|
| TABLE 15 | |||||
| PORTLAND CEMENT SHIPPED FROM PLANTS IN THE UNITED STATES TO | |||||
| DOMESTIC CUSTOMERS, BY TYPE1, 2 | |||||
| (Thousand metric tons) | |||||
| Type | 2004 | 2005 | |||
| General use and moderate heat (Types I and II) (gray)3 | 90,000 | r | 93,900 | ||
| High early strength (Type III) | 3,820 | 3,960 | |||
| Sulfate resisting (Type V)3 | 15,800 | 18,100 | |||
| Block | 609 | 555 | |||
| Oil well | 1,310 | 1,440 | |||
| White4 | 1,130 | 1,190 | |||
| Blended: | |||||
| Portland, natural pozzolans | 49 | 40 | |||
| Portland, granulated blast furnace slag | 978 | 1,880 | |||
| Portland, fly ash | 343 | 362 | |||
| Other blended cement5 | 486 | 883 | |||
| Total6 | 1,860 | 3,160 | |||
| Expansive and regulated fast setting | 62 | 6 | |||
| Miscellaneous7 | 32 | 2 | |||
| Grand total6, 8 | 115,000 | r | 122,000 | ||
| rRevised. | |||||
| 1Includes imported cement.�� | |||||
| 2Data are rounded to no more than three significant digits; may not add to totals shown. | |||||
| 3Cements classified as Type II/V hybrids are now commonly reported as Type V. | |||||
| 4Mostly Types I and II, but may include Types III-V and block varieties. | |||||
| 5Includes blends with other pozzolans, such as cement kiln dust and silica fume. | |||||
| 6Data may not add to totals shown because of independent rounding. | |||||
| 7Includes low heat (Type IV), waterproof, and other portland cements. | |||||
| 8Data are based on an annual survey of plants and importers; may differ from data on | |||||
| table 9, which are based on monthly consolidated data from companies. | |||||
Source: United States Geological Survey Mineral Resources Program