Results 41 to 50 of about 1,973 (206)

Development of a Correlation between the Resilient Modulus and CBR Value for Granular Blends Containing Natural Aggregates and RAP/RCA Materials

Advances in Materials Science and Engineering, 2019
Limited supplies of natural aggregates for highway construction, in addition to increasing processing costs, time, and environmental concerns, have led to the use of various reclaimed/recycled materials.
Muhammad Arshad
doaj   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Bender element sensor technology to quantify local stiffness enhancement of geogrid-stabilized aggregate specimens [PDF]

E3S Web of Conferences
Geogrids improve pavement performance and extend lifespan by making the unbound aggregate base/subbase course stiffer. Extruded (i.e., punched and drawn) geogrids are widely used in pavement applications. This paper presents an experimental evaluation of
Wang Han, Kang Mingu, Kim Youngdae, Qamhia Issam I. A., Tutumluer Erol, Shoup Heather   +5 more
doaj   +1 more source

Repeated load triaxial tests of WickGrid™ stabilized base materials

E3S Web of Conferences
In road construction, geogrids are frequently used to stabilize the base course through their lateral confinement applied to the base materials. Wicking fabrics are also used to improve road performance by installing them at the road base and subgrade interface to remove water from the road and reduce the build-up of pore water pressure while providing
Liu Jiming, Lin Cheng, Liu Minghao, Bhat Sam   +3 more
openaire   +2 more sources

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

Deep Underground Science and Engineering, EarlyView.
This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang, Guoyao Xu, Liyuan Liu, Yao Zhang, Sitao Zhu, Hongyang Chu, Kaikai Zhao   +6 more
wiley   +1 more source

Performance analysis of Gradient Boosting Regressor using K-fold and group K-fold for predicting permanent deformation in tropical soils

Journal of Materials Research and Technology
This study conducts a comparative analysis of k-fold and group k-fold cross-validation techniques for predicting permanent deformation in tropical soils using the Gradient Boosting Regressor (GBR).
Francisco Michael Gonçalves Saraiva, Antônio Carlos Rodrigues Guimarães, Orivalde Soares da Silva Júnior, Sergio Neves Monteiro, Lisley Madeira Coelho   +4 more
doaj   +1 more source

Calculating rutting of some thin flexible pavements from repeated load triaxial test data [PDF]

International Journal of Pavement Engineering, 2014
This paper describes parts of a Nordic pavement performance prediction model study (at the project level of the NordFoU project) where a material performance model, developed at VTT research centre in Finland, has been selected as a mean of calculating the permanently accumulated (plastic) deformation (i.e. rutting) of unbound granular materials (UGMs)
Qiao, Yaning, Dawson, Andrew, Huvstig, Anders, Korkiala-Tanttu, Leena   +4 more
openaire   +3 more sources

Feeling Better Before, Not After: An Ecological Momentary Assessment of Affect Around Exercise in Women With Eating Disorders

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Maladaptive exercise includes excessive, compulsive, or compensatory exercise and is a common eating‐disorder (ED) symptom associated with increased severity, slower rates‐of‐recovery, and faster rates‐of‐relapse. Affect‐regulation theories posit that maladaptive exercise functions to reduce high negative affect (NA), although ...
Danielle A. N. Chapa, Kelsie T. Forbush, Yiyang Chen, Courtney E. Costain, Samiya I. Rasheed   +4 more
wiley   +1 more source

Predictive models used to estimate the resilient modulus of subgrade soil for pavement design

Transportes
Obtaining the resilient modulus (MR) of the subgrade soils to be used in mechanistic empirical pavement design models, such as MeDiNa, is a complex and expensive process, due to the high costs of acquiring and operating the repeated triaxial load ...
Antonio Júnior Alves Ribeiro, Carlos Augusto Uchôa da Silva , Suelly Helena de Araújo Barroso , João Paulo Ferreira de Lacerda, Pedro Mateus Santos Oliveira   +4 more
doaj   +1 more source