Experimental study on the effect of sustained axial compression load at early age on the tensile strength of concrete during late splitting

18 specimens of cold-formed steel three limbs built-up section members are tested under axial compression load in this paper. The section forms are divided into two categories: A and B. Load-displacement (P-Δ) curves and failure characteristics of specimens are obtained. The results show that: As to section A members, the failure characteristics of LC, MC and SC series of specimens are flexural-torsional buckling, torsional buckling and distortional buckling, local buckling and distortional buckling. As to section B members, the failure characteristics of LC, MC series of specimens are flexural buckling, while local buckling and distortional buckling for members of SC series.

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Experimental study on the effect of sustained axial tension load at early age on the tensile strength of concrete during late splitting

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/474/7/072041 ◽

2020 ◽

Vol 474 ◽

pp. 072041

Author(s):

Jinping Zhuang ◽

Jianxing Chen ◽

Xuefeng Cai ◽

Hao Qiu

Keyword(s):

Experimental Study ◽

Tensile Strength ◽

Early Age ◽

Axial Tension ◽

Tension Load

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Experimental Study on Self-Compacting Ferrocrete Slab under Axial Compression Load

Materials Today Proceedings ◽

10.1016/j.matpr.2018.12.040 ◽

2019 ◽

Vol 11 ◽

pp. 1066-1072

Author(s):

A.G. Tanawade ◽

C.D. Modhera

Keyword(s):

Experimental Study ◽

Axial Compression ◽

Compression Load

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Experimental Study of Concrete Early Creep Determination by Using Lying-Tensile Creep Device

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.446-449.542 ◽

2012 ◽

Vol 446-449 ◽

pp. 542-545

Author(s):

Hong Wei Liu ◽

Long Ma

Keyword(s):

Experimental Study ◽

Tensile Strength ◽

Elastic Modulus ◽

Ultimate Tensile Strength ◽

Tensile Creep ◽

Early Age ◽

Concrete Creep ◽

Bearing Strength ◽

Tensile Elastic Modulus

Lying-tensile concrete creep device was designed, and the device was used at the early age of concrete in measuring the tensile elastic modulus, creep and tensile strength. Meanwhile, the using of the device to determine the parameters has been authenticated. Tests show that the usage of the device not only can determine the early age of concrete creep, elastic modulus, but also can maintain constant loads without stabilized device.Study shows that under the same conditions, the ultimate tensile strength of the concrete which were measured creep should be lower than than that of non-creep of concrete . The earlier the loaded age, the greater decreased of ultimate tensile strength, it indicats that the creep of concrete has a certain weakening effect on concrete bearing strength.

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