Emmanuel Onche

• Doctor of Philosophy
• Lecturer at University of Abuja

The microstructural analysis of some reinforcement steel rods used for concrete reinforcement and their effect on the mechanical properties, and carbon equivalent values of the reinforcement steel rods have been studied. The work subjected the samples to test specimen preparation as required by standard specification for each test. Samples from fiv...

Investigation of the effects of SiC particles addition and thermal treatment on 90Al-10Cu alloy has been undertaken. The work produced 90Al-10Cu Alloy and further produced test castings to which particle additions of SiC were added in the order 0.5%SiC, 1%SiC, 2%SiC and 4%SiC to see the effects of a wider variation in particle addition. These addit...

This study investigates the compressive deformation and the effect of structural architecture on the compressive strength of bioprocessed mycelium biocomposites reinforced with laterite particles. In the mycelium blocks, lignocellulosic hemp hurds function as reinforcing and nutritional substrates. The mycelium acts as a supportive matrix, binding...

Low- and middle-income countries have tremendous potential for renewable energy production, including production of renewable carbon from locally prolific crops. In this work, bamboo endemic to West Africa (Bambusa vulgaris) was studied as a feedstock for the production of renewable sugars as the gateway to the local production of biofuels and bio-...

This article presents concepts for the design of bioinspired bamboo structures. The knowledge of deformation and failure mechanisms in bamboo structures is used to provide insights that can guide the design of bamboo structures that are subjected to compressive loading. The article is divided into six sections. An overview of the understanding of t...

In this work, mechanochemical pretreatment of Bambusa vulgaris is evaluated for waste‐free production of renewable sugars for subsequent fermentation. After a 60 min mechanochemical pretreatment followed by enzyme hydrolysis at 50 °C, 62% of the available carbohydrate can be recovered as fermentable sugars, primarily in the form of glucose and xylo...

The paper has investigated the effects of ramming on the mould properties of Yola natural sand. The work considered the variation of the number of rams with green compression strength, dry compression strength, green permeability and bulk density. The results showed that as the number of rams increase, the green compression also increases attaining...

The core properties of a newly developed core binder based on was assessed and compared with an imported binder system commonly used in the foundry. The work investigated the properties of the newly developed binder system along side with the properties of UFFA-BSA binder system, which is an imported binder system. The core mixtures were prepa the...

This paper presents the results of an experimental study of the fatigue and fracture behavior of Bambusa Vulgaris-Schrad bamboo. Mechanisms of crack initiation and growth are elucidated under monotonic and cyclic compressive failure or flexural loading. The microscopic studies of fatigue and fracture explore the effects of fiber/crack/ply orientati...

Foundry properties of upper River Benue sand were determined. Two categories of samples, A and B were prepared. Sample A contained 40g of H2O, 40g of bentonite in 1000g of silica sand while sample B contained 50g of H2O, 50g of bentonite in 1000g of silica sand. Seven specimens were each produced from both samples for various tests. The results sho...

This work was carried out to investigate the effect of rice husk and diatomite on the insulating properties of kaolin-clay firebrick. Five firebrick samples of different compositions were fired at 900°C, 1000°C, 1100°C, and 1200°C. Samples A-E are all insulating firebricks that can withstand temperatures ranging from 900°C to 1200°C since none of t...

In this work, different cutting fluid emulsions of about 10% concentration were developed from fixed oils and the performance of each of the developed cutting fluid was evaluated by a direct comparison with as purchased conventional cutting fluid (control sample), using the ability of each sample to effectively perform as coolant and lubricant duri...

The profitability of biodiesel production largely depends on the understanding of all the processes involved, especially the optimal values of the transesterification process parameters. In this work, the concentration level of catalyst, potassium hydroxide (KOH) that gives the optimal yield of biodiesel from tigernut (cyperus esculentus) oil was d...

In this work, the suitability of using Kaolin - Rice husk - plastic clay to produce insulating firebrick was experimentally investigated and the optimal ratio of these constituents determined. Ten brick samples of different compositions were fired at a temperature of 1200ºC. Three of the samples (samples 6, 7, and 8) crumbled during firing. The sur...