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齒科用 Cement의 張力에 關한 實驗的 硏究
| Content Provider | Semantic Scholar |
|---|---|
| Author | 張完植 徐奎源 |
| Copyright Year | 1973 |
| Abstract | Domestic Production and Use: In 2007, about 91 million tons of portland cement and about 4 million tons of masonry cement were produced at 113 plants in 37 States; total cement production capacity was about 127 million tons. Cement also was produced at two plants in Puerto Rico. Sales prices were similar or slightly higher than those in 2006 and implied a value of cement production, excluding that of Puerto Rico, of about $9.7 billion. The value of total sales, including imported cement, was about $11.8 billion. Most of the cement was used to make concrete, worth at least $60 billion. About 75% of cement sales went to ready-mixed concrete producers, 13% to concrete product manufacturers, 6% to contractors (mainly road paving), 3% to building materials dealers, and 3% to other users. Lower overall sales volumes, as in the second half of 2006, reflected declines in the housing market. The bulk of the decline in demand in 2007 was at the expense of import volumes, which dropped sharply. California, Texas, Pennsylvania, Florida, Alabama, and Michigan, in descending order, were the six leading cement-producing States and accounted for about 48% of U.S. production. |
| Starting Page | 41 |
| Ending Page | 44 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Volume Number | 11 |
| Alternate Webpage(s) | http://computing.ornl.gov/internships/rams/archive/rams04/posters04/l_johnson_poster.pdf |
| Alternate Webpage(s) | https://minerals.usgs.gov/minerals/pubs/commodity/cement/mcs-2013-cemen.pdf |
| Alternate Webpage(s) | https://minerals.usgs.gov/minerals/pubs/commodity/cement/mcs-2014-cemen.pdf |
| Alternate Webpage(s) | https://minerals.usgs.gov/minerals/pubs/commodity/cement/mcs-2011-cemen.pdf |
| Alternate Webpage(s) | http://www.iea.org/Textbase/nptoc/industry2009toc.pdf |
| Alternate Webpage(s) | http://scetcivil.weebly.com/uploads/5/3/9/5/5395830/manufacturing_of_portland_cement.pdf |
| Alternate Webpage(s) | https://minerals.usgs.gov/minerals/pubs/commodity/cement/mcs-2008-cemen.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
