2008 · 40 citations · 0 references
EngineeringMaterials EngineeringMaterials ScienceMaterials CharacterizationMechanical Behavior Of MaterialsPavement EngineeringCementitious MaterialsMaterial TestingPavement FatiguePavement MaterialsStrength Of MaterialsStrength PropertiesCompressive StrengthCompressive Strength TestingFatigue Performance AnalysisIndirect Tensile StrengthLaboratory Fatigue TestingPavement Fatigue PerformanceStrength DevelopmentUnconfined Compressive Strength
The study aims to evaluate the strength, modulus, and fatigue of two cemented materials in laboratory tests and to compare the results with full‑scale accelerated pavement tests. The authors tested hornfels crushed rock and quartzite siltstone bound with 3 % and 4 % cement, using unconfined compressive, indirect tensile, and flexural beam tests on samples cured for 7 days to over 500 days. The flexural beam test proved suitable for assessing modulus and fatigue, with load‑damage exponents ranging from about 6 to 8. The study includes footnote (a).
The study involved a laboratory assessment of two cemented materials to assess their strength, modulus and fatigue properties. The cemented materials consisted of a hornfels crushed rock and a quartzite siltstone bound with general purpose cement at 3 per cent and 4 per cent addition rate by mass respectively. The laboratory testing involved unconfined compressive strength, indirect tensile testing and flexural beam testing. Samples were prepared in the laboratory and from field placed cemented material and cured for a variety of periods from 7 days to over 500 days prior to testing. The study showed that the flexural beam test was a suitable means for assessment of the modulus and fatigue of cemented materials and that load damage exponents for the cemented materials varied between about 6 and 8. The laboratory results are to be compared with full scale accelerated pavement test results as the next stage in the overall research project. (a)