Results 11 to 20 of about 525,473 (174)

Permanent deformation characteristics of unsaturated subgrade soils under cyclic loading

open access: yesCase Studies in Construction Materials
Excess permanent deformation of subgrade may cause critical rutting in pavements, and subsurface water significantly affects the accumulation of permanent deformation.
Xuanxuan Chu   +4 more
doaj   +2 more sources

Numerical Method of Flexible Pavement considering Moisture and Stress Sensitivity of Subgrade Soils

open access: yesAdvances in Civil Engineering, 2019
Weaknesses of the subgrade structure induce the asphalt surface diseases and shorten the service life of flexible pavement. However, the resilient modulus (Mr) of subgrade soils is difficult to be evaluated directly since the subgrade is hidden and ...
Jue Li   +4 more
doaj   +2 more sources

Factors Affecting Resilient Behavior of Subgrade Soils in Saudi Arabia

open access: yesJournal of King Saud University: Engineering Sciences, 2002
This paper presents a study of the effect of relative density and moisture content on the resilient behavior of subgrade soils in Saudi Arabia. Thirteen representative soil samples, representing subgrade soils from all over the Kingdom, were tested at ...
T. Al-Refeai, A. Al-Suhaibani
doaj   +2 more sources

Influence of Humidity State on Dynamic Resilient Modulus of Subgrade Soils: Considering Repeated Wetting-Drying Cycles

open access: yesAdvances in Materials Science and Engineering, 2021
The service performance of subgrade depends on the dynamic resilient modulus (MR) of subgrade soils. Meanwhile, due to complicated conditions such as rainfall infiltration, high temperature evaporation, and groundwater level fluctuations, it can be ...
Gongfeng Xin   +4 more
doaj   +1 more source

The Influence of Subgrade Subsidence on Train Track Dynamic Interaction [PDF]

open access: yes, 2012
Railways 2012 The First International Conference on Railway Technology: Research, Development and Maintenance Las Palmas de Gran Canaria, Spain 18-20 April 2012This paper reports results from a numerical model to calculate subgrade settlement in ...
E.J. OBrien   +5 more
core   +1 more source

Road pavement defect investigation using treated and untreated expansive road subgrade materials with varying plasticity index [PDF]

open access: yes, 2022
Road pavement defect has been a major issue in the construction industry leading to a high cost of maintenance and sometimes a total reconstruction of the road. Expansive road subgrade materials are one of the major causes of these road defects.
Booth, Colin A.   +2 more
core   +1 more source

Frost Heaving and Induced Pressure of Unsaturated Interfacial Zone between Gravel Ballast and Subgrade

open access: yesApplied Sciences, 2022
Most existing railroads are composed of gravel ballast. One of the major issues with gravel ballast is frost damage in cold regions. Gravelly soils are known to be not prone to frost action due to their low water retention capacity and high hydraulic ...
Jinung Do
doaj   +1 more source

Characterization of subgrade soil mixed with recycled asphalt pavement

open access: yesJournal of Traffic and Transportation Engineering (English ed. Online), 2018
Due to awareness to greener environment, use of recycled asphalt material has become popular in asphalt pavement industry. The use of recycled asphalt pavement (RAP) materials in subgrade soil can be an additional scope of utilizing RAP.
Md Mehedi Hasan   +2 more
doaj   +1 more source

Comparison of numerical modeling results from laboratory and field obtained unsaturated flow parameters [PDF]

open access: yesMATEC Web of Conferences, 2021
Moisture and suction variation beneath pavement contribute significantly to the volumetric deformation of expansive subgrade in response to climatic loading.
Ahmed Asif   +3 more
doaj   +1 more source

STABILISASI TANAH LIAT DENGAN KAPUR PADA KONSTRUKSI BADAN JALAN HUTAN DI PULAU LAUT

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
Subgrade  construction is an important part in forest  road building,  Subgrade soils with a high clay content  could  not be used satisfactorily as forest  road construction material  unless it is treated  to increase its stability.
Rahardjo S Suparto, S Sutopo
doaj   +1 more source

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