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- 저자 : Frederic Duprat (검색결과 1 건)
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A Study on the Reinforced Fibrous Concrete Elements Subjected to Uniaxial Tensile Loading
Rashid Hameed,Anaclet Turatsinze,Frederic Duprat,Alain Sellier 대한토목학회 2010 KSCE JOURNAL OF CIVIL ENGINEERING Vol.14 No.4
The structural response of prisms of cross section 100×100 mm and length of 500 mm constructed with reinforced fibrous concrete and subjected to pure tensile loading has been presented in this contribution. The main focus was to study the effects of adding different metallic fibers in mono and hybrid form in the conventionally reinforced concrete on the tension stiffening and strain development. Two metallic fibers with different geometrical, mechanical and physical properties were investigated: amorphous metallic straight fibers and carbon steel hooked-end fibers. A total of four concrete mixtures: control, single fiber and hybrid fiber reinforced concretes were prepared. The fibers were investigated at content of 20 kg/m3 for single fiber reinforced concretes, and for hybrid fiber reinforced concrete, at content of 40 kg/m3. Through studying load-deformation response of composites and strain development in steel bar and concrete, it has been found that the metallic fibers improve tension stiffening effect and influence significantly the strain development. The effect of two metallic fibers on tension stiffening was seen to be different at different loading stages. On the other hand, when fibers were used in hybrid form, the behaviour of the composite was improved at all loading stages in terms of tension stiffening and resistance to cracking.
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