An investigation into the influence of inter-aggregate spacing and the extent of the ITZ on properties of Portland cement concretes

• Published in: Cement and concrete research Vol. 40; no. 11; pp. 1601 - 1608
• Main Authors: Rangaraju, Prasada Rao, Olek, Jan, Diamond, Sidney
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2010; Elsevier
• Subjects: Applied sciences; Buildings. Public works; Cements; Chlorides; Compressive strength (C); Concretes; Concretes. Mortars. Grouts; Elastic moduli (C); Exact sciences and technology; General (composition, classification, performance, standards, patents, etc.); Grains; Interfacial transition zone (B); Materials; Mean inter-aggregate spacing; Particle size distribution; Pastes; Permeability; Sand; Transport properties (C); Elastic moduli (C); Interfacial transition zone (B); Mean inter-aggregate spacing; Transport properties (C); Compressive strength (C); Scanning electron microscopy; Elastic modulus; Transport properties; Construction materials; Concrete mix design; Mechanical properties; Cement concrete; Spacing; Compressive strength; Experimental study; Transition zone; Portland cement; Interfacial area; Comparative study

Conventionally-designed concretes were prepared with different sand particle size distributions, so as to systematically vary the extent of aggregate-cement paste interface and the mean spacing between sand grains. The range of fineness modulus of the sands fully encompassed the range of sands norma...