Properties evaluation of silica-alumina based concrete: Durability and environmental friendly performance. (15th July 2016)

• Record Type: Journal Article
• Authors: Zhang, Na; Li, Hongxu; Peng, Dandan; Liu, Xiaoming
• Is Part Of: Construction & building materials. Volume 115(2016)
• Page Start: 105
• Page End: 113
• Publication Date: 2016-07-15
• Subjects: Silica-alumina based concrete -- Mechanical properties -- Durability -- Interfacial transition zone -- Environmental friendly performance; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2016.04.043
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Silica-alumina based concrete was developed based on simulation of rock formation. Silica-alumina based concrete possessed low shrinkage and excellent durability. Superior performance resulted from the compacted ITZ and refined pore structure. Silica-alumina based concrete is environmentally acceptable. Abstract: An eco-concrete prepared by silica-alumina based cementitious material was developed and defined as silica-alumina based concrete. Systematic properties investigation showed that the silica-alumina based concrete exhibited good mechanical properties, low shrinkage strain and superior durability including strong resistances to water penetration, carbonation, chloride penetration, freezing-thawing and seawater attack. These excellent performances can be related to the fact that it developed a dense and compacted interfacial transition zone between the cementitious matrix and aggregate, and the silica-alumina based cementitious matrix had a refined pore structure. Leaching toxicity and radioactivity results indicated that the silica-alumina based concrete is environmentally acceptable.