Biaxial compressive strength of concrete under high
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Biaxial compressive strength of concrete under high.

Biaxial compressive strength of concrete under high ...

Mar 21, 2018  The effect of an impact load on the uniaxial and biaxial compressive strength of a concrete type C20/25 was extensively investigated in various series of tests. The static reference tests were carried out in hydraulic testing machines with a strain rate of about 3∙10 -5 1/s.

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Concrete under biaxial dynamic compressive loading ...

Jan 01, 2017  A concrete type C20/25 was examined under biaxial dynamic compressive loading with several stress ratios and two different loading rates (75 and 150 1/s). The question to be answered is, if the two strength enhancing effects of biaxial compressive loading and elevated strain rate overlay under this combined loading condition.

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Experimental study on mechanical behavior of high-strength ...

Oct 20, 2020  Failure mode and constitutive model of plain high-strength high-performance concrete under biaxial compression after exposure to high temperatures Acta Mech Solida Sin ,

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Behavior of High-Strength Concrete under Biaxial Stresses

Jan 01, 2000  High-strength lightweight concrete indicated higher strength gain under biaxial load at all stress ratios compared to normal and high-stength concrete. The deformation characteristics indicated that high-strength concrete shows a linear behavior up to a higher stress than normal strength concrete. It also has higher discontinuity limits.

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Biaxial creep of high-strength concrete at early ages ...

Nov 01, 2019  However, the creep under the biaxial tensile-compressive stress condition is only about 54–63% (41–75%) of that under the uniaxial tensile (compressive) stress condition, suggesting that stress condition is a key factor that affects the creep property of high-strength concrete at early ages.

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High-Performance Concrete under Biaxial and Triaxial Loads ...

Nov 11, 2009  This paper presents results of multiaxial strength tests on various high-performance concretes (HPCs) with uniaxial compressive strength from 58 to 94 MPa.A large number of stress ratios of biaxial compression-tension, compression-compression, and triaxial compression

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Concrete under biaxial dynamic compressive loading ...

Jan 01, 2017  A concrete type C20/25 was examined under biaxial dynamic compressive loading with several stress ratios and two different loading rates (75 and 150 1/s). The question to be answered is, if the two strength enhancing effects of biaxial compressive loading and elevated strain rate overlay under this combined loading condition.

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Behavior of High-Strength Concrete under Biaxial Stresses

Jan 01, 2000  High-strength lightweight concrete indicated higher strength gain under biaxial load at all stress ratios compared to normal and high-stength concrete. The deformation characteristics indicated that high-strength concrete shows a linear behavior up to a higher stress than normal strength concrete. It also has higher discontinuity limits.

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The Biaxial Compressive Mechanical Properties and Strength ...

Oct 26, 2020  The strength of ordinary concrete under biaxial compression can raise to about 1.35 times (Yan and Lin 2006), while the strength of RAC under biaxial compression can be improved to about 1.93 times. In all strain rates, the biaxial stress ratios corresponding to the maximum of σ 3f are 0.25–0.75, mostly appearing at 0.25 or 0.75.

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BEHAVIOR OF HIGH STRENGTH REINFORCED CONCRETE

aggregates of maximum size 20mm were used. High yield strength deformed (HYSD) bars of 12mm and 8 mm diameter were used as the longitudinal reinforcement. After 28 days curing specimen were tested in UTM to determining the compressive strength, split tension strength. The column was tested under biaxial

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Experimental study on mechanical behavior of high-strength ...

The biaxial test data of three different high-strength high performance concrete were obtained and compared. • Combined effects of stress ratio and uniaxial strength on properties of HSHPCs were investigated. • A novel biaxial failure criterion of HSHPC covering the whole range of biaxial stress combination is established.

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Experimental and FEA analysis of high-performance concrete ...

Jan 01, 2021  The compressive strength of the concrete used in columns is from 60 MPa and 80 MPa. After successfully casting of long columns using high performance concrete with 60 MPa and 80 MPa is cured for 28 days. For HPC, the average compressive strength achieved is 67 MPa and 86 MPa for 60 MPa and 80 MPa grades respectively.

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Mechanical properties and acoustic emission data analyses ...

The experiment showed that the biaxial compressive strength of concrete is 1.27 times the uniaxial compressive strength. Tasuji et al. studied the stress–strain relationship and failure characteristics of concrete under biaxial stress. The result showed that when the stress ratio is 0.5, the ultimate strength of concrete under biaxial ...

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Concrete Under Multiaxial Loads

The strength of concrete in biaxial tension is generally of the order of 1/8 of the uniaxial compressive strength (f c). Figure 2. Biaxial stress interaction diagram. Triaxial loading Triaxial compressive loading of concrete causes a drastic increase in the strength of concrete. The tensile strains generated are overcome by the compressive ...

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Behaviour of plain and steel-fibre-reinforced high ...

The maximum increase of ultimate strength occurred at a biaxial stress ratio of 05 (σ 2 /σ 1 = 05) in the plain high-strength concrete and the value recorded was 30% over the strength under the uniaxial condition. The failure modes of plain high-strength concrete under uniaxial compression were shown as splitting type but steel fibre ...

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Compressive strength and hightemperature residual strength ...

Compressive strength and hightemperature residual strength of cement specimens containing bagasse ash ... Specimens with greater compactness were shown to retain more of their compressive strength following exposure to high temperatures. ... STUDY OF STRENGTH AND DEFORMATION OF AIR ENTRAINED CONCRETE UNDER BIAXIAL COMPRESSION AFTER FREEZING AND ...

