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The phase composition of a particular cement can be quantified through a complex set of calculation known as the Bogue formula. To avoid the flash setting of concrete, due to the very fast hydration of the tricalcium aluminate ( C 3 A ), 2–5 wt. % calcium sulfate is interground with the cement clinker to prepare the cement powder.
An AFm phase is an "alumina, ferric oxide, monosubstituted" phase, or aluminate ferrite monosubstituted, or Al 2 O 3, Fe 2 O 3 mono, in cement chemist notation (CCN). AFm phases are important hydration products in the hydration of Portland cements and hydraulic cements.
On December 2, 2015, Texas Education Agency Commissioner Michael Williams announced that Texas City ISD would absorb the La Marque Independent School District (LMISD) effective July 1, 2016. [5] By February 2016 TCISD began doing job interviews of teachers at LMISD schools, and it was checking to see what renovations are needed at LMISD schools ...
In 2009, the school district was rated "academically acceptable" by the Texas Education Agency.[2]The Texas Education Agency's college readiness performance data shows that only 3.1% (5 out of 152 students) of the graduates of the class of 2010 of the La Marque school district met TEA's average performance criterion on SAT or ACT college admission tests.
For cement, one thing to note is that there is no correlation between the shear and compressive strength. Another fact to note is that cement strength ranges between 1000 and 1800 psi, and for reservoir pressures > 1000 psi; this means that the pipe cement bond will fail first. This would lead to the development of micro-annuli along the pipe.
La Marque High School is a public high school in La Marque, Texas, United States in Greater Houston. The school, which serves grades 9 through 12, is a part of the Texas City Independent School District (TCISD); prior to July 1, 2016, the school district was a part of the La Marque Independent School District (LMISD). [2]
Webb Consolidated Independent School District (WCISD) is a school district based in Bruni, a community in unincorporated Webb County, Texas, United States. [1] WCISD serves the unincorporated communities of Bruni, Aguilares, Mirando City, and Oilton. [2] In 2009, the school district was rated "recognized" by the Texas Education Agency. [3]
Falls City Independent School District is a public school district based in Falls City, Texas . In addition to Falls City, the district also serves the unincorporated community of Hobson as well as rural areas in northwestern Karnes County and a small portion of southeastern Wilson County. The district has two campuses: Falls City High School ...
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