Joseph Mwiti Marangu
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View article: Sustainability Potentials of the Precast Industry in Kenya
Sustainability Potentials of the Precast Industry in Kenya Open
Kenya is overly affected by the consequences of climate change and struggling to find ways to balance mitigation with the urgent need to meet the country’s infrastructure and housing needs. Traditional concreting methods, such as onsite mi…
View article: Durability of Ternary Blended Concrete Incorporating Rice Husk Ash and Calcined Clay
Durability of Ternary Blended Concrete Incorporating Rice Husk Ash and Calcined Clay Open
Research on the combined substitution of supplementary cementitious materials (SCMs) has already demonstrated that it might be one of the few viable options to produce low-carbon concrete at scale. This paper presents an experimental inves…
View article: Aloe Vera-Based Concrete Superplasticizer for Enhanced Consolidation with Limestone Calcined Clay Cement
Aloe Vera-Based Concrete Superplasticizer for Enhanced Consolidation with Limestone Calcined Clay Cement Open
Self-consolidating concrete (SCC) is renowned for its outstanding workability and ability to seamlessly flow into intricate structures with minimal vibrations, achieved through the incorporation of chemical admixtures. This study pioneers …
View article: Effects of Aloe Vera Mucilage as a Superplasticizer on Limestone Calcined Clay Self-Consolidating Concrete Performance
Effects of Aloe Vera Mucilage as a Superplasticizer on Limestone Calcined Clay Self-Consolidating Concrete Performance Open
Self-consolidating concrete (SCC) is highly workable concrete that flows under minimal vibrations into congested reinforcement and sophisticated formworks. The properties of SCC are achieved by incorporating chemical admixtures. In this st…
View article: Evaluation of Kunkur Fines for Utilization in the Production of Ternary Blended Cements
Evaluation of Kunkur Fines for Utilization in the Production of Ternary Blended Cements Open
Ternary blended cements, such as limestone calcined clay cement (LC3), represent a type of strategic binder for the mitigation of environmental impacts associated with cement production. These are estimated to reduce CO2 emissions by about…
View article: Review on Advances in Bio-based Admixtures for Concrete
Review on Advances in Bio-based Admixtures for Concrete Open
Bio-based admixtures (BBAs) are emerging as a promising class of additives for concrete, of- fering a more sustainable and environmentally friendly alternative to conventional chemical admixtures. Derived from various natural or biological…
View article: A Comprehensive Review on Methods, Agents and Durability Factors for Stabilization of Expansive Soils
A Comprehensive Review on Methods, Agents and Durability Factors for Stabilization of Expansive Soils Open
Expansive soils cover a huge portion of the total land area in the world. They absorb water and expand, then shrink when they dry out. The volume change exerts pressure on engineering structures causing deformations, cracks, and movement o…
View article: Evaluation of Kunkur Fines for Utilization in the Production of Ternary Blended Cements
Evaluation of Kunkur Fines for Utilization in the Production of Ternary Blended Cements Open
Ternary blended cements such as limestone calcined clay cement (LC3) represent a strategic binder type for the mitigation of environmental impact associated with cement production and are estimated to reduce CO2 emissions by about 40% comp…
View article: Five recommendations to accelerate sustainable solutions in cement and concrete through partnership
Five recommendations to accelerate sustainable solutions in cement and concrete through partnership Open
Though the technical knowledge to make cement and concrete more sustainable already exists, implementation of solutions lags behind the rate needed to mitigate climate change and meet the targets set by the Sustainable Development Goals. W…
View article: Supplementary Cementitious Materials in Building Blocks—Diagnosing Opportunities in Sub-Saharan Africa
Supplementary Cementitious Materials in Building Blocks—Diagnosing Opportunities in Sub-Saharan Africa Open
Sustainable building should at least be affordable and carbon neutral. Sub-Saharan Africa (SSA) is a region struggling with housing affordability. Residential buildings are often constructed using block-based materials. These are increasin…
View article: Mechanical Performance and Physico-Chemical Properties of Limestone Calcined Clay Cement (LC3) in Malawi
Mechanical Performance and Physico-Chemical Properties of Limestone Calcined Clay Cement (LC3) in Malawi Open
Malawi is one of the least-developed countries in Sub-Saharan Africa with disaster-prone housing infrastructure characterized by poor construction materials. Therefore, there is a need to provide resilient and cost-effective materials, suc…
View article: Effects of Alternate Wet and Dry Conditions on the Mechanical and Physical Performance of Limestone Calcined Clay Cement Mortars Immersed in Sodium Sulfate Media
Effects of Alternate Wet and Dry Conditions on the Mechanical and Physical Performance of Limestone Calcined Clay Cement Mortars Immersed in Sodium Sulfate Media Open
Sulfate attack in concrete structures significantly reduces their durability. This article reports the experimental findings on the effects of sodium sulfate on limestone calcined clay cement (LC3) in an alternate wet and dry media. The sa…
