تفاصيل المنتج

Numerical analysis of the early age behavior of concrete

Sep 01, 2009  Early age behavior of a massive concrete wall 3.1. Outline of the analysis For the numerical analysis presented here, a massive concrete wall with dimensions of 1.8 m length × 1.2 m height × 1.44 m thickness is considered. The shape and configuration of the structure are shown in Fig. 1.

Inquire now

Numerical analysis of the early age behavior of concrete

Sep 01, 2009  To simulate the early age behavior of concrete structures composed of young concrete, a finite element analysis (FEA) was implemented with the hydration based microplane model. Structural behaviors...

Inquire now

Numerical analysis of the early age behavior of concrete structures ...

To simulate the early age behavior of concrete structures composed of young concrete, a finite element analysis (FEA) was implemented with the hydration based microplane model. Structural behaviors were investigated with concrete age for a massive concrete wall and slab. From FEA, it was found that surface cracking at early age occurred via different crack driving

Inquire now

Numerical analysis of the early age behavior of concrete structures ...

Structural behaviors were investigated with concrete age for a massive concrete wall and slab. From FEA, it was found that surface cracking at early age occurred via different crack driving mechanisms. In the case of combined hydration heat and shrinkage, later surface cracking was produced by differential drying shrinkage.

Inquire now

Experimental and numerical analysis of early age behavior

Jun 20, 2019  An approach combining numerical simulations and experimental techniques is proposed to investigate the early-age properties of non-reinforced concrete. Both thermo-mechanical and fracture behaviors are studied, providing a

Inquire now

Experimental and numerical analysis of early age behavior

The early-age behavior of concrete is an extremely complex multi-physics problem, since the c hange of me- chanical properties is fast and largely dependent on

Inquire now

Early-Age Properties of Concrete Based on Numerical

The early-age performances of cement-based mixtures are governed by cement hydration reactions. As a matter of fact, the heat generated during the setting and hardening phases due to the hydration processes increases the temperatures within the concrete elements while it starts developing its mechanical properties.

Inquire now

Numerical Model Describing the Early Age Behavior of 3D

Jul 08, 2020  A numerical model used to predict the behavior of 3D printed concrete in the early age phase up until the point of collapse is presented. An incremental creep model for the material including aging and temperature effects is suggested. Furthermore, kinematic nonlinear effects are included in order to predict instability.

Inquire now

Experimental and numerical analysis of early age behavior in non ...

Abstract An approach combining numerical simulations and experimental techniques is proposed to investigate the early-age properties of non-reinforced concrete. Both thermo-mechanical and fracture behaviors are studied, providing a deep insight into the hydration process. This work makes an important step in understanding the effects of hydration on the performance of

Inquire now

EARLY AGE BEHAVIOR OF MASSIVE CONCRETE STRUCTURES:

The principal features of the numerical model are presented above. 3.1 Chemo-thermal model The prediction of early-age behavior required to know the evolution of the concrete hydration. This evolution can be achieved by the use of a chemical affinity [9] and considering that the reaction is thermo-activated following the Arrhenius law [10]:

Inquire now

NUMERICAL ANALYSIS OF EARLY-AGE CURLING BEHAVIOR OF CEMENT CONCRETE ...

Abstract: Based on 1/4 slab simulation program, considering the interface friction between the slab and base, a simulation program for 3D early-age curling of full-scale slab was developed and validated by field experiments. Compared with the 1/4 slab program, full-scale slab programs which consider the interface friction may reduce displacement at the corner of the slab, and

Inquire now

DSpace at KOASAS: Numerical analysis of the early age behavior

Numerical analysis of the early age behavior of concrete structures with a hydration based microplane model. Cited 28 time in Cited 0 time in . Hit : 263; Download : 2; Export. DC(XML) Excel. Lee, Y / Kim, Jin-Keun researcher. To simulate the early age behavior of concrete structures composed of young concrete, a finite element analysis (FEA ...

Inquire now

NUMERICAL ANALYSIS OF EARLY-AGE CURLING BEHAVIOR OF CEMENT CONCRETE ...

