Results 51 to 60 of about 126,673 (254)

Effect of compressive creep in load transfer components on relaxation behavior of FRP cable extrusion anchorages

open access: yesCase Studies in Construction Materials
This study investigates 1000-hour and million-hour creep behaviors in load transfer components (LTCs) and evaluates the impact of LTC’s compression creep on fiber-reinforced polymer (FRP) cable extrusion-anchorage relaxation.
Jingyang Zhou   +6 more
doaj   +1 more source

Eruption age of the Sverrefjellet volcano, Spitsbergen Island, Norway [PDF]

open access: yesPolar Research, 2012
Sverrefjellet is a Pleistocene-age basaltic volcanic construct on north-western Spitsbergen Island (Svalbard Archipelago, Norway). Published ages for the Sverrefjellet eruption range between 6000 years and ca. 1 million years before present.
Allan H. Treiman
doaj   +1 more source

Review and prospects of shear test of bolted rock joints

open access: yesDeep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren   +4 more
wiley   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

open access: yesDeep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang   +6 more
wiley   +1 more source

Study of some Physical properties of basalt – clay mixes [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
Jordanian basalt was added to China clay on different mixes up to 60% by weight. Some of physical properties were studied. Mixes basalt showed a remarkable increase in density with increasing basalt addition.
Adil N . Ayyash
doaj   +1 more source

Experimental studies of the resultant contact forces in drillbit-rock interaction [PDF]

open access: yes, 2014
Peer ...
Ajibose, Olusegun Kolawole   +2 more
core   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang   +6 more
wiley   +1 more source

Mechanical Behaviour of Vacuum‐Infused GFRP Composites at Elevated Temperatures—Influence of Fibre Architecture

open access: yesFire and Materials, EarlyView.
ABSTRACT This study addresses the influence of fibre architecture on the mechanical properties of vacuum‐infused glass fibre reinforced polymer (GFRP) composites at elevated temperatures (ET). Laminates with three different fibre configurations—unidirectional (UD), bidirectional 0°/90° cross‐ply (BD), and ±45° off‐axis angle‐ply (OA) – were tested in ...
Eloísa Castilho   +4 more
wiley   +1 more source

A Reproducible SEM Surface Imaging Protocol for Monitoring Microstructural Changes During Gas–Rock Interactions

open access: yesGreenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Reliable characterization of mineralogical and textural changes in rock samples is essential for understanding fluid–rock interactions, particularly in experimental studies simulating subsurface conditions. This study presents a reproducible protocol for scanning electron microscopy (SEM) analysis of rock surfaces before and after exposure to ...
Berta Ordóñez‐Casado   +3 more
wiley   +1 more source

Ultrasonic strength evaluation of underwater heterogeneous concrete using random forest model constrained by physical laws

open access: yesCase Studies in Construction Materials
Compressive strength evaluation of concrete is crucial for the safety of underwater structures. However, the concrete heterogeneity impedes accurate evaluation based on empirical formulas (EF) derived from linear regression.
Yunfei Zou, Zijian Wang, Zhishen Wu
doaj   +1 more source

Home - About - Disclaimer - Privacy