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ÒÔÏÂÊÇÀ´×ÔOcak Y, Sofuoglu A, Tihminlioglu F, et al. Protection of marble surfaces by using biodegradable polymers as coating agent[J]. Progress in Organic Coatings, 2009,66(3):213-220.ÎÄÏ×µÄÒ»¶Î£¬Çó°ï°ï·Òëһϡ£ The water vapor permeability of uncoated and coated marble experiments were conducted by using a circularly cut (average diameter: 38.5; average thickness: 1.5mm) prepared marble. Each of the marble plates replaced in the partially water filled (1/2) cylindrical PVC containers. The plates were fixed in these containers in triplicates. Then, their lids were closed and put in the oven at a temperature of 40 ◦C, and relative humidity around 50%. The conainers were weighed every 24 h. When the vapor flow through the samples was less than 5%, the experiments were conducted for 5 more days. During this time, the measurements were repeated and recorded every 24 h. The differences were used to calculate the water vapor fluxes for uncoated and coated plates. Channel flow cell studies on the evaluation of surface pretreatments using phosphoric acid or polymaleic acid for calcite stone protection.The channel flow cell (CFC) method has been applied to determine the mechanism of calcite dissolution in acid solution . Çó°ïæ·Ò룬CFCµ½µ×Ö¸µÄÊÇʲô·½·¨¡£Ð»Ð»£¡ |
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