Loose marble stone conservation and renovation

26.01.12 / Shoushan Stone / Author: iqiwei

Loose marble yellow stone conservation and renovation site repair

Currently, the use of marble and granite building material decoration on the ground a lot, some marble, loose material, porosity and high water absorption, especially in their daily walk around the ground wear, natural weathering and yellow stone disease, etc., the board will result in raising, explosion grain and other damage. Past general engineering construction, most of the yellow stone without conservation treatment, so soon after completion of various diseases occur, such as yellowing, efflorescence and other phenomena. A few years ago, a company in Shanghai, takes over a 28-story commercial building on the ground in addition to yellow, repair, renovation work. The building of the yellow stone had contracted suppliers have asked us to deal with the ground. Their on-site inspection is: almost all the ground building is beige silver wire, a large area of ​​pan base plate surface, a gray. Touch, feel granular material. More than a year later, the building engineering department through advertising that the corporate governance of yellow stone disease, called to demand management. To live their surprise, only about a year in the original efflorescence has become a large area where the macula, the place has shown a serious brown. Particle board explosion, resulting in pits, large pieces like nails, there is a small grain of rice, everywhere. Construction at the time the order is: In addition to dealing with a polishing a macular hole repair a water conservation. Proven defective in that order. As the process is not correct, in every road construction have been some problems. 1, in addition to macular treatment: they collected the import market, with several domestic and syrup from the sample. Confirmation of a place can not damage the yellow stone macular pharmaceutical, and then conducted a large-scale construction, the cleaning can remove 97% of the macula. But there is still 3% after repeated brushing no effect. Can only seek the consent of the owners to take sample for laboratory analysis, preparation of targeted agents to be removed. Can not occur because the disease is caused, so with a different formation mechanism for the generation of pharmaceutical-related macular processing is impossible. 2, grinding and polishing: polishing should be said that under normal circumstances there is no problem. However, due to the plate after corrosion, loose surface, the grinding process. While grinding. Board side of the explosive particles. The old hole was removed, the new holes have appeared. 3, holes patched: hole repair take longer, be patient. We used hot glue repair, not ideal, strong enough. Easy to fall off, shoes, walked the dirt will stick to the rubber soles on the formation of black spots. With marble glue up is not ideal, such as after the first glue polished, polished marble glue in the case of the heat generated when the weak fall: in particular, holes, if glue after the first grinding. You can not afford to make the glue marks and glue at the dull, resulting in scarring. 4, water conservation: selection of water-soluble surface protectant, operators may be more than brushing, inadequate ventilation, eight hours later still not dry, the next day at the black-lined plate found deeper in some places also become the green. By observing the reasons are: water-soluble curing agent containing water, the water in the gap if they can not quickly evaporate, in contact with air oxidation to generate a new disease. The reason for the failure: the board by corrosion, has become loose. So on the plate for reinforcement. Found that some reinforcement in the company’s test can be, but not ideal in the field test results. Analysis found that, in the company to board easier to handle dry, while in the field even with partial heating drying board, until the heat left, bottom and sides of the moisture will come soon invaded, occupied the pores, the reinforcement material can not penetrate into the yellow stone house. As a polishing agent reinforcement will be the same as the torn skin peeling off, would not achieve the role of reinforcement. In the field of construction can not be dried on a large area plate, so the choice of reinforcing materials, must be selected hydrophilic and good, strong penetration, good polishing, bonding, and will not cause discoloration of the yellow stone material. Based on the above revised construction sequence: 1, with 50 mesh coarse disc, first floor polished smooth, open the pores of the yellow stone surface; 2, air dried in the air: as the ambient temperature. Ventilation at least 24 hours or more; 3, brushing solvent penetration curing agent, blocking harmful substances in water and bottom up after brushing dry; 4, brushing reinforcement dilute the concentration of point pass, let it penetrate into the gap. L2 hours covered by plastic film to prevent solvent evaporation. The second time was thicker coating can repair ~ b4, tL holes and small cracks, still covered with plastic film 12 hours; 5, patching holes: The adhesive power, polishing and good glue, with lust, first fill a large hole, supplemented hole, slightly higher than the feeding board. to completely dry; 6, 300 butterfly with a 100 # a scar gel film rubbed off; 7, with a 3ooo # ~ 500 # mill; 8, polishing: 9, do planes or waxing conservation; through the sequence of construction, the plate is not in the polished grains burst, polished smooth as a mirror. Through the period of observation, macular no longer generated.