ACI SP-131:1992 PDF Download

ACI SP-131:1992 is a publication that documents the proceedings of the G.M. Idorn International Symposium on Durability of Concrete, which was sponsored by the ACI Committee 201 on Durability. The symposium was held in 1990 at the annual ACI Convention in Toronto, Ontario, Canada. The publication consists of 32 papers organized into four parts, all of which focus on the durability of concrete cover.

Part 1 of the publication discusses the effects of the environment on concrete placement and its impact on durability. Topics covered include the protection of steel reinforcement in concrete structures, the use of indices of aggressiveness to assess the corrosion of concrete in aqueous environments, and the influence of curing conditions on the durability properties of near-surface concrete.

Part 2 explores the effects of composition on the durability of reinforced concrete. It includes discussions on the relationship between concrete microstructure, pore structure, permeability, and general durability, as well as topics such as alkali silica reaction processes, the use of calcium chloride in cement concrete, and the influence of blast furnace slag on concrete hydration and durability.

Part 3 focuses on the assessment of durability in reinforced concrete. It covers topics such as quantifying microscopical examinations of concrete for alkali aggregate reactions and other durability aspects, early age permeability measurements for predicting concrete durability, and in-situ assessment of concrete motorway bridges.

Finally, Part 4 presents various case histories related to the durability of reinforced concrete. These case studies include the rehabilitation and impregnation of a concrete arch bridge to inhibit the effects of alkali-aggregate reaction, the durability of concrete in Iceland, the deterioration of precast concrete panels due to alkali silica reaction, and the use of crushed quartz coarse aggregate in old concrete roads in Denmark.