scholarly journals Mixture design, Preparation and Properties of Lightweight Ultra-high Performance Concrete (LUHPC)

2019 ◽  
Author(s):  
Jing Wu ◽  
Qingjun Ding ◽  
Yongqiang Liu ◽  
Junshuai Mei ◽  
Gaozhan Zhang
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Mixture Design ◽  
Ultra High Performance Concrete

Mixture design methods for ultra-high-performance concrete - a review

2021 ◽  
Vol 124 ◽  
pp. 104242
Author(s):  
Min Zhou ◽  
Zemei Wu ◽  
Xue Ouyang ◽  
Xiang Hu ◽  
Caijun Shi
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Mixture Design ◽  
Design Methods ◽  
Ultra High Performance Concrete

A review on ultra high performance concrete: Part I. Raw materials and mixture design

2015 ◽  
Vol 101 ◽  
pp. 741-751 ◽  
Author(s):  
Caijun Shi ◽  
Zemei Wu ◽  
Jianfan Xiao ◽  
Dehui Wang ◽  
Zhengyu Huang ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Raw Materials ◽  
Mixture Design ◽  
Ultra High Performance Concrete ◽  
Concrete Part

Proposition of Mixture Design Method for Ultra-High-Performance Concrete

2022 ◽  
Vol 119 (1) ◽  
Author(s):  
Roberto Christ ◽  
Bernardo Fonseca Tutikian ◽  
Paulo Roberto do Lago Helene
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Design Method ◽  
Mixture Design ◽  
Ultra High Performance Concrete

Flexural design of precast, prestressed ultra-high-performance concrete members

PCI Journal ◽  
2020 ◽  
Vol 65 (6) ◽  
pp. 35-61
Author(s):  
Chungwook Sim ◽  
Maher Tadros ◽  
David Gee ◽  
Micheal Asaad
Keyword(s):  
Prestressed Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
Limit State ◽  
Design Guidelines ◽  
Design Tool ◽  
Supplementary Cementitious Materials ◽  
Ultra High Performance Concrete ◽  
Concrete Members ◽  
Cylinder Strength

Ultra-high-performance concrete (UHPC) is a special concrete mixture with outstanding mechanical and durability characteristics. It is a mixture of portland cement, supplementary cementitious materials, sand, and high-strength, high-aspect-ratio microfibers. In this paper, the authors propose flexural design guidelines for precast, prestressed concrete members made with concrete mixtures developed by precasters to meet minimum specific characteristics qualifying it to be called PCI-UHPC. Minimum specified cylinder strength is 10 ksi (69 MPa) at prestress release and 18 ksi (124 MPa) at the time the member is placed in service, typically 28 days. Minimum flexural cracking and tensile strengths of 1.5 and 2 ksi (10 and 14 MPa), respectively, according to ASTM C1609 testing specifications are required. In addition, strain-hardening and ductility requirements are specified. Tensile properties are shown to be more important for structural optimization than cylinder strength. Both building and bridge products are considered because the paper is focused on capacity rather than demand. Both service limit state and strength limit state are covered. When the contribution of fibers to capacity should be included and when they may be ignored is shown. It is further shown that the traditional equivalent rectangular stress block in compression can still be used to produce satisfactory results in prestressed concrete members. A spreadsheet workbook is offered online as a design tool. It is valid for multilayers of concrete of different strengths, rows of reinforcing bars of different grades, and prestressing strands. It produces moment-curvature diagrams and flexural capacity at ultimate strain. A fully worked-out example of a 250 ft (76.2 m) span decked I-beam of optimized shape is given.

Sign in / Sign up

Export Citation Format

Share Document