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the thermal model of the filament developed in this chapter assumed that the only heat-loss path was conduction down
1 why is strength the property most valued in concrete by designers and quality control engineers2 in general discuss
1 discuss the physical-chemical characteristics of the c-s-h calcium hydroxide and calcium sulfoaluminates present in a
1 what is the significance of the microstructure of a material how do you define microstructure2 describe some of the
1 what is the significance of elastic limit in structural design2 what is the difference between strength and toughness
1 why is concrete the most widely used engineering material2 compared to steel what are the engineering benefits of
1 can we use recycled water from industrial operations as mixing water in concrete what about the use of seawater for
1 what is a truly elastic material is concrete truly elastic if not why describe the various stages of microcracking
1 what are the assumptions underlying the formulas used by the aci building code and the ceb-fip model code for
1 what is the significance of fineness in cement how is it determined can you give some idea of the fineness range in
what is the alkali-aggregate reaction list some of the rock types that are vulnerable to attack by alkaline solutions
1 what chemical reactions are generally involved in sulfate attack on concrete what are the physical manifestations of
1 with respect to frost damage what do you understand by the term critical aggregate size what factors govern it2
discuss powers hypothesis of expansion on freezing of a saturated cement paste containing no air what modifications
1 under what conditions may salt solutions damage concrete without involving chemical attack on the portland cement
1 how does aggregate size influence the coefficient of permeability of concrete list other factors that determine the
define the coefficient of permeability give typical values of the coefficient fora fresh cement pastesb hardened cement
1 what do you understand by the term durability compared to other considerations how much importance should be given to
1 what is the usefulness of the extensibility concept why would high-strength concrete be more prone to cracking than
1 list the most important factors that affect drying shrinkage and creep and discuss when the effects are similar or
1 what are the typical ranges of drying shrinkage strain and creep strain in concrete what is their significance how
what is the significance of adiabatic temperature in concrete how much adiabatic temperature rise can occur in a
assuming that the workability of concrete is of no consequence would sand be necessary in concrete mixtures what is the
define the terms initial set and final set for a normal portland cement draw a typical heat evolution curve for the
define the terms grading and maximum aggregate size as used in concrete technology what considerations control the