Samuel Abbey's Outputs (54)

Development of a learner model tool for predicting strength and embodied carbon for lightweight concrete production (2024)
Journal Article

The demand for sustainable concrete in meeting the net zero carbon target places a burden in optimizing concrete response to structural strength that satisfy acceptable embodied carbon. In most cases, a low carbon concrete is deficient in structural... Read More about Development of a learner model tool for predicting strength and embodied carbon for lightweight concrete production.

Stepping into safety: A systematic review of extended reality technology applications in enhancing vulnerable road user safety (2024)
Journal Article

Purpose-
In alignment with the European Union’s Vision Zero initiative to eliminate road fatalities by 2050, leveraging technological advancements becomes crucial for addressing the challenges of vulnerable road users (VRUs), and for mitigating the... Read More about Stepping into safety: A systematic review of extended reality technology applications in enhancing vulnerable road user safety.

Development of low carbon concrete and prospective of geopolymer concrete using lightweight coarse aggregate and cement replacement materials (2024)
Journal Article

The use of Ground Granulated Blast-furnace Slag (GGBS) as an alternative cement replacement material in combination with conventional coarse aggregate have been successful in the production of near green concrete. Undoubtedly, GGBS has exhibited good... Read More about Development of low carbon concrete and prospective of geopolymer concrete using lightweight coarse aggregate and cement replacement materials.

Numerical modelling of rainfall influence on the susceptibility of a slope to sliding under induced compression (2023)
Journal Article

This study examines the pore water pressure responses and stability of an unsaturated–saturated consolidating slope under the influence of rainfall infiltration. Analysis of slope behaviour was carried out with the results obtained for soils having s... Read More about Numerical modelling of rainfall influence on the susceptibility of a slope to sliding under induced compression.

A phenomenological inquiry of building and living in European Earthship homes (2023)
Journal Article

Earthships remain a relatively under explored type of sustainable/alternative home. This is the first study to investigate the personal experiences of constructing and living in European Earthship-homes. The aim of this study is to reveal insights in... Read More about A phenomenological inquiry of building and living in European Earthship homes.

Wet–dry cycles and microstructural characteristics of expansive subgrade treated with sustainable cementitious waste materials (2023)
Journal Article

This work presents an experimental study on the physico-mechanical and microstructural characteristics of stabilised soils and the effect of wetting and drying cycles on their durability as road subgrade materials. The durability of expansive road su... Read More about Wet–dry cycles and microstructural characteristics of expansive subgrade treated with sustainable cementitious waste materials.

Development of a Lytag-silica fume based lightweight concrete and corresponding design equation for pure bending (2023)
Journal Article

This study presents a novel Lytag-silica fume concrete (LSFC) for structural and other construction applications. The evaluation of compressive strength development and stress strain relationships of the LSFC light weight was carried out to determine... Read More about Development of a Lytag-silica fume based lightweight concrete and corresponding design equation for pure bending.

Modified orange peel waste as a sustainable material for the adsorption of contaminants (2023)
Journal Article

World orange production is estimated at 60 million tons per annum, while the annual production of orange peel waste is 32 million tons. According to available data, the adsorption capacity of orange peel ranges from 3 mg/g to 5 mg/g, while their wate... Read More about Modified orange peel waste as a sustainable material for the adsorption of contaminants.

Behaviour and microstructural characteristics of lime-GGBS-treated kaolin clay contaminated with gypsum (2023)
Journal Article

In this experimental study, the physico-mechanical and microstructural properties of sulphate-bearing clays have been investigated. Sulphate bearing soils constituted by mixing kaolin and gypsum at 0%, 15%, 25%, and 35% gypsum contents were treated w... Read More about Behaviour and microstructural characteristics of lime-GGBS-treated kaolin clay contaminated with gypsum.

Evaluation of the structural performance of low carbon concrete (2022)
Journal Article

Evaluation of the effect of embodied carbon reduction using an optimized design section for a ground beam, use of supplementary cementitious materials, and replacement of normal aggregate with light weight aggregate on the mechanical properties of lo... Read More about Evaluation of the structural performance of low carbon concrete.

Optimisation of embodied carbon and compressive strength in low carbon concrete (2022)
Journal Article

To improve the prediction of compressive strength and embodied carbon of low carbon concrete using a program algorithm developed in MATLAB, 84 datasets of concrete mix raw materials were used. The influence of water, silica fume and ground granular b... Read More about Optimisation of embodied carbon and compressive strength in low carbon concrete.

