Fracture Mechanism of Plain Concrete Under Uniaxial Tension

Ueda, Mikito; Hasebe, Norio; Sato, Masatoshi; Okuda, Hiromichi

doi:10.2208/jscej.1993.466_69

Cited by 9 publications

(8 citation statements)

References 14 publications

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“…The deformation is enlarged 50 times. The propagation of single cracks that can be seen in usual experiments can be simulated (Ueda et al 1993). Figure 25 shows the average strains of every 50 mm section in the axial direction.…”

Section: Compression and Tension Testmentioning

confidence: 98%

Mesoscopic Simulation of Failure of Mortar and Concrete by 2D RBSM

Nagai

Sato

Ueda

2004

ACT

132

108

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Concrete is a heterogeneous material consisting of mortar and aggregate at the meso level. Evaluation of the fracture process at this level is useful to clarify the material characteristic of concrete. However, the analytical approach at this level has not yet been sufficiently investigated. In this study, two-dimensional analyses of mortar and concrete are carried out using the Rigid Body Spring Model (RBSM). For the simulation of concrete, constitutive model at the meso scale are developed. Analysis simulates well the failure behavior and the compressive and tensile strength relationship of mortar and concrete under uniaxial and biaxial stress conditions. Localized compressive failure of concrete is also simulated qualitatively.

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Section: Compression and Tension Testmentioning

confidence: 98%

Mesoscopic Simulation of Failure of Mortar and Concrete by 2D RBSM

Nagai

Sato

Ueda

2004

ACT

132

108

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“…Tremendous amount of studies have been conducted to investigate the behavior of concrete under axial loading. It is found that the fracture process of concrete can be characterized as strain softening and fracture toughening due to the formation and branching of micro-cracking [Li et al, 1993, Jeng and Shah, 1991, Shum and Hutchinson, 1990, Shah and Sankar, 1987, and Ueda et. al., 1994.…”

Section: Fracture Mechanisms Under Loadmentioning

confidence: 99%

“…It is reported [Li et al, 1993] however that gradual failure of an unnotched specimen can be obtained and instability near the peak load can be avoided if the opening of the crack can be controlled in a closed-loop controlled manner. Figure 2.8 Tensile Test Setup with Loading Plates Glued to a Specimen [Li et al, 1993] Macroscopic mechanical behavior under tension can be generally described by the stress-strain curve which contains three regions: elastic, non-linear range, and shift due to the formation and propagation of a macro-crack [Ueda et al, 1994]. The initiation of micro-cracking can occur at the aggregate interface that is most vulnerable as this is a region where stress tends to concentrate, or at voids caused by bleeding or insufficient compaction which exist in the concrete before loading.…”

Section: Bureau Of Reclamationmentioning

confidence: 99%

“…The initiation of micro-cracking can occur at the aggregate interface that is most vulnerable as this is a region where stress tends to concentrate, or at voids caused by bleeding or insufficient compaction which exist in the concrete before loading. Studies [Ueda et al, 1994] also reveal that micro-cracking can occur on the side of aggregate interface facing the tensile loading direction if there is insufficient adhesion. Li and Li [2000] studied the fracture process of both plain and fiber reinforced concrete using acoustic emission.…”

Section: Bureau Of Reclamationmentioning

confidence: 99%

“…Although the fracture of undamaged concretes has been studied extensively to better understand how concrete structures will respond to loading [Jenq and Shah, 1991, Li and Shah, 1994, Li and Li, 2000, and Ueda et al, 1994, much less information is available on how existing cracking influences the life cycle performance. The role of pre-existing cracks was studied in this research program to better understand how cracking can influence the performance of actual field concrete.…”

Section: Introductionmentioning

confidence: 99%

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Interaction Between Micro-Cracking, Cracking, and Reduced Durability of Concrete: Developing Methods for Quantifying the Influence of Cumulative Damage in Life-Cycle Modeling

Yang¹,

Weiss²,

Olek³

2004

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Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. Abstract .It is becoming increasingly popular to utilize numerical simulation models to predict the long-term performance of concrete pavements and structures. The majority of these models have been developed using laboratory test data that considers concrete in an uncracked state. While uncracked concrete exists as the best case scenario, frequent cracking occurs in real structures that could have a profound impact on life cycle performance. Cracks from several sources may accumulate and interact thereby accelerating the deterioration of concrete. For example, the distributed cracking caused by freeze/thaw damage can substantially increases the rate of water absorption and reduces the load carrying capacity of concrete. To accurately simulate the performance of actual concrete facilities, the role of cracking and its cumulative effect on the changes of material properties should be accounted for in these models. The main goal of this investigation was to assess the influence of cumulative damage in concrete and to quantify its influence for use in life-cycle performance modeling. Samples were taken from five concrete pavement sections based on age, traffic, and overall performance to assess existing damage and to identify possible sources responsible for inducing the damage. These results were used as a baseline to assess the types of damage that merited laboratory investigation. After the field assessment, laboratory investigations were conducted to simulate the damage that may be expected in the field. After various levels of damage were introduced in laboratory specimens, durability tests (freezing and thawing and water absorption) and direct tensile test were performed to develop an understanding of how the pre-existing damage accelerated the deterioration process. Specifically, it was determined that cracks caused by freezing and thawing dramatically increase the rate and amount of water absorption while cracks caused by mechanical loading only increased the absorption in a local region. Further, freeze-thaw damage dramatically reduces the direct tensile strength and modulus of elasticity of concrete until the aggregates begin to pull out of the matrix. This results in a larger fracture process zone in the damaged concrete than in the undamaged concrete.17.

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Effects of Vibration by Demolition on Nearby Machine Shop Floor—Wave Measurement for Dynamic Property of Ground

Iwasaki

Nakagawa

2015

Developments in Geotechnical Engineering

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Fracture Mechanism of Plain Concrete Under Uniaxial Tension

Cited by 9 publications

References 14 publications

Mesoscopic Simulation of Failure of Mortar and Concrete by 2D RBSM

Mesoscopic Simulation of Failure of Mortar and Concrete by 2D RBSM

Interaction Between Micro-Cracking, Cracking, and Reduced Durability of Concrete: Developing Methods for Quantifying the Influence of Cumulative Damage in Life-Cycle Modeling

Effects of Vibration by Demolition on Nearby Machine Shop Floor—Wave Measurement for Dynamic Property of Ground

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