Pavement
Prediction of Flexural Strength and Breaking Strain of Cemented Materials: Laboratory Study
- Publication no: AP-T251-13
- ISBN: 978-1-925037-25-8
- Published: 15 October 2013
- PDF (free) Download
Consideration is being given to the use of new methods of characterisation to improve performance prediction in the Austroads pavement design procedures, including flexural strength, breaking strain and flexural modulus.
This study evaluated cemented materials. A number of basecourse materials were treated with cement and compacted to permit flexural beam testing to be undertaken. Additional data was obtained from related projects conducted previously.
A regression model was derived that related common basecourse material characteristics to the flexural strength of these cement treated materials. A meaningful model could not be derived relating breaking strain to other material characteristics.
- 1. Introduction
- 2. Method
- 2.1. Sample Preparation
- 2.1.1. Sampling and Mixing
- 2.1.2. Compaction
- 2.1.3. Pre-test Preparation
- 2.2. Test Methods
- 2.2.1. Flexural Test Method
- 2.2.2. Flexural Strength Testing
- 2.2.3. Flexural Modulus Testing
- 3. Materials
- 3.1. Cement
- 3.2. Lateritic Gravel
- 3.3. Weathered Granite
- 3.4. Calcrete
- 3.5. Ferricrete
- 3.6. Metagreywacke
- 4. Results
- 4.1. Previously Reported Results
- 4.1.1. Flexural Strength Results after 28 Days of Curing
- 4.1.2. Flexural Strength Results after Five and Nine Months of Curing
- 4.2. Materials Tested During 2011–12
- 4.2.1. Flexural Strength
- 4.2.2. Flexural Modulus
- 5. Analysis
- 5.1. Review of Data
- 5.1.1. Moisture Content
- 5.1.2. Relative Density
- 5.1.3. Breaking Strain
- 5.1.4. Flexural Strength
- 5.2. Flexural Strength
- 5.2.1. Regression Model
- 5.2.2. Accuracy
- 5.3. Breaking Strain
- 5.3.1. Regression Model
- 5.3.2. Accuracy
- 6. Correlation to the Unconfined Compressive Strength Test
- 7. Conclusions
- References
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