Results 21 to 30 of about 149,305 (265)

Experimental Modelling of Asphaltic Layers Behaviour at Reflective Fracture from Degraded Pavements – Parametric Studies

Romanian Journal of Transport Infrastructure, 2015
Due to the pavement degradation in time, rehabilitation measures need to be adopted, maintaining the costs as lower as it can. One of the solutions often utilized is to apply a layer of asphalt concrete over the degraded pavement.
Lobază Mihai Gabriel, Dicu Mihai
doaj   +1 more source

Determination of Tensile Strength of Cementitious Composites Using Fracture Parameters of Two-Parameter Model in Concrete Fracture

SSRN Electronic Journal, 2022
In this study, the formulation of the two-parameter model based on the size effect proposed by previous researchers was initially improved to be much more practical. Subsequently, six series of notched and unnotched beams with a size ratio of 1:4 and notched and unnotched square prismatic specimens with a size ratio of 1:6 were tested to verify this ...
İnce, Ragıp, Fenerli, Cenk
openaire   +2 more sources

Effect of internal crack defects on fracture properties of concrete

Shuili Shuiyun Gongcheng Xuebao, 2020
Concrete beams with different types of horizontal crack defect were designed and tested through the three-point bending test to investigate the influence of internal crack defect on the fracture behavior of concrete.
WANG Siyao, HU Shaowei
doaj   +1 more source

Multi-parameter fracture mechanics

Frattura ed Integrità Strutturale, 2019
A mixed-mode geometry has been chosen to investigate a crack propagation using the multi-parameter fracture mechanics concept. The so-called Williams’ series expansion is used for the crack-tip stress field approximation. It has been shown that application of the generalized fracture mechanics concept can be crucial for materials with specific fracture
Lucie Malikova, Hana Simonova, Barbara Kucharczykova, Petr Miarka   +3 more
openaire   +3 more sources

Estimation of the fracture parameters of macro fiber-reinforced concrete based on nonlinear elastic fracture mechanics simulations

Results in Engineering, 2022
Integration of macro synthetic fibers within the concrete mixture provides residual tensile strength and toughness characteristics. Majority of existing studies in this regard focus on the impact of fibers on improving mechanical properties and ...
Mohammad Alhassan, Nour Betoush, Nasser Al-Huthaifi, Abeer Al Dalou   +3 more
doaj   +1 more source

A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining

Energies, 2017
The broken pattern of the overburden strata induced by mining has a non-ignorable effect on overlying strata movement, failure, and safety in mining production.
Dongjing Xu, Suping Peng, Shiyao Xiang, Yunlan He   +3 more
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida, Gisela Cristiane Miyamoto, Daniel da Costa Torres, Ian Setubal Reis Chaves, Jonas do Carmo Paschoalin, Braúlio Lima Nascimento, Luciana Dias Chiavegato   +6 more
wiley   +1 more source

Research on deep learning-based fracture network inversion method for shale gas reservoirs [PDF]

Youqicang pingjia yu kaifa
Shale gas reservoirs are characterized by high compactness and significant heterogeneity, with naturally low production that necessitates hydraulic fracturing technology for enhanced productivity to achieve industrial gas flow.
CHEN Weiming, JIANG Lin, LUO Tongtong, LI Yue, WANG Jianhua   +4 more
doaj   +2 more sources

Sustainable future of construction: the potential of concrete with basalt mini-bars as reinforcement

Economics and Environment
The paper concerns the influence of basalt minibars on the subcritical and critical behaviour of test specimens made of concrete with low-emission cement.
Julita Krassowska, Marta Kosior-Kazberuk, Marta Słowik, Amanda Akram   +3 more
doaj   +1 more source

A new approach to finding effective parameters controlling the performance of multi-stage fractured horizontal wells in low-permeability heavy-oil reservoirs using RSM technique

Journal of Petroleum Exploration and Production Technology, 2020
The application of multi-stage fractured horizontal well (MSFHW) due to its costly operation necessitates optimization of associated fracture parameters to ensure its economic success.
Armin Shirbazo, Jalal Fahimpour, Babak Aminshahidy   +2 more
doaj   +1 more source