{"id":16942,"date":"2026-06-01T02:23:43","date_gmt":"2026-06-01T02:23:43","guid":{"rendered":"https:\/\/www.hnjournal.net\/7-6-13\/"},"modified":"2026-06-01T02:23:43","modified_gmt":"2026-06-01T02:23:43","slug":"7-6-13","status":"publish","type":"page","link":"https:\/\/www.hnjournal.net\/ar\/7-6-13\/","title":{"rendered":"Article 13"},"content":{"rendered":"<div class=\"journal-article\" style=\"margin-bottom: 20px;\"><h3 style='text-align: left; font-family:Times New Roman;'>Comparative Analysis of Steel and Micro-Concrete Jacketing for RC Columns in Coastal Environments: The Case of Port Sudan<\/h3><h4 style='text-align: right; font-family:Simplified Arabic;'>\u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0644\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u062d\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629: \u062d\u0627\u0644\u0629 \u0628\u0648\u0631\u062a\u0633\u0648\u062f\u0627\u0646<\/h4><p style='text-align: left; font-weight:bold;'>Omer Hasan\u00b9, Abdal La Eissa Abdelkarim\u00b2, Khaled Abdelrazik Ahmed\u00b3<\/p><div style='direction: ltr; text-align: left; font-size:12px; line-height:1.5;'><p>\u00b9 M.Sc. Candidate, Faculty of Engineering, Red Sea University, Sudan<\/p><p>\u00b2 Assistant Professor, Department of Civil Engineering, Faculty of Engineering, Red Sea University, Sudan<\/p><p>\u00b3 Assistant Professor, Department of Mechanical Engineering, Faculty of Engineering, Red Sea University, Sudan<\/p><\/div><p style='text-align:left;'><strong>DOI:<\/strong> <a href='https:\/\/doi.org\/https:\/\/doi.org\/10.53796\/hnsj76\/13' target='_blank' rel='noopener'>https:\/\/doi.org\/10.53796\/hnsj76\/13<\/a><\/p><p style='text-align: left;'><strong>Arabic Scientific Research Identifier:<\/strong> <a href='https:\/\/arsri.org\/10000\/76\/13' target='_blank' rel='noopener'>https:\/\/arsri.org\/10000\/76\/13<\/a><\/p><p style='text-align: left;'><strong>Volume (7) Issue (6). Pages:<\/strong> 196 - 210<\/p><p style='text-align: left;'><strong>Received at:<\/strong> 2026-05-10 | <strong>Accepted at:<\/strong> 2026-05-15 | <strong>Published at:<\/strong> 2026-06-01<\/p><p><a href='\/volume7\/issue6\/7-6-13.pdf' target='_blank' rel='noopener' style='background-color:green;color:white;padding:10px 15px;text-decoration:none;border-radius:5px;'>Download PDF<\/a><\/p>\r\n<style>\r\n.hnsj-cite-btn{\r\n  display:inline-flex; gap:8px; align-items:center;\r\n  padding:10px 14px; border-radius:10px;\r\n  border:1px solid #0b5ed7; background:#0b5ed7; color:#fff;\r\n  cursor:pointer; font-weight:700;\r\n}\r\n.hnsj-cite-btn:hover{background:#084bb0;border-color:#084bb0}\r\n.hnsj-cite-note{display:block;margin-top:6px;font-size:13px;opacity:.85}\r\n\r\n.hnsj-modal-backdrop{\r\n  position:fixed; inset:0; background:rgba(0,0,0,.55);\r\n  display:none; z-index:99998;\r\n}\r\n.hnsj-modal{\r\n  position:fixed; left:50%; top:50%; transform:translate(-50%,-50%);\r\n  width:min(760px,94vw); background:#fff; border-radius:14px;\r\n  box-shadow:0 12px 35px rgba(0,0,0,.28);\r\n  display:none; z-index:99999; overflow:hidden;\r\n  border:1px solid rgba(0,0,0,.08);\r\n}\r\n\r\n.hnsj-modal-header{\r\n  display:flex; justify-content:space-between; align-items:center;\r\n  padding:14px 16px; border-bottom:1px solid #eee; background:#f8fafc;\r\n}\r\n.hnsj-modal-title{font-size:16px;font-weight:800;color:#111827}\r\n.hnsj-modal-close{\r\n  