CIV ENG 165 Study Guide - 21 Questions, Portland Cement, Fly Ash

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Major components/ main hydration reactions/ solids in hcp, water inside the pores. Effects on fresh and/or hardened concrete/ advantages. Calcium silicates: c3s = 3(cao). sio2, c2s = 2(cao). sio2. Main hydration reactions: ($ = so3) (pg. Dimensional range of solid & pores in hydrated cement paste: A portland cement has the following composition: 60% c3s, 15% In what type of construction should you not use this type of cement? (pg 228) Remember main hydration reactions: ($ = so3) (pg. 2c3s + 6h c-s-h + 3ch + 120 cal/g. 2c2s + 4h c-s-h + ch + 62 cal/g. 2c s + 4h c-s-h + ch + 62 cal/g. Q1 cement will generate high heat of hydration due to its high. C3s and c3a content, and low c2s content. The cement will also produce more ch and ettringite/monosulfate and less ch. During concrete"s early ages, strength development is dominated by ch and ettringite formation.