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MODIFIED BITUMEN-RUBBER COMPOSITIONS FOR THE PREPARATION OF ROAD SURFACE BINDERS AND THE PROCESS FOR PREPARATION OF THE SAID BINDERS
MODIFIED BITUMEN-RUBBER COMPOSITIONS FOR THE PREPARATION OF ROAD SURFACE BINDERS AND THE PROCESS FOR PREPARATION OF THE SAID BINDERS
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机译：用于制备路面胶粘剂的改性双硅橡胶组合物及其制备方法
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摘要
A HOMOGENEOUS BITUMEN-RUBBER COMPOSITION FOR ROAD SURFACING COMPRISING 90 -92% BY WEIGHT OF BITUMEN AND 7-10% BY WEIGHT OF A CRUMB RUBBER MIXTURE IS DESCRIBED. THE CRUMB RUBBER IS DERIVED FROM SCRAP TRUCK TYRES GROUND TO A PARTICLE SIZE OF 40 MESH OR LESS. THE BITUMEN AND THE CRUMB RUBBER MIXTURE ARE INTIMATELY MIXED AT A TEMPERATURE OF BETWEEN 160 - 180°C; THIS TEMPERATURE IS MAINTAINED WITH AGITATION FOR 1-2 HOURS. THE BINDER OBTAINED SHOWED SIGNIFICANT IMPROVEMENTS IN PROPERTIES OVER THAT OF THE UNMODIFIED BITUMEN BINDER AND CAN BE KEPT AT A STORAGE TEMPERATURE BETWEEN 150 -155°C WITH AGITATION FOR UP TO 7 DAYS WITHOUT ANY NOTABLE CHANGE IN ITS PROPERTIES. THE BINDER CAN ALSO BE USED TO PRODUCE COLOURED PAVEMENT FOR USE AS WALKWAYS AND CYCLEPATHS.
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