Table 1 Details of the tests and analyses performed on mortar specimens
From: Influence of polar amino acids on the carbonation of lime mortars
Test/analysis | Mortar curing time | Test device/analysis instrument | Test method/analysis working condition |
|---|---|---|---|
Weight loss | 2, 4, 6, 9, 16, 23 and 30 days | Electrical balance (accuracy 0.01 g, Shanghai Hochoice Apparatus Manufacturer Co. Ltd., China) | – |
Surface hardness | 2, 4, 6, 9, 16, 23 and 30 days | Shore D hardness durometer (Handpi Instruments, China) | Measurements were taken 5 times at different positions on specimen top surface, at least 6 mm apart, with the point of the indenter at least 9 mm from any edge |
FTIR | 30 and 180 days | Thermo Fisher Scientific Nicolet iS50 Spectrometer (Thermo Fischer Scientific Inc., U.S.A.) | Wavenumber 4000–400 cm−1, resolution 4 cm−1, 64 scans |
XRD | 30 and 180 days | PANalytical X’pert3 Powder X-ray diffractometer (PANalytical, Netherlands) | Cu-Kα radiation (λ = 1.540598 Å), 2θ range 5–90°, step scan 0.01°, scan speed 10° min−1, working voltage 40 kV, working current 100 mA |
TGA | 30 and 180 days | Mettler Toledo TGA/DSC1 instrument (Mettler Toledo, Switzerland) | Room temperature to 1000 °C, N2 atmosphere, heating rate 10 °C min−1 |