Astm C 94-05

ASTM C94-05 is a construction standard that specifies requirements for ready-mixed concrete, helping producers and purchasers establish consistent expectations for material quality, production, and delivery. It addresses constituent materials, batching, mixing, transportation, and discharge, with conformity evaluated through sampling and tests such as slump, air content, temperature, and compressive strength when specified. In engineering practice, the standard supports quality control from the concrete plant to the job site and provides a common basis for ordering, inspecting, and accepting concrete used in structural and infrastructure projects. Applying its requirements can improve consistency, document performance, and reduce variability in placed concrete.

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JoVE Journal - Bioengineering

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Cited by 6 •

2020

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JoVE Science Education - Engineering

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2023

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JoVE Journal - Biology

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An accurate hemoglobin estimation method is lacking at the point of care and may hinder population-based programs for treating anemia. Therefore, we developed a point-of-care method based on pooled capillary blood and an auto-analyzer integrated into a custom software application to categorize the hemoglobin values into different grades of anemia.

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2023

Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA One of the more insidious types of failures that can occur in structures are brittle fractures,which are mostly due to either poor quality materials or poor material selection. Brittle fractures tend to occur suddenly and without much material inelasticity; think of a bone fracture, for example. These failures often occur in situations where there is little ability for the material to develop...

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