Based on 1/4 slab simulation program, considering the interface friction between the slab and base, a simulation program for 3D early-age curling of full-scale slab was developed and validated by field experiments. Compared with the 1/4 slab program, full-scale slab programs which consider the interface friction may reduce displacement at the corner of the slab, and

Inquire now

NUMERICAL ANALYSIS OF EARLY-AGE CURLING BEHAVIOR OF CEMENT CONCRETE ...

NUMERICAL ANALYSIS OF EARLY-AGE CURLING BEHAVIOR OF CEMENT CONCRETE PAVEMENT Author(s): WANG Li-juan, HU Chang-bin, ZENG Yu-xin, College of Civil Engineering, Fuzhou University Pages: 146-155 Year: 2017 Issue: 7 Journal: Engineering Mechanics Keyword: road engineering; cement concrete pavements; numerical simulation; early-age; built-in curling;

Inquire now

Experimental and numerical analysis of early age behavior in

An approach combining numerical simulations and experimental techniques is proposed to investigate the early-age properties of non-reinforced concrete. Both thermo-mechanical and fracture behaviors are studied, providing a deep insight into the hydration process.

Inquire now

(PDF) Numerical analysis of the thermal active restrained

Numerical analysis of the thermal active restrained shrinkage ring test to study the early age behavior of massive concrete structures Engineering Structures, 2011 F. Benboudjema

Inquire now

(PDF) Identification of viscoelastic behavior for early-age concrete ...

In order to accurately predict the stress of concrete structures that undergo variations of temperature and moisture, a compliance function is required that considers the fast development of material properties in early-age concrete. The purpose of

Inquire now

Finite-Element Modeling of Early-Age Concrete Behavior

Early-age stress development in concrete is influenced by temperature changes, modulus of elasticity, creep or stress relaxation, shrinkage, coefficient of thermal expansion, and the degree of restraint. In this dissertation, three -dimensional, finite element analysis was used to model the early age stress development of concrete.

Inquire now

Early-Age Behavior of Concrete Overlays on Continuously

Jan 01, 2003  Early-Age Behavior of Concrete Overlays on Continuously Reinforced Concrete Pavements Show all authors. Seong-Min Kim. Seong-Min Kim. Center for Transportation Research, The University of Texas at Austin, 3208 Red River, Suite 200, Austin, TX 78705 ... The results from the numerical analysis matched the experimental results well. Equations to ...

Inquire now

Field test and numerical simulation of the thermal insulation

A numerical model based on the thermo-hydro-mechanical (THM) coupling theory of porous medium is used to calculate the evolution processes of

Inquire now

Thermo-hygro-mechanical behavior of early-age concrete deck

Jun 15, 2011  The numerical analysis results were updated every 1 h due to the rapidly occurring variations of the strain and stress field of test members at early ages. ... This study provides a more realistic prediction of time-dependent behavior of early-age concrete decks in composite bridges. It can be also utilized to reduce the risk of cracking in ...

Inquire now

Influence of Volume-to-Surface Area Ratio on the Creep Behavior

Jul 10, 2022  To explore the influence of the volume-to-surface area ratio (V/S) on the creep of ceramsite concrete beams, the creep performance of ceramsite concrete beams with different V/S was studied through a long-term deformation observation test, theoretical derivation analysis and finite element modeling. First, by observing the creep deflection of ceramsite concrete

Inquire now

Calibration and Validation of a Numerical Model for Early Age

Numerical examples, which deal with the analysis of concrete specimens, both in adiabatic and isothermal conditions, and loaded at different ages, are presented in order to show (1) the calibration procedure of model parameters and, after that, (2) the validation of the model for early age behavior of concrete without any further change of the ...

Inquire now

ERIC - Results

ERIC is an online library of education research and information, sponsored by the Institute of Education Sciences (IES) of the U.S. Department of Education.

Inquire now

Numerical analysis of the early age behavior of concrete

Article “Numerical analysis of the early age behavior of concrete structures with a hydration based microplane model” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide

Inquire now

DSpace at KOASAS: Numerical analysis of the early age behavior

Numerical analysis of the early age behavior of concrete structures with a hydration based microplane model. Cited 28 time in Cited 0 time in . Hit : 263; Download : 2; Export. DC(XML) Excel. Lee, Y / Kim, Jin-Keun researcher. To simulate the early age behavior of concrete structures composed of young concrete, a finite element analysis (FEA ...

