Physics · Concrete Technology
शीघ्र कठोर होने वाले सीमेंट (Rapid Hardening Cement) को 7 दिनों में साधारण पोर्टलैंड सीमेंट (OPC) से अपेक्षित ताकत विकसित करने में कितने दिन लगते हैं?
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