Presentation UU UK 18-07-2016Content I. Introducing PowerCem Technologies. II. What is RoadCem and...
Transcript of Presentation UU UK 18-07-2016Content I. Introducing PowerCem Technologies. II. What is RoadCem and...
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ContentI. Introducing PowerCem Technologies.II. What is RoadCem and what does it do in a
stabilization.III. Ability to stabilize all soil types.IV. Design and Physical properties.V. Advantages and implementation of RoadCem.VI. Examples word-wide implementation.VII. Main construction differences Traditional vs
RoadCem in a nutshell.
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I. Introducing PowerCem Technologies
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Who we are:PowerCem Technologies BV specializes in the research anddevelopment of a range of products contributing tosustainable environmental applications, in particularcement-bound construction works.
• Founded in 1996.• Principal office in Moerdijk, The Netherlands.• Applied in 40 countries worldwide.• Distribution network supported by over 100 persons.
Our Mission:‘Protecting natural resources for the future’.
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PowerCem Technologies develops building materials, that enhance the use ofalternative secondary and polluted commodities to yield a high-end qualitybuilding material which is cost effective, sustainable and above allenvironmental friendly.
Financial benefit
DurableEcologicC2CSynergeticCO2 reduction
Testing the technology
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The PowerCem strategy:Participation in complex projects worldwide, as an invisible,but technical key component in cement-based materialsand constructions.
• Share global knowledge with local partners.• Teach engineering courses for design and application – to create
successful local projects.• Provide state of the art products.
Our vision:‘Sharing knowledge and providing products,worldwide to create a higher performance of
the infrastructure’.
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We are a global company
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ArmeniaAustraliaBelgiumBrazilBulgariaCameroonCanadaColombiaCongoCroatia
CuracaoCzech RepublicDominican RepublicEcuadorEgyptGermanyGreeceGuatemalaIraqIreland
MauritaniaMexicoMozambiqueNetherlandsNew ZealandPakistanPanamaParaguayPeruQatar
RussiaSaudi ArabiaSingaporeSouth AfricaSouth SudanSurinameTurkeyUnited KindomUSAVietnam
PowerCem all over the world
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- Proprietary chemical composition- Unique and patented- Quality control according ISO 9001/14001- Completely safe!
Literature: Material Safety Data SheetsPatent of PowerCem TechnologiesISO Certificate
PowerCem products
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Partners in scientific researchand construction engineering
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II. What is RoadCem® and what does itdo in a stabilization.
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- Ability to stabilize all types organic and inorganic soils
- Improvement strength parameters- Higher fatigue resistance- Supports high dynamic forces- Higher resistance against thermal cracking- High durability
Reduction of :- Overall costs- Primary materials usage- Construction traffic- Construction time- Low Maintenance- C2C
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Chemical
Physical
Implementation
Major benefit categories
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The PowerCem Products• Special composition of synthetic zeolites and alkali earth
metals.• Developed as additive to chemically modify cement
bound materials.
Nano Scale Using the RoadCem additive:
Literature: Nano indentation research on cement structures RADBOUD UNIVERSTY, NetherlandsEffects of using RoadCem, ULSTER UNIVERSITY (Ireland)
Chemical process creates acrystalline needle matrix thatform interlocking filaments(thread-like structures)between the material particles(soil & cement) resulting in aflexible structure.
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Traditional vs RoadCem®Nano technology!
Traditional Stabilization: RoadCem stabilization:
Cement glues the particlestogether “Brittle”!
Formation of strings, interlockingthe particles “Flexible”!
Literature: Nano indentation research on cement structures RADBOUD UNIVERSTY, NetherlandsEffects of using RoadCem, ULSTER UNIVERSITY (Ireland)
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III. Ability to stabilize all soil types
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The Effect of RoadCem Technology on the Soil
• Reduction of the surface pressure• Increase of the pH-value• Better penetration of the cement into the
particles
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Soil particle
Water barrier prevents cement interfere structureThe latent bound water forms a film around the soil particle
+ + +
--
-
--
-
-
-
-
+
+
++
+
Latent bounded water
--
- - - - - -
-
-
----
--
--
-
+ + +++
+ +
+
++
+ + + ++ + +
+
+
-
--
++
The Effect of RoadCem Technology on the Soil
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Soil particle
RoadCem reduces the surface pressure of the water whichreleases the latent bound water and increases the pH valueof the soil.
