A precast concrete deck-steel beam-connection (PCSC) connector using ultra-high-performance (UHPC) as post-cast has been proposed to enable rapid on-site construction of assembled composite bridges. This paper aims optimize the structure PCSC connectors finite element (FE) model maximize material utilization and economic efficiency. refined FE comprising bond degradation at steel–UHPC interface...

The short-headed stud connectors play a critical role on the interaction of orthotropic steel deck (OSD) and ultra-high performance concrete (UHPC) layer in steel-UHPC composite bridge deck. In this paper, fatigue behavior these was experimentally investigated beam test. failure modes were identified classified into 5 types. test results analyzed by linear regression analysis neglecting run-out...

The effect of superplasticizer (SP) on the performance ultra-high-performance concrete (UHPC) and fiber-reinforced (UHPFRC) has been systematically investigated aiming to optimize use SP. slump flow, V-funnel time were employed evaluate impact SP workability, while compressive strength had used for mechanical property. Moreover, packing density, as well water film thickness calculated uncover m...

The cement composition of concrete directly affects the CO2emissions to environment. UHPC (Ultra High-Performance Concrete) is a new type rapidly gaining popularity in building industry due its superior strength and endurance. In contrast regular concrete, requires more than twice as much cement, making it expensive leaving significant carbon imprint. this study, waste was substituted with 4%, ...

This paper presents a numerical procedure for evaluating the thermo-mechanical response of Ultra-High Performance Concrete (UHPC) beams exposed to fire. The model is based on macroscopic finite element formulation and utilizes sectional moment-curvature relations trace UHPC from linear elastic stage collapse under combined effects fire structural loading. Fire-induced spalling, temperature-depe...

Natural plant fibers represent a sustainable alternative to conventional fiber reinforcement materials in cementitious due their suitable mechanical properties, cost-effective availability and principle carbon neutrality. Due its high tensile strength stiffness as well worldwide distribution along with rapid growth, bamboo offers itself particular source. In experimental studies on concrete bea...

The increase in cement production as a result of growing demand the construction sector means an energy consumption and CO2 emissions. These emissions are estimated at 7% global CO2. Ultra-high-performance concrete (UHPC) has excellent mechanical durability characteristics. Nevertheless, it is costly affects environment due to its high amount cement, which may reach 800–1000 kg/m3. In order red...

Ultra-high performance concrete (UHPC) has been accepted rapidly attributed to its superior mechanical and the split Hopkinson pressure bar (SHPB) is being widely utilized evaluate dynamic compressive properties of UHPC. Numerous studies have performed on behaviour UHPC, however, a systematic summary analysis UHPC tested by SHPB still missing. The review starts introducing advantages, deficienc...