Mechanical and permeability properties of the interface between normal concrete substrate and ultra high performance fiber concrete overlay

2012 ◽  
Vol 36 ◽  
pp. 538-548 ◽  
Author(s):  
Bassam A. Tayeh ◽  
B.H. Abu Bakar ◽  
M.A. Megat Johari ◽  
Yen Lei Voo
Keyword(s):  
High Performance ◽  
Normal Concrete ◽  
Fiber Concrete ◽  
High Performance Fiber

scholarly journals Evaluation of bond strength between normal concrete and high performance fiber reinforced concrete (HPFRC)

2018 ◽  
Vol 195 ◽  
pp. 01015
Author(s):  
Nur Adibah Ayuni Abd Malek ◽  
Khairunnisa Muhamad ◽  
Mohd Zulham Affandi Mohd Zahid ◽  
Nur Ain Hamiruddin ◽  
Norrazman Zaiha Zainol ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Bond Strength ◽  
High Performance ◽  
Surface Preparation ◽  
Fiber Reinforced Concrete ◽  
Repair Material ◽  
Normal Concrete ◽  
High Performance Fiber ◽  
Water Curing ◽  
Curing Method

High Performance Fiber Reinforced Concrete (HPFRC) has been proposed to be used as a repair material for the deterioration of concrete structure since its very low porosity that leads to a low permeability and high durability. This characteristic makes it suitable for rehabilitation and retrofitting reinforced concrete structures or for as a new repair material. The bond strength between HPFRC and old concrete should have a good bond strength, thus surface preparation method and curing method can help strengthen the bond strength between HPFRC and normal concrete. This paper was performed to study the effect of surface preparation and curing method on the bond strength between HPFRC and normal concrete. In this study, three surface preparations were prepared: sandblasting, grooved and drill hole. Then, the curing methods that were performed in this study are ambient curing and water curing. The tests that were conducted to evaluate the bond strength between HPFRC and normal concrete are slant shear test and splitting tensile test. The result from this study shows that sandblasting gave the highest bond strength result between normal concrete and HPFRC. For the curing method, water curing gives the highest bond strength between normal concrete and HPFRC.

UHPFRC as Repair Material for Fire-Damaged Reinforced Concrete Structure – A Review

2015 ◽  
Vol 802 ◽  
pp. 283-289 ◽  
Author(s):  
Muhd Afiq Hizami Abdullah ◽  
Mohd Zulham Affandi Mohd Zahid ◽  
Badorul Hisham Abu Bakar ◽  
Fadzli Mohamed Nazri ◽  
Afizah Ayob
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
High Performance ◽  
Steel Fibre ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Repair Material ◽  
Reinforced Concrete Structure ◽  
Normal Concrete ◽  
High Performance Fiber

Exposure of concrete to intense heat will cause deterioration of its strength and durability. Previously, the fire-damaged concrete was repaired using the shotcrete and normal concrete. Recent studies utilize fibre reinforced polymer (FRP) in repairing fire-damaged concrete. Ultra High Performance Fiber Reinforced Concrete (UHPFRC) mostly developed using fine size aggregate, cement, silica fume, super plasticizer and reinforced with steel fibre has an excellent mechanical properties compared to high strength concrete and with an addition of steel fibre in the UHPFRC enhances its ductility behaviour which is not possessed by normal concrete, hence, UHPFRC indicates a promising candidate as repair material to fire-damaged concrete. The aim of this paper is to review on the properties of UHPFRC to be utilized as repair material to fire-damaged concrete structure based on previous research on UHPFRC and fire-damaged structure.

scholarly journals Self‐compacting high performance fiber concrete for foundations: Part 2—Fiber orientation and distribution

2022 ◽  
Author(s):  
Steffen Grünewald ◽  
Bogdan Cotovanu ◽  
John Rovers ◽  
Joost C. Walraven ◽  
Luc Taerwe
Keyword(s):  
Fiber Orientation ◽  
High Performance ◽  
Fiber Concrete ◽  
High Performance Fiber
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