border:1px solid #d1d5db; background:#fff;\r\n  width:34px; height:34px; border-radius:10px;\r\n  font-size:18px; cursor:pointer; line-height:0; color:#111827;\r\n}\r\n.hnsj-modal-close:hover{background:#f3f4f6}\r\n\r\n.hnsj-tabs{\r\n  display:flex; gap:10px; padding:10px 16px;\r\n  border-bottom:1px solid #f0f0f0; justify-content:flex-end;\r\n}\r\n.hnsj-tab{\r\n  padding:10px 14px; border-radius:10px;\r\n  border:1px solid #cfcfcf; background:#f3f4f6;\r\n  cursor:pointer; font-weight:800; color:#111827;\r\n}\r\n.hnsj-tab:hover{background:#e5e7eb;border-color:#9ca3af}\r\n.hnsj-tab.active{\r\n  background:#0b5ed7; border-color:#0b5ed7; color:#fff;\r\n  box-shadow:0 2px 10px rgba(11,94,215,.18);\r\n}\r\n\r\n.hnsj-modal-body{padding:14px 16px}\r\n.hnsj-row{\r\n  display:flex; gap:10px; flex-wrap:wrap; align-items:center;\r\n  margin-bottom:10px; justify-content:flex-end;\r\n}\r\n.hnsj-select{\r\n  padding:10px 12px; border-radius:10px;\r\n  border:1px solid #cfcfcf; min-width:220px;\r\n  background:#fff; color:#111827; font-weight:700;\r\n}\r\n.hnsj-copy{\r\n  padding:10px 14px; border-radius:10px;\r\n  border:1px solid #0b5ed7; background:#0b5ed7; color:#fff;\r\n  cursor:pointer; font-weight:800;\r\n}\r\n.hnsj-copy:hover{background:#084bb0;border-color:#084bb0}\r\n\r\n.hnsj-textarea{\r\n  width:100%; min-height:130px; padding:12px;\r\n  border-radius:12px; border:1px solid #cfcfcf;\r\n  line-height:1.7; resize:vertical; color:#111827; background:#fff;\r\n}\r\n.hnsj-actions{display:flex; justify-content:space-between; align-items:center; margin-top:10px; gap:10px; flex-wrap:wrap;}\r\n.hnsj-dl{\r\n  padding:10px 14px;\r\n  border-radius:10px;\r\n  border:1px solid #0b5ed7;\r\n  background:#0b5ed7;\r\n  color:#fff;\r\n  cursor:pointer;\r\n  font-weight:800;\r\n}\r\n.hnsj-dl:hover{background:#084bb0;border-color:#084bb0}\r\n\/* Force the citation modal UI to be independent from site RTL\/LTR *\/\r\n.hnsj-modal,\r\n.hnsj-modal *{\r\n  direction: ltr;\r\n  text-align: left;\r\n}\r\n\r\n\/* Keep the header title readable *\/\r\n.hnsj-modal-header{\r\n  direction: ltr;\r\n}\r\n<\/style>\r\n\r\n<script>\r\n(function(){\r\n  function slugifyFileName(s){\r\n    return (s || 'citation')\r\n      .toString()\r\n      .trim()\r\n      .replace(\/^https?:\\\/\\\/\/i,'')\r\n      .replace(\/[^a-z0-9]+\/gi,'-')\r\n      .replace(\/-+\/g,'-')\r\n      .replace(\/^-|-$\/g,'')\r\n      .toLowerCase();\r\n  }\r\n\r\n  function downloadTextFile(filename, content, mime){\r\n    var blob = new Blob([content], { type: mime || 'text\/plain;charset=utf-8' });\r\n    var url = URL.createObjectURL(blob);\r\n    var a = document.createElement('a');\r\n    a.href = url;\r\n    a.download = filename;\r\n    document.body.appendChild(a);\r\n    a.click();\r\n    a.remove();\r\n    setTimeout(function(){ URL.revokeObjectURL(url); }, 500);\r\n  }\r\n\r\n  function splitAuthors(str){\r\n    if(!str) return [];\r\n    return str\r\n      .split(\/,|\u061b|\u060c|;|\\n\/g)\r\n      .map(s => s.trim())\r\n      .filter(Boolean);\r\n  }\r\n\r\n  function buildRIS(m, langKey){\r\n    const title   = (langKey === 'ar') ? 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E., Ahmed K. A.. (2026). Comparative Analysis of Steel and Micro-Concrete Jacketing for RC Columns in Coastal Environments: The Case of Port Sudan. Humanities &amp; Natural Sciences Journal, 7(6). https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;Chicago&quot;:&quot;Hasan Omer, Abdelkarim Abdal La Eissa, Ahmed Khaled Abdelrazik. 