The direct summarizes the show state of innovation. It presents and interprets the information on lightweight total concretes from numerous laboratory studies, amassed encounter coming about from effective utilize, and the performance of auxiliary lightweight total concrete in service. ACI 213R-87 ACI Standards Guide for Structural Lightweight Aggregate Concrete. The direct is expecting for all segments of ACI readership. It incorporates a definition of lightweight total concrete for auxiliary purposes and it discusses in condensed design the generation strategies for and inherent properties of auxiliary lightweight totals. Other chapters take after on current hones for proportioning, miring, transporting, and placing; properties of solidified concretes; and the plan of basic concrete with uncommon reference to ACI 318.
ACI 213R-87 ACI Standards Guide for Structural Lightweight Aggregate Concrete
213R_87 - Guide for Structural Lightweight Aggregate ConcretFine lightweight aggregates
These estimate fractions of totals are composed fundamentally of prepared or naturally occurring cellular materials of mineral root which (a) are suited to the generation of auxiliary lightweight concrete as characterized in Segments 1.5 and 2.2.3; (b) are properly graded with 85 to 100 percent passing the No. 4 sifter in. (5 mm)]; (c) have a dry, free weight not surpassing 70 lb/ft 3 (1120 kg/m 3 ); and (d) comply with all other requirements of ASTM C 330. ACI 213R-87 ACI Standards Guide for Structural Lightweight Aggregate Concrete.
Coarse lightweight aggregates
Coarse lightweight aggregates-The bigger size fractions of lightweight totals are composed primarily of handled or actually happening cellular materials of mineral beginning which (a) are suited to the generation of structural lightweight concrete as characterized in Segments 1.5 and 2.2.3; (b) are appropriately evaluated from 100 percent passing a assigned most extreme measure sifter; (c) have a dry, loose weight not surpassing 55 lb/ft 3 (880 kg/m 3 ); and (d) comply with all other necessities of ASTM C 330. One or more of the taking after degrees are by and large available: l Auxiliary coarse, ¾ in. to No. 4 (19 mm to 5 mm) or ½ in. to No. 4 (13 mm to 5 mm) l Medium coarse, /8 in. to No. 8 (10 mm to 2.5 mm).
Basic lightweight total concrete
As previously characterized (Segment 1.5), such concrete: (a) has a minimum compressive quality at 28 days of 2500 psi (17.24 MPa); (b) features a comparing air-dry unit weight not exceeding 115 lb/ft 3 (1850 kg/m 3 ); and (c) comprises of all lightweight totals or a combination of lightweight and normal weight totals. ACI 213R-87 ACI Standards Guide for Structural Lightweight Aggregate Concrete.