Results 21 to 30 of about 76,634 (311)

Short-Term Gradation Loading Creep Properties and Failure Characteristics of High-Strength Fly Ash Concrete for Underground Engineering

open access: yesAdvances in Civil Engineering, 2020
In order to study the short-term creep deformation of high-strength concrete with varying fly ash replacement ratios, concrete samples with 0, 20, 35, and 50 wt% fly ash were tested using an electrohydraulic servocontrolled creep testing system and ...
Bing Li   +6 more
doaj   +1 more source

A review on concrete creep characteristics and its evaluation on high-strength lightweight concrete

open access: yesJournal of Materials Research and Technology, 2023
This study conducted a comprehensive investigation into concrete creep. First, the creep mechanisms and parameters of high-strength lightweight concrete (HSLC) were introduced.
Se-Hee Hong   +3 more
doaj   +1 more source

Lifetime evaluation of concrete structures under sustained post-peak loading [PDF]

open access: yes, 2005
Experimental tests on crack propagation in concrete under constant post-peak loading are simulated using the finite element method and the cohesive crack model, in both Mode I and Mixed-mode conditions.
Barpi, Fabrizio, Valente, Silvio
core   +2 more sources

Creep and shrinkage of ecological self consolidating concrete [PDF]

open access: yes, 2015
Optimizing concrete mixtures with regard to replace a part of cement content with supplementary cementitious materials can prompt the design of ecological-self consolidating concrete.
Alghazali, Hayder H., Myers, John J.
core   +1 more source

Lattice Modeling of Early-Age Behavior of Structural Concrete. [PDF]

open access: yes, 2017
The susceptibility of structural concrete to early-age cracking depends on material composition, methods of processing, structural boundary conditions, and a variety of environmental factors.
Bolander, John E   +4 more
core   +3 more sources

Study on Mechanical Properties of Simply-Supported Composite Beams Considering Creep and Slip

open access: yesApplied Sciences, 2022
In the current industry, steel–concrete composite beams are used in large-span bridges and super-high-rise building structures due to their excellent overall performance.
Qinan Lei, Peng Wang, Hongliang Nan
doaj   +1 more source

Efficient single-step time-dependent analysis of PC structures [PDF]

open access: yes, 2012
This paper describes an efficient single-step method to predict the time-dependent behaviour of prestressed concrete (PC) structures due to concrete creep, concrete shrinkage and cable relaxation.
Au, FTK, Si, X, Tsang, NCM
core   +1 more source

A memory-dependent three-dimensional creep model for concrete

open access: yesCase Studies in Construction Materials
The study of creep models for concrete is of great significance in analyzing and predicting the long-term stability of concrete structures. Based on the theory of memory-dependent derivatives, memory-dependent viscous dashpots that can describe the ...
Deng Zhang   +4 more
doaj   +1 more source

Nonlinear Creep Behavior and Viscoelastic-Plastic Constitutive Model of Rock-Concrete Composite Mass

open access: yesAdvances in Civil Engineering, 2020
The joint force deformation of rock-concrete composite structures is different from that of simple rock specimens or concrete specimens, such as the tunnel surrounding rock-lining concrete, dam foundations, and concrete.
Yang Liu   +4 more
doaj   +1 more source

Thermoviscoelastic Analysis of Concrete Creep at Mesoscale [PDF]

open access: yesKey Engineering Materials, 2016
Concrete is a heterogeneous material made up at mesoscale of linear elastic aggregates distributed in a mortar matrix whose behavior is time and temperature dependent. The Interfacial Transition Zone (ITZ) between aggregates and matrix also influences the overall behavior.
Bary, B., Bourcier, C., Helfer, T.
openaire   +2 more sources

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