الفهرس 
Introduction, Literature Review and Object of InvestigationOnly 14 pages are availabe for public view
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Abstract
The environmental impact associated with the production processes of
Portland cements (OPC), the main hydraulic binder since the 19th century,
includes: greenhouse gases emissions, high energy consumption and
natural resource exploitation. Also, the recognition of durability problems in
older structures based in OPC has acted as an impetus to transfer the
microstructural and hydration chemistry studies of these conventional
binders to develop a novel generation of cements with durability and
environmental sustainability. The partial replacement of OPC by active
nano-powders or supplementary cementing materials, such as ground
granulated blast furnace slag (GGBFS), silica fume (SF), rice husk ash (RHA),
metakaolin (MK) or fly ash (FA), are examples of those new binders and
constitute a significant contribution to the eco-efficiency of the global
economy. This study investigates the reinforcing of raw materials rich in silica and alumina such as slag, flyash and silica fume with various fiber
types (steel, carbon, polypropylene and glass) added by specific ratios by
weight activated by an alkaline activator sodium hydroxide in order to
produce reinforced geopolymer composites. Mechanical properties,
water/binder ratio, and compressive strength are discussed. Laboratory
techniques of Fourier Transform Infrared Spectroscopy (FTIR), X-ray
Fluorescence (XRF), and X-Ray Diffraction (XRD) were utilized to identify
geopolymer phases and structures. The results proved that adding different
fiber types with specific ratio produced geopolymer composites possessing
good mechanical resistance in addition to better physical characteristics like
drying shrinkage, water absorption, crack propagation, and post-cracking
besides microstructural investigation by Scanning Electron Microscope
inferred that the yielded composites have almost compact homogenous
structure free of pores.