Tianyu Xie

Mechanical and Durability Properties of Recycled Aggregate Concrete: Effect of Recycled Aggregate Properties and Content

AbstractThe use of recycled concrete aggregates as an alternative aggregate material in concrete has been studied over the past two decades. It is now recognized that the recycled aggregate concret...

Microstructure and Mechanical Properties of Ambiently-Cured Blended Coal Ash-Based Geopolymer Concrete

This paper presents the results of an experimental study on the behavior of fly ash-, bottom ash-, and blended fly and bottom ash-based geopolymer concrete (GPC) cured at ambient temperature. Four bathes of GPC were manufactured to investigate the influence of the fly ash-to-bottom ash mass ratio on the microstructure, compressive strength and elastic modulus of GPC. All the results indicate that the mass ratio of fly ash-to-bottom ash significantly affects the microstructure and mechanical properties of GPCs

Effect of Coal Ash Properties on Compressive Strength of Bottom Ash-Based Geopolymer Concrete

This paper presents the results of an experimental study on the behavior of bottom ash-based geopolymer concrete (GPC) cured at ambient temperature. A total of five bathes of bottom ash-based GPC were manufactured. The influence of the particle size and chemical composition of bottom ash on the compressive strength of GPC was investigated. The results indicate that the investigated parameters significantly affect the 28-day compressive strength of bottom ash-based GPCs. It is also found that the strength gain of ambiently-cured coal ash-based GPCs continues beyond the concrete age of 28 days.