Strength development of high-strength ductile concrete incorporating Metakaolin and PVA fibers.
The mechanical properties of high-strength ductile concrete (HSDC) have been investigated using Metakaolin (MK) as the cement replacing material and PVA fibers. Total twenty-seven (27) mixes of concrete have been examined with varying content of MK and PVA fibers. It has been found that the coarser type PVA fibers provide strengths competitive to control or higher than control. Concrete with coarser type PVA fibers has also refined microstructure, but the microstructure has been undergone with the increase in aspect ratio of fibers. The microstructure of concrete with MK has also more refined and packing of material is much better with MK. PVA fibers not only give higher stiffness but also showed the deflection hardening response. Toughness Index of HSDC reflects the improvement in flexural toughness over the plain concrete and the maximum toughness indices have been observed with 10% MK and 2% volume fraction of PVA fibers.
Civil Engineering Department, Universiti Teknologi PETRONAS, Block 13, Level III, 31750 Tronoh, Perak, Malaysia.
Muhammad Fadhil
MF
Nuruddin
Civil Engineering Department, Universiti Teknologi PETRONAS, Block 13, Level III, 31750 Tronoh, Perak, Malaysia.
Sadaqat Ullah
0000-0002-3845-541X
SU
Khan
Civil Engineering Department, Universiti Teknologi PETRONAS, Block 13, Level III, 31750 Tronoh, Perak, Malaysia.
Nasir
N
Shafiq
Civil Engineering Department, Universiti Teknologi PETRONAS, Block 13, Level III, 31750 Tronoh, Perak, Malaysia.
Tehmina
0000-0002-7360-0440
T
Ayub
D003252:Construction Materials / Q000592:standards; D008422:Materials Testing / Q000379:methods*; D011142:Polyvinyl Alcohol / Q000592:standards; D013314:Stress, Mechanical; D013718:Tensile Strength
D011142:Polyvinyl Alcohol