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Study on the mechanism of liesegang pattern development during carbonating of traditional sticky rice-lime mortar

Study on the mechanism of liesegang pattern development during carbonating of traditional sticky rice-lime mortar

Guang Pu Xue Yu Guang Pu Fen Xi 32(8): 2181-2184

Liesegang patterns in traditional sticky rice-lime mortar undergoing carbonation were investigated by means of FTIR, XRD and SEM. Results indicate that well-developed Liesegang patterns only occur in the mortar prepared with aged lime and sticky rice. The smaller Ca(OH)2 particle size in aged lime and the control of the sticky rice for the crystallization of calcium carbonate lead to the small pores in this mortar. These small pores can make Ca2+ and CO3(2-) highly supersaturated, which explains the reason why Liesegang pattern developed in the sticky rice-aged lime mortar. The formed metastable aragonite proves that Liesegang pattern could be explained based on the post-nucleation theory.

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Accession: 055980309

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PMID: 23156777

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