EXPERMENT TO DETERMINE ABRASION VALUE AND COEFFICIENT OF THERMAL EXPASION OF CONCRETE GRADES g 25, 30, AND 35Mpa: abrasion, coefficient of thermal expansion

SURYA  DEUANHAKSA; PHUXAY  KHAMKHANPOM; Le  Vinh An; Bui Xuan  Cay

doi:10.71026/ls.2024.02002

Authors

SURYA DEUANHAKSA Faculty of Engineering, Savannakhet University- Laos Author
PHUXAY KHAMKHANPOM Department of public works and transport, HOUAPHANH Province-Laos Author
Le Vinh An Department of Civil Engineering, Faculty of Engineering, University of Transport and Communications, Hanoi, Vietnam Author
Bui Xuan Cay Department of Civil Engineering, Faculty of Engineering, University of Transport and Communications, Hanoi, Vietnam Author

DOI:

https://doi.org/10.71026/ls.2024.02002

Keywords:

abrasion, coefficient of thermal expansion

Abstract

In this research, there will be an experimental study on the test to find the value of abrasion or shrinkage of concrete and to find the coefficient of thermal expansion of concrete in the group of samples brought to the test this time, samples of concrete grade 25MPa, 30MPa, and 35MPa will be taken, the age of the test sample is determined to be 28 days when the concrete is fully hardened, By the results of the experiment, the following values were concluded;

1). The cost of grinding or shrinking of 25Mpa grade concrete is equal to 0.20g/cm², 30Mpa grade concrete is equal to 0.13g/cm² and 30Mpa grade concrete is equal to 0.13g/cm². 2). The thermal expansion coefficient of concrete grade 25MPa has an average thermal expansion coefficient equal to 10.28x10^-6 ⁰C, 30MPa grade has an average thermal expansion coefficient equal to 9.252x10^-6 ⁰C and 35MPa grade has an average thermal expansion coefficient equal to 10.055x10^-6 ⁰C.