2026. \\&quot;Comparative Analysis of Steel and Micro-Concrete Jacketing for RC Columns in Coastal Environments: The Case of Port Sudan.\\&quot; Humanities &amp; Natural Sciences Journal 7, no. 6. https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;Harvard&quot;:&quot;Hasan O., Abdelkarim A. E., Ahmed K. A.. 2026. Comparative Analysis of Steel and Micro-Concrete Jacketing for RC Columns in Coastal Environments: The Case of Port Sudan. Humanities &amp; Natural Sciences Journal. [Internet] 2026-06-01. [Cited 2026-06-01]. 7(6). Available at: https:\\\/\\\/www.hnjournal.net\\\/ar\\\/7-6-13\\\/. https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;Vancouver&quot;:&quot;Hasan O., Abdelkarim A. E., Ahmed K. A.. Comparative Analysis of Steel and Micro-Concrete Jacketing for RC Columns in Coastal Environments: The Case of Port Sudan. Humanities &amp; Natural Sciences Journal. [Internet]. 2026-06-01; 7(6). Available from: https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;IEEE&quot;:&quot;Hasan O., Abdelkarim A. E., Ahmed K. A., \\&quot;Comparative Analysis of Steel and Micro-Concrete Jacketing for RC Columns in Coastal Environments: The Case of Port Sudan,\\&quot; Humanities &amp; Natural Sciences Journal, vol. 7, no. 6, 2026. https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;MLA&quot;:&quot;Hasan Omer, Abdelkarim Abdal La Eissa, Ahmed Khaled Abdelrazik. \\&quot;Comparative Analysis of Steel and Micro-Concrete Jacketing for RC Columns in Coastal Environments: The Case of Port Sudan.\\&quot; Humanities &amp; Natural Sciences Journal, vol. 7, no. 6, 2026-06-01, https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;}' data-cit-ar='{&quot;APA&quot;:&quot;Hasan O, Abdelkarim A. E, Ahmed K. A. (2026). \u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0644\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u062d\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629: \u062d\u0627\u0644\u0629 \u0628\u0648\u0631\u062a\u0633\u0648\u062f\u0627\u0646. \u0645\u062c\u0644\u0629 \u0627\u0644\u0639\u0644\u0648\u0645 \u0627\u0644\u0627\u0646\u0633\u0627\u0646\u064a\u0629 \u0648\u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629\u060c 7(6). https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;Chicago&quot;:&quot;Hasan Omer, Abdelkarim Abdal La Eissa, Ahmed Khaled Abdelrazik. 2026. \u00ab\u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0644\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u062d\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629: \u062d\u0627\u0644\u0629 \u0628\u0648\u0631\u062a\u0633\u0648\u062f\u0627\u0646\u00bb. \u0645\u062c\u0644\u0629 \u0627\u0644\u0639\u0644\u0648\u0645 \u0627\u0644\u0627\u0646\u0633\u0627\u0646\u064a\u0629 \u0648\u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629\u060c 7(6). https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;Harvard&quot;:&quot;Hasan O, Abdelkarim A. E, Ahmed K. A. \u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0644\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u062d\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629: \u062d\u0627\u0644\u0629 \u0628\u0648\u0631\u062a\u0633\u0648\u062f\u0627\u0646. \u0645\u062c\u0644\u0629 \u0627\u0644\u0639\u0644\u0648\u0645 \u0627\u0644\u0627\u0646\u0633\u0627\u0646\u064a\u0629 \u0648\u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629. [\u0627\u0646\u062a\u0631\u0646\u062a] 2026-06-01. [\u062a\u0627\u0631\u064a\u062e \u0627\u0644\u0648\u0635\u0648\u0644 2026-06-01]. 