High-Strength and High- Performance Concrete

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Materials - Cement• Almost any ASTM portland cement type can beused to obtain concrete with adequate rheologyand with compressive strength up to 60 MPa.• In order to obtain higher strength mixtures whilemaintaining good workability, it is necessary tostudy carefully the cement composition andfinenesses and its compatibility with the chemicaladmixtures.• Experience has shown that low-C3A cementsgenerally produce concrete with improvedrheology.
Materials -- Aggregate• In high-strength concrete, the aggregate plays animportant role on the strength of concrete.• The low-water to cement ratio used in highstrengthconcrete causes densification in both thematrix and interfacial transition zone, and theaggregate may become the weak link in thedevelopment of the mechanical strength.• Extreme care is necessary, therefore, in theselection of aggregate to be used in very highstrengthconcrete.
Page 1 and 2: High-Strength and High-Performance
Page 3 and 4: Definitions• ACI defined high-per
Page 5 and 6: Microstructure
Page 7: Microstructure• The utilization o
Page 11 and 12: Guidelines for the selection ofmate
Page 13 and 14: Differences Between NSC andHSC• I
Page 15 and 16: Mechanical Behavior• Stress-strai
Page 17 and 18: Long-term strength• Iravani and M
Page 19 and 20: Elastic Modulus• for normal weigh
Page 21 and 22: Chemical and Autogeneousshrinkage
Page 23 and 24: Definition of the autogenousshrinka
Page 25 and 26: Concerns with the use of HSC (2)•
Page 27 and 28: Concerns with the use of HSC (4)•
Page 29 and 30: Examples of application• Prof. Zi
Page 31 and 32: Petronas Towers
Page 33 and 34: Advantages of using HSC in thePetro
Page 35 and 36: Construction Stage: Jan.
Page 37 and 38: Construction Stage: March

High-Strength and High- Performance Concrete

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