{"id":20258,"date":"2025-07-15T19:56:41","date_gmt":"2025-07-15T17:56:41","guid":{"rendered":"https:\/\/abgroup-eg.com\/?post_type=portfolio&p=20258"},"modified":"2025-08-10T16:06:02","modified_gmt":"2025-08-10T14:06:02","slug":"%d8%ad%d8%ac%d8%a7%d8%b1%d8%a9-%d9%83%d8%b3%d8%b1-%d8%a7%d9%84%d8%a3%d9%85%d9%88%d8%a7%d8%ac","status":"publish","type":"portfolio","link":"https:\/\/abgroup-eg.com\/en\/section-details\/%d8%ad%d8%ac%d8%a7%d8%b1%d8%a9-%d9%83%d8%b3%d8%b1-%d8%a7%d9%84%d8%a3%d9%85%d9%88%d8%a7%d8%ac\/","title":{"rendered":"Breakwater Stones"},"content":{"rendered":"

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1. Core Physical Specifications<\/div>\n
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Parameter Standard Range Int’l Standards Egyptian Quarry Compliance<\/div>\n
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Density \u22652.6 g\/cm\u00ef\u00bf\u00bd EN 13383 \/ CIRIA\/CUR 2.65\u00ef\u00bf\u00bd2.75 g\/cm\u00ef\u00bf\u00bd<\/div>\n
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Compressive Strength 120\u00ef\u00bf\u00bd180 MPa ASTM C170 \/ BS EN 1926 130\u00ef\u00bf\u00bd160 MPa<\/div>\n
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Water Absorption \u22640.6% ASTM C97 0.2\u00ef\u00bf\u00bd0.5%<\/div>\n
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Abrasion Resistance Los Angeles (LA) \u226425 ASTM C131 LA 18\u00ef\u00bf\u00bd22<\/div>\n
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Freeze-Thaw Loss \u22645% (after 15 cycles) ASTM D5312 \u22643%<\/div>\n
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Solubility \u22643% (in saline water) ASTM D3042 \u22641.8%<\/div>\n
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2. Grading (Size\/Weight Classification)<\/div>\n
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Class Weight Range Typical Dimensions Use Case<\/div>\n
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Class IV 1\u00ef\u00bf\u00bd3 tonnes 80\u00ef\u00bf\u00bd120 cm Core layer<\/div>\n
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Class V 3\u00ef\u00bf\u00bd6 tonnes 120\u00ef\u00bf\u00bd180 cm Primary armor layer<\/div>\n
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Class VI 6\u00ef\u00bf\u00bd10 tonnes 180\u00ef\u00bf\u00bd250 cm High-energy zones\/harbors<\/div>\n
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Note: Beni Hassan quarries specialize in Class IV\u00ef\u00bf\u00bdV. Class VI requires selective quarrying.<\/div>\n
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3. Shape & Surface Requirements<\/div>\n
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Angularity Index: \u226580% (min. 3 mechanically fractured faces)<\/div>\n
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Interlock Ratio: 1:1.5 (height:width) for stability<\/div>\n
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Fines Content: \u22643% (material 3 tonnes<\/div>\n
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Marking: Spray-painted class code (e.g., BW-V) + quarry ID<\/div>\n
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6. African Project Adaptations<\/div>\n
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West Africa: Add mangrove root penetration resistance test<\/div>\n
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East Africa: Increase density to \u22652.7 g\/cm\u00ef\u00bf\u00bd for cyclone zones<\/div>\n
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Certification: Mandatory SGS or Bureau Veritas inspection for:<\/div>\n
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Angola, Nigeria, Mozambique (petroleum hub requirements)<\/div>\n
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\ud83d\udcdc Sample Tender Specification Clause<\/div>\n
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*”Breakwater stones shall be Class V (3\u00ef\u00bf\u00bd6 tonne) natural limestone, quarry-run from Beni<\/div>\n
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Hassan formation.<\/div>\n
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Conforming to EN 13383 & CIRIA Rock Manual. Densit<\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

1. Core Physical Specifications Parameter Standard Range Int’l Standards Egyptian Quarry Compliance Density \u22652.6 g\/cm\u00ef\u00bf\u00bd EN 13383 \/ CIRIA\/CUR 2.65\u00ef\u00bf\u00bd2.75<\/p>\n","protected":false},"featured_media":20259,"menu_order":0,"template":"","project-cat":[125],"class_list":["post-20258","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","project-cat-mining-department"],"yoast_head":"\nBreakwater Stones - \u0634\u0631\u0643\u0629 \u0625\u064a \u0628\u064a \u062c\u0631\u0648\u0628 | AB Group<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/abgroup-eg.com\/section-details\/\u062d\u062c\u0627\u0631\u0629-\u0643\u0633\u0631-\u0627\u0644\u0623\u0645\u0648\u0627\u062c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[:ar]\u062d\u062c\u0627\u0631\u0629 \u0643\u0633\u0631 \u0627\u0644\u0623\u0645\u0648\u0627\u062c[:en]Breakwater Stones[:] - \u0634\u0631\u0643\u0629 \u0625\u064a \u0628\u064a \u062c\u0631\u0648\u0628 | AB Group\" \/>\n<meta property=\"og:description\" content=\"1. 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