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		<title>Tiny Particles, Big Defense: Nanoparticles Shield Concrete From Sulfate Attack</title>
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					<description><![CDATA[A 180-day immersion study shows nano-silica outperforms nano-calcium carbonate in shielding cement mortar from sulfate attack, with optimal dosages of 3–5% and 1% respectively.]]></description>
		
		
		
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