Manufacturing ultra-high performance concrete utilising conventional materials and production methods

Sobuz, Md. Habibur Rahman; Visintin, Phillip; Ali, M.S. Mohamed; Singh, Manpreet; Griffith, Michael

doi:10.1016/j.conbuildmat.2016.02.102

Cited by 115 publications

(31 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Tayeh et al (2012) Tayeh et al (2013) Uma composição típica de UHPFRC necessita de uma elevada energia de mistura, fazendo com que equipamentos não convencionais em nossos canteiros de obras sejam utilizados como, por exemplo, um misturador ciclópico. Por este motivo, Sobuz et al (2016) desenvolveram um concreto de ultra-alto desempenho capaz de ser misturado em qualquer canteiro de obras sem a necessidade de equipamentos especiais. Os autores conseguiram fabricar um UHPC fluido com betoneira comum utilizando o traço 1:1:0,266:0,233 (cimento, areia, sílica ativa e fibras metálicas).…”

Section: Concreto De Ultra-alto Desempenhounclassified

“…Como a proposta do presente trabalho é desenvolver um sistema de reforço aplicável sem maiores problemas em canteiros de obras convencionais, a proporção entre cimento, sílica ativa, areia e fibras metálicas proposta por Sobuz et al (2016) Mahmud et al (2013).…”

Section: Concreto De Ultra-alto Desempenhounclassified

“…Sobuz et al (2016). A relação água/cimento utilizada foi de 0,2 e a quantidade de superplastificante foi a máxima recomendada pelo fabricante, ou seja, 9% da massa de cimento.…”

Section: Propriedades Dos Materiaisunclassified

“…Verificou-se que o traço proposto por Sobuz et al (2016) para os concretos de ultra-alto desempenho, com a utilização de 9% de superplastificante, resultou em um concreto fluido que proporcionou a concretagem das camisas sem problemas, mesmo em espessuras menores que 1,5 cm.…”

Section: Conclusãounclassified

See 3 more Smart Citations

Reforço de pilares curtos de concreto armado por encamisamento com concreto de ultra-alto desempenho

Enami¹

View full text Add to dashboard Cite

Section: Concreto De Ultra-alto Desempenhounclassified

“…Sobuz et al (2016). A relação água/cimento utilizada foi de 0,2 e a quantidade de superplastificante foi a máxima recomendada pelo fabricante, ou seja, 9% da massa de cimento.…”

Section: Propriedades Dos Materiaisunclassified

Section: Conclusãounclassified

See 2 more Smart Citations

Reforço de pilares curtos de concreto armado por encamisamento com concreto de ultra-alto desempenho

Enami¹

View full text Add to dashboard Cite

“…A UHPFRC developed at the University of Adelaide by Sobuz et al, which can be manufactured using materials and equipment utilized in the manufacture of normal strength concrete has been investigated. The basic mix design is provided in Table where it can be seen that six variations in fiber type were considered.…”

Section: Experimental Programmentioning

confidence: 99%

Local bond slip behavior of steel reinforcing bars embedded in ultra high performance fibre reinforced concrete

Sturm

Visintin

2018

Structural Concrete

Self Cite

View full text Add to dashboard Cite

The local bond stress slip behavior is a fundamental property required for the analysis and design of concrete structures at both serviceability and at ultimate limit. The addition of fibers has been shown to significantly improve the bond between normal strength concrete and steel reinforcement but little work has investigated the bond between reinforcing and ultra high performance fibre reinforced concrete (UHPFRC). In this paper a series of 69 pull tests are carried out on UHPFRC with either short straight or long hooked steel fibers including mixes where the two fiber types have been blended. The results of this study were combined with the results from existing literature to regress a material model for the bond slip behavior between UHPFRC and ribbed steel reinforcing bars. Importantly, it is shown that models for normal strength fiber reinforced concrete cannot be extrapolated to UHPFRC.

show abstract

Effect of temperature on mechanical properties of ultra‐high performance concrete

Banerji

Kodur

2021

Fire and Materials

View full text Add to dashboard Cite

High temperature mechanical property data are needed for evaluating fire resistance of structural members. Being a relatively new construction material, there is a lack of temperature-dependent mechanical property data on ultra-high performance concrete (UHPC). To address this knowledge gap, this paper presents results from an experimental study on the effect of temperature on mechanical properties of UHPC.Specimens made of two UHPC mixes: one with only steel fibers (UHPC-S) and the other with hybrid fibers, that is, both steel and polypropylene (UHPC-H), were tested under different heating conditions in 20 to 750 C temperature range. Compressive strength, tensile strength, stress-strain response, and elastic modulus of UHPC were evaluated at various temperatures. Results generated from these property tests on UHPC were compared with property relations specified in design codes for conventional normal strength concrete (NSC) and high strength concrete (HSC). The comparisons show that UHPC experiences faster degradation in compressive strength and elastic modulus as compared to conventional concrete. However, UHPC exhibits slower degradation in tensile strength and ductility at elevated temperatures due to the presence of steel fibers. Data generated from these property tests were utilized to propose relations for expressing the mechanical properties of UHPC as a function of temperature and these relations can be used as input to numerical models for evaluating fire resistance of structures made of UHPC.

show abstract

Manufacturing ultra-high performance concrete utilising conventional materials and production methods

Cited by 115 publications

References 17 publications

Reforço de pilares curtos de concreto armado por encamisamento com concreto de ultra-alto desempenho

Reforço de pilares curtos de concreto armado por encamisamento com concreto de ultra-alto desempenho

Local bond slip behavior of steel reinforcing bars embedded in ultra high performance fibre reinforced concrete

Effect of temperature on mechanical properties of ultra‐high performance concrete

Contact Info

Product

Resources

About