Shear response of Lime/GGBS-Stabilised High-Sulphate-Bearing Clay under consolidated-undrained conditions (2022)
Journal Article

This study investigated the consolidated undrained shear behaviour of a stabilised high-sulphate soil system. Lime was used to stabilise the soil with the inclusion of ground granulated blast furnace slag (GGBS) as an ettringite suppressor. Both volu... Read More about Shear response of Lime/GGBS-Stabilised High-Sulphate-Bearing Clay under consolidated-undrained conditions.

Performance of sustainable road pavements founded on clay subgrades treated with eco-friendly cementitious materials (2022)
Journal Article

Clays encountered during road construction are mostly weak and result in major pavement failures due to their low California bearing ratio (CBR) and high swelling potential. In this study, sustainable and eco-friendly waste materials including brick... Read More about Performance of sustainable road pavements founded on clay subgrades treated with eco-friendly cementitious materials.

Using Artificial Intelligence techniques to predict intrinsic compressibility characteristic of Clay (2022)
Journal Article

Reconstituted clays have often provided the basis for the interpretation and modelling of the properties of natural clays. The term “intrinsic” was introduced to describe a clay remoulded or reconstituted at moisture content up to 1.5 times its liqui... Read More about Using Artificial Intelligence techniques to predict intrinsic compressibility characteristic of Clay.

A systematic review on the effectiveness of remediation methods for oil contaminated soils (2022)
Journal Article

There is no doubt that several soil remediation methods have been applied in removing oil contaminants in the soil. Selecting an appropriate method is critical for effective cleanup of a contaminated site. The aim of this study is to review field stu... Read More about A systematic review on the effectiveness of remediation methods for oil contaminated soils.

The use of fine portions from construction and demolition waste for expansive soil stabilization: A review (2022)
Journal Article

Construction and demolition waste (CDW) are the largest waste products in the world today and competes as a viable recycled additive material in place of natural aggregates. Due to the increase in compressive strength of different mix proportions of... Read More about The use of fine portions from construction and demolition waste for expansive soil stabilization: A review.

Road pavement defect investigation using treated and untreated expansive road subgrade materials with varying plasticity index (2022)
Journal Article

Road pavement defect has been a major issue in the construction industry leading to a high cost of maintenance and sometimes a total reconstruction of the road. Expansive road subgrade materials are one of the major causes of these road defects. In t... Read More about Road pavement defect investigation using treated and untreated expansive road subgrade materials with varying plasticity index.

Strength predictive modelling of soils treated with calcium-based additives blended with eco-friendly pozzolans—A machine learning approach (2022)
Journal Article

The unconfined compressive strength (UCS) of a stabilised soil is a major mechanical parameter in understanding and developing geomechanical models, and it can be estimated directly by either lab testing of retrieved core samples or remoulded samples... Read More about Strength predictive modelling of soils treated with calcium-based additives blended with eco-friendly pozzolans—A machine learning approach.

DMRB flexible road pavement design using re-engineered expansive road subgrade materials with varying plasticity index (2022)
Journal Article

Pavement thickness is a very vital component during the design stage of a road construction project. Pavement design helps to determine the costs of the project over a certain period to ascertain how the cost of road pavement construction affect the... Read More about DMRB flexible road pavement design using re-engineered expansive road subgrade materials with varying plasticity index.

Road pavement thickness and construction depth optimization using treated and untreated artificially-synthesized expansive road subgrade materials with varying plasticity index (2022)
Journal Article

Road pavement thickness and their depth of construction take a chunk of the overall cost of road construction. This has called for a need for reduced road pavement thickness by improving the engineering properties of subgrade such as the California b... Read More about Road pavement thickness and construction depth optimization using treated and untreated artificially-synthesized expansive road subgrade materials with varying plasticity index.

Geopolymers as alternative sustainable binders for stabilisation of clays - A Review (2021)
Journal Article

The need to transit to greener options in soil stabilisation has revamped research on the use of industrial and agricultural by-products in order to cut down on the current carbon footprint from the use of ordinary Portland cement (OPC) and lime rela... Read More about Geopolymers as alternative sustainable binders for stabilisation of clays - A Review.

