Location

London

Event Website

http://www.csce2016.ca/

Description

This research investigates the mechanical behaviour for the Ultra-High Performance Concrete (UHPC) and UltraHigh Performance Fiber Reinforced Concrete (UHPFRC). UHPC and UHPFRC are designed to be self-consolidated concrete that level itself without mechanical vibration due to its highly flowability and moderate viscosity. UHPFRC is used as joint-fill cementitious materials for the connections of prefabricated bride elements and systems used for the Accelerated Bridge Construction and rapid bridge replacement. The main concrete constituents of such materials consist from: binders (cement), powders (fillers), liquids (additives), water, and fibers. Hence, the mixture proportion design should follow a densified mixture design algorithm to densify the particle packing that reduces the amount of pores and reduces the water/binder ratio to attain the design criteria. The concrete mix design has two approaches, namely: classical mixture including the response surface methodology and factorial-based central composite design, also known as the mathematically independent variable. Experimental work is conducted to determine the optimum particle size distribution and to identify the chemical effects followed by parametric experimental tests on different concrete constituents to develop series of UHPC/UHPFRC products and monitor there rheological behavior.


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Jun 1st, 12:00 AM Jun 4th, 12:00 AM

MAT-702: MECHANICAL BEHAVIOUR OF ULTRA-HIGH PERFORMANCE CONCRETE OBTAINED WITH DIFFERENT CONCRETE CONSTITUENTS AND MIX DESIGNS

London

This research investigates the mechanical behaviour for the Ultra-High Performance Concrete (UHPC) and UltraHigh Performance Fiber Reinforced Concrete (UHPFRC). UHPC and UHPFRC are designed to be self-consolidated concrete that level itself without mechanical vibration due to its highly flowability and moderate viscosity. UHPFRC is used as joint-fill cementitious materials for the connections of prefabricated bride elements and systems used for the Accelerated Bridge Construction and rapid bridge replacement. The main concrete constituents of such materials consist from: binders (cement), powders (fillers), liquids (additives), water, and fibers. Hence, the mixture proportion design should follow a densified mixture design algorithm to densify the particle packing that reduces the amount of pores and reduces the water/binder ratio to attain the design criteria. The concrete mix design has two approaches, namely: classical mixture including the response surface methodology and factorial-based central composite design, also known as the mathematically independent variable. Experimental work is conducted to determine the optimum particle size distribution and to identify the chemical effects followed by parametric experimental tests on different concrete constituents to develop series of UHPC/UHPFRC products and monitor there rheological behavior.

http://ir.lib.uwo.ca/csce2016/London/Materials/2