Restoration of Buildings and Monuments最新文献_第4页

Subjective Sensation of Color Differences – Determination of Thresholds Depending on Color Tones and Resolution 色差的主观感觉。根据色调和分辨率确定阈值

Restoration of Buildings and Monuments Pub Date : 2015-02-01 DOI: 10.1515/rbm-2015-0003

C. Brischke, Tanja Borcharding, U. Mengel

{"title":"Subjective Sensation of Color Differences – Determination of Thresholds Depending on Color Tones and Resolution","authors":"C. Brischke, Tanja Borcharding, U. Mengel","doi":"10.1515/rbm-2015-0003","DOIUrl":"https://doi.org/10.1515/rbm-2015-0003","url":null,"abstract":"Abstract Colors are frequently defined by three points on the L*a*b* coordinates of the CIELAB color space, and the distance between two colors can be expressed as the total color difference ΔE. In particular with respect to reproducibility of print media color differences are an important parameter, as well as for car finishes and textile dyes. Color changes are also the result of ageing and weathering which is an issue for art objects and in the building and restoration sector. However, the subjective perceptibility of color differences depends on numerous factors and general thresholds are difficult to define. This study aimed therefore on defining tolerance levels for color changes in dependence of color tones and color tone combinations as well as their resolution. In total 30 test persons evaluated samples, which had been painted with acrylic artist colors with defined color differences (ΔE = 0–7). The test subjects realized color differences already at ΔE = 1–4 for the highest resolution. Threshold values have been identified for different tones as well as the effect of interdependencies between tones and the level of color heterogeneity between adjacent areas.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"9 1","pages":"21 - 27"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75481439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The Relevance of Maintenance and Monitoring in Architectural Conservation 维护与监测在建筑保护中的重要性

Restoration of Buildings and Monuments Pub Date : 2015-02-01 DOI: 10.1515/rbm-2015-0001

A. Elena Charola, F. Henriques, M. L. Magadán

{"title":"The Relevance of Maintenance and Monitoring in Architectural Conservation","authors":"A. Elena Charola, F. Henriques, M. L. Magadán","doi":"10.1515/rbm-2015-0001","DOIUrl":"https://doi.org/10.1515/rbm-2015-0001","url":null,"abstract":"Abstract The Italian standards, formerly NORMAL, define Extraordinary Maintenance as those where a major intervention on the building is carried out, usually referred to as a conservation intervention. These receive much attention from the media thus prompting the interest of NGO and for non-profit organizations which take an interest in funding such projects. Conservation interventions are critical for the preservation of our architectural heritage;however, the trigger for their undertaking, as well as their timing, is mainly determined by political interests. Because of the lack of ordinary maintenance, conservation interventions have to address heightened material deterioration problems thus increasing the complexity and invasiveness of the required operations, as well as an overall higher cost. The most worrisome issue is that once the intervention is completed, the building or monument is considered as being in a stable condition and not requiring any further action. Only in few cases is the most ordinary maintenance regularly carried out but what is neglected is the monitoring, the early identification of those “symptoms” revealing that a problem is present and should be addressed before more damage occurs. The paper uses various examples to illustrate the above points.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"44 1","pages":"1 - 8"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89084430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consolidation and Strengthening of Historical Masonry by Means of Mineral Grouts: Grout Development 矿物注浆加固和加固历史砌体:注浆的发展

Restoration of Buildings and Monuments Pub Date : 2015-02-01 DOI: 10.1515/rbm-2015-0004

D. Van Gemert, S. Ignoul, K. Brosens, E. Toumbakari

引用次数: 11

Stone Consolidation by Bacterial Carbonatogenesis: Evaluation of in situ Applications 细菌碳化作用下的岩石固结:原位应用的评价

Restoration of Buildings and Monuments Pub Date : 2015-02-01 DOI: 10.1515/rbm-2015-0002

