Question
Download Solution PDFThe % of voids in cement is approximately
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
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The percentage of voids in cement powder is approximately 40%.
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This means about 40% of the volume of cement is empty space between the particles.
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These voids get filled with water during mixing, which is essential for the hydration reaction.
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The actual value may vary slightly depending on the fineness of cement.
Additional Information
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The voids in cement affect the water demand and ultimately the strength and durability of concrete.
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Lower voids mean denser packing of particles and better strength potential.
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Understanding voids helps in optimizing the water-cement ratio for mix design.
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