A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of test methods to characterize the shrinkage properties of cementitiously stabilized materials
Abstract Shrinkage cracking of cementitiously stabilized layers (CSL) causes distresses in a pavement structure and decreases the pavement’s service life. Thus it is important to develop methods that can characterize properties of cementitiously stabilized materials (CSM) that lead to shrinkage cracking. Limited test methods are available to characterize the shrinkage behaviour of CSM. Shrinkage of CSM consists mainly of free drying shrinkage, autogenous shrinkage, and thermal shrinkage. This study developed new test methods that characterize these shrinkage properties of CSM and quantify the contribution of each of them to the shrinkage of CSM. The test methods were evaluated in the laboratory on both heavily and lightly stabilized materials and were found to be effective in quantifying the shrinkage behaviour of CSM. Results also showed that autogenous shrinkage strain is relatively small when compared with drying and thermal shrinkage. The temperature cycling test is effective in measuring the coefficient of thermal expansion of the CSM and can separate the thermal shrinkage from drying and autogenous shrinkage during a test.
Development of test methods to characterize the shrinkage properties of cementitiously stabilized materials
Abstract Shrinkage cracking of cementitiously stabilized layers (CSL) causes distresses in a pavement structure and decreases the pavement’s service life. Thus it is important to develop methods that can characterize properties of cementitiously stabilized materials (CSM) that lead to shrinkage cracking. Limited test methods are available to characterize the shrinkage behaviour of CSM. Shrinkage of CSM consists mainly of free drying shrinkage, autogenous shrinkage, and thermal shrinkage. This study developed new test methods that characterize these shrinkage properties of CSM and quantify the contribution of each of them to the shrinkage of CSM. The test methods were evaluated in the laboratory on both heavily and lightly stabilized materials and were found to be effective in quantifying the shrinkage behaviour of CSM. Results also showed that autogenous shrinkage strain is relatively small when compared with drying and thermal shrinkage. The temperature cycling test is effective in measuring the coefficient of thermal expansion of the CSM and can separate the thermal shrinkage from drying and autogenous shrinkage during a test.
Development of test methods to characterize the shrinkage properties of cementitiously stabilized materials
Wang, Jingan (author) / Wen, Haifang (author) / Muhunthan, Balasingam (author)
2020-07-01
Article (Journal)
Electronic Resource
English
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