AD- AND DESORPTION TESTS OF ROCK POWDER TO MALTHENES

AD- EN DESORPTIEPROEVEN VAN GESTEENTEPOEDER AAN MALTENEN

To gain insight into the bond of bitumen to mineral aggregates, the adsorption and desorption behaviour of a malthene fraction to two fillers that are chemically very different were studied: quartz flour (SiO2) and crushed limestone rock (CaCO3). The research focussed on finding a method to analyse the optimum loading condition of filler with bitumen, in order to be able to mutually compare fillers with respect to their bond to bitumen. Optimum loading is defined as putting a maximum amount of malthenes on rock powder in such a way that no traces of malthene lumps or crusts can be observed among the rock powder. Photometric analysis was used to investigate both fillers. It was found that the adsorption curve of the quartz flour as a function of the malthene concentrations reaches saturation relatively quickly. In case of the crushed limestone rock, however, saturation was not reached, not even with a malthene concentration twenty times higher. High malthene concentrations in solution soon result in less accurate photometric analyses. For the covering abstract of the conference see IRRD 867688.

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  • Corporate Authors:

    CENTRUM VOOR REGELGEVING EN ONDERZOEK IN DE GROND-, WATER- EN WEGENBOUW EN DE VERKEERSTECHNIEK (CROW)

    GALVANISTRAAT 1
    EDE,   Netherlands  6716 AE
  • Authors:
    • PIETERSEN, H S
    • KLARENAAR, WHM
    • VOSKUILEN, JLM
  • Publication Date: 1994-3

Language

  • Dutch

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Filing Info

  • Accession Number: 00674674
  • Record Type: Publication
  • Source Agency: DIENST WEG- EN WATERBOUWKUNDE (DWW)
  • ISBN: 90-6628-168-5
  • Files: ITRD
  • Created Date: Mar 8 1995 12:00AM