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Published byLauren Wiggins Modified over 9 years ago
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–Mineral Admixture –Ordinary Portland Cement (P.O) –Portland granulated Blast-furnance-slag Cement (P.S) –Portland-Pozzlana Cement (P.P) –Portland fly-ash cement (P.F) –Composite Portland Cement (P.C) Chapter 3 Cement § 3.3 Portland Cement With Mineral Materials
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It refers to the Fly ash and a little gypsum Quantities of Fly ash is 20% ~ 40% Clinker Fly ash Gypsum Grinding Hydraulic cementing material cementing material P.F What is Portland fly-ash cement
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Characteristics Strength is low in the early days and high in the later days Strong anti-erosion and poor carbonation resistance Low anti-freezing Low hydration heat Temperature sensitivity Similar points
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Low early-strength –The fly ash form a double cementing action after 1~3 months because the fly ash surface structure is dense. – It is available to the slow construction. Small shrinking, excellent crack resistance, because of dense surface structure and little water absorption. Excellent workability of blended concrete. Characteristics Different points
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