Structure formation of UHPC with metal fiber exposed to high temperature curing

Soloviev, V.G.; Efishov, Luka; Matyushin, E. G.

doi:10.1088/1757-899x/869/3/032015

Cited by 1 publication

(1 citation statement)

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“…The world accepted producing technology suppose to store products in molds for 24 hours, and then to conduct a steam curing for 48 hours under temperature 80…90 ˚C. In the previous work it was defined that oven chamber heat treatment under temperature 150…250 ˚C allows gaining increase of compression strength of UHPC specimens [16][17][18], including those, which were steam cured before. In the present study it was decided to find the possibility to use this method for accelerating production of UHPC elements.…”

Section: Experiments Programmentioning

confidence: 99%

Combined Heat Treatment Method for Producing of Ultra-High Performance Concrete

Soloviev

Efishov

Matyushin

2022

SSP

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Decreasing an overall time of curing for UHPC products is a perspective task that can be solved by combining different heat treatment technologies. The paper presents the results of studying the UHPC microstructure after combined steam and non-steam heat treatment. Concrete specimens after demolding were steam cured for 16 hours, than – in oven camber. Heat treatment in oven chamber for 8 hours under temperature 250 ̊С leads to micro-defects self-healing, due to the new crystalline phase formation. The combined heat treatment allows unleashing of additional potential of UHPC mixes, which could take years in normal conditions The considered curing method with further treatment in oven can not only accelerate the process, but also unleash the additional part of UHPC pozzolanic potential for different mix compositions.

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Section: Experiments Programmentioning

confidence: 99%