(Units) the ratio of the density of a substance to the density of a standard substance under specified conditions. For liquids and solids the standard is usually water at 4°C or some other specified temperature. For gases the standard is often air or hydrogen at the same temperature and pr...
Purpose: To verify transmission factors of the high density concrete (HDC) used in modification of an existing radiation shielding for a new linear accelerator and to measure transmission factors of other types of HDC under user beams before shielding construction started. Method and Materials:Six ...
A Method for Predicting L'nT,w for Lightweight Floating Floors Comprising Low Density Flexible Polyurethane Foam on Concrete Supporting Floors Lightweight floating floors of medium density fibreboard supported by a resilient layer of flexible polyurethane foam are increasingly being used in both new bu...
Geofill Cellular Concrete products are lightweight materials specifically designed to provide engineers and contractors with a range of low density solutions for any number of geotechnical and construction project applications
Harmathy et al., “Comparison of Severity of Exposure in ASTM E 119 and ISO 834 Fire Resistance Tests,” Journal of Testing and Evaluation, 15(6): 371-375 (1987) 7 pages. K.F.Mikhaylov—Manual for manufacturing prefabricated reinforced concrete articles, Moscow, Stroyizdat, 1982, pp....
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tall for compression measurements without the glazed surface. As indicated in the characteristics portion of Table 3, the compression strength of Examples 7-9 were over 10,000 lb./sq. in., a factor of over 2½ times the compression strength of concrete (4,000 lb./sq. in.). Similarly,...
Concrete densities tested range from 2.35 g cc(-1) (147 pcf) to 5.6 g cc(-1) (350 pcf). Measurements were taken using 6MV, 6FFF, and 10FFF on a Varian Truebeam linear accelerator. Field sizes of 4x4, 9x9 and 30x30 cm(2) were measured. A PTW 31013 Farmer chamber with a build...
The present invention relates to a composite concrete building material comprising cementatious materials; and foam glass aggregates. The cementatious materials may comprise cement, sand and fly ash. The cementatious materials may also comprise other materials, including, for example, reinforcing ...
Among other construction materials, Autoclaved Aerated Concrete (AAC) offers several advantages to face the pressing need to build more sustainable and energy-efficient buildings. From the building side, the low thermal conductivity of AAC allows the realization of energy-efficient building envelopes, wi...