7(6). \u0645\u062a\u0627\u062d \u0639\u0644\u0649: https:\\\/\\\/www.hnjournal.net\\\/ar\\\/7-6-13\\\/. https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;Vancouver&quot;:&quot;Hasan O, Abdelkarim A. E, Ahmed K. A. \u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0644\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u062d\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629: \u062d\u0627\u0644\u0629 \u0628\u0648\u0631\u062a\u0633\u0648\u062f\u0627\u0646. \u0645\u062c\u0644\u0629 \u0627\u0644\u0639\u0644\u0648\u0645 \u0627\u0644\u0627\u0646\u0633\u0627\u0646\u064a\u0629 \u0648\u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629. [\u0627\u0646\u062a\u0631\u0646\u062a]. 2026-06-01\u061b 7(6). \u0645\u062a\u0627\u062d \u0645\u0646: https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;IEEE&quot;:&quot;Hasan O, Abdelkarim A. E, Ahmed K. A. \u00ab\u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0644\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u062d\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629: \u062d\u0627\u0644\u0629 \u0628\u0648\u0631\u062a\u0633\u0648\u062f\u0627\u0646\u00bb. \u0645\u062c\u0644\u0629 \u0627\u0644\u0639\u0644\u0648\u0645 \u0627\u0644\u0627\u0646\u0633\u0627\u0646\u064a\u0629 \u0648\u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629\u060c \u0645 7\u060c \u0639 6\u060c 2026. https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;,&quot;MLA&quot;:&quot;Hasan Omer, Abdelkarim Abdal La Eissa, Ahmed Khaled Abdelrazik. \u00ab\u062a\u062d\u0644\u064a\u0644 \u0645\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0644\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u062d\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629: \u062d\u0627\u0644\u0629 \u0628\u0648\u0631\u062a\u0633\u0648\u062f\u0627\u0646\u00bb. \u0645\u062c\u0644\u0629 \u0627\u0644\u0639\u0644\u0648\u0645 \u0627\u0644\u0627\u0646\u0633\u0627\u0646\u064a\u0629 \u0648\u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629\u060c \u0645 7\u060c \u0639 6\u060c 2026-06-01\u060c https:\\\/\\\/doi.org\\\/10.53796\\\/hnsj76\\\/13&quot;}'>\r\n    <div class='hnsj-modal-header'>\r\n    <div class='hnsj-modal-title'>Cite \/ \u0627\u0644\u0627\u0633\u062a\u0634\u0647\u0627\u062f<\/div>\r\n    <button class='hnsj-modal-close' type='button' data-hnsj-close aria-label='Close'>\u00d7<\/button>\r\n    <\/div>\r\n\r\n    <div class='hnsj-tabs'>\r\n      <button type='button' class='hnsj-tab active' data-lang='en'>English (Roman)<\/button>\r\n      <button type='button' class='hnsj-tab' data-lang='ar'>\u0627\u0644\u0639\u0631\u0628\u064a\u0629<\/button>\r\n    <\/div>\r\n\r\n    <div class='hnsj-modal-body'>\r\n      <div class='hnsj-row'>\r\n        <button type='button' class='hnsj-copy' data-hnsj-copy>Copy<\/button>\r\n        <select class='hnsj-select' data-hnsj-style><\/select>\r\n        <\/div>\r\n\r\n      <textarea class='hnsj-textarea' data-hnsj-box readonly><\/textarea>\r\n\r\n      <div class='hnsj-actions'>\r\n        <div style='display:flex; gap:10px; flex-wrap:wrap;'>\r\n          <button