ANALYSIS OF SULFATE RESISTANCE OF CONCRETE WITH RCA AFTER ONE YEAR EXPOSURE TO SULFATE SOLUTIONS

Vesna Bulatović, Tiana Milović, Olivera Bukvić

DOI Number
https://doi.org/10.2298/FUACE230630026B
First page
035
Last page
043

Abstract


External sulfate attack is one of the durability problems associated with concrete. Despite a perception that concrete made with recycle concrete aggregate (RCA) is of inferior quality, research has shown that RCA has the potential to satisfy the mechanical and physical requirements for a range of applications. Limited works were performed on the durability aspects of the RCA. The objective of the research described in this paper was to evaluate resistance to sulfate attack of concrete with RCA in which two types of cement (CEM I and CEM III) and two water to cement ratios (0.38 and 0.55) were combined. For the evaluation of sulfate resistance of these concretes, immersed in sodium and potassium sulfate solutions, a drop of compressive strength, length change, capillary water absorption and thermal analysis (TGA-DTA) were used. Satisfactory sulfate resistance of concrete with RCA can be achieved by applying CEM III and reducing water to cement ratios.

Keywords

sulfate attack, recycled concrete aggregate (RCA), TGA-DTA, length change, capillary water absorption

Full Text:

PDF

References


Ali Babar, Ahsan Gulzar Muhammad, Raza Ali: Effect of sulfate activation of fly ash on mechanical and durability properties of recycled aggregate concrete. Construction and building materials, 277, 122329, 2021.

Zhang Hongru, Liu Wenshen, Zhang Jingbo, Liu Fujiang, Lin Xujian, Ji Tao: A new look at the resistance of recycled aggregate concrete (RAC) to the external sulfate attacks: The influence of the multiple mesoscopic material phases. Journal of Building Engineering, 64, 105653, 2023.

Li Yang, Zang Xianbing, Lou Peng, Wang Ruijun, Li Yanlong, Si Zheng: Sulfate attack resistance of recycled aggregate concrete with NaOH-solution-treated crumb rubber. Construction and building materials, 287, 123044, 2021.

SRPS EN 196-1:2017 - Methods of testing cement - Part 1: Determination of strength. Institute for standardization of Serbia.

SRPS EN 196-3:2017 - Methods of testing cement - Part 3: Determination of setting times and soundness. Institute for standardization of Serbia.

SRPS EN 196-6:2017 - Methods of testing cement - Part 6: Determination of fineness. Institute for standardization of Serbia.

SRPS EN 206-1:2011 - Concrete - Part 1: Specification performance, production and conformity. Institute for standardization of Serbia.

SRPS EN 12620: 2010 - Aggregates for concrete Institute for standardization of Serbia.

SRPS 12390-3:2010 - Testing hardened concrete - Part 3: Compressive strength of test specimens. Institute for standardization of Serbia.


Refbacks

  • There are currently no refbacks.


ISSN 0354-4605 (Print)
ISSN 2406-0860 (Online)
COBISS.SR-ID 98807559