Weathering course and waterproofing.pptx

Construction techniques and practices

1. Weathering course & Waterproofing

2. Weathering course Protection of top surface of R.C.C. slab from rain and heat MATERIALS REQUIRED: Sand Hematite light weight aggregate Aerocon light weight aggregate surkhi Lime Clay tiles Water

3. Materials: clay tiles surkhi

4. types of weathering course: cooling tiles terracotta tiles rubber pads wooden decks bitumen sheets

5. Preparation:(brick jelly concrete) Lime+surkhi+sand+other materials(kadukkai,jaggery)+water lime mortar brick jelly concrete

6. Procedure: Laying procedure: Lined and marked Brick jelly concrete is laid in a thickness of 7.5cm to 12.5cm concrete is laid in a proper slope of 1 in 60 to 1 in 1000 Beating methods: Rammed with wooden rammers wooden beaters is used until it sets upto 7 days Finished with clay tiles

7. Waterproofing: Designed to prevent water from penetrating a building waterproofing chemicals bitumen with a filler component base products such as polyesters, fiber glass,rag fber becomes saturated by tar,creating a waterproofing material Materials used: cement sand metal brick bat waterproofing chemicals : chlorides,sulphates,epoxy resins,acrylic based products

8. waterproofing in various parts of building: wc,bathrooms,terrace,roofs and chejjas,basement,swimming pools, underground ducts,overhead water tanks

9. liquid applied systems;(dr. fixit) bitumen emulsion:paint like substance polymer coating:acyrlic coating preformed membranes: bitumen based:sheets thermoplasic membranes:commercial roofs types: powder based system waterproofing admixtures:roofs and basements reactive pore filling chemicals:cement based product cementitious membranes :commonly used brick bat coba

10. THANK YOU MADE BY, N.Vijay Anandan, B.E.(civil)2nd year.