais, Paulo Pereira
PublisherSpringer
Pages538-546
Number of pages9
ISBN (Print)9783031202407
DOIs
Publication statusPublished - 2023
EventInternational Conference of International Society for Intelligent Construction 2022 - Guimarães, Portugal
Duration: 6 Sept 20229 Sept 2022
Conference number: 3rd
https://link.springer.com/book/10.1007/978-3-031-20241-4 (Proceedings)

Publication series

NameLecture Notes in Civil Engineering
Volume306 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

ConferenceInternational Conference of International Society for Intelligent Construction 2022
Abbreviated titleISIC 2022
Country/TerritoryPortugal
CityGuimarães
Period6/09/229/09/22
Internet address

Keywords

  • Compaction
  • Density
  • Intelligent compaction
  • Light detection and ranging
  • Nuclear density gauge

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