THE INFLUENCE OF TEST MACHINES ON CYLINDER SPLITTING STRENGTH
The report describes the cube tests and cylinder splitting tests carried out on 20 cube test machines and also a supplementary programme of work on the effects of platen tilting and cylinder length. The results from these tests were compared with those from a "losenhausen" which was adopted as a standard reference machine. Differences in mean cylinder splitting tests from the reference machine ranged from -18 percent of +7.6 percent. 60 percent of the machines gave mean results significantly different from the reference machine at 10 percent level. The failure modes modes noted during these tests indicated that 23 out of 240 cylinders tested failed abnormally. The comparative cube tests indicated that 4 machines gave cube results significantly different from reference but the same four did not indicate significant difference for the cylinder splitting tests. It was found that platens tilted left to right relative to splitting plane and this had a significant effect on cylinder splitting strength. The results indicated that the cylinder splitting test in its present form is inadequate as a compliance test and it is recommended that a more comprehensive examination of the influence of different test machines on test results be undertaken.
Technical CentreCold Harbour Lane
Egham, Surrey, England
- RYLE, R
- Publication Date: 1973-9
- Features: Figures; Photos; References; Tables;
- Pagination: 18 p.
- Issue Number: 77
- TRT Terms: Aerodynamics; Automobiles; Cubes; Machines; Research projects; Shape; Tensile strength; Tension; Test procedures; Vehicles
- Uncontrolled Terms: Cylinders
- Geographic Terms: United Kingdom
- ITRD Terms: 178: Compliance (specif); 4755: Concrete; 6457: Cube; 6458: Cylinder (math); 6249: Splitting tensile test; 5544: Strength (mater); 5502: Tension
- Subject Areas: Highways; Materials; Research; Vehicles and Equipment; I91: Vehicle Design and Safety;
- Accession Number: 00265225
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Report/Paper Numbers: R&D Rpt.
- Files: ITRD, TRIS
- Created Date: Feb 27 1975 12:00AM