C. Rodriguez-Navarro, F. Jroundi, M. T. González-Muñoz

{"title":"Stone Consolidation by Bacterial Carbonatogenesis: Evaluation of in situ Applications","authors":"C. Rodriguez-Navarro, F. Jroundi, M. T. González-Muñoz","doi":"10.1515/rbm-2015-0002","DOIUrl":"https://doi.org/10.1515/rbm-2015-0002","url":null,"abstract":"Abstract Precipitation of calcium carbonate minerals by bacteria, the so-called bacterial carbonatogenesis, is a promising method for the consolidation of decayed stone. Despite extensive laboratory testing that has demonstrated the efficacy of this method, little is, however, known regarding the medium- and/or long-term performance of this bacterial conservation treatment once applied in situ, on stone buildings. Here, we report on the evaluation of the performance of bacterial consolidation treatments applied in three different historical buildings placed in an urban environment and built using a highly porous, easily decayed calcarenite stone. Peeling tape tests show a significant long-lasting (up to four years) strength improvement following treatment with either a Myxococcus xanthus bacterial culture or a sterile nutritional solution that selectively activates the carbonatogenic bacteria inhabiting the stone. Total color changes, measured before and after treatment using a spectrophotometer, are systematically below the acceptable value of ΔE ≤ 5. Culture-dependent analysis of the microbiota shows that 100% of the culturable bacteria collected before and after treatment is carbonatogenic, and the total count of fungi spores remains constant or diminishes, while the population of acid-producing bacteria decreases over time after treatment application. Culture-independent microbial analyses show that no deleterious microbiota develops after treatment, being carbonate-producing Proteobacteria, Firmicutes and Actinobacteria the most abundant phyla both before and after treatment. Overall these results show that the in situ application of the bacterial consolidation method shows no detrimental side effects and is highly effective in the medium- and long-term.","PeriodicalId":20957,"journal":{"name":"Restoration of Buildings and Monuments","volume":"197 3 1","pages":"20 - 9"},"PeriodicalIF":0.0,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76605403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Consolidation and Strengthening of Historical Masonry by Means of Mineral Grouts: Modeling Structural Behavior of Grouted Three-Leaf Masonry 矿物注浆加固历史砌体:注浆三叶砌体结构性能模拟

Restoration of Buildings and Monuments Pub Date : 2015-02-01 DOI: 10.1515/rbm-2015-0005

D. Van Gemert, E. Toumbakari, S. Ignoul, K. Brosens

引用次数: 2

Preventive Conservation of Historic Buildings 历史建筑的预防性保育

Restoration of Buildings and Monuments Pub Date : 2015-01-01 DOI: 10.1515/rbm-2015-0008

K. van Balen

引用次数: 5

Capillary Absorption and Chloride Penetration into High-Performance Fiber-Reinforced Cement-Based Composites (HPFRCC) as Influenced by Tensile Stress and Self-Healing 拉伸应力和自愈对高性能纤维增强水泥基复合材料(HPFRCC)毛细吸收和氯化物渗透的影响

Restoration of Buildings and Monuments Pub Date : 2015-01-01 DOI: 10.1515/rbm-2015-0009

F. Wittmann, Penggang Wang, Peng Zhang, T. Zhao

引用次数: 2

Restoration of Buildings and Monuments 修复建筑物及古迹

Restoration of Buildings and Monuments Pub Date : 2015-01-01 DOI: 10.1515/rbm-2015-1000

Ö. Cizer

引用次数: 7

Enhancement of Theory and Practice in Restoration and Renovation of Buildings and Monuments needs Attitude, Knowledge and Skill: Contribution of a Man and a Journal 加强建筑古迹修复和翻新的理论和实践需要态度、知识和技能:一个人和一份杂志的贡献

Restoration of Buildings and Monuments Pub Date : 2014-12-01 DOI: 10.1515/rbm14.20.6-0035

D. Van Gemert

引用次数: 0

Testing New Water Repellent Solutions to Protect Deteriorated Granite 测试新的防水解决方案，以保护老化的花岗岩

Restoration of Buildings and Monuments Pub Date : 2014-12-01 DOI: 10.1515/rbm14.20.6-0040

D. Costa, J. Delgado Rodrigues

引用次数: 0