submitted by ashraf k asst. professor downloaded from civildigital.com

Submitted bySubmitted by

Ashraf KAshraf K

Asst. ProfessorAsst. Professor

Downloaded from CivilDigital.com

http://civildigital.com/application-zycosil-soil-pavements/


IntroductionIntroduction

• Water intrusion in building materials has Water intrusion in building materials has been a problem for the last 1000 yearsbeen a problem for the last 1000 years

• Fortunately, new developments in science Fortunately, new developments in science and technology have incorporated the use and technology have incorporated the use of nanotechnology to produce of nanotechnology to produce eco-eco-friendly, organo silicon products that can friendly, organo silicon products that can render most materials hydrophobic for render most materials hydrophobic for cycles of 20 to 30 years at a very cycles of 20 to 30 years at a very economical costeconomical cost




• Zycosil is new Zycosil is new generation of generation of nanotechnology, nanotechnology, which has been which has been developed for developed for waterproofing and waterproofing and has UV resistance, has UV resistance, thermal resistance, thermal resistance, and an ability to and an ability to withstand the wind withstand the wind erosion due to its erosion due to its nano-size and nano-size and penetrative powerpenetrative power




Water- the great destroyerWater- the great destroyer

• Moisture damage is caused by Moisture damage is caused by a loss of adhesion, commonly a loss of adhesion, commonly referred to as “stripping” referred to as “stripping” aggregate surface or a loss of aggregate surface or a loss of cohesion within the binder cohesion within the binder itself, resulting in a reduction itself, resulting in a reduction in stiffnessin stiffness

• Heavy traffic on a moisture-Heavy traffic on a moisture-weakened pavement can weakened pavement can result in premature rutting or result in premature rutting or fatigue cracking . The fatigue cracking . The presence of moisture can also presence of moisture can also accelerate the formation of accelerate the formation of potholespotholes




Water repellentsWater repellents

• Resistance to water intrusion Resistance to water intrusion • Prevention of water-soluble salts, particularly Prevention of water-soluble salts, particularly

chloride salts chloride salts • Penetration of repellent treatment to a Penetration of repellent treatment to a

measurable depth measurable depth • Long-term stability in an alkaline Long-term stability in an alkaline

environment environment • Low environmental and health risk Low environmental and health risk • UV stability (20+ years)UV stability (20+ years)




Types of water repellentsTypes of water repellents

• Film formers: These film Film formers: These film formers have a particle formers have a particle size greater than 100 nm, size greater than 100 nm, which will not allow them which will not allow them to penetrate inside the to penetrate inside the pores of the building pores of the building materials but instead form materials but instead form a film covering and a film covering and protecting the surface protecting the surface from water absorption from water absorption

• Failure of film formers: -Failure of film formers: -o Blocks breathabilityBlocks breathabilityo Life of only 2 – 5 yearsLife of only 2 – 5 years




• Penetrants: they are solvent based, soluble Penetrants: they are solvent based, soluble monomeric materials less than 6 ηm in size which monomeric materials less than 6 ηm in size which can easily penetrate inside the pores and sub-can easily penetrate inside the pores and sub-branches of the pores. branches of the pores.

• Failure of penetrants: - Failure of penetrants: -

o FlammabilityFlammabilityo High costHigh costo Toxic VOC solventsToxic VOC solvents




Zycosil nanotechnologyZycosil nanotechnology

• Any technology Any technology based on particles based on particles size less than 10 ηm size less than 10 ηm is considered Nano is considered Nano Technology Technology

• Zycosil molecule Zycosil molecule when dissolved in when dissolved in solvent has estimated solvent has estimated size of 3-6 ηm. size of 3-6 ηm.




Zycosil – the chemical actionZycosil – the chemical action• Most pavement materials Most pavement materials

contain hydroxyl (OH) contain hydroxyl (OH) groups. These OH groups groups. These OH groups can chemically react with can chemically react with alkoxy groups of Silane alkoxy groups of Silane to form permanent, to form permanent, mother nature’s mother nature’s strongest siloxane strongest siloxane bonds. These types of bonds. These types of products impart water products impart water repellency by modifying repellency by modifying surface characteristics surface characteristics from from hydrophilic to hydrophilic to hydrophobic.hydrophobic.

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Features of zycosilFeatures of zycosil

• Permanent water repellent layer on all Permanent water repellent layer on all types of soils, aggregates and other types of soils, aggregates and other inorganic road construction materials inorganic road construction materials

• The technology addresses the critical The technology addresses the critical subsurface drainage problems in road subsurface drainage problems in road making and repairs making and repairs

• Zycosil’s reactive bonding ability with the Zycosil’s reactive bonding ability with the aggregates and asphalt helps to eliminate aggregates and asphalt helps to eliminate stripping of aggregates t a great extentstripping of aggregates t a great extent




Advantages of using zycosilAdvantages of using zycosil

• In subgrade & GSB In subgrade & GSB

– Maintaining CBR Maintaining CBR value value

– Reduction of Soil Reduction of Soil Plasticity Plasticity

– Maintaining Maintaining Breathability Breathability

• In stone base course In stone base course

• In surface layersIn surface layers




Limitations of zycosilLimitations of zycosil• Adverse effects of the solvent used- ethylene Adverse effects of the solvent used- ethylene

glycolglycol• A lot of precautions to be takenA lot of precautions to be taken• More effective on pre-existing cracks than cracks More effective on pre-existing cracks than cracks

which occur after the applicationwhich occur after the application• It cannot be applied if: It cannot be applied if:

– Ambient temperature is below 10º C or above 50ºCAmbient temperature is below 10º C or above 50ºC– Rain is expected within 2 hours following the Rain is expected within 2 hours following the

application. application. – Precipitation has occurred within 24 hours prior to Precipitation has occurred within 24 hours prior to

application. application. – High winds or other conditions prevent proper High winds or other conditions prevent proper

application and overspray that may have an adverse application and overspray that may have an adverse effect on surrounding materials effect on surrounding materials




ApplicationsApplications

• Construction of pavements incorporating Construction of pavements incorporating usage of zycosilusage of zycosil




• MaintanenceMaintanence– Unpaved aggregate roads: - Saturate the Unpaved aggregate roads: - Saturate the

aggregate-soil surface including 2 meters each on aggregate-soil surface including 2 meters each on both sides of the road with diluted Zycosoil both sides of the road with diluted Zycosoil solution @ 3-L/Msolution @ 3-L/M22..

– Black topped roads: - Spray diluted Zycosoil Black topped roads: - Spray diluted Zycosoil solution @ 1.5- L/M2 on black top, shoulder and solution @ 1.5- L/M2 on black top, shoulder and slope. Sun dry for 2-3 hours and check for water slope. Sun dry for 2-3 hours and check for water repellency by drilling a hole in the soil area repellency by drilling a hole in the soil area

• RepairsRepairs– PotholesPotholes– CracksCracks




Standard testing methods

• Rilem Test Rilem Test

• Accelerated Accelerated weathering weathering

• Water uptake test Water uptake test




Untreated land Treated land


• Zycosil Demonstration - Sand.avi


ConclusionConclusion

• Sustainability Sustainability

• ““Cradle to cradle” design Cradle to cradle” design

• Zero pollution Zero pollution

• Innovation Innovation

• Viability Viability

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Documents

building materials

materials hydrophobic

water repellency

particles size

soluble monomeric materials

particle size greater

stripping of aggregates

uv resistance