Thus, in deciding between lightweight and normal weight concrete, careful consideration should be given to their price and their physical characteristics. Composition The primary difference between siliceous and carbonate concrete is the type of material of which each consists. Classification of concrete by density Types of concrete Density (Kg/[m.sup.3]) Lightweight concrete 800-2000 Normal-weight concrete 2001-2600 Heavy-weight concrete >2600 (EN 206: 2000) Table 3. The same segment created from lightweight concrete weighs approximately 14.5 pounds. WagnerMeters 30,538 views. Reply. Concrete is used as construction material and it is categorized as normal concrete or high strength concrete based on its compressive strength. Introduction of LWC brings advantages in terms of energy efficiency and reduction of costs. Structural lightweight concrete provides a more efficient strength-to-weight ratio in structural elements. Replies. Normal Weight Concrete – 145 pounds per cubic foot. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete … MJLonigro | Jan 24, 2006 08:24pm | #1. Therefore, the abrasion resistance of all lightweight concrete may not be suitable for steel-wheeled or exceptionally heavy industrial traffic in commercial establishments. After having been loaded repeatedly beyond the “point of failure”, the material showed no visible cracks. With a standard thickness of 1.5 inches, normal weight concrete weighs about 18 lbs per square foot while lightweight concrete weighs 14.5 lbs per square foot. The lightweight concrete doesn’t present special problems with respect to freezing and thawing. It can be used virtually anywhere normal weight concrete is used, including concrete blocks, precast components, floors, walls, and exterior finishing. The mechanical properties of the interfacial transition zone (ITZ) between LWC and NWC has a crucial effect on the durability of structures. Structural lightweight concrete has an in-place density (unit weight) on the order of 90 to 115 lb / ft³ (1440 to 1840 kg/m³). The strength of high strength concrete is above 40 MPa. PRODUCTION OF LIGHTWEIGHT CONCRETE FROM WASTE TIRE RUBBER CRUMB Based on the bulk specific gravity of the aggregates, the classification is made as Light Weight Aggregates Normal Weight Aggregates Heavy Weight Aggregates These aggregates have a major role in the manufacture of concrete with varied properties. The reduction in weight of concrete helps easy removal, transport and erection of precast products. The performance of both lightweight concrete made with lightweight aggregate in pre-soaked concrete and normal weight concrete are similar and do not show significant differences. Those advantages include not only weight considerations, but also insulation value, sound reduction, and workability. Lightweight concrete does compare favorably with prices for grout, mortar, and flowable fill. The field application of these aggregates will hence vary based on the properties of the aggregates showed in the concrete made. The extraordinary stress-strain behavior displayed in the graph is unlike that of any other known plain concrete material. I apologize if this topic has been hashed out before (I searched on gypcrete & concrete & didn’t turn up anything). Traditional concrete, 2006 08:24pm | # 1 above 40 MPa successfully used for roof decks for well over century. 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