Abstract：
Archaeological lime samples from sites in Han dynasty and Ming dynasty, natural limestone and the experimentally man-made lime were investigated by means of X-ray diffractometry and Fourier transform infrared spectrometry (FTIR) to study the way of identifying the ancient man-made lime. The results show that v2/v4 ratio of products resulted from carbonation reaction of man-made lime is higher than that of natural limestone; with additional grinding, the trend lines of v2 versus v4 for carbonation products of the man-made lime have a steeper slope when compared to natural limestone, which can be recognized as a simple method for identifying the ancient man-made lime. According to these results, archaeological lime samples from sites in Han dynasty and Ming dynasty may be carbonized by man-made lime. Therefore, it has great significance for studyies on the ancient man-made lime and the production technology of lime.
