This study primarily emphasizes the effect of alkaline treatment on surface morphology, and physical properties extracted bamboo fibers were investigated in detail. The from raw culms using a mechanical extraction process followed by roller-milling techniques. their chemical composition examined based standard requirements. sun-dried subjected to modifications treating them with 5 wt.% NaOH solution. involved soaking for 1 day at ambient temperature; subsequently, alkali-treated washed...

Concrete crack is one of the main problems observed in concrete technology due to drying shrinkage. Incorporating fibers production mechanisms implemented mitigate cracks. Nowadays, investigators concentrate on different techniques replace human‐made fiber with existing natural for fiber‐reinforced composite material. Utilization has an initiation development eco‐friendly materials by reducing damages caused and saving nonrenewable resources. Natural are readily abundantly available,...

This research explores the use of treated hybrid natural fibers—wheat straw and bamboo—as reinforcements in concrete for pavement applications. Motivated by environmental economic benefits, study investigates how these fibers can enhance mechanical durability properties concrete. Wheat fibers, abundant Ethiopia due to extensive wheat farming, help control micro-cracks increase tensile strength concrete, while bamboo also locally available, reduce macro-crack propagation improve toughness. To...

Currently, researchers are more focusing on eco-friendly materials, sustainability, and low consumption of energy during the stage handling, initial cost, have appropriate mechanical properties biodegradable less susceptible to health hazards main challenge facing in present day across world especially developing new materials that would improve industrial supplies for making lightweight materials. Therefore; natural cellulosic fiber one, effective strategies substitute artificial fibers its...

This specific study investigates the chemical and morphological properties of naturally treated wheat straw fiber growing around in Jimma zone. The composition including cellulose 45.43%, hemicellulose 36.50%, lignin 21.61% were determined. physical fibers, such as bulk density, particle moisture content, ash are 0.037 g/cm3, 0.194 10.04%, 1.44%, respectively. functional group was established by Fourier transform infrared spectroscopy (FTIR), crystallinity index is calculated X-ray powder...

For welded bridge components, the knowledge of residual stresses induced by welding is essential to determine their effect on fatigue life behavior resulting in optimal design and a better about strength these connections. The component an orthotropic steel deck are determined with incremental hole-drilling method. This method specified American Society for Testing Materials ASTM E837-13a it can be used only when material linear-elastic. However region bored hole, there relaxed plastic...

The resilience of underground tunnels has gained paramount importance recently, driven by the need to ensure safety and functionality critical transportation infrastructure systems during seismic events. Underground are prone severe damage when soil condition is poor located in a high zone. While behavior individual been extensively studied, concept multiple combined into large tunnel complex relatively new, with limited available research focusing on rectangular-shaped complexes requiring...

Seismic fragility assessment is the probability of damage exceeding a certain design limit. The dynamic performance combined multiple tunnel complex less explored and requires thorough study. This research based on numerical approach to evaluate caused two new types complexes, i.e. twin triple complexes in soft soil profile. A two-dimensional (2D) finite element analysis performed determine induced bending moments for each develop seismic curves. set full acceleration-time histories are...

Non-destructive testing by means of strain gauges may be a straightforward operation under laboratory conditions. When applied on construction site it becomes wholly different matter. This paper is concerned with the use as control mechanism effectiveness post-tensioning large concrete beams, used part roof cut-and-cover tunnel for high-speed train link passing Antwerp Central Station. The emphasis this placed practical execution measurements and specific problems encountered when working...

The empirical Bayes (EB) method is widely acclaimed for crash hotspot identification (HSID), which integrates prediction model estimates and observed frequency to compute the expected of a site. traditional negative binomial (NB) models, often used estimate predictive typically struggle with accounting unobserved heterogeneity in data. Complex extensions NB models are applied overcome these shortcomings. These techniques also present new challenges, instance, applying EB procedures,...

This research utilises statistical modelling to explore the impact of roadway infrastructure elements, primarily those related cross-section design, on crash occurrences in urban areas. Cross-section design is an important step geometric process as it influences key operational characteristics like capacity, cost, safety, and overall functionality transport system entity. Evaluating influence these factors relatively straightforward, except for its especially The safety aspect has resulted...