Martin AlugaThe Copperbelt University · Civil Engineering
Sonochemical processes optimisation in COMSOL Multiphysics...
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Citations since 2017
9 Research Items
The world and Kenya face a potential pandemic as the respiratory virus Coronavirus Disease 2019 (COVID-19) affects world populations. Nations have been forced to intervene and issue directions under executive orders to ensure the pandemic is contained. Kenya has reported 110 confirmed COVID-19 cases (as at 2nd April, 2020), three persons have succu...
Outcome based education (OBE) is critical in achieving the quality of engineering education and tertiary institution–industry collaboration is a vehicle for its actualization. When tertiary institution-industry collaboration decreases, it affects students, faculties and all the stakeholders, in terms of the major components of engineering education...
Food by its nature begins to spoil the moment it is harvested. Processing, preservation and packaging of foods is undertaken to prevent spoilage by microorganisms (bacteria, yeast, and moulds), as well as enzymes, temperature, and biochemical changes and impart a keeping quality or shelf-life to foods. Packaging being an integral part of the proces...
Cement and lime are widely used in soil stabilisation during road construction. However, the production, transportation and the stabilisation process using these materials leads to the release of significant amounts of Carbon Dioxide (CO2) and other greenhouse gases (GHGs). The cost of production of Portland cement, including the energy consumption...
Lignocellulosic bio-pozzolans (LBPs) are either produced by open-air incineration or as industrial byproducts and can be used for soil stabilization and in making concrete for road construction. The preparation of the LPBs involves the collection of raw materials/wastes, drying, incineration, grinding, and sieving to a required size before utilizat...
Approximately 20 to 30 million people globally engage in artisanal and small-scale mining (ASM); women make up 10-50% of small-scale miners. Women’s participation in ASM varies by country and the type of mineral/s, but women often undertake lower-paid, lower-value activities, and their engagement reduces as mechanisation increases. Thus, women’s ro...
The global rapid population growth is leading to accelerated food production thus accelerating the generation of agricultural wastes (AWs). Among the AWs management strategies is the valorisation of the AWs into useful products such as the production of silica nanoparticles (SNPs) which are useful in the road construction sector. Production of usef...
Currently, there are a lot of discussions on the production of sustainable cement for construction purposes, unlike the conventional ordinary Portland cement (OPC), as its production, transportation, and application contribute to the generation of greenhouse gases, hence, climate change. Consequently, limestone, the primary material used to produce...
Globally, approximately 1,906,000,000 tonnes of fresh fruits and vegetables are produced annually while Africa produces about 187,708,319 tonnes according to Food and Agriculture Organisation (FAO) data. Fruits and vegetable (FV) production is increasing in Africa due to demand globally. However, almost one-third of the produced FV is lost before b...
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We get powder diffraction pattern with diffractometers, but one of our primary concerns is to identify the contents (oxides) of our sample and quantify them.
Sometimes a PhD Thesis is very voluminous and detailed. Rather than being shelved in the research institution, Is it possible to turn the PhD thesis into a book? Has any researcher done a similar thing?
We know, some theses can be extensive researches so that it is not possible to present the findings in a single study. So, is it ethical to split the thesis into several articles and publish them in journals? Does it fall under salami publication?
Most journals require author(s) to pay for the article to be published. Looking unpredatory journals that publish Covid-19 related articles free of charge.
The purpose of the proposed research is to develop new techniques into improving the mechanical and durability properties of soil for infrastructure using soil mixed with Lignocellulosic Bio-Pozzolans (LBPs). The LBPs would replace typically used high cost and energy lime/cement. The project would involve laboratory scale mixing of LBPs employing sonication (applying sound energy to agitate particles in a sample), then geotechnical laboratory scale and possible field scale non-destructive (deflectometry) and destructive (including taking cores for laboratory tests) and comparing treated and untreated samples. The testing would involve routine geotechnical testing typical of a highway development project (CBR, density, grading, and strength).
An experimental program was conducted to compare the engineering properties of reclaimed asphalt waste (RAW) from rutted pavement sections with known Southern Africa Transport and Communications Commission (SATCC) standard specifications for asphalt mixes. The reason for choosing rutted sections is because, in Zambia, rutted sections are normally redone either with a new asphalt or concrete and the existing asphalt disposed of. The RAW can be re-used as surfacing in road construction and maintenance. This would save on the cost of constructing and maintaining roads and protecting the environment by reducing the demand for new aggregates and binding materials hence sustainable construction materials.
The adaptability of asphalt as a pavement construction material is incomparable. In general, it has been very reliable and durable over the centuries. These attributes have made asphalt the pavement construction material of choice all over the world. However, there is a vital need to construct more durable and sustainable flexible pavements, because, under certain exposure conditions, its durability can be compromised due to varying environmental factors i.e. temperature and moisture effects, effects of overloading, fuel spillage, and other chemical attack. Consequently, preventing premature deterioration and extending the service life of flexible pavements have become focal design issues, particularly, due to the current focus on sustainability within the road construction industry to reduce quarrying, mining and oil consumption. The service life of a flexible pavement can be enhanced through a firm understanding of the prevailing durability issues, proper design and construction, and the use of appropriate materials. In this paper, innovative hot mix asphalt modifier technologies that can be used to mitigate these durability issues and, thereby, increase the service life and sustainability of flexible pavements are discussed. This will go alongside the achievement of the number 9 of the sustainable development goals.