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In table 1 given below, the description of Joint sealant for joints in water preserving structures and water resistant structures is provided.Cold-applied bitumen rubber sealant will be similar as proprietary type.Hot-applied bitumen rubber sealant shall compliant with BS 2499, type N1.Polyurethane-based sealant refers to a cold-applied two-part sealant that adheres to the performance requirements of BS 4254.Polysulphide-based sealant meant for expansion joints in water preserving structures and water-resistant structures must contain a minimum 20% transverse butt-joint movement. Polysulphide-based sealant refers to a cold-applied two-part sealant that adheres to BS 4254. A pouring grade for horizontal joints having span over 15 mm.A gun grade intended for horizontal joints, vertical joints and for disposed joints and having length 15 mm wide or less.Joint sealant except cold-applied bitumen rubber sealant will contain the following:.
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Joint sealant will remain grey for exposed joints. Joint sealant will maintain a grade to cope with the environmental conditions of Hong Kong and work perfectly over a temperature range of 0☌ to 60☌. Joint sealant: Joint sealant provides an effective and durable solution in concrete construction. Bitumen composite for surfaces alongside which drinkable or fresh water will be preserved or transmitted, should adhere to BS 3416, type II. Joint filler for joints should be waterproof in water preserving structures and water repellent structures.īitumen solution: Bitumen composite for joints in water preserving structures and water-repellent structures will adhere to BS 3416.
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Full depth of joint filers is designed to protect the joined ends. Joint filler: Joint filler should be solid, elastic, single-thickness, non-decaying filler. Materials for joints in water preserving structures for drinkable and fresh water will adhere to the obligations of BS 6920.Materials for joints in water preserving structures and water resistant structures for sewage and wastewater treatment will safeguard the construction from ethereal and close microbiological attack as well as gasoline, diesel oil, dilute acids and alkalis like hazardous materials.Materials for joints in water retaining structures and water tight structures: Additionally, there are several types of joints in Concrete Structure, as stated below. To get the optimum result, the exact position should be clearly identified before placing the construction joints in a concrete slab.
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How to get rid of concrete crack by using construction joints Home » Quantity-take-off SheetsĬonstruction joint, expansion joint, contraction joints and isolation joints are the four types of joints generally found in Concrete Construction.