summertraining-1809301ajskelasfkj61205.pptx

pwd training report

1. JAIPUR ENGINEERING COLLEGE KUKAS, JAIPUR CIVIL ENGINEERING PRESENTATION ON SUMMER TRAINING AT PWD RAEBARELI PRESENTED BY: VIKASH KUMAR BAIRWA ROLL NO: 20 EJECE 01 3

2. TABLE OF CONTENTS NAME AND LOCATION OF WORK PWD-AN OVERVIEW INTRODUCTION TYPES OF PAVEMENTS FLEXIBLE PAVEMENT RIGID PAVEMENT MATERIALS FOR FLEXIBLE PAVEMENT LAYERS COMPONENTS OF FLEXIBLE PAVEMENT

3. TRAINING DURATION:- FROM 06-06-2018 TO 07-07-2018 NAME OF WORK :- CONSTRUCTION OF LALGANJ SEMARPAHA RALPUR ROAD RAEBARELI (ODR). ROAD DIMENSIONS:- LENGTH OF ROAD- 12.6 Kms Width of the road- 7.0ms

4. LOCATION OF WORK :-

5. Public Works Department (PWD), under the Ministry of state government, is the pioneer in construction arena in our country The PWD conducts the construction, improvements, strengthening and maintenance of road and bridges. Mr. Keshav Prasad Maurya is the current PWD Minister of Uttar Pradesh.

6. INTRODUCTION Roads constitute the most important a r eas w he r e r ail w a y s m o d e of h a v e not c om m uni c a tion in developed much. Development of a country depends on the connectivity of various places with adequate road network. India h a s se c o n d la r g e s t r oa d n e t w or k s i n the w o r ld mana g em e n t an d admin i s t r a tion, r oad s in I n dia ( o v er 5.6 million km a t p r es e n t ) . F o r the pu r po s e of are divided into the following categories:-

7. Expressways National Highways (NH) State Highways (SH) Major District Roads (MDR) Ordinary District Roads (ODR) Village Roads (VR) The status of Road Network in India is described below- TYPE OF ROAD LENGTH (IN kms) EXPRESSWAYS 1208 NATIONAL HIGHWAYS 101011 STATE HIGHWAYS 176166 DISTRICT ROADS 561940 OTHER RURAL ROADS 4762968 TOTAL LENGTH OF ROADS 5603293

8. TYPES OF PAVEMENTS FLEXIBLE PAVEMENT :- Have low flexural strength Load is transferred by grain to grain contact Have a lifespan of 15-20 years Bitumen is widely used in construction along with aggregates and filler materials.

9. RIGID PAVEMENT :- Design is based on flexural strength or slab action Constructed from cement concrete or reinforced concrete slabs Have low repairing costs but completion cost is very high Service life could be 30 years or more.

10. MATERIALS FOR PAVEMENT L AYERS : - BITUMINOUS BINDER A GGREGATES COARSE AGGREGATES FINE AGGREGATES SOIL

11. COMPONENTS OF FLEXIBLE PAVEMENT SEAL COAT SURFACE COURSE TACK COAT BINDER COURSE PRIME COAT BASE COURSE SUB-BASE COURSE SUBGRADE

12. SUBGRADE:- It is the compacted soil layer that forms the foundation of pavement system. The minimum thickness of subgrade is 500mm for NH, SH and ODR and 300mm for VR.

13. SUB-BASE COURSE:- Serve as a effective drainage layer of pavements It also sustains lower magnitude of stresses than the base course Crushed stone aggregates are often used in GSB layer.

14. BASE COURSE:- Sustains the wheel load stresses disperses through larger area on the GSB layer below It enhances load carrying capacity of pavement structure Prepared as per specifications laid by Govt. of India(MORTH)

15. PRIME COAT:- It is the process of spraying of liquid bituminous binder of low viscosity over a granular surface It penetrates deep into the surface and seal the voids Consists of 60% bitumen and 40% kerosene

16. BINDER COURSE:- Thin bituminous surface Prevent the entry of surface water into the pavement layers during the rains It helps in distribution of load through larger surface

17. TACK COAT:- It is the application of a small quantity of liquid bituminous binder of low viscosity on a primed granular surface The main objective of tack coat is to provide adequate interface bond between the receiving pavement surface and new bituminous layer being overlaid

18. SURFACE COURSE:- It is a thick bituminous surface Consists of crushed aggregates and bituminous binder heated and mixed in a hot mix plant at specified temp. Laid with the help of mechanical paver and compacted by rollers.

19. SEAL COAT They are bituminous emulsions sprayed by mechanical spray to seal the top surface It prevent water to penetrate into the surface It protects the top layer from oxidation and wear due to exposure to sun and air.

20. The typical X- Section of the road appears as-