types of pavement

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lesson 11 read and translate the text to learn more about the main types of pavement. rigid and flexible pavements development of a country depends on the connectivity of various places with adequate road network. roads are the major channel of transportation for carrying goods and passengers. they play a significant role in improving the socio-economic standards of a region. roads constitute the most important mode of communication in areas where railways have not developed much and form the basic infrastructure for the development and economic growth of the country. the benefits from the investment in road sector are indirect, long-term and not immediately visible. roads are important assets for any nation. in the past, gravel road surfaces, cobblestone and granite setts were extensively used, but these surfaces have mostly been replaced by asphalt or concrete. there are various types of pavements depending upon the materials used. basically, all hard …

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surfacing can be directly laid on the subgrade - road can be used for traffic within 24 hours - road cannot be used until 14 days of curing - have low flexural strength - have high flexural strength - damaged by oils and certain chemicals - no damage by oils answer the following questions. 1. what role do roads play? 2. how can you characterize the benefits from the investment in road sector? 3. what types of road surfaces were used in the past? 4. what do the variety of pavement types depend on? 5. what groups of pavement types are distinguished? 6. why are flexible pavements called so? 7. what are rigid pavements composed of? 8. what are the principles of state highway agencies in choosing the pavement type? 9. what are the basic differences between flexible and rigid pavements?

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lesson 11 read and translate the text to learn more about the main types of pavement. rigid and flexible pavements development of a country depends on the connectivity of various places with adequate road network. roads are the major channel of transportation for carrying goods and passengers. they play a significant role in improving the socio-economic standards of a region. roads constitute the most important mode of communication in areas where railways have not developed much and form the basic infrastructure for the development and economic growth of the country. the benefits from the investment in road sector are indirect, long-term and not immediately visible. roads are important assets for any nation. in the past, gravel road surfaces, cobblestone and …

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