This requirement for reinforcement is excerpted from the specification for concrete work.
Materials
Reinforcement bars shall conform to the requirements from the following specifications: Read the rest of this entry »
There are significant developments in concrete technology for a number of different and unique applications. Shrinkage compensating concrete is a concrete made with an expansive cement which, when properly restrained by reinforcement or other means, will expand by an amount equal to or slightly greater than the anticipated drying shrinkage. Read the rest of this entry »
Regarding material viewpoint, concrete itself could be described as a mixture of sand, cement, aggregate, water, admixture and air. Practically speaking, concrete consists a lot of inter-depend task. The basic way to achieve this target is to produce concrete with low water cement ration (W/C). Read the rest of this entry »
In the past few years the pre-cast industry has grown tremendously with the new and challenging requirements from most of the construction industry. The precast concrete elements with defects need to be repaired properly.
Defects not impairing the functional use or expected life of a Pre-cast concrete product shall be considered minor defects.
Minor defects may be repaired by any method that does not impair the product.
When honeycombed areas are to be repaired, all loose material shall be removed and the areas cut back into essentially horizontal or vertical planes to a depth at which coarse aggregate particles break under chipping rather than merely being dislodged.
Defects in Pre-cast concrete products that impair the functional use or the expected life of products shall be considered major defects
Repairs should be made as soon as feasible after the defect is noted so that differential shrinkage between the original concrete and the repair concrete is minimized. Repair materials used in repairs of major defects should be essentially the same as the original concrete.
The repair material should become an integral part of the product with no delaminations or cracks.
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PRODUCT NAME
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DESCRIPTION
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Sikagard 75 Epocem
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Superfine epoxy cement sealing mortar, a three component modified cementitious mortar
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Sika Refit 2000
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A one component polymer modified cementitious based mortar containing silica fume used for cosmetic surface repair & fair coating
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Sika Monotop 615 HB
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A one component thixotropic, high build, polymer modified mortar containing silica fume, used as repair mortar
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Sika Monotop 610
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A one component cementitious, polymer modified mortar containing silica fume and corrosion inhibitors, used as bonding slurry and reinforcement corrosion protection
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Sika Monotop R
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A one component thixotropic, polymer modified fiber reinforced cementitious mortar used as repair mortar
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Sikadur 732
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2-component bonding agent, based on selected epoxy resins, for bonding of new to old concrete
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Sikadur 731
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Thixotropic 2-component adhesive and repair mortar based on combination of epoxy resins and specially selected high strength fillers for concrete repairs
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Sikagrout 212/214-11
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Non-shrink, self levelling, pre-mixed cementitious grouting mortar
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