Early-strength development of Portland cement mortars containing air classified fly ashes

Journal Article · Tue Jan 31 23:00:00 EST 1995 · Cement and Concrete Research; (United States)

DOI:https://doi.org/10.1016/0008-8846(95)00031-3· OSTI ID:6508725

Paya, J; Monzo, J; Peris-Mora, E; Borrachero, M V; Tercero, R; Pinillos, C ^[1]

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1. Univ. Politecnica de Valencia (Spain)

A study of the effect of different fly ash sized fractions on compressive and flexural strength of blended cement mortar is presented. Mortars containing fly ashes, replacing 15 to 60% of Portland cement, were prepared, and compressive and flexural strengths compared with only cement mortar. The influence of curing temperature was also studied. The study reveals that: (a) compressive and flexural strength for mortars containing fly ash (or their sized fractions) are significantly enhanced when curing temperature is raised; (b) the content of fly ash finest particles (less than 10 [mu]m) is a crucial parameter for yielding a compressive strength enhancement; (c) good correlations between strengths and particle mean diameters were observed when fly ash percentage of substitution was 60%.

• OSTI ID: 6508725
• Journal Information: Cement and Concrete Research; (United States), Journal Name: Cement and Concrete Research; (United States) Vol. 25:2; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
AEROSOL WASTES
ASHES
CARBONACEOUS MATERIALS
COAL
COMBUSTION PRODUCTS
COMPRESSION STRENGTH
CONCENTRATION RATIO
ENERGY SOURCES
FLEXURAL STRENGTH
FLY ASH
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
MATERIALS
MECHANICAL PROPERTIES
MORTARS
PARTICLE SIZE
POWER PLANTS
RESIDUES
SIZE
TEMPERATURE DEPENDENCE
THERMAL POWER PLANTS
WASTE PRODUCT UTILIZATION
WASTES