+ ++
-
-
--
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-
+
+ +
Adding PowerCem
The Effect of RoadCem Technology on the Soil
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Soil particle
Cement plus RoadCem causes a strong binding with the soilparticles which results in a strong and durable material.
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PowerCem + cement Binding cement Binding
Saturated strong bindingbetween cement and particle
Puncture binding spotsbetween cement andparticle
The Effect of RoadCem Technology on the Soil
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The effect of RoadCem on pozzolanic materials
• Traditional cement hydration with inorganic andorganic soils
• Cement hydration using the RoadCemTechnology with inorganic and organic soils
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H2O
H2O
H2O
H2O
cement particle
Traditional cement hydration
Water enters the cement particle and reacts to form calciumsilicate hydrate
2(CaO)3·SiO2 + 7H2O (CaO)3·2(SiO2)·4H2O + 3Ca(OH)2
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rigid calcium silicatehydrate (CSH) gel barrier
original cementparticle size
CSH gel is a barrier to in-depth hydration
unreactedcement
extendedmaterial
unreactedcement
Traditional cement hydration
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H2O + RoadCem
cement particle
Cement hydration using the RoadCem technologyWater and dissolved RoadCem migrate intothe cement particle and react
H2O + RoadCem
H2O + RoadCem
H2O + RoadCem
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unreactedcement
extendedmaterial
unreactedcement
original cementparticle size
CSH gel barrier significantly reduced: better in-depth hydration
Cement hydration using the RoadCem technology
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IV. Design and Physical properties
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Design: Road fail mechanisms
Deformation construction
Deformation base course (unbound)
Deformation sub base
Deformation subgrade
Crack-formation base course (bound)
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Sub-base
Traditional construction
- Excavation- Soil disposal- Requires large amounts of primary
materials- High transportation intensity- Longer construction time- Hindrance (traffic jams, noise and air
pollution in residential areas) due tobuilding traffic
- Higher cost (primary and secondary)
Wearing course
Base-Course
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RoadCem construction
- In-situ technique.- Able to stabilize all types of soil.- High load spreading.- Chances of reflective cracking are
reduced, due to flexural properties.
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StressesTraditional vs RoadCem construction
Sub-base
Wearing course
Base-Course
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Effect of higher dynamic elasticmodulus with RoadCem
Traditional RoadCem
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Increased fatigue resistance of in-situstabilization
Measuring flexural strength; 4 Point bending test
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4
Increased fatigue resistance of in-situstabilization
Literature: Cement-bound materials literature study TU Delft
1 F 2
400 mm/m500 mm/m
F
1
100
10000
1000000
100000000
0 200 400 600
4
32
1
3
300 mm/m
F 4 F
200 mm/m Fatigue line: Traditional sand cementstabilization
Fatigue line: RoadCem stabilization
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Increased fatigue resistance of in-situ stabilization
Literature: Cement-bound materials literature study TU Delft
• Higher stiffness > better spread of a load.• Higher dynamic modulus > thinner pavement.• Increased fatigue resistance > thinner pavement
Limited thickness with RoadCem achieves a longer lifetime.
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V. Advantages and implementation ofRoadcem.
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Advantages of using RoadCem- No Aggregates, 95% Less use of Bitumen- No Damage from Water (UNESCO Recommended)- All weather Roads with lifetimes designable from 10 to
100 years- Can Use Old Pavement Material, reclaimed asphalt, fly
ash, iron ore slag- Adaptive method for any geography, location, soil type
and weather
Traditional construction RoadCem construction
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Cradle to Cradle
Cradle to Cradle (C2C) design or regenerative design is a biomimetic approach to the design of products and systems.
Due to the fact that the pH is neutral, after the lifetime of the bounded material, which can be more than100 years, it can be crushed and left in the environment. This is particularly interesting when one needs tomake temporary access roads.
