23.
    发明专利
    未知

    公开(公告)号:FI68859B

    公开(公告)日:1985-07-31

    申请号:FI783095

    申请日:1978-10-11

    Applicant: DEGUSSA

    Abstract: There is provided a process for improving mineral asphaltic coatings for streets and roadways comprising preparing a mixture to be used as the base mineral asphalt coating material, homogeneously mixing in 0.1 to 10 weight % of silica which is either (1) a precipitated silica, (2) a precipitated and spray dried silica or (3) a pyrogenically produced silica and further working this mixture into a mineral asphalt coating for streets and roadways.

    PROCESS FOR IMPROVING BITUMINOUS PAVING MIXTURES

    公开(公告)号:CA1115462A

    公开(公告)日:1982-01-05

    申请号:CA317866

    申请日:1978-12-13

    Applicant: DEGUSSA

    Abstract: The present invention provides a process for producing an improved bituminous paving mixture which contains aggregates for use in highway and road construction which comprises mixing different aggregates to be incorporated into bituminous paving mixes, homogeneously mixing silicic acid with said mixed aggregates in an amount between 0.1 and 10% by weight of the aggregates and further processing said homogeneous mixture of aggregates and silicic acid into said bituminous paving mixtures.

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