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Properties Of Materials For Underwater Concreting

Concrete mix design for underwater concreting requires the selection of suitable materials and proportioning to produce concrete to meet the requirements of a specified application. Which mainly concentrates on the properties of workability/flow, compressive strength, and durability. Characteristic/Target Strength Relationships Detailed physical observation is difficult for concrete placed underwater. Thus, while UWC

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Lasers Write Data Into Glass

Magnetic tape and hard disk drives hold much of the world’s archival data. Compared with other memory and storage technologies, tape and disk drives cost less and are more reliable. They’re also nonvolatile, meaning they don’t require a constant power supply to preserve data. Cultural institutions, financial firms, government agencies,

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