Multiclass stand-alone and ensemble machine learning algorithms utilised to classify soils based on their physico-chemical characteristics (2021)
Journal Article

This study has provided an approach to classify soil using machine learning. Multiclass elements of stand-alone machine learning algorithms (i.e. logistic regression (LR) and artificial neural network (ANN)), decision tree ensembles (i.e. decision fo... Read More about Multiclass stand-alone and ensemble machine learning algorithms utilised to classify soils based on their physico-chemical characteristics.

Experimental study on early age characteristics of lime-GGBS-treated gypseous clays under wet-dry cycles (2021)
Journal Article

Gypseous soils are capable of presenting ground construction challenges to civil and geotechnical engineers due to their unpredictable deformation characteristics. These undesirable responses are sometimes caused by environmental changes in moisture... Read More about Experimental study on early age characteristics of lime-GGBS-treated gypseous clays under wet-dry cycles.

Enhancing the engineering properties of subgrade materials using processed waste: A review (2021)
Journal Article

Subgrade materials refer to the original ground underneath a road pavement, when these materials are made up of expansive soil it is referred to as expansive subgrade. Sometimes, these materials do not have sufficient capacity to support the weight o... Read More about Enhancing the engineering properties of subgrade materials using processed waste: A review.

Improved prediction of clay soil expansion using machine learning algorithms and meta-heuristic dichotomous ensemble classifiers (2021)
Journal Article

Soil swelling-related disaster is considered as one of the most devastating geo-hazards in modern history. Hence, proper determination of a soil's ability to expand is very vital for achieving a secure and safe ground for infrastructures. Accordingly... Read More about Improved prediction of clay soil expansion using machine learning algorithms and meta-heuristic dichotomous ensemble classifiers.

Results of application of artificial neural networks in predicting geo-mechanical properties of stabilised clays - A Review (2021)
Journal Article

This study presents a literature review on the use of artificial neural networks in the prediction of geo-mechanical properties of stabilised clays. In this paper, the application of ANN in ge-otechnical analysis of clay stabilised with cement, lime,... Read More about Results of application of artificial neural networks in predicting geo-mechanical properties of stabilised clays - A Review.

Understanding the performance of expansive subgrade materials treated with non-traditional stabilisers: A review (2021)
Journal Article

13 Expansive soils are problematic soils which pose a risk to the safety of civil engineering 14 structures. These soils can be treated by compaction or by adding additives to the soil. 15 Where the strength and properties of expansive soil cannot be... Read More about Understanding the performance of expansive subgrade materials treated with non-traditional stabilisers: A review.

Machine learning regression and classification algorithms utilised for strength prediction of OPC/by-product materials improved soils (2021)
Journal Article

In this study, stand-alone machine (ML) models (Bayesian regressor (BLR), least square linear regressor (REG), artificial neural networks (ANN), and logistic regression (LR)), tree-ensemble ML models (boosted decision tree (BDT), random decision fore... Read More about Machine learning regression and classification algorithms utilised for strength prediction of OPC/by-product materials improved soils.

Consistency and mechanical properties of sustainable concrete blended with brick dust waste cementitious materials (2021)
Journal Article

The reuse of waste materials in civil engineering projects has become the topic for many researchers due to their economic and environmental benefits. In this study, brick dust waste (BDW) derived from cutting of masonry bricks and demolition waste w... Read More about Consistency and mechanical properties of sustainable concrete blended with brick dust waste cementitious materials.

Experimental study on the use of RoadCem blended with by-product cementitious materials for stabilisation of clay soils (2021)
Journal Article

This work presents an experimental study on the physical, mechanical and microstructural characteristics of two clay soils treated with by-product materials (GGBS and PFA) blended with a nano technology-based additive called RC (RC). The soils were i... Read More about Experimental study on the use of RoadCem blended with by-product cementitious materials for stabilisation of clay soils.

Microstructure and physical-mechanical characteristics of treated kaolin-bentonite mixture for application in compacted liner systems (2021)
Journal Article

Treated bentonite-rich soils used as liner materials in landfills may provide an effective solution to the problems of increased void ratios upon swelling at reduced suction as well as desiccation cracking when suction is increased during desaturatio... Read More about Microstructure and physical-mechanical characteristics of treated kaolin-bentonite mixture for application in compacted liner systems.

Appropriate use of lime in the study of the physicochemical behaviour of stabilised lateritic soil under continuous water ingress (2020)
Journal Article

Licensee MDPI, Basel, Switzerland. Lime stabilisation is one of the traditional methods of improving the engineering properties of lateritic soils for use as subgrade and foundation materials for the construction of road pavements and highway embankm... Read More about Appropriate use of lime in the study of the physicochemical behaviour of stabilised lateritic soil under continuous water ingress.

