<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>With the rapidly developing road transport, there is a demand for new roads to be constructed and for the existing ones to be repaired or extended. The base of any road is its foundation, usually made of crushed or uncrushed aggregate. To be used for road foundation purposes, a material needs to meet many requirements, as imposed by relevant standards. One of the basic tests to assess the suitability of an aggregate is to determine its California bearing ratio (CBR).</p>
<p>This paper presents the results of CBR tests for mixed aggregate with the grading of 0–31.5 and 0–63 mm. Detailed assessments were carried out for penetration curves, which in many cases need to be adjusted to meet industry standards. The adjustment of plunger penetration curves in aggregate samples causes CBR to increase compared to the original curves.</p>
</abstract>

With the rapidly developing road transport, there is a demand for new roads to be constructed and for the existing ones to be repaired or extended. The base of any road is its foundation, usually made of crushed or uncrushed aggregate. To be used for road foundation purposes, a material needs to meet many requirements, as imposed by relevant standards. One of the basic tests to assess the suitability of an aggregate is to determine its California bearing ratio (CBR).
This paper presents the results of CBR tests for mixed aggregate with the grading of 0–31.5 and 0–63 mm. Detailed assessments were carried out for penetration curves, which in many cases need to be adjusted to meet industry standards. The adjustment of plunger penetration curves in aggregate samples causes CBR to increase compared to the original curves.

An assessment of how penetration curve adjustment affects the California bearing ratio (CBR)

Studia Geotechnica et Mechanica

This work is licensed under the Creative Commons Attribution 4.0 International License.

With the rapidly developing road transport, there is a demand for new roads to be constructed and for the existing ones to be repaired or extended. The base of...

An assessment of how penetration curve adjustment affects the California bearing ratio (CBR)

Article Category: Original Study

Published Online: Oct 09, 2021

Page range: 323 - 336

Received: Feb 09, 2021

Accepted: May 18, 2021

DOI: https://doi.org/10.2478/sgem-2021-0017

Keywords
CBR, pavement structure, subbase, roadbase

© 2021 Łukasz Bednarek, published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

An assessment of how penetration curve adjustment affects the California bearing ratio (CBR)

Article Category: Original Study

Published Online: Oct 09, 2021

Page range: 323 - 336

Received: Feb 09, 2021

Accepted: May 18, 2021

DOI: https://doi.org/10.2478/sgem-2021-0017

KeywordsCBR, pavement structure, subbase, roadbase

© 2021 Łukasz Bednarek, published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
CBR, pavement structure, subbase, roadbase