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V. Examples word-wide implementationshowing the versatility of the use of RoadCem
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In Holland a busy junction needed to be enlarged tocope with increasing volumes of traffic. This wasachieved without disrupting traffic by the fast solutionof stabilising the existing soils around the traffic islandwith RoadCem & cement and simply asphalting thestabilised soil base to form additional highway lanes.
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The low lying central plains of Mexico in the Tabasco region suffer annual flooding whichresults in the destruction of the traditional highway specification roads with washout ofstone base and asphalt.
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Since adopting RoadCem stabilised soils roads as standard specificationin this region, the only concern when the floods subside is what to dowith the dead fish? By the way please note for many roads they do noteven bother with asphalt anymore.
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Oil Extraction in the Amazon region requires heavy duty access roadsthe natural sulphate bearing clays in this area are difficult to maintainin the wet season. This RoadCem road was originally to have anasphalt wearing course. As you can see on the next page it was sostrong, they waited for two years of really plant movements beforethey applied the asphalt.
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Shell Oil are drilling across large swathes of NE Canada inthe environmentally sensitive Caribu lands with deeporganic clays and bone chilling winters. The access roadsthey need and heavy duty drilling platforms they need arebeing built with recyclable RoadCem soil stabilisation. Atechnology that can treat these deep soils, can survive thewinters, is stiff enough to support heavy point loadings andis not damaged or permeated by oil and chemical spills.
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When drilling is completed the 1,000,000 lb crawling rig isdismantled and shipped out by the temporary RoadCem haulroads and the 400mm deep RoadCem Platform has the top10mm removed for disposal before being milled back tonatural soil again.
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Walton on Thames Road bridge forCostain and Atkins - RoadCem turnsorganic mud to heavy duty cranesplatforms.
Large piling mat constructed for SevernTrent Water with RoadCem - Usingexisting organic silty soils withoutimport of stone.
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No cracking, no breakaway, no deflection,high visco dynamic properties preventingbounce.
“The best mat we ever piled” Bullivant’s H&Sspokesman.
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The Walton on Thames road bridge built by Costain plc, majorconstruction award winning project in 2013,14 and 15.
We are proud to say that the crane shown positioning the two partbridge in place is operating on a RoadCem stabilised soil platform,built exclusively from the pre existing site soils.
That is true sustainable innovation.
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RoadCem stabilised soil bases for runways and taxiways - strong.stiff and extremely durable with amazing lifespan.
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RoadCem pavements for Intensive Static/Slow Moving Load
Mexico; Puerta Toluca Rail Terminal
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VI. The main construction differencesTraditional vs Roadcem in a nutshell
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2 560 tons of new material
7,5 trucks
1 312 tons material to dispose of
113 trucks
168 tons of new material
1 180 liters of diesel fuel consumed
Traditional construction RoadCem construction
0 tons material to dispose of
Example: road length 1000 m, width 7.5 m
7 125 liters of diesel fuel consumed
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3 days20 days
up to 40% cost reduction
Example: road length 1000 m, width 7.5 mTraditional construction RoadCem construction
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STEP 2Estimation of the costs of the
project
ARE THE COSTS ACCEPTABLE
STEP 1Use general recommendations of
the client to determine initialdoses of Cement and RoadCem
STEP 3Prepare samples in the lab to
determine required performanceparameters
STEP 4Determine required performance
parameters
STEP 5Choose the pavement structurethickness on base of the design
and experience
STEP 6Complete the design process using
BISAR and results of STEP 4 tocheck the chosen pavementstructure thickness meets
minimum requirements withrespect to stress, strain and
displacements
ARE THE REQUIREMENTS MET ?YES NO
Compute Cementand RoadCemcosts per m3
YES NO
Prep
are
final
Des
ign
Spec
ifica
tions
Redu
ce C
emen
t and
/or
Road
Cem
dos
e
Chan
ge p
avem
ent s
truc
ture
thic
knes
s
Chan
ge C
emen
t and
/or
Road
Cem
dos
e