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Multiscale Model Important!!!!!!!!! Concrete Materials

The The model assumes typical that the curve stress–stain uniaxial compressive is shown in Figureand tensile 15 and responses ofrelationships the stress–strain concrete are characterized under compression by damaged and tensionplasticity. are The typical stress–stain curve is shown in Figure 15 and the stress–strain relationships under ...

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检索结果-保定学院图书馆 - lib.bdu.cn

保定学院图书馆. 首页; 资源. 数据库导航; 期刊导航; 文献资源导航; 新书通报; 服务

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High-Performance Concrete under Biaxial and Triaxial Loads ...

Nov 11, 2009  This paper presents results of multiaxial strength tests on various high-performance concretes (HPCs) with uniaxial compressive strength from 58 to 94 MPa.A large number of stress ratios of biaxial compression-tension, compression-compression, and triaxial compression

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BEHAVIOR OF HIGH-STRENGTH CONCRETE UNDER BIAXIAL

Four different types of high-strength concrete (HSC) plate specimens (150 mm-by-150 mm-by-40 mm) were tested under different biaxial load combinations. The specimens were subjected to biaxial combinations that cover the three regions of compression-compression, compression

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Strength of Concrete Under Biaxial Compression

Title: Strength of Concrete Under Biaxial Compression Author(s): K. T. Sundara Raja lyengar, K. Chandrashekhara, and K. T. Krishnaswamy Publication: Journal Proceedings Volume: 62 Issue: 2 Appears on pages(s): 239-250 Keywords: biaxial compression, compressive strength, cement mortar, concrete, failure, research. Date: 2/1/1965 Abstract: A criterion for failure of concrete under

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Effects of Biaxial Loading on the High Temperature ...

Fig. 3 Biaxial high temperature compressive strength of gravel concrete related to the uniaxial strength at room temperature related to the uniaxial compressive strength at ambient temperature B. at the time of testing. For each particular temperature, the strengths were connected with a failure envelope in the plane of principal stresses.

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Behaviour of high-strength concrete under biaxial loading ...

With the increasing applications of high strength concrete in the construction industry, the understanding of its behaviour under multiaxial loading is essential for reliable analysis and safe design. This thesis encompasses an investigation of the behaviour of high strength concrete under biaxial loading conditions, and a constitutive modelling study to enable numerical prediction, through ...

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BEHAVIOR OF HIGH STRENGTH REINFORCED CONCRETE

aggregates of maximum size 20mm were used. High yield strength deformed (HYSD) bars of 12mm and 8 mm diameter were used as the longitudinal reinforcement. After 28 days curing specimen were tested in UTM to determining the compressive strength, split tension strength. The column was tested under biaxial

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Biaxial tension–compression strength behaviour of UHPFRC ...

Aug 10, 2016  Ultra-high-performance fibre-reinforced concrete (UHPFRC) panel-shaped elements subjected to compression–tension loading are tested to investigate their in-plane structural behaviour under biaxial stress. Tension-stiffening and compression-softening ultra-high-performance concrete (UHPC) behaviours are analysed with and without fibre, based on the test results from 30 specimens

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Behavior of Slender Reinforced High Performance Concrete ...

In this work high strength concrete columns subjected to compression and biaxial bending forces were studied. Authors have tested 56 pinned columns of rectangular cross-section (200 ×100 mm) of reinforced concrete of 1, 2 and 3 m length.

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Compressive strength and hightemperature residual strength ...

Compressive strength and hightemperature residual strength of cement specimens containing bagasse ash ... Specimens with greater compactness were shown to retain more of their compressive strength following exposure to high temperatures. ... STUDY OF STRENGTH AND DEFORMATION OF AIR ENTRAINED CONCRETE UNDER BIAXIAL COMPRESSION AFTER FREEZING AND ...

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Experimental Analysis and Failure Criterion of Plain ...

By using a rock true triaxial apparatus hydraulic servo machine, biaxial loading experiments including biaxial compression-compression and biaxial compression-tension with fixed lateral loading on plain concretes were conducted and the stress-strain curves of plain concrete under various stress ratios were obtained. After determining the peak principal stress, the damage modes of plain ...

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BEHAVIOR AND FAILURE OF HIGH-STRENGTH CONCRETE

The data were evaluated by regression analysis to develop a biaxial compression envelope. The failure envelope represents the predicted fatigue life of high-strength concrete as a function of the applied stress ratio. The observed failure mode for high-strength concrete under biaxial cyclic loading is also described. Availability:

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Fire spalling sensitivity of high-performance concrete in ...

Jan 25, 2019  The article Fire spalling sensitivity of high-performance concrete in heated slabs under biaxial compressive loading , written by Francesco Lo Monte, Roberto Felicetti, Chiara Rossino , was originally published electronically on the publisher s Internet portal (currently SpringerLink) on 25 January 2019 without open access.

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Experimental characterisation of mechanical behaviour of ...

The dynamic compressive strength under biaxial (σBC d) and triaxial (σTC d) static pre-stresses are around 2 and 3 times higher than σUC s, respectively. The values of σBC d are substantially sensitive to the pre-stresses (σ1 and σ2) and increase with the increase of σ2.

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Experimental Study on Chloride Ion Diffusion in Concrete ...

In addition, the sustained compressive stress has a significant effect on chloride ion diffusion of concrete with high water/cement ratio. Then, the chloride diffusion coefficient model under uniaxial and biaxial sustained compressive stress is established based on

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