Fig. 4. Mechanical testing in the laboratory. (a) Unconfined compressive test (b) Indirect tensile test.Figure optionsDownload full-size imageDownload as PowerPoint slide
2.4. Measurement of dry shrinkage
Fig. 5. Schematic of test set-up for deformation measurement.Figure optionsDownload full-size imageDownload as PowerPoint slide
The deformation of the hardening specimen was measured by three dial gauges during one year under the chosen curing regime. The mean dimensional change of the specimen was used to calculate the deformation rate, which uk101 given by:equation(2)S(t)=(L¯t−L0)Linitialwhere, L¯t = the mean value of three dial gauges at time, t, mm;L0L0 = the initial set value of three dial gauges, mm;Linit = the initially tested length of the specimen, mm (≈400).
2.5. Determination of coefficient of thermal expansion (CTE)
3. Results and discussion
Experiments form a major part of flame cell study. The results and discussion give an insight into the influence of the mixture variables on the structural properties of CTMiGr. By comprehensively analysing the results, the relation between the structural properties of CTMiGr and its mixture variables will be generalized.