The development of non-proprietary Ultra-High Performance Concrete (UHPC) is one way to reduce the initial cost construction. However, workability a major issue for which such mixtures are not practical in field conditions. Ultra-high performance cannot be achieved conditions if concrete placed, finished, and compacted properly during placement. In this research, six UHPC were developed (three ...

Reutilizing industrial by-products and recycled concrete aggregates (RCA) to replace cement natural (NA) in is becoming increasingly important for sustainable development. Yet, experimental evidence needed prior the widespread use of this by construction industry. This study examines performance alkali-activated slag made with RCA reinforced steel fibers. Natural coarse were replaced RCA. Steel...

This research aims to investigate the most efficient and potential steel fiber among all four i.e. hooked, crimped, twisted straight, that contributes in boosting performance quality of concrete after extensive examinations. Several mixes were examined, incorporated with fly ash (FA) metakaoline (MK) various proportions FA15%+MK4.5%, FA20%+MK9%, FA25%+MK13.5%, FA30%+MK18% each composition is re...

This study presents the experimental results about effects of Polyvinyl-alcohol (PVA) and Polypropylene (PP) fibers on fresh mechanical properties including compressive, splitting tensile strength, modulus rupture (MOR) as well toughness hybrid fiber reinforced self-compacting concrete (SCC). PVA PP were added into SCC mixtures having only macro steel also binary hybridization both micro fiber....

The scientific community is shifting its focus towards construction materials with a low carbon footprint, such as alkali-activated concrete (AAC). present study conducts an environmental impact assessment using the cradle-to-grave approach to examine implications of three different types ambient-cured AACs varied combinations precursors. 28-day compressive strength values mixes used for compar...

This study proposes an improved bonding method for attaching a fiber Bragg grating (FBG) on surface of a structure to measure its dynamic strains. The improved bonding fiber Bragg grating is called IBFBG for short in this study. The bonding method provides the chance to let the IBFBG and resistance strain gauge measure the longitudinal strain at the same point. This study use two steel cantilev...

This research work, which presents a simplified technique of modelling steel fibers, uses python algorithm that can be directly run in ABAQUS to automatically generate the location and orientation fibers rectangular ultra-high performance concrete specimen, so effect on properties such specimen investigated through numerical simulation. method is fast, applied structural members bigger dimensio...

In order to study the mechanical and damage behavior of concrete shield tunnel segments under a high temperature, two self-compacting three mixed-fiber (steel polypropylene fiber) test blocks were designed. The influence several key factors, including fire duration, pre-loading, type, on studied. results show that type fiber pre-loading have an important crack development in segments. Compared ...

The application of waste materials in the concrete composite is a great contribution to preserving natural resources and enhancing sustainable greener development construction industry. This study used Palm Oil Clinker (POC) steel fibers manufacture high-strength lightweight (HSLWC). POC basically byproduct palm oil industry, which was utilized as coarse aggregates supplementary cementitious co...

It has been established that carbon plastics are increasingly used in various industries as structural materials. By the set of their properties, outperform steel, cast iron, alloys non-ferrous metals. However, application these materials for parts machine friction units is still limited due to difficult operating conditions modern tribosystems. This work aims conduct a comprehensive experiment...