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Tesi etd-05102011-105814


Thesis type
Tesi di dottorato di ricerca
Author
MARKANDAY SUBRAMANIAN, SURESHKUMAR
URN
etd-05102011-105814
Title
POLYMER MODIFIED ASPHALT NANOCOMPOSITES
Settore scientifico disciplinare
CHIM/05
Corso di studi
INGEGNERIA CHIMICA E DEI MATERIALI
Commissione
tutor Polacco, Giovanni
Parole chiave
  • Nanocomposites
  • Polymer
  • Modification
  • Bitumen
  • Asphalt
Data inizio appello
23/06/2011;
Consultabilità
completa
Riassunto analitico
Asphalt one of the versatile materials of antique, inspite of its compositional<br>variations and complexities, widely employed in various applications like water<br>proofing, paving etc. Due to the complex physical and chemical nature, Asphalt<br>seldom performs well, without any modification. Amidst other materials, polymers<br>found to be most suitable for modifying asphalt to suit the application demands.<br>Nanomaterials, particularly invention of nanoclays, have enhanced the properties<br>of polymers manifold when introduced in polymer. Polymer Nanocomposites thus<br>obtained emerge with innovative properties which are not available with existing<br>polymers. Similar to the effect of nanoclay in polymer, polymers improve the<br>properties of asphalt. The hypothesis behind this work is to combine the<br>advantages of nanoclay in polymer and polymer in asphalt by introducing, polymer<br>and nanoclay in asphalt. Two different nanoclays, Cloisite 20A and Dellite 43B,<br>were introduced along with EVA by different methods such as Physical Mixing and<br>Melt Blending. This gave rise to Polymer Modified Asphalt Nanocomposites<br>(PMAN) a new class of material. Thermal, morphological, structural and<br>rheological properties were studied. Based on the above studies, fuel resistance<br>PMAN with EMA, EVA and SBS developed. Also, flammability of PMAN was<br>studied by developing new test method using Limiting Oxygen Index equipment.<br>From this research work, new class of materials (PMAN) based on polymer and<br>nanoclay with improved rheological and performance properties, fuel resistance<br>were developed.
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