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Cementitious Materials; Advanced Performance

Current project

KEYS - Knowledge Exchange for Young Scientists

KEYS symposia series is an initiative for young scientists from countries in Africa and from Germany to enhance their skills in innovative research in the field of cement and concrete construction technology. It targets young postgraduate and postdoctoral scientists and offers the unique opportunity to network with international high profile researchers and industry representatives. It also fosters networking of the young scientists with their peers in an international forum that promotes their role as future decision makers.

The overall objectives of the symposia series will aim at:

Funded by

1st Symposium: 8th – 12th June 2015, Dar es Salaam, Tanzania

Raw Materials, Quality Control and Maintenance of Cementitious Products

Host institution
University of Dar es Salaam

The symposium comprised scientific presentations, discussions, networking and workshops. It took place on three days with a 1-day excursion to a construction site. The excursion was managed by Bam International.

There were additional four workshop groups, each mentored by experienced scientists. Issues on the following topics were discussed: Enhanced gender equality in construction, Educational needs and improvement potentials, Bringing knowledge efficiently into practice, and Future strategies for the KEYS symposia. Each group presented their discussion items and results on the last day, followed by a public discussion with the keynote speakers in the panel. The results from these discussions were noted and will be made available to the public.

All pictures by the courtesy of OGS Studios für VolkswagenStiftung/2015

Proceedings for the symposium can be downloaded here.

All symposium presentations

Welcome Notes - Wolfram Schmidt

Future cements – Karen Scrivener

Parameters controlling superplasticizer cement interactions during the casting and hardening of cement based systems – Wolfram Schmidt

Quality control and quality management from cement to sandcrete – experiences from Dar es Salaam – Raine Isaksson

Performance-based durability design and specification – Mark Alexander

RILEM – Mark Alexander

Cementing our future through innovation: Novel approaches to enhancing the quality of concrete – Raissa Ferron

From lab-crete to real crete – Boudewijn Piscaer

Sustainable concrete made from recycled aggregates – John Makunza

Dry-stack and compressed stabilised earth-block construction: Exploring new frontiers in construction

Cassava Peel Ash: An emerging pozzolanic material – Kolawole Adisa Olonade

Compressive strength characteristics of bamboo leaf ash blended cement concrete – John Temitope Kolawole

Characterisation of low-silica carbonatitic lavas from E.Africa rift system as SCMs in Portland cement concrete – Appolo Buregyeya

Performance of ternary cementitious binder systems incorporating untreated and treated pozzolanic materials – Bartosz Bobkowski

Utilisation of gum acacia karoo as set-retarding water-reducing admixture in cement mortar and concrete at optimum dosage – Rose Mbugua

Determination of suitable additive to improve local Portland cement for offshore structures – Alice Titus

Properties of fresh self-compacting concrete containing slag – Kouider Djelloul Omar

Shotcrete – Maria Thumann

Use of rice husk ash for the replacement of soluble silica in the geopolymerization processes – Elie Kamseu

The structural behaviour of pozzolan-lime cement as a potential substitute to Portland cement in low-strength construction applications – Dans Nshekanabo Naturinda

Properties of FaL-G bricks – Stephano Inyasio

Earthern building materials: Hydraulic lime based grout for retrofitting and CEBS stabilised with geopolymer – Lorenzo Miccoli

Making durable concrete through inhibition by pozzolanic action – Catherine Mayowa Ikumapayi

Development of prediction models for the carbonation of concrete – Yunusa Alhassan

Durability characteristics of concrete containing sugarcane waste fiber ash (SWFA) – John Nyiro Mwero

The influence of concrete mix design on shear strength of reinforced concrete flat slabs – Farai Ada Shaba

Durability of locally-produced burnt clay bricks – Kwadwo Mensah-Darkwa

Influence of metakaolin on the performance of concrete – Mohammed Si-Ahmed

The effectiveness of recycled waste nylon in the partial replacement of fine aggregate in reinforced concrete slab – Rauf Olayiwola Hassan

Use of sugarcane baggase fibre as a soil reinforcement material – Vincent Oderah

Earthen panels: Quality control for an industrially prefabricated building component made of natural raw materials – Astrid Paul

2nd Symposium: June 2016, Accra, Ghana

Sustainable Cement and Concrete Construction – Improvement of Solid Waste Management

Host institution
University of Ghana

Keynote speakers

Prof. Aggrey Ambali (NEPAD, South Africa)
Prof. Arezki Tagnit-Hamou (University of Sherbrooke, Canada)
Dr. Charles Nmai (BASF, USA)
Mr. David Konadu (University of Ghana, Ghana)
Prof. Holmer Savastano Jr. (University of Sao Paulo, Brazil)
Mr. Joe Addo (Constructs LLC, Ghana)
Dr. Sofiane Amziane (Polytech Clermont-Ferrand, France)
Prof. Viktor Mechtcherine (Technical University Dresden, Germany)
Dr. William Peter Boshoff (Stellenbosch University, South Africa)
Dr. Dipl.-Ing. Wolfram Schmidt (BAM Bundesanstalt für Materialforschung und –prüfung, Germany)


Civil and Material Engineering graduates, postgraduates and young post-doctoral candidates affiliated in institutions in Africa or Germany

Funding criteria

Presentation of research work in the related thematic area (Download Application Form and email to

Return flight and full-board accommodation in Accra, Ghana (Available funding for 18 persons affiliated in Africa, and 4 persons affiliated in Germany only)

3rd Symposium: June 2017, Johannesburg, South Africa

Applicable Cement and Concrete Technology in Africa – International Cooperation, Innovation, Research and Capacity Building

Host institution
University of the Witwatersrand

Cementitious Materials



Nsesheye Susan Msinjili
Unter den Eichen 87
12205 Berlin
+49 30 8104-4543

Dr. Dipl.-Ing.
Wolfram Schmidt
Unter den Eichen 87
12205 Berlin
+49 30 8104-3210