Technology offer for novel no Portland cementitious mix

Technology Offer for Novel No Portland Cementitious Mix

A Global Licensing Opportunity

1copyright©CoventryUniversity2017

1. Executive Summary

•  CoventryUniversity’sProf.EshmaielGanjianhasinventedanovelcemenAAousmix(alkali-acAvatednoPortlandcementbinder).Formedfromindustrialwasteandby-productsforpavingblocks

•  SolvestheindustrialproblemofreducingcarbonfootprintwithoutadverselyaffecAngthe

durabilityandotherphysicalcharacterisAcs.•  ThetradingarmoftheUniversitywouldliketooffer,theopportunitytotakeoutaglobal

licenceformanufactureandsale.


2.1 Novel No Portland Cementitious Mix: The Scenario

CONSTITUTION: •  A semi-dry cementitious material with no Portland cement •  Comprises alkali activated binder made of three different mineral waste and by-

products, fine and/or coarse aggregate mixture, fibre and mixing water, wherein the mixing water is mixed into 10~25% of the alkali activated binder with no cement.

•  The Alkali-activated cementless binding material comprises blast furnace slag,

Basic oxygen slag and alkaline inorganic waste materials. •  The ratio of the alkaline type of material to other slags is 0.035-0.1 by weight.


QUALITY: Paving blocks made of this novel mixture satisfies all the industry standard and specifications. The mix is of the same consistency and properties as the conventional paving block mixtures.


BPD

GGBSBOS

BPD

GGBSBOS

BPD

GGBSBOS

BPD10/BOS60/GGBS30 GGBS30/BOS35/BPD35 BOS50/GGBS40/BPD1014daysstrength:

3.7MPa

14daysstrength:

3.7MPa

14daysstrength:

3.9MPa


•  Basic Oxygen Slag (BOS): ground using laboratory ball mill, then sieved thorough 600 µm sieve.

•  Cement Kiln Dust (CKD): sieved thorough 600 µm sieve before use in.

•  By Pass Dust (BPD): in powder form without any lumps.

2.2 Novel No Portland Cementitious Mix: The Mechanism

Laboratory and factory compaction comparison Two mix designs of paving blocks used by a factory (percentage by weight) The compaction loading of 400KN was used in the laboratory for these mixes. The results indicate 28 days tensile strength of 3.2 and 2.6 MPa respectively for their GGBS and PFA mixes which includes the traditional 10 per cent cement by weight in them.


Colour Cement GGBS PFA 4mm-dust 6mmclean Sand

Lightgrey 10% 4% _ 53% 9% 24%

Darkgrey 10% _ 4% 53% 9% 24%

2.3 Novel No Portland Cementitious Mix: The Range


MixNo.GGBS

(%)

BPD

(%)

BOS

(%)

SF

(%)

4mm

(%)

6mm

(%)

Sand

(%)

TensileStrength

(MPa)

14days 28days

Mix1(14%binder) 5.6 1.4 7.0 - 53 9 24 1.0 1.1

Mix2(14%+Steelfibre) 5.6 1.4 7.0 1.5 53 9 24 2.5 3.1

Mix3(28%Binder) 11.2 2.8 14.0 - 44.4 7.5 20.1 1.1 1.39

Mix4(42%Binder) 16.8 4.2 21.0 - 35.7 6.1 16.2 1.35 1.95

Mix5(28%+SteelFibre) 11.2 2.8 14.0 1.5 44.4 7.5 20.1 3.4 3.7


MixSlip/Skidresistance(BPN)

Weatheringresistance

WaterabsorpAon(%)

Freeze/thawresistance(Kg/m2)

FactoryMixI(ControlMixI) 100 5.4

Allblocks<1.0

FactoryMixII(ControlMixII) 92 5.8

Mix1(BOS7/BPD1.4/GGBS5.6) 92 5.9

Mix2(BOS7/BPD1.4/GGBS5.6/SF1.5) 89 6.0

Mix3(BOS14/BPD2.8/GGBS11.2) 90 5.8

Mix4(BOS21/BPD4.2/GGBS16.8) 92 6.0

Mix5(BOS14/BPD2.8/GGBS11.2/SF1.5) 93 5.9

2.4 Novel no Portland Cementitious Mix: Technical Information

Durability test results

3. Customer Benefits ü  Improved green guide rating; BREEAM and Code for Sustainable Home (A++

rating). ü  Sales advantages (environmentally) ; EA , Specs. etc. ü  Improved public relations → increased market share. ü  Lower materials cost; BPD and BOS are landfilled and plenty. GGBS cheaper than

cement.

3.1 Customer Benefits SWOT AnalysisStrengths Ø  Carbon credits and carbon footprint reduction – 90% saving against OPC Ø  Can still use conventional mix parallel with the novel mix in the factory. Ø  Reduced depletion of the worlds natural resources. Ø  Enhanced resistance to weathering and degradation, longer service life. Ø  Reduction in the heat island effect – lighter colour .

Weaknesses Ø  Processing needed - although only grinding, sieving and blending may be required. Ø  More quality control of raw materials required as waste are variable in quality and

hence optimised mix design may change. This needs to be established before application.

Ø  May need added silos in the factory 9copyright©CoventryUniversity2017

Opportunities Ø  Can increase sales price due to green credentials. Ø  Increase sales – selling binder to other factories. Ø  Improve market position. Ø  Reduction in waste products from the construction industry

Threats Ø  Other competitors develop similar blends – Reducing cement content is

happening (to reduce carbon footprint) but there is no similar blend with ‘no Portland cement’ available.

Ø  Market may force use of alternative products for surfacing ,e.g. Asphaltic mix (very unlikely) or resin mix with green credentials (certainly would not be as cheap or abundantly available).

Ø  Waste producers may charge as their materials become valuable. But can replace new waste materials to get same quality of products.


4. Benefits to your company


• Enhanced engineering benefits, increased strength, degradation reduction, durability increase, Cl ion diffusion reduction, resistant to sulphates, use in marine environments. • Reduction of the absolute CO2 consumption in line with UK Government targets (34 per cent by 2020 and 80 per cent by 2050 from a 1990 baseline).

• Albedo effect and reflectance benefits in using lighter coloured products – in the UK every 1000 m2 of laid concrete will offset 6 tonnes/CO2 per annum

• Cost reduction in production, increased gross profit margins

• Product range can be increased, product differentiation

5. Contacts

•  Dr Brian More •  Director of IP Services •  CUE Limited

Techno Centre Coventry University Technology Park Puma Way Coventry CV1 2TT UK

•  Tel: +(44) 7974 984928 •  E-mail: [email protected]

•  Prof. Essie Ganjian •  Professor of Civil Engineering

Materials •  School of Energy, Construction and

Environment Faculty of Engineering, Environment & Computing Sir John Laing Building Coventry CV1 5FB UK

•  Tel: +(44) 24 77657625 •  E-mail: [email protected]


Technology offer for novel no Portland cementitious mix

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