Transforming Waste into Sustainable Infrastructure
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CBA | Sustainable Engineering Initiative

Building Africa's Sustainable Future

Circular Build Africa (CBA) is transforming waste into sustainable infrastructure through engineering innovation, research, circular economy solutions, and strategic partnerships across Africa.

Circular Build Africa

Our Impact

Measuring our contribution towards a circular and sustainable Africa.

50+

Tons of Waste Recycled

5

Research Projects

10+

Strategic Partners

1000+

People to Impact by 2030

WHAT WE DO

Our Focus Areas

Circular Build Africa works across research, engineering, innovation and partnerships to accelerate sustainable infrastructure across Africa.

Circular Economy

Promoting sustainable waste management, recycling, and resource efficiency.

Sustainable Construction

Developing affordable eco-friendly construction materials from recycled resources.

Climate Action

Supporting resilient cities through low-carbon engineering solutions.

Research & Innovation

Conducting applied engineering research that addresses Africa's infrastructure challenges.

Capacity Building

Empowering students, engineers and communities through training and knowledge sharing.

Strategic Partnerships

Collaborating with universities, governments, NGOs and the private sector.

OUR PROJECTS

Featured Projects

Innovative engineering projects driving the circular economy and sustainable infrastructure across Africa.

Completed
EcoBuild Blocks
Research Project

EcoBuild Blocks

Plastic waste transformed into sustainable building blocks.

Uganda 2026
Explore Project
Completed
Porcelain Tile Aggregate Research
Research

Porcelain Tile Aggregate Concrete

Experimental research investigating the use of recycled porcelain tile waste as coarse aggregate in sustainable concrete production.

Author Name

Research by

Ahmed Mohammed Ishag Bhar Final Year Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Completed
Water Filter
Prototype

Natural Water Filter

Low-cost filtration system using local natural materials.

Ahmed Mohammed Ishag Bhar

Project by

Ahmed Mohammed Ishag Bhar Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2025
Explore Project
Completed
Second-hand clothing fibres used for mortar research
Research

Textile Fibre Mortar

Examining the effect of blended second-hand clothing fibres on the performance, durability, and sustainability of cement mortar for environmentally responsible construction.

Musadag Elbadawi Adam

Research by

Musadag Elbadawi AdamInternational University of East Africa
Uganda 2026
Explore Project
Research Project
Groundwater treatment research
Water Research

Groundwater Iron Reduction

Research investigating the reduction of iron in groundwater using powdered activated carbon (PAC) and chlorination for improved water quality.

Ahmed Mohammed Ishag Bhar

Research by

Ahmed Mohammed Ishag Bhar Final Year Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Research Project
Crushed clay roof tiles used as partial replacement of coarse aggregates
Sustainable Construction

Crushed Clay Roof Tiles in Concrete

Investigating the influence of crushed clay roof tiles as a partial replacement of natural coarse aggregates on the performance of concrete.

Santo Delfino Abbas Alex

Research by

Santo Delfino Abbas Alex Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Research Project
Crumb rubber used as partial replacement of coarse aggregates
Sustainable Concrete

Crumb Rubber Lightweight Concrete

Evaluating the effect of partial replacement of coarse aggregates with crumb rubber for lightweight concrete.

Ahmed Mohamed Yusuf

Research by

Ahmed Mohamed Yusuf Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Completed
Concrete research using powdered gum Arabic additive
Concrete Research

Powdered Gum Arabic as a Concrete Additive

Investigating the effect of powdered gum Arabic as an additive on the performance of concrete.

Sahar Mohamed Elnour

Research by

Sahar Mohamed Elnour Civil Engineering Researcher
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Research Project
Water turbidity reduction using tamarind seed powder and hardwood ash
Water Research

Turbidity Reduction Using Tamarind Seed Powder

Investigating the reduction of turbidity in water using tamarind seed powder and hardwood ash as locally available treatment materials.

Mabior Ayuel Lukuach Diing

Research by

Mabior Ayuel Lukuach Diing Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Completed
Demolished concrete waste used as coarse aggregate replacement
Construction Waste

Demolished Concrete Waste in Concrete

Investigating the utilization of demolished concrete waste as a partial replacement of natural coarse aggregates in concrete production.

