The 2023 IPCC AR6 Synthesis Report underscored that the pace and scale of what has been done so far, and current plans are insufficient to tackle climate change. We are in the Anthropocene, experiencing more frequent and more intense heatwaves, cyclones, hurricanes flooding and other weather extremes which increase existing human health and ecosystems risks. These risks intersect with impacts...
Building with concrete contributes significantly to climate change. One way to directly minimise the carbon footprint is to use so-called Supplementary Cementitious Materials (SCMs), which can replace ordinary Portland cement to a large extent and at the same time contribute positively to the binder properties. Currently, mainly binary and ternary binders are used, which, in addition to...
The research and development project aimed to improve the quality of earth based habitats through three (03) interconnected approaches: material, architecture, and socio-anthropological perception, in the context of Burkina Faso. The material approach improved the engineering properties and durability performance of compressed earth brick (CEB) stabilized with agro industrial by products, such...
This study assesses the performance of compound cement in binary system containing clinker (C) partially substituted by blast furnace slag (B), on the one hand, and in ternary system containing clinker (C) partially substituted by calcined clay of metakaolin (M) and by blast furnace slag (B), on the other hand. The slag was used to substitute the clinker up to 25%. The use of slag in...
Composites made up of polymer matrix and natural fibres have gained extensive attention due to their strength and safety issues. Sisal fibres, among others, have become viable reinforcing materials on the polymer matrix because of its resistance to deterioration in saltwater, affinity for certain dyestuffs, durability and strength. In this work, sisal fibres from three harvest groups were...
Analysis of the quality of steel for reinforced concrete structures in Burkina Faso
DJOUBISSIE DENOUWE DECROLY 1, SORE SEICK OMAR 2, NSHIMIYIMANA PHILBERT 1, KAMGUIA KEMEGNE ARIANNE SAMUÉLA 1, MESSAN ADAMAH 1
1 Laboratoire Eco-Matériaux et Habitats Durables (LEMHaD), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), Ouagadougou, Burkina Faso
2 Département Génie Civil...
Borassus palm or aethiopium palmyra is a palm species tree, widely spread in sub-Saharan Africa but its fruits don’t have any economic value therefore considered as waste. Natural borassus fibers were extracted from the fruits. The extraction technique was manual and didn’t require the use of any chemical agent to validate the eco-friendliness of the extracted fibers. Sorption and desorption...
With increasing concerns about environmental degradation, climate change, and resource depletion, there is a push towards adopting more sustainable technologies. Mycelium composites are emerging as a promising green solution for the construction sector and beyond, holding potential for Africa.[1] Mycelium composites are a class of biobased material made from agricultural organic residues and...
Southern Africa is increasingly recognized as a climate change hotspot, with projected warming and drying trends worsening the existing stresses in this naturally warm, dry, and water-scarce region. Concrete production is a major contributor to global carbon emissions, accounting for 8 percent of the total, with 90 percent of these emissions stemming from the production of clinker, the primary...
Concerns about climate change and greenhouse gas emissions from the cement industry have prompted the promotion of green and sustainable construction such as stabilized earth construction. To this end, researchers have developed a technology for stabilizing compressed earth blocks (CEBs) using a geopolymer binder to reduce environmental pollution. Unfortunately, this technique, although more...
The comparison of the effect of UV-radiated and non-radiated Helichrysum kraussii (H. kraussii) extracts was studied for mild steel corrosion in 1.0 M H2SO4 at 30-60℃ using Liquid chromatography-mass spectrometry (LCMS), gravimetric weight loss analysis, electrochemical analysis and Fourier Transform Infrared spectroscopy (FTIR). The LCMS confirmed the trans-to-cis shift geometrical...
Liquefaction-induced permanent horizontal ground deformations, known as lateral spreading, continue to threaten civil infrastructure in earthquake-prone regions. Despite recent advances, conventional predictive models of lateral spreading still contain significant uncertainties, with errors ranging from 50% to 200%. A major source of this variability stems from the lack of direct incorporation...
Utilization of Bio-Based By-Products for Low Carbon Concrete in a Sustainable Circular Economy
KABIBI KAMASHANJU1, WOLFRAM SCHMIDT1
1Bundesanstalt für Materialforschung und -prüfung, Division 7.4, Berlin, Germany
Wolfram Schmidt: wolfram.schmidt@bam.de
Keywords: Bio-based materials, polysaccharides, admixtures, circular economy
Theme: Materials for CONSTRUCTION/BUILDING...
This study assessed glass-cladding and bioclimatic design application in Nigerian buildings towards enhancing energy efficiency and occupancy level. Glass-cladding, known for its aesthetic appeal and natural lighting benefits, was juxtaposed with bioclimatic design principles that prioritize environmental harmony and energy conservation. Data were collected through field surveys, energy...
The efficacy of anacardium occidentale (cashew leaf) extract in mild steel corrosion failure attenuation in Salt Water and Marine environment is presented. The thrust was to find out how successfully or otherwise, the unique active ingredient in cashew leaf called Anacardium occidentale reduced mild steel corrosion failure in marine environments. Fresh lush green Cashew leaves were harvested...
For a long time in Burkina Faso, natural laterites had the geotechnical properties required to be used as layer base in road construction. Nowadays, after their deterioration and also the high traffic, they no longer meet these needs, requiring the use of conventional mineral binders expensive currently to stabilize them. The objective of this study is to use a mixture of local materials (tuff...
Clinker reduction is the most efficient de-carbonization pathway for the cement industry. Kaolinitic clays are widely available worldwide and have shown great potential as a Supplementary Cementitious Material (SCM) when calcined at 800-850°C, enhancing their reactivity. The key challenge facing sustainable cement production is the reduction of the clinker content. Advances in Limestone...
The mounting challenge of food waste disposal in African urban centers poses a critical environmental dilemma while revealing opportunities for transformative innovation. This research upcycles Nairobi’s food processing side streams into high-value composite materials contributing to sustainable development goals and circular economy principles.
Composite boards are fabricated by integrating...
Aluminum alloys, such as AA6063, are renowned for their excellent corrosion resistance; however, they face limitations in construction and building applications owing to their relatively low mechanical strength. Beans, an essential source of proteins, generate substantial pod residues that contribute to environmental pollution. Although different types of agro-waste residues have been explored...
This study investigated the possibility of replacing cement with various amounts of Cow-bone Ash while considering cost lowering for construction materials. The best quantity to be replaced for optimum mechanical properties was deduced. The result can enhance environmental sustainability by converting the waste agro Cow-Bone waste to wealth.
The dispersion of silica fume (SF) plays a crucial role in low water-to-binder concrete mixtures such as High and Ultra High-performance concretes (HPC and UHPC). At high concentrations (>10 wt%), dispersing SF can prove to be extremely challenging with conventional super-plasticizers. In this work, we evaluate the production of UHPC with SF@PEG which are SF particles with a small layer of...
Techno-economic analysis of converting existing buildings to green energy buildings in Kenya.
Presenter: Sharon Wanjiru Kibera (SCT-356-012/2021)
Programme: MSc. in Renewable Energy Technology
Abstract
The demand for sustainable, cost-effective buildings is growing worldwide, particularly in regions like Kenya that face significant energy challenges and environmental concerns. Green energy...
