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Abstract
Self-compacting concrete (SCC) is today a pretty well-known technology.
Since its inception in the late 1980s, self-compacting concrete has brought in a
wave of changes for the construction industry. SCC has been considered as a
quiet revolution in the concrete construction process, with major benefits in
increased productivity, enhanced constructions quality, and much improved
working environment on site. Already, it is rapidly gaining acceptance
throughout the industry and being viewed by many as having the potential of
replacing most of the ordinary concrete currently produced.
The main objective of this research is to study the fresh and mechanical
properties of self-compacting concrete incorporating ground glass powder (GGP)
and comparing them with those of SCC incorporating silica fume (SF). Both
ground glass powder and silica fume were used as a partial replacement of the
cement content with different percentages to keep the total cementitious
materials at 400 kg/nr’,
Also, several trial mixes of SCC were planned for this purpose in order to
select the optimum mix proportions of the mixes. For fresh properties of
self compacting concrete, slump flow test, V-funnel test and L-box test were
used. Static compression test; indirect tension test, and flexural strength test were
performed to determine SCC hardened properties. In addition, SCC was used to
cast both unreinforced and reinforced structural members in order to evaluate its
performance in such applications.
The experimental results showed that the self-compacting concrete could
be successfully developed by incorporating either GGP or GGP and SF together
in the mix. The presence of silica fume in SCC mixes improved its flowability
when added at a small percentage as a partial replacement of the cement content,
while a gradual decrease occurred as the percentage of SF increased. Ground
glass powder showed a similar performance to that of the SF but with a lower
degree. Ground glass powder SCC mixes showed better rheological properties in