Direct Tensile Constitutive Law of Ultra-High Performance Concrete Without Thermal Curing

Author(s): Li-Ping Geng, Jun-Yuan Guo, Guo-Ping LIn, Juan Yan Wang
Paper category: Proceedings
Book title: 1st International Conference on UHPC Materials and Structures
Editor(s): Caijun Shi and Dehui Wang
ISBN: 978-2-35158-164-3
e-ISBN: 978-2-35158-165-O
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 325-333
Total Pages: 09
Language: English

Abstract: In this study, three types of direct tensile constitutive law of ultra-high performance concrete (UHPC) were investigated according to French Association Civil Engineering˄AFGC˅ Recommendations. They were high strain-hardening UHPC, low strain-hardening UHPC, and strain-softening UHPC, respectively. The axial tensile stress-strain curves of UHPC were
measured by experiment. The constitutive law of low strain-hardening and strain-softening UHPC obey stress-cracking width (σ-f(w)) while high strain-hardening UHPC follows stress- strain (σ-f(ε)) due to the large number of very fine and very dense cracks, once the matrix

strength reached. Three types of simplified constitutive law under ultimate limit states and
serviceability limit states were established for application in construction.

Online publication: 2016
Publication type : full_text
Public price (Euros): 0.00