A microbalance study of the effects of hydraulicity and sand grain size on carbonation of lime and cement
El-Turki, A., Carter, M. A., Wilson, M. A., Ball, R. J. and Allen, G. C., 2009. A microbalance study of the effects of hydraulicity and sand grain size on carbonation of lime and cement. Construction and Building Materials, 23 (3), pp. 1423-1428.
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A microbalance technique for the real-time measurement of carbonation in cement and lime pastes and mortars is described. Experimental results showing carbonation rates in a range of these materials are presented. The results confirm that the progression of carbonation is proportional to t1/2. Systematic differences in carbonation rate with hydraulicity are shown for a range of lime pastes of the same mix proportion. For lime mortars, the carbonation rate is shown to decrease as the sand particle size is increased for mixes of a given volume fraction sand content. Scanning electron microscopy shows the typical crystal morphologies produced on carbonation. It is shown that the microbalance provides a highly sensitive technique for the investigation of carbonation in cementitious materials.
|Creators||El-Turki, A., Carter, M. A., Wilson, M. A., Ball, R. J. and Allen, G. C.|
|Departments||Faculty of Engineering & Design > Architecture & Civil Engineering|
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