Russian Federation
Purpose: To investigate the possibility of using artificial pozzolana to create modified gypsum lime mortar, recommended for architecture monument restoration. Methods: At the research pursued, there were used Russia State Standard GOST 125-79 "Plaster Binders. Technical specifications", GOST 23789-79 "Plaster Binders. Test Methods", GOST 10180-90 "Concretes. Methods for Determining Strength by Control Samples", GOST 24544-81 "Concretes. Methods for Determining Shrinkage and Creep Deformations", GOST 8735-14 "Sand for Construction Works. Test Method" and GOST 8736-14 "Sand for Construction Works. Technical Conditions". It has been established experimentally that to create reliable matrix, compatible with traditional materials of historical masonry, the use of restoration composition, including metakaolin and dolomite flour, is effective. Results: The process of restoration material design to replace damaged plaster of walls and ceilings is presented, strength characteristics of stones of various compositions on the basis of air binders are discussed, conclusion is made on the necessity to develop restoration material two types: for to put on lime plaster family and for - gypsum-lime plaster family. Practical significance: The results obtained can be used at partial or complete replacement of plaster that would allow to preserve building architectural appearance.
Gypsum, lime, metakaolin, filler, compressive strength
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