type='button' class='hnsj-dl' data-hnsj-dl='ris'>Download RIS<\/button>\r\n          <button type='button' class='hnsj-dl' data-hnsj-dl='bib'>Download BibTeX<\/button>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n<\/div>\r\n<p style='text-align:justify; direction:ltr;'><strong>Abstract:<\/strong> This study compares the technical and economic performance of steel jacketing and micro-concrete jacketing for strengthening reinforced concrete columns in the aggressive coastal environment of Port Sudan. A representative 300 \u00d7 400 mm RC column with an original ultimate axial capacity of 1,841.6 kN was evaluated using steel jacketing designed according to BS 5950-1:2000 and micro-concrete jacketing designed according to BS 8110-1:1997. The results show that steel jacketing increases axial capacity by 114% to 3,953.6 kN, while micro-concrete jacketing achieves a higher increase of 228% to 6,048.8 kN. Although both methods have nearly similar direct costs, micro-concrete jacketing offers better capacity gain per unit cost, whereas steel jacketing provides faster execution, minimal spatial intrusion, immediate load transfer, and reduced disruption to occupied buildings. In Port Sudan\u2019s marine conditions, where chloride exposure, humidity, high temperatures, and post-conflict supply constraints affect construction durability and logistics, the selection of a strengthening technique must balance structural performance, lifecycle cost, architectural impact, and maintenance requirements. The study concludes that steel jacketing is more suitable for congested and occupancy-sensitive buildings, while micro-concrete jacketing is preferable for heavily loaded columns where dimensional enlargement is acceptable.<\/p><p style='text-align:left; direction:ltr;'><strong>Keywords: <\/strong> RC column strengthening; steel jacketing; micro-concrete jacketing; coastal environment; Port Sudan.<\/p><p style='text-align:justify; direction:rtl;'><strong>\u0627\u0644\u0645\u0633\u062a\u062e\u0644\u0635: <\/strong> \u062a\u0642\u0627\u0631\u0646 \u0647\u0630\u0647 \u0627\u0644\u062f\u0631\u0627\u0633\u0629 \u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0641\u0646\u064a \u0648\u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f\u064a \u0644\u0643\u0644 \u0645\u0646 \u0627\u0644\u062a\u062f\u0639\u064a\u0645 \u0628\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a 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\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u0627\u0644\u0645\u0635\u0645\u0645 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0648\u0627\u0635\u0641\u0629 BS 5950-1:2000\u060c \u0648\u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a \u0627\u0644\u062f\u0642\u064a\u0642 \u0627\u0644\u0645\u0635\u0645\u0645 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0648\u0627\u0635\u0641\u0629 BS 8110-1:1997. \u0623\u0638\u0647\u0631\u062a \u0627\u0644\u0646\u062a\u0627\u0626\u062c \u0623\u0646 \u0627\u0644\u0642\u0645\u064a\u0635 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a \u064a\u0632\u064a\u062f \u0627\u0644\u0642\u062f\u0631\u0629 \u0627\u0644\u0645\u062d\u0648\u0631\u064a\u0629 \u0628\u0646\u0633\u0628\u0629 114% \u0644\u062a\u0635\u0644 \u0625\u0644\u0649 3,953.6 \u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646\u060c \u0628\u064a\u0646\u0645\u0627 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