建筑材料外文翻译及译文

建筑材料外文翻译及译文内容摘要：

kg/cm2) of high strength steel. These steel on the structure of key parts, such as skyscrapers pillars. Aluminum. When light weight, high strength and corrosion resistance has bee an important factor, aluminum became a particularly useful building materials. Because pure aluminum is extremely soft and ductility of, so, the position of the alloy, such as mn, silicon, zinc and copper must add increase structure required strength. Structural use of aluminium alloy performance of flexibility. Their elastic modulus is steel 1/3, therefore in the same loads deformation is 3 times of steel. Each unit of aluminum alloy is weight steel 1/3. Therefore the same intensities, aluminum alloy ponent than steel ponents in weight. Aluminum alloy limit tensile strength variation in 20,000 to 60,000 pounds per square inch (14 to 4,200 kg/cm2) between. Aluminum can fashioned many shapes, it can be extrusion forming strander liang, pull string and stem, rolled into foil and plate. Aluminum ponent can like steel use the same method, riveting, bolt connection, low strength welded together. Besides being used for architectural framework and prefabrecated house, aluminum also widely used as an window frame and structure curtain box. Concrete. Concrete is water, sand, stone and ordinary Portland cement mixture. Gravel, artificial light stone, and shells were used in natural ShiLiaoChang. Ordinary silicate cement is contains calcium and clay mixtures. In the heating furnace, and then to a fine powder. Concrete strength es from mixing water farinaceous ordinary Portland cement, then atherosclerosis. In an ideal mixture, concrete by 3/4 volume of sand and stone and 1/4 volume of water mud. The physical characteristics of concrete mixture position is sensitive to changes, therefore according to strength or contraction design position ratio to achieve special results. When concrete dump in template, it contains free water, and no need water action of water will evaporate. With concrete sclerosis, it in a certain period of releasing excess water and shrinking. As a result of shrinkage, the fine cracks. In order to minimize the shrinkage crack, concrete sclerosis must protect wet at least five days. Concrete strength increased over time, because the hydration processes will last for years, In fact, 28 days intensity is considered the standard. Concrete under load is elastic deformation. Although its elastic modulus is steel onetenth, but distortion is same, because。