Ball, JE & Henderson, FM 1986, 'Tidal influence upon flow in rivers.'.
View description>>
Increasing development along coastal regions has resulted in engineers and water resource managers having to become conversant with the interaction between flow, flood or otherwise, in rivers and the tidal cycle in the ocean. The tidal cycle and its interaction with river flows is an example of unsteady flow. Consequently, determination of the interaction between the tidal cycle and the river flows requires solution of the unsteady flow equations. This paper presents results from a solution of the non dimensional unsteady flow equations for alternative tidal and river conditions. Also presented is a summary of the algorithm used for the numerical solution of the non dimensional unsteady flow equations.
Li, J, Maohua, W & Qingzhi, H 1986, 'Study in Mixed Mode Fatigue Crack Propagation in a Stiffened Sheet', Acta Aeronautica et Astronautica Sinica, vol. 7.
Roper, H, Baweja, D & Kirkby, GA 1970, 'PRODUCTION AND CHARACTERIZATION OF FLY ASH FROM NEW SOUTH WALES COALS.', Materials Research Society Symposia Proceedings, pp. 115-124.
View description>>
Factors affecting fly ash characteristics are examined by consideration of the various processes and constituents involved in its production. Coal conversion, boiler-furnace operations and collection procedures are discussed. Current classification schemes applied to fly ash, in particular to those for use as a pozzolanic mineral admixture in concrete are reviewed. The variability of the material is highlighted using physical and chemical data. Shape and size characteristics of selected fly ashes from sources within New South Wales, Australia are illustrated by electron micrographs.
Roper, H, Kirkby, G & Baweja, D 1970, 'Long-term durability of blended cement concretes in structures', American Concrete Institute, ACI Special Publication, pp. 463-482.
View description>>
Although abundant data are available on early-age properties of blended cement concretes, relatively little Information has been published on the long-term durability of blended cement concretes In service. The paper Is a summary of an Investigation of over two hundred structures In Australia. Some of these have service lives In excess of twenty years. Cored materials from some of the structures are described, and petrological and mineralogical examination allow conclusions on the efficacy hydration processes under field curing to be made. Porosity and permeability is discussed. Carbonation and corrosion effects on long-term durability are considered by the examination of data obtained from in situ concretes. The interactions between cement content and water: cement ratio on carbonation rate is discussed, and data from concretes both from in service and laboratory mixes are considered. Cracking is the predominant defect observed on most of the examined concrete surfaces and the role of pozzolans on elastic deformations, creep and shrinkage of concrete in structures is discussed. Data suggest that, for those structures studied, the long-term durability of blended cement concretes is at least the equal of ordinary portland cement concretes under service conditions.
Roper, H, Kirkby, G & Baweja, D 1970, 'LONG-TERM DURABILITY OF BLENDED CEMENT CONCRETES IN STRUCTURES.', Publication SP - American Concrete Institute, pp. 463-482.
View description>>
Relatively little information has been published on the long-term durability of blended cement concretes in service. The paper is a summary of an investigation of over two hundred structures in Australia. Some of these have service lives in excess of twenty years. Cored materials from some of the structures are described, and petrological and mineralogical examination allow conclusions on the efficacy hydration processes under field curing to be made. Porosity and permeability is discussed. Carbonation and corrosion effects on long-term durability are considered by the examination of data obtained from in situ concretes.
