{"id":{"repo_id":"birmingham","oai_identifier":"oai:etheses.bham.ac.uk:1011"},"canonical_url":"https://search.dev.ndltd.org/etd/birmingham/oai:etheses.bham.ac.uk:1011","repository":{"repo_id":"birmingham","name":"University of Birmingham","base_url":"https://etheses.bham.ac.uk/cgi/oai2"},"display":{"title":"Materials considered for pavement and embankment design","abstract":"Much of the land area of Bangladesh is in the flood plain and constructing durable roads has always proven challenging since the host soils are not generally suitable and there is lack of suitable aggregate. In addition to these challenging conditions, engineers invariable have limited methods of evaluating relevant soil properties for undertaking suitable design. In order to overcome some of the resulting difficulties an investigation was undertaken to evaluate properties of soils through various means, which in the main included locally available equipment and evaluating correlations for better estimating required properties. This work comprised of a ground investigations using very limited range of equipment (hand augers and SPT) and results were compared with measured values and with commonly used correlations. Findings pointed to the importance of ensuring that only correlations that were developed for local soils should be used. Survey of upper layers of the road showed that some of the surfacing materials had aged and no longer complied with the specifications. Poor underlying road subgrade and aged overlying layers of pavements is likely to result in increased maintenance issues. Better information at the design stage can help to address some of issues at least.","abstract_html":"Much of the land area of Bangladesh is in the flood plain and constructing durable roads has always proven challenging since the host soils are not generally suitable and there is lack of suitable aggregate. In addition to these challenging conditions, engineers invariable have limited methods of evaluating relevant soil properties for undertaking suitable design. In order to overcome some of the resulting difficulties an investigation was undertaken to evaluate properties of soils through various means, which in the main included locally available equipment and evaluating correlations for better estimating required properties. This work comprised of a ground investigations using very limited range of equipment (hand augers and SPT) and results were compared with measured values and with commonly used correlations. Findings pointed to the importance of ensuring that only correlations that were developed for local soils should be used. Survey of upper layers of the road showed that some of the surfacing materials had aged and no longer complied with the specifications. Poor underlying road subgrade and aged overlying layers of pavements is likely to result in increased maintenance issues. Better information at the design stage can help to address some of issues at least.","abstract_has_math":false,"creators":["Shahjahan, Muhammad"],"institution":"University of Birmingham","degree_name":"m_ph","degree_level":"m_ph","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2010,"date_issued":"2010-07","date_published":"2010-07","updated_at":"2026-07-24T01:11:19Z","subjects":["TE Highway engineering. Roads and pavements","TA Engineering (General). 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In order to overcome some of the resulting difficulties an investigation was undertaken to evaluate properties of soils through various means, which in the main included locally available equipment and evaluating correlations for better estimating required properties. This work comprised of a ground investigations using very limited range of equipment (hand augers and SPT) and results were compared with measured values and with commonly used correlations. Findings pointed to the importance of ensuring that only correlations that were developed for local soils should be used. Survey of upper layers of the road showed that some of the surfacing materials had aged and no longer complied with the specifications. Poor underlying road subgrade and aged overlying layers of pavements is likely to result in increased maintenance issues. 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