DOI: 10.5937/jaes14-11116
This is an open access article distributed under the CC BY-NC-ND 4.0 terms and conditions.
Volume 14 article 388 pages: 345-350
The aim of this
research work is to investigate the optimum replacement of cement by silica fume
and fly ash and to calculate the compressive strength of concrete. The cement
has been replaced by fly ash and Silica fume varying in different percentage
like 0%, 10%, 20%, 30%, 40% and 50% by weight of cement. Concrete specimens of
ratios 1:2:4 and 1:1.5:3 were prepared, cured, tested and compared in term of
compressive and split tensile strength with the traditional concrete. Tests
were conducted to calculate the mechanical properties for the concrete ranging
from 7, 14 and 28 days curing both for compressive and split tensile strength.
It has been observed that the compressive strength increases when cement is
replaced 10% by Silica fume and Fly ash. However, the compressive strength is
gradually reduced when the cement replaced more than 10%. The effect of Silica fume
and Fly ash on various other concrete properties has also been investigated in
this paper. It has also been observed that the use of Silica fume and Fly ash
not only improve the various properties of concrete but could also be economical
in cost of construction.
The details of the experimental study shown in
this paper were conducted in the Structural Engineering Laboratory, Department
of Civil Engineering, Quaid-e-Awam University College of Engineering, Science
and Technology, Nawabshah. The authors are highly thankful to the students and
the laboratory staff for their cooperation in this regard.
Michael
Thomas, Ph.D., P.Eng., Professor of Civil Engineering, .Optimizing the Use of
Fly Ash in Concrete. University of New Brunswick
Min-Hong,
Zhang., Marcia, C. Blanchette., and V, M. Malhotra., Leachability of Trace
Metal Elements from Fly Ash Concrete: Results form Column- Leaching and Batch
Leaching Tests, ACI Materials Journal, 2001, 98 (2), pp.126-136.
Ozkan,
Sengul., and Mehmet, Ali. Tasdemir., 2009, .Compressive Strength and Rapid
Chloride Permeability of Concretes with Ground Fly Ash and Slag., Journal of
Materials in Civil Engineering, 2009, 21 (9), pp.494-501.
Elkhadiri,
I., Diouri, A., Boukhari.A., Aride, J., Puertas, F., Mechanical behaviour of
various mortars made by combined fly ash and limestone in Moroccan Portland
cement, Cement and Concrete Research, 2002, 32, pp.1597-1603.
Poon, C.
S., Lam, L., Wong, Y. L., .A Study on High Strength Concrete Prepared with
Large Volumes of low Calcium Fly Ash., Cement and Concrete Research, 2002, 30
(3), pp. 447-455.
Md. Moinul
Islam, Md. Saiful Islam, .Strength Behaviour of Mortar Using Fly ash as Partial
Replacement of Cement. Concrete Research Letters, Vol. 1(3) 2010, pp. 98-106
ASTM C
190-85, Standard Test Method for Tensile Strength of Hydraulic Cement Mortars,
Annual Book of ASTM Standards, 1988, (Vol. 4.01-Cements, Lime, Gypsum), Easton,
USA
Vishal S.
Ghutke, Pranita S. Bhandari, .Influence of silica fume on concrete., IOSR
Journal of Mechanical and Civil Engineering (IOSRJMCE) e-ISSN: 2278-1684,
p-ISSN: 2320- 334X, PP 44-47, 2014
Jayeshkumar
Pitroda, L.B. Zala, F.S. Umrigar, .Experimental Investigations on Partial
Replacement of Cement with Fly ash in design mix concrete., International
Journal of Advanced Engineering Technology, IJAET Vol.3 Issue 4 Oct.-Dec.,
2012, pp.126-129.
Salim
Khoso, Farhan H. wagan, Jam S. Khan, N.K. Bhatti, A.A. Ansari, .Qualitative
Analysis of Baked Clay Bricks available in Larkana region, Pakistan. Journal of
Architecture Civil Engineering Environment ACEE, Poland June, 2014, Vol. 7, No.
2, June 2014, pp. 41-50.
Muhammad
Tayyab Naqash, Khalid Mahmood, Salim Khoso .An Overview on the Seismic Design
of Braced Frames. American Journal of Civil Engineering, Vol. 2, No. 2, 30th March,
2014, pp. 41-47.
Salim Khoso,
Abdul Aziz Ansari, Farhan H. Wagan, .Investigative Construction of Buildings using
Baked Clay Post-reinforced Beam Panels. Journal of Architecture Civil
Engineering Poland December, 2014, Vol. 7, No. 4, December 2014, pp. 57-66.
ISSN: 1899-0142.
A.A.
Ansari, Sajjad. A. Mangi, Salim Khoso, Kanya L. Khatri, Ghulam S. Solangi, .
Latest Developments in the Structural Material Consisting of Reinforced Baked
Clay. in proceedings of 7th International Civil Engineering Congress (ICEC-
2015), Sustainable Developments through Advancements in Civil Engineering, June
12-13, 2015, Karachi, Pakistan, pp. 33-43.
Salim Khoso,
Farhan Hussain Wagan, Abdul Hanan Tunio, Abdul Aziz Ansari, .An Overview on
Emerging Water Scarcity in Pakistan; its causes, Impacts and remedial
measures., Journal of Applied Engineering Science, Serbia, ISSN 1451-4117,
March, 2015, Vol.13, No.1, pp 35-44.
Salim
Khoso, A.A. Ansari, Jam S. Khan, Farhan H. Wagan, . Experimental Study on
Recycled Concrete using Dismantled Road Aggregate and Baggase Ash. In
proceedings of 7th International Civil Engineering Congress (ICEC- 2015),
Sustainable Developments through Advancements in Civil Engineering, June 12-13,
2015, Karachi, Pakistan, pp. 54-61.