Preface
Compared with the normal strength concrete (NSC), ultra-high performance
cementitious composites (UHPCC) is a relativity new type of cementitious materials which consists of very low water-to-binder ratio, high amount of high-range
water reducer, fine aggregates and high-strength steel or organic fibers. With the
prominent mechanical properties, e.g., high compressive and tensile strength, high
ductility, high fracture energy and very low permeability, UHPCC has been becoming
the most prospective construction cement-based material for both civil and military
engineering structures, such as fortifications, nuclear waste storage containments,
highway bridges, high-rise buildings, to resist high-speed projectile penetration, lowvelocity impact and blast, as well as earthquake loadings. Therefore, investigations
on the static and dynamic mechanical properties as well as the impact and blast
resistance of UHPCC are essential and important for the design and safety assessment of protective structures. In this book, the related work conducted by authors
are presented and the main contents are as follows:
Chapter 1: A series of cubic/axial compressive, direct tensile, four-point and threepoint flexural tests on UHPCC specimens are presented, in which the effects of six
volume fractions (0 ~ 2.5%) and two types (micro-straight and hooked) of steel fibers
on the static mechanical properties of UHPCC are examined.
Chapter 2: The SHPB test on UHPCC specimens is presented, in which the effects
of strain rate ranges from 17.6 to 328.4 s
−1 and two typical steel fibers (micro-straight
and hooked) with three volume fractions of 0%, 1.0% and 2.0% on the dynamic
compressive mechanical properties of UHPCC are analyzed.
Chapter 3: By using a 50 mm-diameter conic variable cross-sectional SHPB, the
dynamic spalling test on cylindrical UHPCC specimens is given, and the influences
of the tensile strain rate range from 14.3 to 214.8 s
−1 , and two typical steel fibers
(micro-straight and hooked) with three volume fractions of 0%, 1.0% and 2.0% on
the dynamic tensile mechanical properties of UHPCC are studied.
Chapter 4: The triaxial compressive behavior of UHPCC under high confining
pressure (up to 100 MPa) is experimentally studied, and the failure criteria and
toughness of UHPCC under triaxial compression are discussed.
Chapter 5: The impact resistance of coarse aggregated UHPCC target against
the medium caliber projectile is studied. The high-speed projectile penetration tests
v
Compared with the normal strength concrete (NSC), ultra-high performance
cementitious composites (UHPCC) is a relativity new type of cementitious materials which consists of very low water-to-binder ratio, high amount of high-range
water reducer, fine aggregates and high-strength steel or organic fibers. With the
prominent mechanical properties, e.g., high compressive and tensile strength, high
ductility, high fracture energy and very low permeability, UHPCC has been becoming
the most prospective construction cement-based material for both civil and military
engineering structures, such as fortifications, nuclear waste storage containments,
highway bridges, high-rise buildings, to resist high-speed projectile penetration, lowvelocity impact and blast, as well as earthquake loadings. Therefore, investigations
on the static and dynamic mechanical properties as well as the impact and blast
resistance of UHPCC are essential and important for the design and safety assessment of protective structures. In this book, the related work conducted by authors
are presented and the main contents are as follows:
Chapter 1: A series of cubic/axial compressive, direct tensile, four-point and threepoint flexural tests on UHPCC specimens are presented, in which the effects of six
volume fractions (0 ~ 2.5%) and two types (micro-straight and hooked) of steel fibers
on the static mechanical properties of UHPCC are examined.
Chapter 2: The SHPB test on UHPCC specimens is presented, in which the effects
of strain rate ranges from 17.6 to 328.4 s
−1 and two typical steel fibers (micro-straight
and hooked) with three volume fractions of 0%, 1.0% and 2.0% on the dynamic
compressive mechanical properties of UHPCC are analyzed.
Chapter 3: By using a 50 mm-diameter conic variable cross-sectional SHPB, the
dynamic spalling test on cylindrical UHPCC specimens is given, and the influences
of the tensile strain rate range from 14.3 to 214.8 s
−1 , and two typical steel fibers
(micro-straight and hooked) with three volume fractions of 0%, 1.0% and 2.0% on
the dynamic tensile mechanical properties of UHPCC are studied.
Chapter 4: The triaxial compressive behavior of UHPCC under high confining
pressure (up to 100 MPa) is experimentally studied, and the failure criteria and
toughness of UHPCC under triaxial compression are discussed.
Chapter 5: The impact resistance of coarse aggregated UHPCC target against
the medium caliber projectile is studied. The high-speed projectile penetration tests
v