1 / 62

Water Proofing

Water Proofing. Col (Retd) Harry Sidhu , FIE B.Sc Engg (Civil), M Tech (Structures) LM ICI, LM ISWE, LM ISCMS, LM ISET Chartered Engineer. Ex Additional Chief Engineer, Chandigarh Zone Ex Technical Advisor to ‘MC Bauchemie (I) Pvt Ltd’ & ‘McCoy Silicones’

pjeffery
Télécharger la présentation

Water Proofing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Water Proofing

  2. Col (Retd) Harry Sidhu, FIE B.Sc Engg (Civil), M Tech (Structures) LM ICI, LM ISWE, LM ISCMS, LM ISET Chartered Engineer

  3. Ex Additional Chief Engineer, Chandigarh Zone • Ex Technical Advisor to ‘MC Bauchemie (I) Pvt Ltd’ & ‘McCoy Silicones’ • Visiting Faculty to ‘National Technical Teachers Training & Research Institute’, Chandigarh for PG Students

  4. Column Expert on Waterproofing: HT Estates, Hindustan Times, Delhi & Chandigarh • Ex Consultant to Chandigarh Administration on Waterproofing • Ex Consultant to CE Chandigarh Zone (MES) on Waterproofing • Ex Consultant to CE Bhatinda Zone (MES) on Waterproofing

  5. External Examiner for M.Tech/ ME Students IIT Mumbai, Punjab University & TIET Patiala (Deemed to be University) • Consultant for Structural Design, Rehabilitation and Waterproofing • Consultant for Soil & Civil Material Testing

  6. What is Damp Proofing? DAMP PROOFINGIS ACTUALLY THEMANAGEMENT OF WATER:THE ART OF MAKINGFLOW OF WATER EASIER, KEEPINGINSIDE WATER IN&OUTSIDE WATER OUT

  7. Waterproofing/Damp proofing!! Treatment of a Surface or Structure to prevent passage of water in the: Presence of Hydrostatic Pressure - Waterproofing Absence of Hydrostatic Pressure - Damp Proofing As per ACI Committee 515

  8. Sources of Leakage/Dampness • Roofs & Terraces • Parapet & Roof Junction • Crumple Joints • Sunken Floors

  9. Sources of Leakage/Dampness • Defective DPC • Porous Masonry, RWP’s, Chajjas, Window Cills etc • Leaking Water meters, Service Tanks, pipes etc

  10. Roofs

  11. This is how are Roof Tops are Generally maintained

  12. Depressed Tiles Potential Leakage Areas from Terraces Parapet Junctions RWP

  13. Crumple Joints

  14. DL+LL Tarfelt DL+LL Slab Thermal Stresses Seismic Forces Loads on Crumple Joint

  15. DL+LL DL+LL Tarfelt Slab Thermal Stresses Seismic Forces Crumple Joint Under Loads

  16. Disintegrated Polysulphide The way joints are generally Sealed

  17. JOINT COVERED !!

  18. Cracked Cover of the Building Joint

  19. Cracked Polysulphide

  20. Wet Areas

  21. Dampness in Sunken Floors Ceramic Tiles Floor Finish Neat Cement Joint Accumulated Water

  22. Finished Floor Level Floor Traps Leakage through Floor Traps Major Source of Leakage

  23. RISING DAMPNESSIN WALLS

  24. Rise related to Capillary Diameter Rise of Water by Capillary Action Considering average capillary dia in masonry, the rise is roughly 1.5 mtrs

  25. Skirting Floor DPC GL Sub Base GWT Rise of Ground Water into Walls

  26. Skirting Floor DPC GL Sub Base Entry of Surface Water into Walls

  27. Water Proof Water Repellent

  28. Water Repellency

  29. Major Cause of Porosity Uncontrolled Water Cement Ratio

  30. Continuous Capillaries in Concrete

  31. Coefficient of Permeability Water/Cement Ratio Water/Cement Ratio V/s Permeability

  32. AGE AT WHICH CAPILLARIES BECOME SEGMENTED

  33. Effect of W/C Ratio on Concrete Workability with Plasticizer Strength/Workability Water Cement Ratio

  34. Water Cement Ratio !! All Said & Done ‘The Man’ with the “Dibba” at the Mixer Continues to control this vital factor at most sites. What are we doing about it?

  35. How to Reduce W/C Ratio? Use Plasticisers

  36. Plasticisers/ Super Plasticizers • These are workability enhancers/water reducers • Can be used as accelerators or retarders • Air Entraining Agents • Must comply with IS 9103

  37. Review of use of Bituminous Products for Waterproofing • Not Compatible to most building materials • NotBreathable • Not Resistant to UV Rays

  38. Review of use of Bituminous products for Waterproofing • Uniform Application difficult due to viscosity • Generally grade 80/100 used instead of 80/20 or 85/25. • Over coating by tarfelt/polythene sheets prone to wrinkles & folds

  39. Review of use of Bituminous products for Waterproofing • Subsequent application by different materials not possible. Coatings have to be chipped off • Prone to Blistering & Pealing • Not Eco Friendly

  40. Prerequisites of Waterproofing Systems • Breathability • Compatibility • Ease of Application • Flexibility against thermal movement

  41. Prerequisites of Waterproofing Systems • Wear Resistance • Bonding with substrate • Eco Friendly • Cost effectiveness

  42. Selection of Materials • Load carrying capacityof basic substrate • Criteria forabrasion/chemical resistance& color • Geometryof surface

  43. Selection of Materials…. • Slopeand inclination of Roof • Climatic conditionsviz thermal & rainfall • Level ofGWT & presence of chemicals

  44. Selection of Materials…. • Accessibilityduring repair & service conditions • Crack Bridging Capability • Maintenance requirements& criteria

  45. Stages involved in Waterproofing • Investigation & Diagnosis • Selection of materials & systems • Design & specifications for the system

  46. Stages involved in Waterproofing • Application & Supervision • Maintenance

  47. CONVENTIONAL SYSTEMS • Mud Phuska & Tiles over Bitumen • Brick Bat Coba/ Lime Terracing • Ferro Cement Topping • Tar Felt Treatment

  48. MODERN SYSTEMS • Grouting • Modified Bituminous Systems • Single Ply Membranes

More Related