Results 91 to 100 of about 13,524 (233)

On the Moisture Condition of Highway Subgrade [PDF]

, 1960
We cannot design a reliable highway pavement without knowledge of the moisture condition of the paved subgrade because the bearing capacity of subgrade changes much with the moisture condition.
UESHITA, Kano
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Elastic modulus back-calculation for rigid airport pavements and subgrade soils subjected to HWD dynamic loading

This technical note uses regression analysis to examine the conditions of rigid airport pavements and subgrade soils based on Heavy Weight Deflectometer (HWD) results, where back-calculation analysis is applied to estimate the relevant modulus under ...
Oh, E, Bell, P, Chai, G, Ong, DEL, Ma, Z, Sun, J   +5 more
core   +1 more source

Evaluation of Lime Stabilized Subgrade (AA-19)

, 1993
Construction of Section 19 of the Ashland-Alexandria Highway began in 1987. Because native soils have very low CBR values (1 to 3), it was decided to stabilize the soil subgrade with an application of 6% hydrated lime.
Meade, Bobby W., Allen, David L.
core   +1 more source

Geostatistics for Subgrade Characterization

, 1993
Subgrade modulus values for roads around the State of Minnesota can be effectively modelled as spatially correlated lognormal random variables. Based upon this geostatistical model, this report presents guidelines and nomographs for selecting the ...
Barnes, Randal J.
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Dimensionless modulus of subgrade reaction for embedded mat foundation in soft clay under vertical load

The dimensionless modulus of the subgrade reaction for embedded mat foundation in soft clays under the vertical load is suggested in this paper using 3D FEM analysis and the Mohr-Coulomb soil model.
Chang, D.W.;Lin, J.H.;Lin, Y.K.;Lu, F.C.;Kuo, C.J.
core   +1 more source

Facile generation and regulation of oxygen vacancies in BiOCl catalysts for effectively photocatalytic degradation of Rhodamine B

Results in Chemistry
Introducing oxygen vacancies (OVs) in BiOCl catalyst has been regarded as an effective strategy in broadening the narrow range of light response and enhance separation efficiency of photo-induced carriers.
Fei Pei, Xin'’e Yan, Jiajie Dong, Youwen Xu, Songyuan Yao, Wei Zhao   +5 more
doaj   +1 more source

Stability analysis of subgrade cave roofs in karst region

, 2008
According to the engineering features of subgrade cave roof in karst region, the clamped beam model of subgrade cave roof in karst region was set up. Based on the catastrophe theory, the cusp catastrophe model for bearing capacity of subgrade cave roof ...
Zhao, Ming-hua, Cao, Wen-gui, Jiang, Chong   +2 more
core   +1 more source

Analysis of Deformation Impact of Newly Constructed City Railway Subgrade on Adjacent Existing High-speed Railway Subgrade in Deep Soft Soil Areas

Chengshi guidao jiaotong yanjiu
[Objective] To effectively evaluate the impact of newly constructed city railway subgrade on the service performance of existing railway subgrade in deep soft soil areas, it is essential to study the vertical deformation of the new subgrade during ...
LI Zhenhua, WANG Changdan
doaj   +1 more source

Fly Ash Soil Stabilization for Non-Uniform Subgrade Soils, Volume II: Influence of Subgrade Non-Uniformity on PCC Pavement Performance

, 2005
To provide insight into subgrade non-uniformity and its effects on pavement performance, this study investigated the influence of non-uniform subgrade support on pavement responses (stress and deflection) that affect pavement performance.
Rupnow, Tyson, Ceylan, Halil, Harrington, Dale, White, David   +3 more
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Subgrade on High-speed Lines

, 2013
W artykule scharakteryzowano podtorze gruntowe i jego przydatność na liniach kolejowych dużych prędkości. Przedstawiono podstawowe wymagania dla takiego podtorza, a także zalecenia dotyczące projektowania, budowy i utrzymania podtorza.
Skrzyński, E.
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