الفهرس 
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Abstract
3
Polymer concrete is an aggregate mixture that uses some type of epoxy binder to cure and
harden into place. A polyester, vinyl ester, or normal epoxy mixture is often used, but
polymer concrete can be made with many kinds of polymer resins that allow the concrete
to be poured or troweled and then hardened. It cures through a chemical reaction with the
polymer material. Like traditional concrete, it also has, sand and gravel or crushed stone
as primary ingredients. Polymer concrete is not like traditional concrete, although it uses
some of the same types of materials. It is also used for construction projects in the same
manner, but the polymer compounds give the concrete several characteristics that tend to
make it safer or more durable than regular concrete. Polymer concrete tends to be more
expensive than the traditional version and is measured more specifically in terms of
density and shrinkage. Textile reinforced concrete (TRC) materials have gained
popularity as strengthening systems over the last two decades due to their light-weight,
resistance to corrosion, resistance to high temperatures, high strength, and superior
absorbed energy. A typical TRC composite consists of high-strength fibers made of
carbon, basalt, or glass in the form of textile fabrics embedded in fine grained
cementitous concrete or mortar. Due to some problems in this type of composite related
to the bond behavior between textile and ceentecious matrix it was suggested to replace
the cementecious matrix with polymer matrix due to its high bond characteristics.
However the behavior of this type of composite under high loading rate conditions is still
questionable. These repaired constructions are most probably to be subjected to dynamic
loads however, these kinds of loads are difficult to study and simulate in lab. Hopkinson
split pressure bar is a good test apparatus that can cover the range of dynamic loading that4
need to be studied with adequate accuracy because of the nature of its measuring system
that element stress wave superposition opportunity. In this regard a study was conducted
on this composite to investigate its behavior in high loading rate conditions. a dynamic
punching shear and flexure tests were conducted using modified setup of SHPB.
Specimens were prepared using two types of polymer matrix with, high and low strength,
with different amounts of steel and fiber glass textile as reinforcement materials. A load
displacement curves and energy absorbed were calculated and compared. It was found
that adding two glass fibers layers to the high strength matrix makes the strength and
absorbed energy reaches 117% in strength and 124% in energy absorbed in case of
dynamic punching shear conditions. Also adding two fiber glass layers to the low
strength matrix make the strength and the absorbed energy reach 115% in strength and
119% in absorbed energy in case of dynamic flexure conditions. Such improvements
demonstrate the benefit of using the TRPC material as a construction material subjected
to high loading rate conditions.