View article: Use of sensor based drip irrigation in improving irrigation water efficiency for vegetable crops Tharaka Nithi county
Use of sensor based drip irrigation in improving irrigation water efficiency for vegetable crops Tharaka Nithi county Open
Drip irrigation is a water saving technology recommendable for ASAL regions of Kenya that are water deficit. However, it is largely manually operated in Kenya, leading to variable irrigation water use efficiency (IWUE). This necessitates a…
View article: Adsorption of Heavy Metals in Contaminated Water Using Zeolite Derived from Agro-Wastes and Clays: A Review
Adsorption of Heavy Metals in Contaminated Water Using Zeolite Derived from Agro-Wastes and Clays: A Review Open
Due to climate change and anthropogenic activities such as agriculture, mining, and urbanization, water contamination has become a very real modern problem. Modern solutions such as activated carbon, reverse osmosis, and ultrafiltration, a…
View article: Review of Clay-Based Nanocomposites as Adsorbents for the Removal of Heavy Metals
Review of Clay-Based Nanocomposites as Adsorbents for the Removal of Heavy Metals Open
Due to rapid industrialization, urbanization, and surge in modern human activities, water contamination is a major threat to humanity globally. Contaminants ranging from organic compounds, dyes, to inorganic heavy metals have been of major…
View article: A Fresh View on Limestone Calcined Clay Cement (LC3) Pastes
A Fresh View on Limestone Calcined Clay Cement (LC3) Pastes Open
In this work, the factors controlling the fresh state properties of limestone calcined clay cement (LC3) are assessed and compared to Portland and binary cements, extending the scope of previous research by combining rheological measuremen…
View article: Physicochemical Properties of Hydrated Portland Cement Blended with Rice Husk Ash
Physicochemical Properties of Hydrated Portland Cement Blended with Rice Husk Ash Open
In the presence of significant quantities of carbon dioxide (CO2) and elevated temperatures in the atmosphere due to climate change, cement-based materials are susceptible to carbonation. Blended cements are more prone to carbonation attac…
View article: Prediction of Compressive Strength of Calcined Clay Based Cement Mortars Using Support Vector Machine and Artificial Neural Network Techniques
Prediction of Compressive Strength of Calcined Clay Based Cement Mortars Using Support Vector Machine and Artificial Neural Network Techniques Open
Prediction of strength in cement based materials is vital in construction industry as it forms the basis upon which important tasks can be performed such as the time for mortar form removal, project scheduling and quality control among oth…
View article: Physico-chemical properties of Kenyan made calcined Clay -Limestone cement (LC3)
Physico-chemical properties of Kenyan made calcined Clay -Limestone cement (LC3) Open
In Kenya fired clay bricks are mainly used as construction materials. However, vast quantities of these Fired Rejected Clay Bricks (FRCB) generated are rejected annually as a result of improper calcination or demolition of housing units ma…
View article: A Review on Pyroprocessing Techniques for Selected Wastes Used for Blended Cement Production Applications
A Review on Pyroprocessing Techniques for Selected Wastes Used for Blended Cement Production Applications Open
Pyroprocessing is an important stage in cement manufacturing. In this process, materials are subjected to high temperatures so as to cause a chemical or physical change. Its control improves efficiency in energy utilization and hence enhan…
View article: Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement
Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement Open
This paper presents the findings of an experimental investigation on optimizing pozzolanic activity of a blend of Rice Husks (RH), Spent Bleaching Earth (SBE) and Broken Bricks (BB) to form pozzolana that would have pozzolanic activity com…
View article: Chloride Diffusivity in Blended Cement Made from Selected Industrial and Agrowastes
Chloride Diffusivity in Blended Cement Made from Selected Industrial and Agrowastes Open
This paper reports study findings on the diffusivity of chloride ions in potential blended cement. The cement, abbreviated as PCDC, was made from blending ordinary Portland cement (OPC) with dried calcium carbide residue and an incinerated…
View article: Physicochemical Performance of Portland-Rice Husk Ash-Calcined Clay-Dried Acetylene Lime Sludge Cement in Sulphate and Chloride Media
Physicochemical Performance of Portland-Rice Husk Ash-Calcined Clay-Dried Acetylene Lime Sludge Cement in Sulphate and Chloride Media Open
This paper reports leach and/or intake of SO 4 2− , Cl − , Ca 2+ , Na + , and K + from and/or into cement mortar cubes made from a novel cementious material in naturally encountered environmental simulated media. The paper also reports cha…
View article: Effect of Sulphate and Chloride Ingress on Selected Cements Mortar Prisms Immersed in Seawater and Leather Industry Effluent
Effect of Sulphate and Chloride Ingress on Selected Cements Mortar Prisms Immersed in Seawater and Leather Industry Effluent Open
Cement structures are major capital investments globally. However, exposure of cement‐based materials to aggressive media such as chloride‐ and sulphate‐laden environments such as coastal areas affects their performance. Ordinary Portland …