Incorporation of a nanotechnology-based product in cementitious binders for sustainable mitigation of sulphate-induced heaving of stabilised soils (2020)
Journal Article

Sulphate-induced heaving in soils is a common problem caused mostly by the use of calcium-based binders in the stabilisation of sulphate-bearing soils. Sulphate-induced heaving is attributed to precipitation and growth of ettringite minerals in a hig... Read More about Incorporation of a nanotechnology-based product in cementitious binders for sustainable mitigation of sulphate-induced heaving of stabilised soils.

An overview of soil–water characteristic curves of stabilised soils and their influential factors (2020)
Journal Article

Since unsaturated soil conditions are normally experienced above the groundwater table, most treated or stabilised soils for roadworks, earth dams’ embankments, landfill sites, hydraulic barriers etc. could be regarded as existing in this region. The... Read More about An overview of soil–water characteristic curves of stabilised soils and their influential factors.

Incorporation of a nanotechnology-based additive in cementitious products for clay stabilisation (2020)
Journal Article

The mechanical performances and water retention characteristics of clays, stabilised by partial substitution of cement with by-products and inclusion of a nanotechnology-based additive called RoadCem (RC), are studied in this research. The unconfined... Read More about Incorporation of a nanotechnology-based additive in cementitious products for clay stabilisation.

Mechanical properties and microstructure of fibre-reinforced clay blended with by-product cementitious materials (2020)
Journal Article

Clayey soils endure adverse changes in strength and volume due to seasonal changes in moisture content and temperature. It has been well recognised that high cement content has been successfully employed in improving the mechanical properties of clay... Read More about Mechanical properties and microstructure of fibre-reinforced clay blended with by-product cementitious materials.

Performance of clay stabilized by cementitious materials and inclusion of zeolite/alkaline metals-based additive (2020)
Journal Article

RoadCem (RC) is a by-product additive produced based on nanotechnology and comprises of synthetic zeolites and alkali earth metals as some of its components. The geotechnical properties of a soil stabilized by adding RC to partly replaced cementitiou... Read More about Performance of clay stabilized by cementitious materials and inclusion of zeolite/alkaline metals-based additive.

Swell and microstructural characteristics of high-plasticity clay blended with cement (2019)
Journal Article

This study presents the effect of high plasticity on swell potential, swelling pressure and micro structural characteristics of kaolinite-bentonite mixed clays. Five different combining ratios of kaolinite bentonite mixture of 100:0, 90:10, 75:25, 50... Read More about Swell and microstructural characteristics of high-plasticity clay blended with cement.

Effect of organic matter on swell and undrained shear strength of treated soils (2019)
Journal Article

This paper presents a laboratory and statistical study on swell and undrained shear strength of cemented organic clays blended with eco-friendly (by-product) cementitious materials such as ground granulated blast slag (GGBS) and cement kiln dust (CKD... Read More about Effect of organic matter on swell and undrained shear strength of treated soils.

Numerical investigation of tension reinforcement lap length of eurocode 2 using a four-point beam loading system (2019)
Journal Article

© 2019 Latin American Journal of Solids and Structures. All rights reserved. This report presents a computational research on Eurocode 2 (EC2) tension lap lengths (lo) design in a normally reinforced concrete beam, using ANSYS Workbench simulation so... Read More about Numerical investigation of tension reinforcement lap length of eurocode 2 using a four-point beam loading system.

Dynamic analysis of Footbridge to Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt) (2019)
Journal Article

This research project presents a dynamic structural analysis of footbridges as per Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt). The footbridge was simulated using a commercial finite element software; Midas FEA. The crowd-fo... Read More about Dynamic analysis of Footbridge to Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt).

Development of improved models for estimation of bursting stresses in elements under high-concentrated load (2018)
Journal Article

© 2019, Brazilian Association of Computational Mechanics. All rights reserved. In precast concrete segmental tunnels, radial and circumferential joints are often the most highly stressed parts and it is therefore important to use appropriate equation... Read More about Development of improved models for estimation of bursting stresses in elements under high-concentrated load.

Effect of intrinsic microscopic properties and suction on swell characteristics of compacted expansive clays (2018)
Journal Article

© 2018 Elsevier Ltd The complex swelling mechanism in expansive clays during moisture ingress can be succinctly explained by an examination of their core mineralogy, microfabric, grain size and suction response. This note has attempted to investigate... Read More about Effect of intrinsic microscopic properties and suction on swell characteristics of compacted expansive clays.

