STRESS-STRAIN BEHAVIOR OF M100 GRADE HIGH STRENGTH HYBRID FIBRE SELF COMPACTING CONCRETE USING QUARTZ MATERIALS

2016 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
KUMAR B. NARENDRA ◽  
RAMUJEE KOLLI ◽  
◽  
Keyword(s):  
High Strength ◽  
Self Compacting Concrete ◽  
Stress Strain ◽  
Strain Behavior ◽  
Hybrid Fibre

Predictive Stress-Strain Models for High Strength Concrete Subjected to Uniaxial Compression

2014 ◽  
Vol 567 ◽  
pp. 476-481
Author(s):  
Nasir Shafiq ◽  
Tehmina Ayub ◽  
Muhd Fadhil Nuruddin
Keyword(s):  
Predictive Models ◽  
High Strength Concrete ◽  
Cement Content ◽  
Strain Curve ◽  
High Strength ◽  
Stress Strain Curve ◽  
Stress Strain ◽  
Strength Concrete ◽  
Strain Behavior ◽  
Four Cylinders

To date, various predictive models for high strength concrete (HSC) have been proposed that are capable of generating complete stress-strain curves. These models were validated for HSC prepared with and without silica fume. In this paper, an investigation on these predictive models has been presented by applying them on two different series of HSC. The first series of HSC was prepared by utilizing 100% cement content, while second series was prepared by utilizing 90% cement and 10% Metakaolin. The compressive strength of the concrete was ranged from 71-87 MPa. For each series of HSC, total four cylinders of the size 100×200mm were cast to obtain the stress-strain curves at 28 days.It has been found that the pattern of the stress-strain curve of each cylinder among four cylinders of each series was different from other, in spite of preparing from the similar batch. When predictive models were applied to these cylinders using their test data then it was found that all models more or less deficient to accurately predict the stress-strain behavior.

scholarly journals PENGARUH PERBEDAAN BENTUK PENAMPANG SPESIMEN TERHADAP HUBUNGAN TEGANGAN DAN REGANGAN PADA BETON HIGH VOLUME FLY ASH SELF COMPACTING CONCRETE (HVFA-SCC) The Effect of Speciment Shape on Stress-Strain Behavior of High Volume Fly ash - Self Compacting Conc

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Retno Kusuma Astuti ◽  
Agus Setya Budi ◽  
Senot Sangadji
Keyword(s):  
Fly Ash ◽  
High Volume ◽  
Self Compacting Concrete ◽  
Stress Strain ◽  
Strain Behavior ◽  
High Volume Fly Ash

<p>Penggunaan <em>fly ash </em>sebagai pengganti sebagian semen dalam campuran <em>Self Compacting Concrete </em>dengan kadar lebih dari 50% disebut <em>High Volume Fly Ash Self Compacting Concrete </em>(HVFA SCC). Pengujian beton dilakukan dengan berbagai bentuk sampel sesuai dengan standar yang digunakan. Salah satu factor yang mempengaruhi hasil pengujian adalah bentuk penampang beton. Penelitian ini menggunakan total benda uji 18 buah dengan variasi bentuk penampang lingkaran, segiempat dan segienam. Rancang campur yang digunakan pada <em>High Volume Fly Ash Self Compacting Concrete</em> menggunakan teknologi SCC berdasar EFNARC S<em>pecification and Guidelines for Self-Compacting Concrete</em>, 2002. Hasil dari penelitian ini menunjukkan bahwa HVFA SCC pada umur 28 hari memiliki kuat desak yang lebih rendah dibandingkan dengan beton normal dengan rata-rata penurunan kekuatannya adalah 27%. Beton normal dengan penampang segiempat memiliki kuat desak terendah dengan kenaikan sebesar 23% untuk segienam dan 41% untuk lingkaran, begitu pula dengan HVFA-SCC, penampang segiempat memiliki kuat desak terendah dengan kenaikan sebesar 43% untuk segienam dan 52% untuk lingkaran. Nilai Modulus Elastisitas rata-rata pada HVFA-SCC lebih kecil dibandingkan beton normal, yaitu 9578,47 MPa untuk HVFA-SCC dan 13774,44 MPa untuk beton normal. . Nilai <em>toughness postcapeak </em>rata-rata dari HVFA-SCC lebih besar dibandingkan nilai <em>toughness postcapeak </em> beton normal, yaitu 0,036 untuk HVFA-SCC dan 0,033 untuk beton normal. Begitupula dengan nilai daktilitas, yaitu 6,93 untuk HVFA-SCC dan 5,44 untuk beton normal.</p>

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

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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