Abstract:
The usage of high strength glass fiber reinforced concrete (HSGFRC) in the
construction applications has been increasing worldwide . these it will definitely
have an impact on SUDAN. due to the vast land area available for construction, in
addition to the unstable economic conditions , the fast growing population and
locally available , strong and relatively cheap, and locally available repairing and
strengthening material. The main objective of this investigation is to study the
effect of addition of alkali resistant glass fiber reinforced polymer (AR-GFRP)
with various proportions typically 0.0 , 0.75 , 1.0 , 1.25 and 1.5 by weight of
cement on the mechanical behavior of plain HSC (without fiber) with 28 days cube
compressive strength up to 55.2 MPa using available materials in the local market.
Results show that it is possible to produce HSGFRC in Sudan using materials that
are available at the local markets if they are carefully selected. Based on the
experimental results, the compressive strength, splitting tensile strength and
density of HSC is found to be increases as fiber percentage increases for both ages
7 and 28 days.
The compressive strength of HSC is found in the 28 days percentage of increasing
over the reference mix is found to be maximum equal to 7.46% at 1.5 fiber
percentage. The density of HSC is found to be increases very slightly as fiber
percentage increases from 0.0 to 1.5, typically from 2.415 to 2.442 kg/m3 . The
splitting tensile strength of HSC is found in the 28 days‘ percentage of increasing
over the reference mix is found to be maximum equal to 52.45% at 1.5 fiber
percentage.
