DEFORMATION OF FRESH CEMENT MORTAR CAUSED BY COMPRESSION

UEBER DAS VERFORMUNGSVERHALTEN JUNGEN ZEMENTMOERTELS BEI DRUCKBEANSSPRUCHUNG.

FRESH CEMENT MORTARS ARE COMPOSED OF SEVERAL PHASES. IF THEY HAVE REACHED A SATISFACTORY DEGREE OF COMPACTION, THEY CAN BE CONSIDERED DURING SETTING AS TWO-PHASE SYSTEMS, THE SOLID ONE. HYDRATION, WHICH TAKES PLACE CONTINUOUSLY SINCE THE BEGINNING OF MIXING, CONSTANTLY MODIFIES THE LIQUID PHASE THROUGH THE CHEMICAL BOND WITH THE WATER. THE STABILITY OF A FULLY COMPACTED CYLINDRICAL SAMPLE IS DUE TO THE FRICTION OF THE GRAINS, THE CAPILLARY TENSION AT THE SURFACE OF THE SAMPLE, AND, TO A SMALLER EXTENT, COHESION. THIS IS WHY ITS BEHAVIOUR IS SIMILAR TO THAT OF A SAMPLE COMPOSED OF ROLLED GRAINS AND WET BINDING PARTICLES. A COMPARISON BETWEEN THE RESULTS OF TESTS ON MORTAN 205 TO 380 MINUTES OLD AND PREVIOUS TESTS SHOWED THAT: CYLINDRICAL SAND AND FRESH MORTAR SAMPLES HAVE THE SAME STRESS- DEFORMATION BEHAVIOUR DURING TRIAXIAL TESTS. THE CURVES SHOW A CONCAVE CURVATURE IN THE RELATION TO THE AXIS OF DEFORMATION. THIS ARTICLE WAS TRANSLATED INTO FRENCH: T.71. 12 BY CERIB, BP 42, 28-EPERNON.

• Corporate Authors:

  Bauverlag GmbH

  Wittelbacherstrasse 10
  6200 Wiesbaden,   Germany 
• Authors:
  • Plank, A
• Publication Date: 1971-12

Language

• German

Media Info

• Features: Figures; References;
• Pagination: p. 741-751
• Serial:
  • Betonwerk und Fertigteil-Technik
  • Volume: 37
  • Issue Number: 12
  • Publisher: Bauverlag GmbH

Subject/Index Terms

• TRT Terms: Cement; Compression; Deformation; Mortar
• ITRD Terms: 1757: Age; 4577: Aggregate; 5901: Capillarity; 4758: Cement; 4767: Cement paste; 6486: Chart; 5903: Cohesion; 5532: Compression; 6458: Cylinder (math); 5595: Deformation; 2870: Degree of curvature; 5520: Failure; 4750: Fresh concrete; 4729: Grout; 7195: Hydration; 6733: Liquid; 4769: Mortar; 6200: Particle size distribution; 6251: Sample (mater); 4105: Sand; 5930: Stability; 5575: Stress (in material); 6438: Surface; 6255: Test; 8538: Translation; 5566: Triaxial
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00081677
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Feb 27 1975 12:00AM