Abdinasir Abdullahi Salah

Research by

Abdinasir Abdullahi Salah Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Research Project
Basalt rock powder used as partial cement replacement
Sustainable Concrete

Basalt Rock Powder as Cement Replacement

Investigating the effects of partially replacing cement with basalt rock powder on the performance of concrete.

Abdulhafiz Hassan Omar

Research by

Abdulhafiz Hassan Omar Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Research Project
Oil palm shell as partial replacement of coarse aggregate
Sustainable Concrete

Oil Palm Shell in Concrete

Investigating the use of oil palm shell as a partial replacement of coarse aggregate in concrete.

Abdifatah Hussein

Research by

Abdifatah Hussein Civil Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Research Project
Waste clay bricks as alternative fine aggregate in concrete
Construction Waste

Waste Clay Bricks as Fine Aggregate

Investigating waste clay bricks as a sustainable alternative to natural fine aggregate in concrete.

Kuol James

Research by

Kuol James Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Completed
Eggshell powder and charcoal ash used as cement replacements
Materials Engineering

Eggshell Powder & Charcoal Ash in Concrete

Experimental study investigating the use of eggshell powder and charcoal ash as partial replacements of cement in concrete.

David

Research by

David Engineering Student
International University of East Africa (IUEA)
Uganda 2026
Explore Project
Research Project
Groundwater iron reduction using granular activated carbon
Water & WASH

Groundwater Iron Reduction Using Granular Activated Carbon

Investigating the use of granular activated carbon (GAC) for reducing iron concentrations in groundwater and improving water quality.

Abu Kasim Abdullahi

Research by

Abu Kasim Abdullahi International University of East Africa (IUEA)
Water Research Water Treatment
Explore Project
PARTNERSHIPS

Building Partnerships Across Africa

We collaborate with universities, research institutions, governments, NGOs, industry, and communities to accelerate sustainable engineering solutions.

Circular Build Africa
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OUR INITIATIVES

Driving Africa's Circular Future

Circular Build Africa develops long-term initiatives that combine engineering, research, sustainability, and community development to build a greener Africa.

Circular Materials Initiative

Developing innovative sustainable construction materials using recycled plastic, porcelain waste, textile fibres and other circular resources.

Explore Initiative

Clean Water Initiative

Designing affordable water filtration systems and improving access to safe water for vulnerable communities.

Explore Initiative

GIS & Smart Cities

Applying GIS, remote sensing and spatial analysis to improve infrastructure planning and sustainable cities.

Explore Initiative

CBA Academy

Providing engineering training, research skills, BIM, AutoCAD, Revit and GIS education.

Explore Initiative

Research & Innovation Lab

Supporting engineering research, laboratory testing, prototypes and innovative construction technologies.

Explore Initiative

Circular Communities

Empowering youth, women and local communities through circular economy education and green entrepreneurship.

Explore Initiative
GROW WITH CBA

Opportunities & Events Hub

Discover scholarships, internships, fellowships, competitions, engineering training, conferences and sustainability events from Africa and around the world.

Scholarships

Master's, PhD and professional scholarship opportunities in engineering and sustainability.

Explore

Internships

Industrial training and internship opportunities for engineering students.

Explore

GIS Training

GIS, Remote Sensing and Smart Cities training programmes.

Explore

Conferences

COP, engineering conferences, climate summits and workshops.

Explore

Innovation Challenges

Innovation competitions, hackathons and engineering awards.

Explore

Volunteer With CBA

Join our growing community of researchers, engineers and volunteers.

Join Us
LATEST UPDATES

News & Opportunities

Stay informed about our latest projects, opportunities, events, fellowships and engineering initiatives.

NEWS

Circular Build Africa Officially Launches

Circular Build Africa begins its mission to transform waste into sustainable infrastructure across Africa.

August 2026 Read More
OPPORTUNITY

GIS Training Program

Join our upcoming GIS training designed for students, engineers and young professionals.

Coming Soon Apply Now
EVENT

COP & Sustainability Events

Discover upcoming climate conferences, engineering events and sustainability forums.

Upcoming View Events