{"id":3347,"date":"2026-05-20T09:27:45","date_gmt":"2026-05-20T06:27:45","guid":{"rendered":"https:\/\/www.letoon.com.tr\/eng\/?page_id=3347"},"modified":"2026-05-20T09:27:46","modified_gmt":"2026-05-20T06:27:46","slug":"post-earthquake-intervention-ethics-and-surface-health-in-historical-buildings","status":"publish","type":"page","link":"https:\/\/www.letoon.com.tr\/eng\/post-earthquake-intervention-ethics-and-surface-health-in-historical-buildings\/","title":{"rendered":"Post-Earthquake Intervention Ethics and Surface Health in Historical Buildings"},"content":{"rendered":"\n<!-- HMSA ARTICLE START -->\n<div id=\"hmsa-static-article\">\n\n    <style>\n        \/* --- GENERAL LAYOUT AND TYPOGRAPHY --- *\/\n        #hmsa-static-article {\n            font-family: Arial, sans-serif;\n            color: #333;\n            max-width: 900px;\n            margin: 0 auto;\n            padding: 20px;\n            box-sizing: border-box;\n            background-color: #fff;\n        }\n\n     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margin-bottom: 40px; }\n            .hmsa-item { position: relative; transform: none; margin-bottom: 20px; width: 100%; flex-direction: row; text-align: left; align-items: flex-start; }\n            .hmsa-icon-box { margin-right: 15px; flex-shrink: 0; margin-bottom: 0; }\n            .hmsa-info-card { text-align: left; width: auto; flex-grow: 1; }\n        }\n    <\/style>\n\n    <!-- CATEGORY LABEL -->\n    <div style=\"font-size:12px; color:#ba372a; font-weight:bold; text-transform:uppercase; margin-bottom:10px;\">\n        HMSA Academy\n    <\/div>\n\n    <!-- TITLE -->\n    <h1 class=\"hmsa-article-title\">Post-Earthquake Intervention Ethics and Surface Health in Historical Buildings<\/h1>\n\n    <!-- AUTHOR INFO -->\n    <div class=\"hmsa-author\">\n        Author: <strong>M\u00fcge G\u00fcnel<\/strong> <span> \/\/ MSc. Architect &#038; Restoration Specialist<\/span>\n    <\/div>\n\n    <!-- INTRODUCTION (ABSTRACT) TEXT -->\n    <div class=\"hmsa-text hmsa-intro\">\n        Post-earthquake interventions in historical buildings should not be considered merely as a structural repair process; they must be approached as a scientific, ethical, and sustainable strategy for the preservation of cultural heritage. Pathologies that develop over time in historical building materials, such as moisture movements, salt crystallization, biological formations, and material fatigue, significantly reduce the buildings&#8217; resilience against earthquakes. This study examines the concepts of surface health, building pathology, the principle of minimum intervention, and material compatibility in post-earthquake restoration processes from a technical perspective. It is emphasized that preserving the physical behavior of the surface is just as critical as structural strengthening for sustainable post-disaster conservation.\n    <\/div>\n\n    <!-- KEYWORDS -->\n    <div class=\"hmsa-keywords-section\">\n        <span class=\"hmsa-key-label\">Keywords:<\/span>\n        <span class=\"hmsa-hashtag\">#Earthquake<\/span>\n        <span class=\"hmsa-hashtag\">#RestorationEthics<\/span>\n        <span class=\"hmsa-hashtag\">#SurfaceHealth<\/span>\n        <span class=\"hmsa-hashtag\">#BuildingPathology<\/span>\n        <span class=\"hmsa-hashtag\">#CulturalHeritage<\/span>\n        <span class=\"hmsa-hashtag\">#MinimumIntervention<\/span>\n        <span class=\"hmsa-hashtag\">#SustainableConservation<\/span>\n    <\/div>\n\n    <!-- SUBHEADING 1 -->\n    <h3 class=\"hmsa-subhead\">1. Introduction: The Evolution of Post-Earthquake Conservation Approaches<\/h3>\n    <p class=\"hmsa-text\">\n        Earthquakes cause not only structural system damage in historical buildings but also micro-level deterioration that threatens the physical integrity of the material. While traditional restoration concepts mostly focus on visible structural damage, contemporary conservation approaches require an interdisciplinary process that also evaluates the building surface and material behavior.\n    <\/p>\n    <p class=\"hmsa-text\">\n        Natural stone, brick, and traditional mortar systems suffer strength loss over time due to moisture movements, salt crystallization, biological formations, and environmental impacts. Micro-cracks caused by earthquakes accelerate these deterioration processes, making the building more vulnerable to future risks. Therefore, the post-earthquake intervention process should aim not only to rebuild the structure but also to preserve the original physical behavior of the material.\n    <\/p>\n\n    <!