This paper presents the results of authors' laboratory testing physical, mechanical and durability properties Ultra-high Performance Concrete (UHPC). The short history development application UHPC concrete is presented in first part this while second deals with experimental investigation, presenting material characterization obtained from physical-mechanical tests. Based on shown paper, mean va...

In civil engineering, image recognition technology in artificial intelligence is widely used structural damage detection. Traditional crack monitoring based on concrete images uses processing, which requires high preprocessing techniques, and the results of detection are vulnerable to factors, such as lighting noise. this study, full convolutional neural networks FCN-8s, FCN-16s, FCN-32s applie...

The cost of producing concrete has increased, and its effects on the natural environment have become apparent. ideal solution is to use agro-waste material instead cement in concrete. Palm oil fuel ash (POFA) a by-product burning waste at palm power plant. Looking utilization POFA research, there been study conducted behaviour properties normal strength containing terms compressive performance....

Abstract 3D printed ultra-high performance concrete (3DP-UHPC) plays an important role in the realization of compressive and tensile strengths. Considering particular characteristics UHPC, conversion UHPC to 3DP-UHPC is a complex phenomenon has been subject numerous studies. It very be able design thixotropic structure early hydration stage for bridging gap between slow setting rapid printing p...

Ultra-High Performance Concrete (UHPC) is a new generation of concrete characterized by its high strength, durability, and stiffness. Autogenously shrinkage represents one the issues UHPC that occurred at early ages. It occurs particularly during first 48 hours after casting. This paper focuses on ways can be depended to mitigate autogenously obtain outstanding mechanical properties UHPC. The r...

In recent times, the shape of beams evolved from wooden sleepers and then to steel until they reached concrete sleepers. These play a very important role in transferring loads train wheels subgrade layers fixed by railway. This development took place we mono-block paper discusses, through laboratory experiments, effect ultra-high performance mixtures on behavior sleeper B70. The ability these n...

Abstract: This study investigated the effects of different fiber contents by volume (0%, 1%, 2%, and 3%) on flowability, entrapped air content, and compressive and flexural strength of ultra high performance concrete (UHPC). Four water-to-binder ratios (0.18, 0.20, 0.22, 0.24) were used and four different dosages of superplasticizer were introduced for preparing each water-to-binder ratio mixtu...

The recycling of construction and demolition waste material reduces disposal also the consumption resources, therefore promoting sustainability in construction. Ultra-high performance concrete (UHPC) is a relatively new its feasibility to be recycled needs verified. This work investigates recyclability UHPC disposed elements, including production aggregates fibres from UHPC. at different replac...

Without interrupting the traffic on old bridge, connection of widening bridge will cause disturbance to concrete in splicing position. In order study anti-disturbance performance material, Normal Concrete (NC) material and Ultra-High-Performance (UHPC) were experimentally investigated by vertical shaking table X-ray computed tomography scanning. It can be learnt from tests that compressive stre...