{"id":109,"date":"2012-12-20T13:45:56","date_gmt":"2012-12-20T13:45:56","guid":{"rendered":"https:\/\/valmargstone.com\/?p=109"},"modified":"2014-11-14T08:02:37","modified_gmt":"2014-11-14T08:02:37","slug":"%d0%bf%d1%80%d0%b5%d0%b4%d0%b8%d0%bc%d1%81%d1%82%d0%b2%d0%b0-%d0%bd%d0%b0-%d0%b3%d0%bd%d0%b0%d0%b9%d1%81%d0%b0-%d0%b8%d0%b2%d0%b0%d0%b9%d0%bb%d0%be%d0%b2%d0%b3%d1%80%d0%b0%d0%b4","status":"publish","type":"post","link":"https:\/\/valmargstone.com\/en\/%d0%b8%d0%b2%d0%b0%d0%b9%d0%bb%d0%be%d0%b2%d0%b3%d1%80%d0%b0%d0%b4%d1%81%d0%ba%d0%b8-%d0%b3%d0%bd%d0%b0%d0%b9%d1%81\/%d0%bf%d1%80%d0%b5%d0%b4%d0%b8%d0%bc%d1%81%d1%82%d0%b2%d0%b0-%d0%bd%d0%b0-%d0%b3%d0%bd%d0%b0%d0%b9%d1%81%d0%b0-%d0%b8%d0%b2%d0%b0%d0%b9%d0%bb%d0%be%d0%b2%d0%b3%d1%80%d0%b0%d0%b4\/","title":{"rendered":"Advantages of Ivaylovgrad Gneiss"},"content":{"rendered":"

\"\"<\/a><\/p>\n

It is a well-known fact that natural stones have great strength and resistance to various external influences. This is a typical characteristic of the slates that are extracted at a great depth \u2013 they are less brittle, do not crumble over time and do not weather, unlike the slates that are extracted from the surface layers.<\/p>\n

The gneiss field in the region of Ivaylovgrad is at a great depth, and because of this the extracted rock material has excellent quality.<\/p>\n

The table below, showing the technical characteristics of gneiss, supports this fact.<\/p>\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n
Parameters<\/td>\nResult of measurement<\/td>\nStandard<\/td>\n<\/tr>\n
Strength under pressure when it is dry<\/td>\n129,3<\/td>\n120 – 130<\/td>\n<\/tr>\n
Strength under pressure when soaked with water<\/td>\n136,1<\/td>\n100 – 150<\/td>\n<\/tr>\n
Softening coefficient<\/td>\n0,96<\/td>\nNot required<\/td>\n<\/tr>\n
\n

Coefficient of pores<\/p>\n<\/td>\n

103,6<\/td>\nNot required<\/td>\n<\/tr>\n
Coefficient of cold-resistance<\/td>\n0,86<\/td>\n\u041d\u0430\u0434 0,8<\/td>\n<\/tr>\n
Loss of mass after 25 cycles \u2013 average value<\/td>\n0,004<\/td>\nNot required<\/td>\n<\/tr>\n
Appearance of the frozen samples<\/td>\nThe appearance does not change<\/td>\nBulgarian State Standard (BDS) 11485-73:Visual assessment at every fifth cycle<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The rock material, extracted in the Eastern Rhodope Mountains, is strong, has great thermal resistance and excellent parameters as regards wearing out and durability in cases of rapid changes in temperature.<\/p>","protected":false},"excerpt":{"rendered":"

It is a well-known fact that natural stones have great strength and resistance to various external influences. This is a typical characteristic of the slates that are extracted at a great depth \u2013 they are less brittle, do not crumble over time and do not weather, unlike the slates that are extracted from the surface […]<\/p>\n","protected":false},"author":1,"featured_media":192,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[25,10],"tags":[],"_links":{"self":[{"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/posts\/109"}],"collection":[{"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/comments?post=109"}],"version-history":[{"count":23,"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/posts\/109\/revisions"}],"predecessor-version":[{"id":1208,"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/posts\/109\/revisions\/1208"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/media\/192"}],"wp:attachment":[{"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/media?parent=109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/categories?post=109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/valmargstone.com\/en\/wp-json\/wp\/v2\/tags?post=109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}