This study illustrates the effect of incorporating natural pozzolan (NP) and silica fume (SF) in cement-based mortars on compressive strength. Up to 40% weight cement can be replaced by NP powder. its state used replace up volume sand mortars. The replacement levels with SF are 5% 10% improve mechanical properties NP-based Experiments were conducted assess strength containing at 28 180 days curing. water/cement ratio was 0.49 for all specimens. Models NP-SF-based formulated based nonlinear...

In a view to reduce the cost of production and harmful destruction in normal environment, there's lot research have been conducted or still ongoing for possibility using natural fibers which are wholly degradable combination biodegradable thermoplastic materials. This will focus on Kenaf; an extremely valuable fiber with robust mechanical properties. this research, kenaf fiber/fiberglass reinforced unsaturated polyester composites were subjected water absorption test. Water test by immersing...

Purpose. The purpose of the paper is to provide open-pit mining operations with practical strategies and insights optimize truck loading hauling cycles, ultimately leading enhanced productivity economic advantages. Methods. objectives are minimize time, haul road network, enhance performance, dumping return time. By diligently implementing these methods achieving objectives, can significantly reduce cycle times, resulting in increased productivity, lower costs improved profitability....

This research demonstrates the results of an investigation into California bearing ratio (CBR) granular soils from Qassim region, Saudi Arabia, using multilinear regression (MLR), pure quadratic (PQ) models, and gene expression programming (GEP) methods utilized to develop mathematical models for estimating CBR based on basic soil index properties. In this study, samples were collected different borrowing pits in area. Forty‐three taken transferred a laboratory examination. Seven regressions...

The effects of polypropylene fibres on mortar and cement-paste cracking were investigated using different amounts fibre fractions eccentric rings under restrained-shrinkage conditions. Eccentric-ring tests conducted to investigate early-age shrinkage cracks. characteristics restricted cementitious materials described by evaluating the time concrete mixtures that are less likely crack. Different fibre-volume significantly enhanced width, area, age cracking. Increasing water-cement ratio sand...

The outbreak of COVID-19 has had a profound impact on the Saudi construction industry as well country’s economy. pandemic jeopardized positive perspectives and growth in megaproject numbers, it amplified constraints that prevent sector from realizing growth. This research work is intended to evaluate status during pandemic. In order achieve this objective, three-phased methodology was developed. first part research, semi-structured interviews with forty experts were conducted. gathered data...

Piles are used widely for stabilization of landslides. To stabilize a slope settled on bedrock with piles the required factor safety must be checked, and pile should designed properly. socketed into firm rock to prevent uprooting or overturning .In this research it is aimed look length in bedrock. Therefore parameters that affect slope/pile system such as location, length, spacing diameter analyzed. The effect behavior investigated by plotting shear force bending moment diagrams along pile....

Examining the factors contributing to work zone crashes and implementing measures reduce their occurrence can significantly improve road safety. In this research, we utilized explainable boosting machine (EBM), a modern glass-box learning (ML) model, categorize predict zone-related interpret various factors. The issue of data imbalance was also addressed by utilizing crash from state New Jersey, comprising collected over course two years (2017 2018) applying augmentation strategies such...

Abstract Groundwater is the main source of fresh water in arid regions. The Saq aquifer a transboundary sandstone groundwater layer that extended into Saudi Arabia and Jordan. level depleted due to extensive pumping with negligible natural recharge. objective this study predict artificial recharge supplied from runoff for selected area Qassim region, KSA using mathematical models. maximum weekly daily rainfall was quantified at different return periods urban areas graphical probability...

This paper proposes an eccentric ring test that can be used to determine the behaviour of restrained cement materials with regard cracking time and select concrete mixtures are less likely crack. The effects polypropylene fibres on cementitious composites were investigated using three volume fractions rings under shrinkage. Different (0.4%, 0.6%, 0.8%) lead considerable improvements in terms number cracks, age, crack area. A regression model for predicting properties was developed. null...

This paper presents a numerical study that performs the stability of slopes on bedrock reinforced with single pile row at different locations. The slope is formed top sliding soil layer underlies over rock. analysis has been implemented by employing three dimensional using FLAC3D. results indicate as location moved towards crest displacement increases.In application, factor safety reached its maximum value when located middle slope. Considering failure mode conclude modes; above, in front,...