-- SUBHEADING 2 -->\n    <h3 class=\"hmsa-subhead\">2. Analyzing Building Pathology and Reading the Surface<\/h3>\n    <p class=\"hmsa-text\">\n        The first stage of post-earthquake intervention is analyzing the current state of the building using scientific methods. Interventions carried out without proper diagnosis during the conservation process can cause irreversible losses in historical buildings. In this process, the following must be considered as a whole:\n    <\/p>\n    <ul class=\"hmsa-list\">\n        <li>Micro and macro crack mapping,<\/li>\n        <li>Moisture and salt profile analyses,<\/li>\n        <li>Stone and mortar characterization,<\/li>\n        <li>Examination of surface weathering,<\/li>\n        <li>Static evaluation of the structural system.<\/li>\n    <\/ul>\n    <p class=\"hmsa-text\">\n        Especially in natural stone buildings, micro-cracks formed after earthquakes allow water to penetrate the structure much faster. Water entering the pore system carries soluble salts, accelerating crystallization processes. Over time, this results in surface losses, delamination, and a decrease in the mechanical strength of the stone. Consequently, surface health is a conservation parameter as important as post-earthquake structural safety.\n    <\/p>\n\n    <!-- SUBHEADING 3 -->\n    <h3 class=\"hmsa-subhead\">3. Intervention Ethics: Minimum Intervention and Material Compatibility<\/h3>\n    <p class=\"hmsa-text\">\n        The pressure for urgent post-earthquake intervention often leads to fast but incompatible applications. However, the fundamental principle of conservation ethics is to intervene without harming the historical structure. While high-pressure cleaning applications can destroy the natural patina of the stone, cement-based hard completion mortars or surface layers with low vapor permeability can disrupt the moisture balance of the building.\n    <\/p>\n    <p class=\"hmsa-text\">\n        Traditional materials used in historical buildings generally have an open-pore structure. This structure allows water vapor to be discharged from the surface in a controlled manner. Interventions that prevent vapor permeability cause moisture to become trapped inside the structure. As a result:\n    <\/p>\n    <ul class=\"hmsa-list\">\n        <li>Salt efflorescence,<\/li>\n        <li>Surface blistering,<\/li>\n        <li>Biological formations and microorganism growth,<\/li>\n        <li>Stone losses become inevitable.<\/li>\n    <\/ul>\n    <p class=\"hmsa-text\">\n        Therefore, in the restoration process, the principle of minimum intervention, reversible applications, physical compatibility with original materials, and the use of breathable systems must form the foundation of the conservation process.\n    <\/p>\n\n    <!-- SUBHEADING 4 -->\n    <h3 class=\"hmsa-subhead\">4. Surface Health and Sustainable Conservation<\/h3>\n    <p class=\"hmsa-text\">\n        Strengthening the load-bearing system alone is not sufficient in post-earthquake restoration. The outer shell of the building, namely the surface system, must also be protected. This is because physical deteriorations occurring on stone surfaces directly affect the holistic strength of the building over time. In a sustainable conservation approach; surface moisture control, salt management, biological formation cleaning, regular maintenance systems, and periodic monitoring studies are integral parts of a long-term conservation strategy.\n    <\/p>\n\n    <span class=\"hmsa-caption\" style=\"margin-bottom:10px;\">Figure 1. Sustainable Surface Health Cycle<\/span>\n\n    <!-- DIAGRAM (CYCLE) -->\n    <div class=\"hmsa-cycle-wrapper\">\n        <div class=\"hmsa-cycle-track\"><\/div>\n        <div class=\"hmsa-core\">\n            <div style=\"font-weight:bold; font-size:11px; color:#333; margin-top:5px;\">SURFACE HEALTH<br>CYCLE<\/div>\n        <\/div>\n        \n        <div class=\"hmsa-item hmsa-pos-1\">\n            <div class=\"hmsa-info-card\"><span class=\"hmsa-info-title\">MOISTURE CONTROL<\/span><p class=\"hmsa-info-text\">Ensuring surface moisture balance.<\/p><\/div>\n        <\/div>\n        <div class=\"hmsa-item hmsa-pos-2\">\n            <div class=\"hmsa-info-card\"><span class=\"hmsa-info-title\">SALT MANAGEMENT<\/span><p class=\"hmsa-info-text\">Preventing salt crystallization.<\/p><\/div>\n        <\/div>\n        <div class=\"hmsa-item hmsa-pos-3\">\n            <div class=\"hmsa-info-card\"><span class=\"hmsa-info-title\">BIO-CLEANING<\/span><p class=\"hmsa-info-text\">Removal of harmful formations.<\/p><\/div>\n        <\/div>\n        <div class=\"hmsa-item hmsa-pos-4\">\n            <div class=\"hmsa-info-card\"><span class=\"hmsa-info-title\">MAINTENANCE<\/span><p class=\"hmsa-info-text\">Regular and periodic applications.<\/p><\/div>\n        <\/div>\n        <div class=\"hmsa-item hmsa-pos-5\">\n            <div class=\"hmsa-info-card\"><span class=\"hmsa-info-title\">MONITORING<\/span><p class=\"hmsa-info-text\">Tracking building behavior.<\/p><\/div>\n        <\/div>\n        <div class=\"hmsa-item hmsa-pos-6\">\n            <div class=\"hmsa-info-card\"><span class=\"hmsa-info-title\">RESILIENCE<\/span><p class=\"hmsa-info-text\">Resistance against future disasters.