حَنـان📷.
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Monday 27 October 2025 20:37:06 GMT
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الله حلمي 😞
2026-07-03 21:01:59
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الله يديمها 🥹
2025-10-27 21:22:25
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الله يوفقك يارب🥰🥰
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![[ Ep - 33 ] What is bitumen and why is it used for road surfacing? Answer -- Bitumen is a thick, black, sticky substance derived from crude oil refining, widely used as a binding material in road construction. When mixed with aggregates like stone chips and sand, it forms asphalt, which is laid and compacted to create a smooth, durable road surface. Bitumen is preferred because it is waterproof, flexible enough to handle temperature changes and traffic loads without cracking easily, and relatively economical compared to other paving materials. It also allows for faster construction and easier maintenance through patching or resurfacing. These properties make bitumen the most common choice for highways and city roads worldwide. #pahadieducation7 #nepaliconstitution #foryou #civilengineering #nepaliconstruction](/video/cover/7664650575195327764.webp)