Structural performance of a modified shear-head assembly for edge steel column embedded in reinforced concrete slab (2018)
Journal Article

© 2018 by the authors; licensee Growing Science, Canada. This paper presents a study on the structural performance of a modified shear-head assembly for edge steel column embedded in reinforced concrete slab. The structural performance was investigat... Read More about Structural performance of a modified shear-head assembly for edge steel column embedded in reinforced concrete slab.

Strength and Hydraulic Conductivity of Cement and By -Product Cementitious Materials Improved Soil (2018)
Journal Article

This paper presents an experimental investigation on strength and hydraulic conductivity of a fine grained soil mixed with cement, Pulverised Fly Ash and Ground Granulated Blast Slag. Strength and permeability are important properties that defines th... Read More about Strength and Hydraulic Conductivity of Cement and By -Product Cementitious Materials Improved Soil.

Non-Linear Analysis of Precast Concrete Segment Joints under High Compressive Loads (2018)
Journal Article

When a precast concrete tunnel lining is loaded, the joints rotate as the lining deforms leading to varying contact lengths. This paper presents a numerical study on a precast concrete segment joint subjected to a high compressive loading, using nonl... Read More about Non-Linear Analysis of Precast Concrete Segment Joints under High Compressive Loads.

Investigation of intrinsic de-bonding in bonded concrete overlays: Material characterisation and numerical study (2018)
Journal Article

© 2018 Growing Science Ltd. All rights reserved. This study investigates the evolution of intrinsic interfacial de-bonding of Roller Compacted Steel Fibre Reinforced Polymer Modified Concrete (RC-SFR-PMC) bonded on substrate Ordinary Portland Cement... Read More about Investigation of intrinsic de-bonding in bonded concrete overlays: Material characterisation and numerical study.

Development of strength models for prediction of unconfined compressive strength of cement/byproduct material improved soils (2017)
Journal Article

© 2017 ASTM International. All rights reserved. This paper presents the possible inclusion of pulverized fuel ash (PFA) and ground granulated blast slag (GGBS) in cement deep soil mixing for enhancement of unconfined compressive strength (UCS) of wea... Read More about Development of strength models for prediction of unconfined compressive strength of cement/byproduct material improved soils.

Investigative Modelling of Behaviour of Expansive Soils Improved using Soil Mixing Technique (2017)
Journal Article

This paper presents an investigative modelling of the behaviour of expansive soils improved using the soil mixing technique. In this study, the effect of cement and the inclusion of cementitious by-product materials such as Pulverised Fuel Ash (PFA)... Read More about Investigative Modelling of Behaviour of Expansive Soils Improved using Soil Mixing Technique.

Mechanism of hydraulic fracturing in cohesive zone of embankment dam cores - A review (2017)
Journal Article

Estimation of critica fracturing in fill dam experimental studies fracturing, model tests, numerical simulations and field tests methodologies. Since hydraulic fracturing is m been given much consideration can be trusted and is fixed cohesive zone of... Read More about Mechanism of hydraulic fracturing in cohesive zone of embankment dam cores - A review.

Evaluation of equivalent delamination driving coefficient in bonded concrete overlays (2017)
Journal Article

This study investigates failure due to interfacial delamination in a bonded concrete overlay system comprising Polymer Modifies Roller Compacted Concrete (PMRCC) overlay and substrate Ordinary Portland Concrete (OPC). Optimum overlay mix was designed... Read More about Evaluation of equivalent delamination driving coefficient in bonded concrete overlays.

Effect of overlap distance and chord angle on performance of overlapping soil-cement columns (2017)
Journal Article

The stress distribution in deep mixing improved columns is affected by cement content and in-situ soil properties of the surrounding soil. Group of cement improved soil column can be overlapped to form a shear wall which can support side slopes of em... Read More about Effect of overlap distance and chord angle on performance of overlapping soil-cement columns.

Effect of cement and by-product material inclusion on plasticity of deep mixing improved soils (2016)
Journal Article

Understanding the performance of deep mixed column improved soils - A review (2015)
Journal Article

The essence of ground improvement is to enhance the engineering properties of weak soils to provide stability and sufficient bearing capacity for construction and other engineering purposes. Deep soil mixing is one method that has been widely employe... Read More about Understanding the performance of deep mixed column improved soils - A review.