Projects: Details for EP/N508962/1
Details for EP/N508962/1
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| Reference Number |
EP/N508962/1 |
| Title |
REcovery and uSe of Cement kIlN Dust as the alkali activator for Geopolymeric (Cementless)Concrete Building Blocks (RESCIND) |
| Status |
Completed |
| Energy Categories |
Not Energy Related 50%;
Other Power and Storage Technologies(Electric power conversion) 25%;
Other Cross-Cutting Technologies or Research(Environmental, social and economic impacts) 25%; |
| Research Types |
Basic and strategic applied research 100% |
| Science and Technology Fields |
PHYSICAL SCIENCES AND MATHEMATICS (Chemistry) 50%;
ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 50%; |
| UKERC Cross Cutting Characterisation |
Not Cross-cutting 50%;
Sociological economical and environmental impact of energy (Environmental dimensions) 50%; |
| Principal Investigator |
Professor M Soutsos
No email address given
Planning, Architecture and Civil Engineering
Queen's University Belfast
|
| Award Type |
Standard |
| Funding Source |
EPSRC |
| Start Date |
01 November 2015 |
| End Date |
30 April 2018 |
| Duration |
30 months |
| Total Grant Value |
£193,571 |
| Industrial Sectors |
Manufacturing; Construction |
| Region |
Northern Ireland |
| Programme |
Manufacturing : Manufacturing |
| Investigators |
Principal Investigator |
Professor M Soutsos , Planning, Architecture and Civil Engineering, Queen's University Belfast (99.999%) |
| Other Investigator |
Professor W Sha , Planning, Architecture and Civil Engineering, Queen's University Belfast (0.001%)
|
| Web Site |
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| Objectives |
|
| Abstract |
Cement Kiln Dust (CKD), known in the cement industry as "Flue Dust, Portland Cement", is a flue-gas by-productprecipitated from cement kilns during cement clinker production. CKD is a mixture of calcined and uncalcined lime. With thetransition in cement production to a greater use of waste-derived fuels, CKD contains a high concentration of salts and ishighly alkaline. Consequently it cannot be recycled in the cement production process or used in reinforced concrete withoutexpensive process refinements. CKD presents a significant waste disposal problem for the cement industry, with anestimate of 100,000 tonnes of material produced in the UK and 500,000 tonnes across the European Union. The use ofPulverised Fuel Ash (PFA) from coal fired power stations is well established as a building material, filler and as a concreteadditive/cement replacement. PFA's technological and environmental benefits for concrete are well established but in theUK in the order of 3M tonnes of PFA is still sent annually to landfill or lagooned on-site at the power plant.Geopolymer is an umbrella term which refers to a range of synthetic aluminosilicate polymeric materials, often moregenerically termed alkali-activated binders (AAB). Geopolymer materials can be produced from a range of natural andsynthetic pozzolanic solids, activated with alkaline solutions. Geopolymers can be used as "cement-free" binders to replacePortland-cement pastes in concrete and mortar products. Typical alkali activators are expensive and have a relatively highenvironmental footprint. The civil engineering research group at Queen's University Belfast (QUB) has demonstrated thepotential of CKD to act as the activator in a PFA or Ground-Granulated Blast furnace Slag (GGBS) based AAB. This opensthe route to "cementless" concrete products: i.e. the complete substitution of Portland cement. With the use of recycleddemolition aggregate the possibility of an "all-waste" concrete product is technically and economically feasible.Lagan Cement Products Ltd (LCP) is a producer of both cement and concrete products. It is in control of a CKD wastestream. LCP also operates a modern concrete block-making facility. Through RESCIND, LCP will develop a high-valuelow-carbon cementless concrete block with wide application that completely consumes the highly-alkali CKD waste streamalong with a high quantity of PFA or other ash waste stream. RESCIND will deliver mutual benefit to the cement and powerindustries, by processing and manipulating waste streams in-order to produce high-value end products. The exploitation of value from dual waste streams exhibits the best attributes of the circular economy |
| Publications |
(none)
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| Final Report |
(none)
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| Added to Database |
05/01/16 |
