Detail publikace

The development of the early-age elastic modulus in cement-materials with different water coefficient

HALAMOVÁ, R. KOCÁB, D. KUCHARCZYKOVÁ, B. DANĚK, P.

Originální název

The development of the early-age elastic modulus in cement-materials with different water coefficient

Typ

článek ve sborníku mimo WoS a Scopus

Jazyk

angličtina

Originální abstrakt

The effect of the composition of cementitious materials on the resulting value of the modulus of elasticity is a matter of common knowledge. However, the issue of what factors affect it during early age is still not well understood. The paper deals with the development of the modulus of elasticity in cement composites at an early age. The measurements were performed on cement pastes with varying water-cement ratio. The influence of plasticizer content was also investigated. Prism-shaped specimens with the dimensions of 40×40×160 mm and Vicat ring-shaped specimens were manufactured for the purposes of the experiment. The modulus of elasticity was determined based on a continuous measurement of the ultrasonic transit time during the first 24 hours of ageing. The measurement was started immediately after filling the measurement cell with the fresh material and took 24 hours. The internal temperature of the specimens was measured simultaneously, which provided information about the hydration process of the material. All the prismatic test specimens were removed from moulds at an age of 24 hours and tested for the dynamic modulus of elasticity by the ultrasonic pulse velocity test at the age of 24, 48 and 72 hours. The measurement of the dynamic modulus of elasticity was supplemented with a static test performed on the prismatic test specimens at the age of 24 and 72 hours.

Klíčová slova

Modulus of elasticity, cement-materials, early age, water coefficient

Autoři

HALAMOVÁ, R.; KOCÁB, D.; KUCHARCZYKOVÁ, B.; DANĚK, P.

Vydáno

23. 10. 2018

Nakladatel

RILEM Publications S.A.R.L.

Místo

Funchal, Madeira, Portugalsko

ISBN

978-2-35158-211-4

Kniha

SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time

Číslo edice

1

Strany od

345

Strany do

350

Strany počet

6

BibTex

@inproceedings{BUT150939,
  author="Romana {Halamová} and Dalibor {Kocáb} and Barbara {Kucharczyková} and Petr {Daněk}",
  title="The development of the early-age elastic modulus in cement-materials with different water coefficient",
  booktitle="SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time",
  year="2018",
  number="1",
  pages="345--350",
  publisher="RILEM Publications S.A.R.L.",
  address="Funchal, Madeira, Portugalsko",
  isbn="978-2-35158-211-4"
}