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Pozzolana cement cost less than Portland cement. In May, 2007, BRRI and PMC Global Incorporated of America signed a contract for the commercial production of Pozzolana. [5] The agreement included PMC offering 150,000 dollars to BRRI for expansion of the pilot plant for the production of the pozzolana at the institute and land acquisition for ...
Natural pozzolana (volcanic ash) deposits situated in Southern California in the United States. Pozzolans are a broad class of siliceous and aluminous materials which, in themselves, possess little or no cementitious value but which will, in finely divided form and in the presence of water, react chemically with calcium hydroxide (Ca(OH) 2) at ordinary temperature to form compounds possessing ...
Pozzolana from Mount Vesuvius volcano, Italy. Pozzolana or pozzuolana (/ ˌ p ɒ t s (w) ə ˈ l ɑː n ə / POT-s(w)ə-LAH-nə, Italian: [potts(w)oˈlaːna]), also known as pozzolanic ash (Latin: pulvis puteolanus), is a natural siliceous or siliceous-aluminous material which reacts with calcium hydroxide in the presence of water at room temperature (cf. pozzolanic reaction).
A Form 10-K is an annual report required by the U.S. Securities and Exchange Commission (SEC), that gives a comprehensive summary of a company's financial performance. . Although similarly named, the annual report on Form 10-K is distinct from the often glossy "annual report to shareholders", which a company must send to its shareholders when it holds an annual meeting to elect directors ...
Transitional annual report filed on Form NSAR NSAR-BT/A NSAR-U Annual report for unit investment trusts NSAR-U/A Annual report for unit investment trusts (Amendment) NT 10-K Notice under Rule 12b25 of inability to timely file all or part of a Form 10-K, 10-KSB, or 10KT NT 10-K/A Notice under Rule 12b25 of inability to timely file all or part of ...
The high silica composition of Roman pozzolana cements is very close to that of modern cement to which blast furnace slag, fly ash, or silica fume have been added. The strength and longevity of Roman 'marine' concrete is understood to benefit from a reaction of seawater with a mixture of volcanic ash and quicklime to create a rare crystal ...
In the United States, a more-detailed version of the report, called a Form 10-K, is submitted to the U.S. Securities and Exchange Commission. [2] A publicly held company may also issue a much more limited version of an annual report, which is known as a "wrap report." A wrap report is a Form 10-K with an annual report cover wrapped around it. [3]
A reverse process, sometimes called "relaxation", can be almost immediate (10 −7 to 10 −3 seconds) or take much longer (e.g. 10 6 seconds). [76] Ultimately, any overall retained thermodynamic effect can be justified on the basis that any such reverse process is incapable of reaching an ideal thermodynamic end-state of its own accord.