Thanu.pptx presentation and it's attachm

About ready mix concrete and steel and aluminium and all the thing

1. SAMPOORNA INSTITUTE OF TECHNOLOGY AND RESEARCH SEMINAR PRESENTATION ON, READY MIX CONCRETE UNDER THE GUIDENCE OF Mrs Shreelakshmi B C (civil dept ) Presented by Thanushree M 1SZ20CV003

2. READY MIX CONCRETE

3. INTORDUCTION Ready mix concrete which is popularly called as RMC. The first ready mix factory which was built in 1930’s. The consumption of cement in the form of RMC is about 5% in India, where as in developed countries it’s about 70%. The leading RMC supplier worldwide is the mexican concrete and cement company cemex.

4. Definition A concrete which is specially manufactured for the delivery to the costumer construction site in a freshly mixed, plastic and unhardened state.

5. The main ingradients are Cement Sand Coarse aggregate water

6. Special ingradients Admixtures Accelarators Retorders Superplastisizers Air entraining agents

7. Concept of Readymix Concrete Ready-mix concrete has cement, aggregates, water   and   other   ingredients,   which   are weighbatched   at a   centrally located   plant . This is   then  delivered   to the   construction site in transit mixers and can be used straight away without any further treatment. Ready Mixed Concrete is manufactured under computer-controlled operations and transported and placed at site using sophisticated equipment and methods

8. MIXING A central mixing plant uses a stationary mixer to mix the concrete.The concrete is then transferred into the transportation vehicle a truck mixing plant places all unmixed dry materiala into the truck mixer water is added and mixing is then done in the truck.

9. RMC PLANT

10. Small weigh batching plant for local deliveries

11. The wheelbarrow is used for transporting concrete at ground level Belt conveyor use a continuous belt to transport concrete from the mixing plant to the pour site conveyors are flexible and easy to set up Transit mixer is one of the most popular equipment for transporting concrete over a long distance in RMC plant Some of the most common methods are: Mortar pan Crane, Bucket,and Ropeway Truck mixer and Dumper Chute TRANSPORTATION

12. RMC delivery trucks

13. TRANSIT MIXER Transit mixer is a multipurpose device used to transport concrete mortar from a concrete batching plant. The transit mixer is loaded with dry material and water

14. For ready mix concrete supply the purchaser should specify the Following Designated max. size of coarse aggregate Desired / max. slump at the point of delivery Air content (for air entrained concrete) Mix design requirement – such as cement content, max. water content & admixtures or minimum compressive strength at 28 days Unit weight required (for structural lightweight concrete.

15. Utilization of Fly ash Though the scope for utilization of fly ash in Readymix concrete is very high, the concept of fly ash as an additive to concrete is still at very initial stage and it is not popular among majority of actual users of concrete

16. Hurdles to set up new Plant: SELECTION OF AREA. AVAILABILITY OF WATER

17. Properties Desired properties of hardened ready-mixed concrete include Durability Strength Water tightness Resistance to abrasion.

18. Applications Today, ready-mixed concrete is frequently used to construct Highways Bridges Dams Buildings Airports

19. Sewer systems Tunnels Home foundations Driveways Sidewalks.

20. Advantages A centralised concrete batching plant can serve a wide area The plants are located in areas zoned for industrial use, and yet the delivery trucks can service residential districts or inner cities

21. Better quality concrete is produced Elimination of storage space for basic materials at site Elimination of procurement / hiring of plant and machinery

22. Wastage of basic materials is avoided Time required is greatly reduced. Noise and dust pollution at site is reduced Labor associated with production of concrete is eliminated

23. Disadvantages TRANSPORTATION Cost of ready mix concrete can be higher than traditional site mixed concrete There can be a lack of control over the quality of the concrete It causes headaches, nause , dizziness and even others problems. Excessive noise can leads to hearing loss Site restrictions It is very expensive It requires much space and power supplies.

24. About ACC Concrete

25. ACC Concrete - a wide range High Strength Concrete High Performance Concrete Self-leveling Concrete Self-compacting Concrete Coloured Concrete Concrete made with binary and ternary blends of cements Early strength Concrete Fibre reinforced Concrete

26. Anticipating huge potential for the product, cement majors, including Associated Cement Companies, Grasim, L&T, India Cements, Priyadarshini Cements, Chettinad Cement and Madras Cements, are foraying into the RMC business

27. Goals: To determine the most economical and practical combination of readily available materials To produce a concrete that will meet requirements under specific conditions of use. The majority of concrete used for agricultural applications is supplied by ready-mix producers

28. CONCLUSION RMC is more advantageous than site mix concrete Easier addition of admixture Flexibility in mix design RMC which produces uniform, consistent and quality assured concrete Faster and speedier construction

29. THANK YOU