Existing concrete textures: their effect on adhesion with fibre concrete overlay

2014 ◽  
Vol 167 (6) ◽  
pp. 355-368 ◽  
Author(s):  
Bassam A. Tayeh ◽  
Badorul H. Abu Bakar ◽  
Megat A. Megat Johari ◽  
Mani M. Ratnam
Keyword(s):  
Fibre Concrete

scholarly journals EFFECT OF SHORT FIBERS ORIENTATION ON MECHANICAL PROPERTIES OF COMPOSITE MATERIAL – FIBER REINFORCED CONCRETE

2017 ◽  
Vol 23 (8) ◽  
pp. 1091-1099 ◽  
Author(s):  
Vitalijs LUSIS ◽  
Andrejs KRASNIKOVS ◽  
Olga KONONOVA ◽  
Videvuds-Arijs LAPSA ◽  
Rimvydas STONYS ◽  
...  
Keyword(s):  
Fiber Reinforced Concrete ◽  
Fracture Mechanisms ◽  
Short Fibers ◽  
Structural Element ◽  
Fibre Concentration ◽  
Four Point Bending ◽  
Fibre Concrete ◽  
Simulation Results ◽  
Fibers Orientation ◽  
Short Steel Fibres

Traditional fiberconcrete structures have fibres in the mix oriented in all spatial directions, distributed in the struc­tural element volume homogenously, what not easy to obtain in practice. In many situations, structurally more effective is the insertion of fibres into the concrete structural element body by forming layers, with a predetermined fibre concentration and orientation in every layer. In the present investigation, layered fibre concrete is under investigation. Short steel fibres were at­tached to flexible warps with the necessary fibres concentration and orientation. Warps were placed into the prismatic mould separating them by concrete layers without fibres. Prisms were matured and tested under four-point bending. The bending-affected mechanical behaviour of cracked fibre concrete was simulated numerically by using a developed struc­tural model. Comparing the simulation results with experimental data, material micromechanical fracture mechanisms were analysed and evaluated.

scholarly journals PROPERTIES OF FRESH POLYPROPYLENE FIBRE REINFORCED CONCRETE UNDER THE INFLUENCE OF POZZOLANS

2003 ◽  
Vol 9 (4) ◽  
pp. 271-279 ◽  
Author(s):  
Hau-yan Leung ◽  
Ramapillai V. Balendran
Keyword(s):  
Reinforced Concrete ◽  
Fly Ash ◽  
Silica Fume ◽  
Setting Time ◽  
Polypropylene Fibre ◽  
Partial Replacement ◽  
Fibre Reinforced Concrete ◽  
Polypropylene Fibres ◽  
Fibre Concrete ◽  
Time Substitution

This paper summarises experimental results of some fresh concrete tests. Polypropylene fibres were added to the concrete mix to produce fibre reinforced concrete. Pozzolanic materials, including pulverised fly ash and silica fume, were used as partial replacement of cement, and their effects on the fresh fibre concrete were reported. Test results showed that the polypropylene fibre reduced the concrete workability significantly by thixotropic effect and decreased the setting time. Substitution of pozzolans also greatly affected the properties. The presence of fly ash increased the workability and setting time but in the presence of silica fume a reverse trend was observed. Empirical equations were proposed.

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