Inquire now

NUMERICAL ANALYSIS OF EARLY-AGE CURLING BEHAVIOR OF CEMENT CONCRETE ...

NUMERICAL ANALYSIS OF EARLY-AGE CURLING BEHAVIOR OF CEMENT CONCRETE PAVEMENT Author(s): WANG Li-juan, HU Chang-bin, ZENG Yu-xin, College of Civil Engineering, Fuzhou University Pages: 146-155 Year: 2017 Issue: 7 Journal: Engineering Mechanics Keyword: road engineering; cement concrete pavements; numerical simulation; early-age; built-in curling;

Inquire now

Numerical Model Describing the Early Age Behavior of 3D

Numerical Model Describing the Early Age Behavior of 3D Printed Concrete – work in progress Sebastian Andersen1, Wilson Ricardo Leal da Silva2, Ieva Paegle1 and Jens Henrik Nielsen1 1 Technical University of Denmark, 2800 Kgs. Lyngby, Denmark 2 Danish Technological Institute, 2630 Taastrup, Denmark [email protected] Abstract. A numerical model used to

Inquire now

Early-age behaviour of concrete nuclear containments

Numerical analysis of the thermal active restrained shrinkage ring test to study the early age behavior of massive concrete structures. By F. Benboudjema. Effects of early-age thermal behaviour on damage risks in massive concrete structures. By F. Benboudjema.

Inquire now

Numerical Analysis of Softening Relationship for Early-Age Concrete

The analysis is performed on the basis of related concrete mechanical and fracture-behavior experiments, and by the aid of common FEA software ABAQUS 6.5.Firstly, the typical 3-point bend-and-fracture experiment for early-age concrete beams is simulated and some mechanical behavior, e.g. load-crack mouth opening displacement (CMOD), are ...

Inquire now

Early age behavior of bonded concrete overlays due to

Experimental measurements and numerical analyses were performed to investigate the early age behavior of bonded concrete overlays. Drying shrinkage, relative humidity, and thermal changes inside the overlay concrete were measured to define shrinkage and thermal gradients. Tensile bond strength was measured by a modified split tensile test and used for failure

Inquire now

(PDF) Early-age behaviour of concrete nuclear containments

Numerical analysis of the thermal active restrained shrinkage ring test to study the early age behavior of massive concrete structures. ... Identification of viscoelastic behavior for early-age concrete based on measured strain and stress histories. By Seongcheol Choi. Shrinkage effects in pre-stressed concrete.

Inquire now

Experimental and Numerical Analysis of the Concrete Maturation

Jul 04, 2022  The aim of the article is to present a comparative analysis between the results of the laboratory tests and numerical simulations. The analysis contains two types of PCM (powder and in liquid), which were dosed in a hybrid system to the concrete mix. ... Porras, R.; Hafez, O.M.; Bolander, J.E. Lattice modeling of early-age behavior of ...

Inquire now

A numerical model for early age concrete behavior

Di Luzio, G, Cusatis, G Cedolin, L 2010, A numerical model for early age concrete behavior. in A numerical model for early age concrete behavior. EURO-C 2010: Computational Modeling of Concrete Structures, 3/1/10.

Inquire now

Lattice Modeling of Early-Age Behavior of Structural Concrete

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. Computational modeling offers a means for identifying primary factors and strategies for reducing cracking potential. Herein, lattice models are shown to be adept at simulating the thermal

Inquire now

Experimental and numerical analysis of early age behavior in

In the second part, the computational modeling based on the phase field method of failure mechanism is applied to simulate the thermal, mechanical and fracture behavior due to early-age hydration. A detailed discussion on the identification of model/material parameters and the construction of numerical model including the boundary conditions is ...

Inquire now

Field test and numerical simulation of the thermal insulation

A numerical model based on the thermo-hydro-mechanical (THM) coupling theory of porous medium is used to calculate the evolution processes of

Inquire now

Numerical analysis of effect of temperature history and restraint ...

May 23, 2020  This paper presents a numerical analysis of concrete restraint tests conducted on a temperature stress testing machine (TSTM). Two numerical methods, namely a 1-D method using Matlab software and 3-D method using Midas software, were adopted. ... Testing system for determining the mechanical behavior of early age concrete under restrained and ...

Inquire now

المقالات التي تهمك

اترك لنا أرسالة