{"id":1453,"date":"2011-02-17T22:20:26","date_gmt":"2011-02-17T22:20:26","guid":{"rendered":"http:\/\/www.joswassink.nl\/insight\/?p=1453"},"modified":"2011-02-17T22:20:26","modified_gmt":"2011-02-17T22:20:26","slug":"think-brick","status":"publish","type":"post","link":"https:\/\/www.joswassink.nl\/insight\/?p=1453","title":{"rendered":"Think Brick"},"content":{"rendered":"<p><strong> <\/strong><\/p>\n<div id=\"attachment_1454\" style=\"width: 310px\" class=\"wp-caption alignright\"><strong> <\/strong><strong><a rel=\"attachment wp-att-1454\" href=\"http:\/\/www.joswassink.nl\/insight\/?attachment_id=1454\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1454\" class=\"size-thumbnail wp-image-1454\" title=\"science01_copy6\" src=\"http:\/\/www.joswassink.nl\/insight\/wp-content\/uploads\/2011\/02\/science01_copy6-300x217.jpg\" alt=\"\" width=\"300\" height=\"217\" \/><\/a><\/strong><p id=\"caption-attachment-1454\" class=\"wp-caption-text\">No perfect match: wall of a church in Breda in original Belgian white stone (below) has been completed with much more sharp-edged Reffroy limestone. (Photo: Wido Quist)<\/p><\/div>\n<p><strong>Architects engaged in restoration projects should choose their materials  more consciously, says Dr Wido Quist in his PhD thesis.<\/strong><\/p>\n<p>Many of the churches and cathedrals in south-western Netherlands were  built with white Belgian sandy limestone, which was mainly imported  during the 14th and 15th centuries. Nowadays, however, only the  occasional lump of this limestone is found as a by-product of sand  mining. Meanwhile, the old churches erode, their extended parts, like  statues and tympana, especially so, and need to be repaired or replaced.  But with what?<br \/>\nSandstone cannot be used because of a law  (Zandsteenbesluit, 1951) prohibiting the use of this stone, as it poses a  health hazard to workers. Sandstone&#8217;s fine dust, created when the stone  is being processed, is said to cause silicosis, or &#8216;dust lungs&#8217;.<!--more--><\/p>\n<p>As  a PhD student, Dr Wido Quist (33), of the faculty of Architecture,  researched the selection process for restoration materials in four  historic buildings over long periods of time &#8211; the entire 20th century.  Dr Quist wanted to know the reasons why specific materials had been  chosen; however, often there was no documentation available about the  choices of materials. Moreover, it seemed that external circumstances  had dictated the choices, such as, for example, when supply routes were  cut off during the First World War, or a building contractor simply  preferring to use up his old supplies first. In later years, the choices  often seemed to be based on fashion or faith in the claimed quality of a  stone, like its durability. Nowadays, it&#8217;s mostly Portland limestone,  imported from the UK, that&#8217;s being used. However, when the Portland is  used to complete a structure originally made from Bentheimer sandstone,  the Portland sticks out against the grey and weathered Bentheimer like a  sore thumb.<\/p>\n<p>Dr Quist argues that the restoration architect is  responsible for the choice of materials, and that choosing the materials  shouldn&#8217;t be a matter of taste or convention. Instead, he argues, one  should make explicit choices about colour, texture, historic unity,  aesthetics and durability. A simple table in his PhD thesis should make  this decision-making process more transparent.<\/p>\n<p><em>Wido Quist,  &#8216;Vervanging van witte Belgische steen \u2013 Materiaalkeuze bij restauratie&#8217;,  14 February 2011, PhD supervisor Professor Rob van Hees.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Architects engaged in restoration projects should choose their materials more consciously, says Dr Wido Quist in his PhD thesis.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,6],"tags":[46,262,362,374],"class_list":["post-1453","post","type-post","status-publish","format-standard","hentry","category-articles","category-delta","tag-architecture","tag-limestone","tag-restoration","tag-sandy-stone"],"_links":{"self":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts\/1453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1453"}],"version-history":[{"count":0,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts\/1453\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}