Essays Tagged: "Portland cement"

Arizona Concrete

le limestone and shale rocks. Arizona had two dry-process cement plants in 1969, namely the Arizona Portland Cement Company plant in Pima County, near Tucson, and the American Cement Corporation plant ... e of cementing materials goes back to the ancient Egyptians and Romans, but the invention of modern portland cement is usually attributed to Joseph Aspdin, a builder in Leeds, England, who obtained a ...

(5 pages) 57 0 4.6 Nov/1996

Subjects: Science Essays > Earth Sciences > Geography

Finishing Concrete

ontributes to the whole foundation of good concrete. The ingredients in concrete are water, cement, Portland cement and aggregate or gravel. The concrete is usually mixed at a mixing plant prior to de ... and should be used when ever practicable.Temperature affects the rate of chemical reactions between Portland cement and water. Consequently, temperature affects the rate at which concrete hardens, as ...

(2 pages) 496 0 0.0 Jun/2001

Subjects: Businesss Research Papers

LAST CHANCE

gram. The trade I wanted to take was business & clerical, that trade was full, so I wound up in cement masonry. I received my GED in December of 1999 and completed the cement masonry trade in May ...

(2 pages) 444 0 0.0 Oct/2001

Subjects: Businesss Research Papers

Ragweed

own as the activation energy.Aspdin, Joseph -- (British bricklayer), 827. Patented a product called portland cement that was used in the process for calcining a mixture of limestone and clay. When mix ... ixed with water, it hardened to a materical that resembled a kind of limestone found on the Isle of Portland. This product is now used worldwide.Aston, Francis W. -- (British chemist and physicist) 24 ...

(26 pages) 24 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

Scientenstences

own as the activation energy.Aspdin, Joseph -- (British bricklayer), 827. Patented a product called portland cement that was used in the process for calcining a mixture of limestone and clay. When mix ... ixed with water, it hardened to a materical that resembled a kind of limestone found on the Isle of Portland. This product is now used worldwide.Aston, Francis W. -- (British chemist and physicist) 24 ...

(26 pages) 56 0 5.0 Feb/2008

Subjects: Science Essays > Chemistry

Development of pre-dried and blended lime mortars for the ready-mix market

lling. If the mortar freezes any frozen material or crust should be discarded.Currently Used BindersPortland cement mortar is made by mixing Portland cement, which in this case is the binder, with san ... nd breathability of lime that is required for such functions for proper function. Sulfate-resisting Portland cement may be used to replace ordinary Portland cement in cement:sand, cement:lime:sand and ...

(10 pages) 16 0 4.0 Oct/2008

Subjects: Science Essays > Engineering > Civil Engineering