Road Design on Low Bearing Capacity Soils

Virsis, Endijs; Paeglītis, Ainārs; Zariņš, Atis

doi:10.7250/bjrbe.2020-15.481

Cited by 4 publications

(3 citation statements)

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“…However, in engineering works, the condition of the ground can never be totally definite and may establish a number of significant potential risks for projects [10]. The bearing capacity, which is specified as the strength of soil in supporting the loads that are laid onto the ground, becomes one of the most essential evaluation factors.…”

Section: Introductionmentioning

confidence: 99%

Fly Ash Substitution in Lightweight Concrete for Rigid Pavement Construction on Low-Bearing-Capacity Soil

Suryani,

Rizal,

Abdullah

et al. 2023

Sustainability

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Peatlands are more likely to be affected by intense precipitation and soil erosion, thus requiring modifications for stabilized soil and subgrade protection. This experimental study aimed to find a suitable pavement type using fly ash, an unutilized byproduct from coal burning processes, for peatland areas with a low bearing capacity. We designed lightweight concrete specimens using 15% fly ash substitution to be incorporated into rigid pavement construction. The concrete quality was assessed through compressive and flexural strength tests performed at the ages of 7, 14, and 28 days in order to shorten the project durations and prevent further traffic delay. The obtained results suggested that the substitution of fly ash in 15% of the lightweight concrete mixture can be taken into account to achieve a mixture of a lightweight concrete that meets the general specification criteria for cement-treated subbases (CTSBs). Furthermore, the utilization of fly ash as a new material is considered substantial in managing existing waste-related environmental problems, as well as soil stabilization and subgrade protection problems for low-bearing-capacity soil areas.

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Section: Introductionmentioning

confidence: 99%

Fly Ash Substitution in Lightweight Concrete for Rigid Pavement Construction on Low-Bearing-Capacity Soil

Suryani,

Rizal,

Abdullah

et al. 2023

Sustainability

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“…The design of roads and roadbeds should take into account the principles of functioning of highways [3,4]. It is mandatory to conduct engineering and geological investigations of the planned road section, calculation and justification of technological solutions, strict compliance with technical standards of the road for further operation of the road in safe and comfortable conditions [5,6].…”

Section: Introductionmentioning

confidence: 99%

Field Tests of Soils During the Investigation Works

Zhankina¹,

Zhussupbekov²,

Tulebekova³

2022

Bull. of Kaz. Lead. Ac. of Archit. and Const.

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The study of road bases located on subsidence soils is a relevant issue because even though these soils demonstrate considerable strength in a dry state when soaked, they can exhibit sudden subsidence, which can lead to irreparable consequences during the operation of the highway. This article presents the results of laboratory studies of physical and mechanical properties of the soil, the results of field tests of the embankment by plate load test, which in combination provide a completer and more accurate picture of the state of the soil for further design of the highway with minimal costs and losses.

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“…Organic soils should be improved so that they can be used for construction (Rahman et al, 2016). Many methods of soil improvement are known and used around the world (Duraisamy et al, 2007;Hartlen et al, 1996;Huat et al, 2014;Edil, 2003;Virsis et al, 2020). However, regardless of the method, knowledge of the physical and mechanical parameters of organic soil is required.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Organic Soil Compressibility from In-Situ and Laboratory Tests for Road Application

Chmielewska

2021

BJRBE

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Organic soil is characterised by high compressibility and should be improved so that it can be used for construction. The use of every method of soil improvement requires knowledge of the compressibility parameters. One of these parameters is the constrained modulus. The constrained modulus can be determined using laboratory or in-situ tests. In this study, the constrained modulus of organic soil was determined using oedometer and piezocone tests (CPTU). The author analysed subsoil under an approximately 250 m section of a designed road in north-eastern Poland. The constrained modulus of organic soil sampled from four different depths was determined in oedometer tests. Piezocone tests were conducted at 18 points located every 15 m along the length of the section concerned. To determine the constrained modulus based on the cone resistance from CPTU tests, the knowledge of the α and αM coefficients is needed. For the tested soil, the optimal range of the α coefficient from 0.4 to 0.7 was determined. The αM coefficient ranged from 0.4 to 0.8. The value of the constrained modulus of organic soil obtained from the oedometer tests, depending on the effective stress, ranged from approximately 100 kPa to 400 kPa. The constrained modulus of the tested soil decreased with depth, which both research methods proved.

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Road Design on Low Bearing Capacity Soils

Cited by 4 publications

References 0 publications

Fly Ash Substitution in Lightweight Concrete for Rigid Pavement Construction on Low-Bearing-Capacity Soil

Fly Ash Substitution in Lightweight Concrete for Rigid Pavement Construction on Low-Bearing-Capacity Soil

Field Tests of Soils During the Investigation Works

Evaluation of the Organic Soil Compressibility from In-Situ and Laboratory Tests for Road Application

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