<\/p><\/div>\n        <\/div>\n    <\/div>\n    <!-- \/DIAGRAM -->\n\n    <!-- SUBHEADING 5 -->\n    <h3 class=\"hmsa-subhead\">5. Conclusion<\/h3>\n    <p class=\"hmsa-text\">\n        Modern restoration concepts evaluate historical buildings not merely as architectural objects, but as living systems interacting with physical, chemical, and environmental processes. In post-earthquake interventions, preserving not only the structural integrity but also the surface health, moisture balance, and original material behavior is a fundamental responsibility.\n    <\/p>\n    <p class=\"hmsa-text\">\n        Although incorrect interventions may seem to consolidate the building in the short term, they can accelerate material deterioration in the long term, causing greater losses. Therefore, the conservation process requires a scientific approach where architecture, engineering, materials science, and building physics are considered together. Cultural heritage structures are not only traces of the past but also shared memory spaces that must be transferred to future generations. Post-earthquake restoration is one of the most critical tools for preserving this memory.\n    <\/p>\n\n    <!-- GLOSSARY OF TERMS (Integrated as a Table) -->\n    <h3 class=\"hmsa-subhead\">HMSA Glossary of Terms<\/h3>\n    <div class=\"hmsa-table-wrapper\">\n        <table class=\"hmsa-table\">\n            <thead>\n                <tr>\n                    <th width=\"30%\">Term<\/th>\n                    <th>Description<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td><strong>Building Pathology<\/strong><\/td>\n                    <td>The field of analysis that examines the causes of physical, chemical, and biological deteriorations occurring in historical buildings.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Minimum Intervention<\/strong><\/td>\n                    <td>A conservation approach based on intervening with the original material of the building to the least extent possible during conservation works.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Surface Health<\/strong><\/td>\n                    <td>Refers to the evaluation of a building surface in terms of moisture balance, physical strength, pore structure, and biological cleanliness.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Salt Crystallization<\/strong><\/td>\n                    <td>The process where dissolved salts crystallize in stone pores, creating pressure and causing surface losses.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Capillary Water Movement<\/strong><\/td>\n                    <td>The phenomenon of water rising against gravity within porous building materials.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Vapor Diffusion<\/strong><\/td>\n                    <td>The process of water vapor passing through a building element from high vapor pressure to low vapor pressure.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Consolidation<\/strong><\/td>\n                    <td>The process of increasing the strength of weakened building materials with appropriate strengthening applications.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Biodeterioration<\/strong><\/td>\n                    <td>The process of physical and chemical destruction caused by moss, fungi, lichens, and bacteria on building surfaces.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Material Compatibility<\/strong><\/td>\n                    <td>The state in which a newly applied material physically, chemically, and mechanically aligns with the original building material.<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Sustainable Conservation<\/strong><\/td>\n                    <td>A scientific conservation approach aiming to preserve the long-term physical health and authenticity of cultural heritage.<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div>\n\n    <!-- REFERENCES -->\n    <div class=\"hmsa-ref-section\">\n        <span class=\"hmsa-ref-title\">References<\/span>\n        <ul class=\"hmsa-ref-list\">\n            <li>Torraca, G. (2009). Lectures on Materials Science for Architectural Conservation. ICCROM.<\/li>\n            <li>Hens, H. (2017). Building Physics: Heat, Air and Moisture. Ernst &#038; Sohn.<\/li>\n            <li>Massari, G., &#038; Massari, I. (1993). Damp Buildings, Old and New. ICCROM.<\/li>\n            <li>ICOMOS (1964). International Charter for the Conservation and Restoration of Monuments and Sites (Venice Charter).<\/li>\n        <\/ul>\n    <\/div>\n\n<\/div>\n<!-- HMSA ARTICLE END -->\n","protected":false},"excerpt":{"rendered":"<p>HMSA Academy Post-Earthquake Intervention Ethics and Surface Health in Historical Buildings Author: M\u00fcge G\u00fcnel \/\/ MSc. 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