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road contruction.pptx

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road contruction.pptx

  1. 1. “PREVENTION TECHNICS FOR CRACKS IN ROAD” PRESENTED BY SAMMED KIRAN CHOUGULE GUIDED BY PROF. A.S.THORBOLE
  2. 2. AREA UNDER STUDY
  3. 3. INTRODUCTION The crack is one of the common diseases of asphalt pavement. The early crack has little influence on the performance of the use of the road, however, with the increasing of the cracks, quantitative accumulation leads to qualitative transformation the and has serious influence on pavement performance, even lead to the damage of the integrity of the road. Therefore, It is necessary for us to start from the early crack, analyzes its causes and puts forward prevention measures. The cracks of the asphalt pavement is inevitable and can't be avoided, we are only able to improve the design and construction techniques to reduce the generation of cracks and delay initial cracking time.
  4. 4. PROBLEM STATEMENT 1. The highway facilities are negligible or not exist including drainage systems and manholes and channels and other accessories such as handrails, and curbs because of the poor design and the high cost for construction and maintenance. 2. Poor maintenance policy, cracks in base, sanction system, local standards, supervision, laboratory tests, operation by high traffic volume and load, and construction in bad conditions are all causes for road deterioration. 3. High traffic axial load and volume is a cause for deterioration, and institutes and organizations in traffic highway and transportation areas should have to update rules and regulations and enforce their implementation in fact. Many of heavy traffic enter residential areas and takes unpermitted routes of roads and highways. 4. The prepared schedules for maintenance and construction usually start or happen during bad weather conditions at winter mainly. Contractor Individual Rank for Factors
  5. 5. 6. Structural failure of base, construction and shrinkage joints, defects caused during construction are causes for deterioration of road in crack and structural failure group. 7. Poor supervision, maintenance program, and tests during construction, poor local standards, highway facilities, and data base and sanction system are causes for deterioration of road, and should be updated and developed to keep up with the new requirements for construction. 8. Large traffic axial loading and volume also has a grouped rank of 3.59 among groups of factors. 9. Compaction during construction, bond between layers, and construction conditions rank 3.46, .43, and 3.41 respectively among groups. 10. Drainage systems, aggregate properties, align and geometry of road, layers’ thicknesses, and pavement width are all ranking bellow the mean of the grouped factor. Contractor Grouped Rank for Factors: 1. Thicknesses of surface, base, and sub-base, width of pavement, geometry and alignment of road are direct causes for deterioration of road as they specified during design and preparation of contract documents, also construction operation is not an area for a question as it is a direct implementation and application for the specifications, standards, and contract documents.
  6. 6. 1. To Study Pavement Road Construction process. 2. To Study Factors affecting quality of pavement road quality. 3. To study properties of ingredients of road and research on enhancement of quality. 4. Study types of failures in road. 5. Study Alternative technics of road construction. 6. Suggest the failure prevention construction technic to improve road quality. 7. Preparation of a project research report and guidelines for crack mitigation and preventive technics. OBJECTIVES
  7. 7. METHODOLOGY STUDY OF ROAD CONSTRUCTION PROCESS STUDY OF FACTORS AFFECTING ROAD CONSTRUCTION PROCESS STUDY OF FAILURES OF ROAD DUE TO IMPROPER CONCENTRATION OF INGREDIENT FINDING REMEDIAL SOLUTION FOR FAILURES RESEARCH ONPREVENTING TECHNICS USED IN ROAD CONSTRUCTION TO AVAOID CRACKS(FAILURE) SITE VISIT AND QUESTIONIER FOR CONTRACTORS TO KNOW THER PROBLEMS IN CONSTRUCTION PROCESS SUGGESTING PROPER METHODS/SOLUTION TO PREVENT ROAD CRACKS 5.METHODOLOGY
  8. 8. FINDING
  9. 9. Preventive measures to avoid creation of cracks: 1 Reduce Water Content in Concrete 2 Proper Concrete Mix Design and use of Quality Materials 3 Finishing of Concrete Surface
  10. 10. 4 Proper Curing of Concrete
  11. 11.  Applying good acrylic silicone sealer yearly to concrete works  Avoid calcium chloride admixtures  Prevent extreme changes in temperature.  Consider using a shrinkage-reducing admixture  Warm the subgrade before placing concrete on it during cold weather  Consider using synthetic fibers to help control plastic shrinkage cracks. Some Other Preventive Control Measures for Cracks in Concrete:
  12. 12. CONCLUSION The effectiveness of pavement treatments is often determined simply based on the benefits gained, as mentioned previously. The benefits, however, do not indicate effectiveness relative to cost, which is the main constraint for all State transportation departments. Most literature agreed that treatments applied to pavements in better condition produce more benefits, and the cost of the treatment was a function of the conditions. Further, the time-value relationship of money affects the cost of the treatment and its cost effectiveness. Therefore, benefits must be compared relative to costs to determine the cost effectiveness of the treatment and to select the treatment timing.
  13. 13. Performing pavement treatments at the optimum time provides t greatest benefit-to-cost ratio. Few methodologies for the determination optimum treatment timing for preventive maintenance and rehabilitati actions were developed. However, the most cost-effective treatments should consider t pavement longevity and should be based on the ratio of dollars to yea of service. To improve lifecycle costs, State transportation departmen should base their preservation strategies on maximizing the longevity the pavement network rather than maximizing the condition of t network.
  14. 14. 1. Patil Abhijit, D.Y.Patil Prathisthan’s Y.B.Patil Polytechnic, Akurdi, 2011 “Effects of Bad Drainage on Roads.” Civil and Environmental Research, Vol 1, No.1, 2011. 2. Kati Kõrbe Kaare,, Kristjan Kuhi, and Ott Koppel, 2012. “Tire and pavement wear interaction monitoring for road performance indicators.” Estonian Journal of Engineering, 2012, 18, 4, 324–335. Available at: 10.3176/eng.2012.4.04 3. Nordengen, PA, and Oberholtzer, F (2006). “Self regulation initiative REFERENCES
  15. 15. THANK YOU

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