Effects of Using Recycled Aggregates and Large Stones for Base and Subbase Layers on Modulus Properties of Pavements

Coban, Haluk Sinan; Çetin, Bora; Ceylan, Hali̇l; Likos, William J.; Edil, Tuncer B.

doi:10.1007/978-3-030-77230-7_28

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Таким образом, в России протяженность дорог с низкой интенсивностью дороги большая, но такие дороги выделены в отдельную группу дорог только в 2011 1 г. В 2015 г. введены в действие строительные правила 2 , регламентирующие методику проектирование дорог с НИД, а в 2019 и 2020 гг. вышли в свет ПНСТ 3 и ГОСТ 4 , устанавливающие правила конструирования и расчета дорожных одежд переходного и низшего типов для дорог с НИД. Появление этих стандартов завершает процесс разделения методов проектирования дорожных одежд на две группы: традиционные -для дорог общего 1.…”

Section: Introductionunclassified

“…В решении проблемы конструирования дорожных одежд для дорог с НИД специалисты практики и научные работники в области строительства дорог идут путем, проторенным специалистами дорожных департаментов и вузов США, выполняя работы в виде науч-но-технических отчетов 9,10,11,12 с публикацией новых материалов в статьях [1,2,3,4,5] -золоминеральных смесей и зол уноса [6,7,8,9,10];…”

Section: Introductionunclassified

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Influence of soil moisture on the deformation properties of soil-crushed stone samples during compression

et al. 2021

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Introduction. The purpose of the article is to determine the dependence of the influence of soil moisture and the content of crushed stone in a soil-crushed stone sample on the secant modulus of deformation under uniaxial compression. The need for such a mathematical model is necessary in order to introduce correction factors to the values of the stamped deformation moduli of the gravel layer calculated from test data delivered at other soil moisture conditions, e.g. for flume or road tests during a non-calculated period of the year.Materials and methods. Cylindrical samples with a height of 20 cm and a diameter of 10 cm were made to perform tests using a large standard sealing device. The content of crushed stone of a mixture of fractions of 5-10 and 10-20 mm varied in the samples. The methods of saturation of samples with water and their testing by uniaxial compression are given. The rules for processing the experimental results are described, which include: correction of the initial part of the graphical dependence of deformation from pressure and statistical processing of the results. The analysis of methods for calculating the deformation modulus, which are classified into three types, is performed: secant module, tangent module and piecewise linear module. Based on this analysis, a method for calculating the deformation modulus of a soil-crushed stone sample under uniaxial compression is justified.Results. The results of experimental determination of the deformation characteristics of soil-crushed stone samples under uniaxial compression are presented. A mathematical model of the dependence of the deformation modulus of a soil-crushed stone sample from the soil moisture and the content of crushed stone used in the soil-crushed stone mixture is obtained.Discussion and conclusions. Recommendations are given on the application of the research results for the development of an album of standard constructions of road pavement of the lowest type in the districts of the Omsk region.

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Section: Introductionunclassified

Influence of soil moisture on the deformation properties of soil-crushed stone samples during compression

et al. 2021

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“…Previous studies have revealed that recycled aggregates are good alternatives to virgin aggregates for several reasons including similar or improved stress-strain behavior and environmental benefits such as a decrease in energy consumption and gas emissions (38,39). Recycled asphalt pavement (RAP) and recycled concrete aggregate (RCA) are the most commonly used RAB in pavement foundation construction (40)(41)(42). RAP materials are obtained through milling of flexible pavements and consist of virgin aggregates covered with aged asphalt binder with hydrophobic properties, while RCA materials are produced from old rigid pavements and concrete structures which contain virgin aggregates and residual mortar that is prone to show hydrophilic properties (16,43).…”

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Improving Field Moisture Monitoring of Recycled and Virgin Aggregates

Aydin

Velasquez

Izevbekhai

et al. 2023

Transportation Research Record: Journal of the Transportation R

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The structural capacity of pavement foundation is altered by moisture conditions. Reliable moisture monitoring of geomaterials throughout pavement service life is critical for asset management by transportation agencies. Improved moisture sensing enables transportation officials and practitioners to better understand performance of complex recycled materials under frequent extreme rain events. Although moisture sensing for geomaterials has improved significantly, there are still challenges when using sensors in recycled materials that may contain unhydrated cement, aged asphalt, or both. Challenges include the development of calibration functions that account for the presence of recycled materials and robust installation procedures, as technology was developed mostly for agricultural practices. In this study, a series of experiments were conducted to suggest improvements for installation techniques and data interpretation of soil moisture and water potential sensors. Suggested installation guidelines minimize wash-out and erosion potential at the soil–sensor interface. Experimental results indicate a strong bilinear relation between dielectric of recycled materials and water content, with a region of relatively small change governed by dielectric permittivity of air and a region of rapid change controlled by dielectric permittivity of water. Moreover, it was found that dielectric permittivity is not significantly affected by aggregate internal structure as dielectric for a specific moisture content for different compaction degrees is relatively similar. Furthermore, soil water characteristic curves obtained using the water potential sensor and improved installation technique compare reasonably well with laboratory results obtained with traditional equipment. Reliability of both moisture and water potential sensors was improved with the suggested guidelines.

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A review on sustainable use of recycled construction and demolition waste aggregates in pavement base and subbase layers

Abedin Khan,

Balunaini,

Costa

et al. 2024

Cleaner Materials

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Effects of Using Recycled Aggregates and Large Stones for Base and Subbase Layers on Modulus Properties of Pavements

Cited by 3 publications

References 7 publications

Influence of soil moisture on the deformation properties of soil-crushed stone samples during compression

Influence of soil moisture on the deformation properties of soil-crushed stone samples during compression

Improving Field Moisture Monitoring of Recycled and Virgin Aggregates

A review on sustainable use of recycled construction and demolition waste aggregates in pavement base and subbase layers

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