Experimental investigation on mechanical, durable and stress–strain behaviour of hybrid reinforced concrete admixed BC soil: a novel use of waste fibers to reduce disposal challenges

External passive confinement has been used as strengthening scheme to rehabilitate existing reinforced concrete buildings. Passive confinement requires a certain lateral dilation of concrete prior to the activation of the confining effect. Applying pre-tensioned force to the confining material can eliminate the needs of such lateral dilation. This paper presents a review on previous studies conducted about pre-tensioned level in confined concrete. A short discussion is done based on the effect of pre-tensioned level to the three regions of stress-strain curve. It was found that pre-tensioned level affects the stress-strain behaviour of confined concrete. Pre-tensioned level that is too high decreases the strain capacity of the confined concrete. This review suggests that there exists an optimum pre-tensioned level for each confining material.

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Mechanical Properties and Stress-Strain Behaviour of Hybrid Fibre-Reinforced Self-Compacting Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.984-985.677 ◽

2014 ◽

Vol 984-985 ◽

pp. 677-683

Author(s):

T. Meena ◽

G. Elangovan ◽

R. Ganesh

Keyword(s):

Mechanical Properties ◽

Reinforced Concrete ◽

Fly Ash ◽

Fibre Reinforced Concrete ◽

Self Compacting Concrete ◽

Stress Strain ◽

Volume Fractions ◽

Strain Behaviour ◽

Hybrid Fibre ◽

Hardened State

Self-Compacting Concrete (SCC) is a highly flowable, self-levelling concrete. Just as in Fibre Reinforced Concrete (FRC), fibres can be incorporated into SCC also to get FRSCC. In the present study hybrid fibres namely, Polypropylene and hooked ended Steel fibres are incorporated in different volume fractions and their fresh and hardened state properties have been studied. Fly ash and Silica Fume obtained as waste from industries are used as replacement for cement, the replacement being 10% and 5% respectively. The behaviour of HFRSCC under compression, tension and flexure has been experimentally observed. The stress-strain behaviour of SCC and HFRSCC have also been studied by varying the combinations of volume fractions of hybrid fibres.

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Simulation of the Stress-Strain State of Eccentrically Compressed and Tensioned Reinforced Concrete Beams

System Safety Human - Technical Facility - Environment ◽

10.2478/czoto-2020-0025 ◽

2020 ◽

Vol 2 (1) ◽

pp. 207-214

Author(s):

Vasyl Karpiuk ◽

Yuliia Somina ◽

Oksana Maistrenko ◽

Fedir Karpiuk

Keyword(s):

Reinforced Concrete ◽

Cross Sections ◽

Strain State ◽

Concrete Beams ◽

Reinforced Concrete Beams ◽

Improved Method ◽

Stress Strain ◽

Stress Strain State ◽

Strain Behaviour ◽

Concrete Elements

AbstractThe paper deals with the working peculiarities of the support zones of reinforced concrete elements subject to bending with due account of the eccentric compression and tension. The authors performed simulation of the stress-strain behaviour of the indicated structures with the aid of “Lira” software which results are shown in the graphical and tabulated form. The performed simulation allowed of tracing the work of the studied sample beams till collapse. Such approach made it possible to single out and generalize the main collapse patterns of the inclined cross-sections of the reinforced concrete elements subject to bending on which basis the authors developed the improved method to calculate their strength (Karpiuk et al., 2019).

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Stress path effects on the strength behaviour of a layered soil

Canadian Geotechnical Journal ◽

10.1139/t80-067 ◽

1980 ◽

Vol 17 (4) ◽

pp. 603-607 ◽

Cited By ~ 2

Author(s):

M. Krishna Murthy ◽

T. S. Nagaraj ◽

A. Sridharan

Keyword(s):

Experimental Investigation ◽

Effective Stress ◽

Volume Change ◽

Stress Path ◽

Layered Soil ◽

Shear Behaviour ◽

Compression Tests ◽

Stress Strain ◽

Strain Behaviour ◽

Stress Parameters

An experimental investigation dealing with the influence of stress path on the shear behaviour of a layered soil prepared in the laboratory is described. Specimens trimmed in vertical and horizontal directions have been sheared under three different stress paths in compression and extension tests. Either in compression or extension, the stress–strain behaviour of the specimens with both orientations was apparently the same, although the volume change behaviour was different. The effective stress parameters C′ and [Formula: see text]′ were found to be unique and independent of the stress path and two principal orientations. However, the values of [Formula: see text]′ in extension tests were 6–7° higher than those in compression tests.

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