TY - CONF A1 - Ramge, Peter A1 - Kühne, Hans-Carsten A1 - Meng, Birgit T1 - Repair mortars for the restoration and reprofiling of natural stone elements in cultural heritage N2 - For the protection of the world's cultural heritage the restoration of listed buildings and monuments is an important task. In many cases the need to repair and reprofile natural stone elements occurs. Repair mortars for such applications have to match historicocultural interests as well as durability related and constructive interests. Currently a research project dealing with the development and optimisation of such mortars is set up at the BAM. Special focus is laid on the possibility of a modular adaption to match a vast variety of stone properties. Besides the development and lab scale testing of the mortar system, an in-situ application will be planned and executed. T2 - EWCHP-2011 - European workshop on cultural heritage preservation CY - Berlin, Germany DA - 26.09.2011 KW - Repair mortar KW - Natural stone KW - Stone restoration KW - Stone reprofiling KW - Modular system KW - Listed buildings and monuments PY - 2011 SN - 978-3-8167-8560-6 SP - 281 EP - 288 AN - OPUS4-24561 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramge, Peter A1 - Kühne, Hans-Carsten ED - Alexander, M. G. ED - Beushausen, H.-D. ED - Dehn, F. ED - Moyo, P. T1 - Development of repair mortars for the restoration of natural stone in cultural heritage N2 - Compared with concrete repair, the repair of natural stone is generally a similar task but at the same time very different. For listed buildings and monuments, historical, cultural and aesthetical interests become the ruling parameters. Especially from the demands of total reversibility of repair measures and strict prevention of the slightest original substance loss, which are not known in concrete repair, various restrictions are derived. From an aesthetical point of view, the same appearance as the original stone is desired for the mortar, whereas from a technical point of view, a monolithic behaviour of the repaired stone with homogeneous material properties would be favoured. This creates a need for a multitude of different property combinations and the whish for an independent adjustability of technical and aesthetical properties. A research project dealing with the development and optimisation of modular Stone repair mortars is currently carried out at BAM Federal Institute for Materials Research and Testing. T2 - 3rd International conference on concrete repair, rehabilitation and retrofitting III CY - Cape Town, South Africa DA - 03.09.2012 KW - Repair mortar KW - Natural stone KW - Stone restoration KW - Stone reprofiling KW - Modular system KW - Cultural heritage PY - 2012 SN - 978-0-415-89952-9 IS - Theme 3 SP - 882 EP - 887 PB - CRC Press CY - London, UK AN - OPUS4-26506 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramge, Peter A1 - Ünal, Murat A1 - Kühne, Hans-Carsten T1 - Polymer modified repair mortars for the restoration of natural stone in cultural heritage N2 - A research project dealing with the development and optimisation of modular repair mortars for natural stone is currently carried out at the BAM (Federal Institute of Materials Research and Testing). To provide the conservator with the best possible options to match colour, texture and technical requirements of the stone, the repairmortar System will be Setup on a modular basis. Different binder Systems are planned, which can be combined with different aggregate compositions and different pigments. The aim is to be able to modify the appearance of the mortar independent of ist mechanical properties. When working in the ränge of cultural heritäge, one specific demand is the Option of total reversibility of each repair task. In order to guarantee the reversibility and to ensure that the repair mortar does by no means induce any Damage to the original substance (e.g. by constraining forces), strength and stiffhess of the repairmortar have to be controlled and kept below the respective values of the original natural stone. On the other hand the mortar needs a certain abrasion resistance and durability. To accomplish all these requirements the use of polymer dispersions is very helpful, as they allow the production of low stiffhess mortars with at the same time relatively high flexural strength values. Also investigations on “alternative” modifications known from historical applications such as the use of casein are carried out. T2 - ASPIC 2012 - 7th Asian symposium on polymers in concrete CY - Istanbul, Turkey DA - 03.10.2012 KW - Repair mortar KW - Natural stone KW - Cultural heritage KW - Polymer cement mortar (PCC) KW - Stone restoration KW - Stone reprofiling KW - Casein PY - 2012 SN - 978-975-561-427-4 SP - 415 EP - 422 AN - OPUS4-26775 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramge, Peter A1 - Ünal, Murat A1 - Kühne, Hans-Carsten ED - Uzoegbo, H.C. ED - Schmidt, Wolfram T1 - Modular repair mortars for natural stone in cultural heritage N2 - For the protection of the world’s cultural heritage the restoration of listed buildings and monuments is an important task. In many cases the need to repair and reprofile natural stone elements occurs. Repair mortars for such applications have to match historico-cultural interests as well as durability related and constructive interests. Currently a research project dealing with the development and optimisation of such mortars is set up at the German Federal Institute of Materials Research and Testing (BAM). To provide the conservatorwith the best possible options to match the colour, texture and technical requirements of the stone, the repair mortar System will be setup on a modular basis. Different binder Systems are planned to be combined with different aggregate compositions and different pigments. By the modular setup the possibility of independent adjustment of mechanical properties and appearance is aimed. In order to guaranty the reversibility and to ensure that the repair mortar does not induce any damage to the original substance, strength and stiffness of the repair mortar have to be well controlled. The use of polymer dispersions is helpful here, as they allow the production of low stiffness mortars with at the same time relatively high flexural strength values. Also investigations on “alternative” modifications known from historical applications such as the use of casein are carried out. Despite the urgency of seemingly more important building tasks, there is also a great demand for natural stone repair in cultural heritage on the African continent. There is a wide ränge of different objects reaching from prehistoric monuments up to colonial architecture, all in different säte of preservations and subjected to a variety of individual environmental ant climatic conditions, which demand individual and adjustable restoration techniques and materials. T2 - ACCTA - International conference on advances in cement and concrete technology in Africa 2013 CY - Johannesburg, South Africa DA - 28.01.2013 KW - Repair mortar KW - Natural stone KW - Cultural heritage KW - Polymer cement mortar (PCC) KW - Stone restoration KW - Stone reprofiling PY - 2013 SN - 978-3-9815360-3-4 SP - 1089 EP - 1098 AN - OPUS4-27768 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -