Effect of Crashed Stone on Properties of Fly Ash Based-Geopolymer Concrete with Local Alkaline Activator in Egypt
Abstract:Green concrete are generally composed of recycling
materials as hundred or partial percent substitutes for aggregate,
cement, and admixture in concrete. To reduce greenhouse gas
emissions, efforts are needed to develop environmentally friendly
construction materials. Using of fly ash based geopolymer as an
alternative binder can help reduce CO2 emission of concrete. The
binder of geopolymer concrete is different from the ordinary Portland
cement concrete. Geopolymer Concrete specimens were prepared
with different concentration of NaOH solution M10, M14, and, M16
and cured at 60ºC in duration of 24 hours and 8 hours, in addition to
the curing in direct sunlight. Thus, it is necessary to study the effects
of the geopolymer binder on the behavior of concrete. Concrete is
made by using geopolymer technology is environmental friendly and
could be considered as part of the sustainable development. In this
study, the Local Alkaline Activator in Egypt and crashed stone as
coarse aggregate in fly ash based-geopolymer concrete was
investigated. This paper illustrates the development of mechanical
properties. Since the gained compressive strength for geopolymer
concrete at 28 days was in the range of 22.5MPa – 43.9MPa.
 O. M. Omar, G. D. Abd Elhameed b, M. A. Sherif, H. A. Mohamadien,
Influence of limes tone waste as partial replacement material for sand
and marble powder in concrete properties. HBRC Journal 8 (2012)193–
203, to be published.
 S. Demie, M. F. Nuruddin, N. Shafiq, Effects of micro-structure
characteristics of interfacial transition zone on the compressive strength
of self-compacting geopolymer concrete. Construction and Building
Materials 41 (2013) 91–98, to be published.
 J. davidovits, Global worming impact on the cement and aggregates
industries. World resource review 6 (1994) 263–278, to be published.
 J. davidovits, properties of geopolymer cements. International
conference on alkaline cement and concretes, kive state technical
university, kive, ukraine (1994) 131–149 to be published.
 ECCS Egyptian code ECCS 203–2008.
 ESS 1109/2002 Egyptian Standard Specifications, concrete aggregates
from natural sources.
 ASTM C618 Class F, Standard Specification for Coal Fly Ash and Raw
or Calcined Natural Pozzolan for Use in Concrete.
 A. A. Adam, Strength and Durability Properties of Alkali Activated Slag
and Fly Ash-Based Geopolymer Concrete. Ph. D. thesis, RMIT
University, Melbourne, Australia (2009).
 V. Bhikshma, M. K. Reddyb and T. S. Raoa, An experimental
investigation on properties of geopolymer concrete (no cement
concrete). Asian Journal of Civil Engineering, Building and Housing 13
(2012) 841-853, to be published.
 D. Hardjito, Studies on Fly Ash-Based Geopolymer Concrete. Ph. D.
thesis, Curtin University of Technology, Australia (2005).
 S. G. Patil1, Manojkumar, factors influencing compressive strength of
geopolymer concrete. International Journal of Research in Engineering
and Technology (2013) 372-375, to be published.
 A. Sathonsaowaphak, P. Chindaprasirt, K. Pimraksa,Workability and
strength of lignite bottom ash geopolymer mortar. Journal of Hazardous
Materials 16 8 (2009) 44–50, to be published.
 A. M Mustafa Al Bakri1, H. Kamarudin, M. Bnhussain, I. Khairul Nizar,
A. R Rafiza1 and Y.Zarina, Microstructure of different NaOH molarity
of fly ashbased green polymeric cement. Journal of Engineering and
Technology Research 3 (2011) 44-49, to be published.
 B. V. Rangan, Fly Ash-Based Geopolymer Concrete. International
Workshop on Geopolymer Cement and Concrete, Allied Publishers
Private Limited, Mumbai, India, (2010) 68-106, to be published.
 D. Dutta, Influence of Silicious and Calcious Material As an Additive on
the Performance of Fly Ash Based Geopolymer Paste and Mortar. M.Sc.
thesis, Jadavpur University (2010).
 Y. Xu, Y.L. Wong, C.S. Poon, M. Anson, Influence of PFA on cracking
of concrete and cement paste after exposure to high temperatures.
Cement and Concrete Research 33 (2003) 2009–2016, to be published.