THE PREPARATION OF NATURAL STONE WITH SPECIAL CONSIDERATION OF THE EFFECTS OF METHODS OF PREPARATION ON THE QUALITY OF THE MATERIAL

AUFBEREITUNG VON NATURSTEIN MIT BESONDERER BERUECKSICHTIGUNG DER BEEINFLUSSUNG VON GUETEEIGENSCHAFTEN DURCH AUFBEREITUNGSTECHNISCHE MASSNAHMEN

THE PREPARATION OF NATURAL STONE EFFECTIVELY TRANSFORMS A HEAP OF RAW STONE OBTAINED FROM A QUARRY SUCH THAT THE RESULTING GRAIN COMPOSITION IS SUITABLE FOR USE AS A MATERIAL IN HEAVY CONSTRUCTION WHICH POSSESS PROPERTIES STIPULATED IN DELIVERY CONDITIONS AS DESIRED BY THE CUSTOMER. THE PREPARATION IS A MULTI-STAGE OPERATION. THE MOST IMPORTANT STAGES IN THE METHOD ARE THE BREAKING, GRADING, SORTING AND DUST REMOVAL. THE TYPE OF PENETRATION INFLUENCES THE QUALITY CHARACTERISTICS. PARTICLE SIZE DISTRIBUTION AND GRAIN SHAPE CAN BE INFLUENCED BY PREPARATION TECHNIQUES TO A RELATIVELY LARGE EXTENT; STRENGTH PROPERTIES, FROST- AND HEAT BEHAVIOUR CHARACTERISTICS ON THE OTHER HAND, ONLY TO A LIMITED EXTENT. NEVERTHELESS FROST RESISTANCE CAN ALSO BE FAVOURABLY INFLUENCED BY CAREFUL DETACHMENT AND BREAKING UP (AVOIDANCE OF CRACK FORMATION) AND STRENGTH BY THE PRODUCTION OF A GOOD GRAIN SHAPE AND FIRM GRADINGS WITH A LOW PROPORTION OF OVERSIZE GRAINS. THE QUALITY OF THE PRODUCTS DEPENDS ON THE CHOICE OF MACHINERY IN EACH STAGE OF THE PROCESS, THEIR METHOD OF OPERATION AND THEIR RELATIVE POSITION IN THE 'FAMILY TREE' OF THE TECHNIQUE.

Language

  • German

Media Info

  • Pagination: 27-31
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01288976
  • Record Type: Publication
  • Source Agency: Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV)
  • Files: ITRD
  • Created Date: Nov 21 2010 1:34AM