Portland Cement
Portland cement is a ____ _____ _____ made from varying amounts of raw materials primarily obtained from quarries?
finely ground powder
A general-purpose cement suitable for all uses where it is not subject to attack by sulfates or to an undesired temperature rise due to hydration.
Type I
Portland slag cement
Type IS
Solid, chemically inert materials, from sand to large rocks makes up ___ __ ____ percent of the concrete volume.
60% to 80%
The heat generated when portland cement is mixed with water, the result of the exothermic chemical reaction between cement and water. The hydrating process raises the temperature of concrete.
Heat of hydration
A standard bag weighs __ pounds ?
94
sulfate-resistant cement generally used only in concrete exposed to severe sulfate action.
Type V
ternary blend cement
Type IT
_____ serves to bind the aggregate together in concrete, with the resulting strength depending significantly on the strength of the aggregate and the aggregate-cement bond.
Cement
Concrete that, after a typical 28-day curing period, exhibits a compressive strength of 8,000 psi or higher.
High-strength concrete
_____ _____set and harden by reacting with water and can even harden when submerged?
Hydraulic cements
A high early-strength cement used when forms must be removed quickly; finer grinding and different content proportions helps reach a strength about equal to the 28-day strength of Types I and II within only seven days.
Type III
Portland-limestone cement
Type IL
____ ____ _____cannot be made from aggregate that is structurally weak, such as soft sandstone, shale, or coal.
High-strength concrete
Cementitious materials, such as portland cement, that set, become adhesive due to a chemical reaction between the dry ingredients and water, and then harden.
Hydraulic cements
Materials can be selected to reduce or increase the heat of _____.
hydration
A cement with moderate sulfite resistance and usually with a low heat of hydration; used in concrete for piers, large structures, and structures exposed to seawater.
Type II
·portland-pozzolan cement
Type IP
Coarse, crushed aggregate with elongated or thin pieces are limited to a maximum of ___ __ ___ by weight.
10% to 15%
Newly mixed concrete that is in a semiliquid state and can still be manipulated.
Plastic concrete
Cement properties and performance differ depending on ___ ______ and their proportions.
raw materials
Cement that develops a low volume of heat from hydration; used in massive structures where low heat buildup from hydration is required.
Type IV
_____ ______C595 provides the proper identification of blends by displaying the percentage of the blended ingredient
ASTM Standard
Non-potable water may be used if it meets the requirements of _____ ______, Standard Specification for Mixing Water Used in the Production of Hydraulic-Cement Concrete.
ASTM C1602
In portland cement manufacturing, the source of calcium is finely ground______.
limestone