Evaluation of mechanical strength and durability characteristics of eco-friendly mortar with cementitious additives

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F21%3A10248994" target="_blank" >RIV/61989100:27120/21:10248994 - isvavai.cz</a>

Result on the web

<a href="http://jase.tku.edu.tw/articles/jase-202108-24-4-0010.pdf" target="_blank" >http://jase.tku.edu.tw/articles/jase-202108-24-4-0010.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.6180/jase.202108_24(4).0010" target="_blank" >10.6180/jase.202108_24(4).0010</a>

Result language

angličtina

Original language name

Evaluation of mechanical strength and durability characteristics of eco-friendly mortar with cementitious additives

Original language description

The mechanical strength and durability of eco-friendly mortars used in the repair of marine concrete structures exposed to freshwater and seawater environments were evaluated in this paper. The eco-friendly mortar samples were produced using various ratios of fly ash (FA), ground granulated blast-furnace slag (GGBFS), and silica fume (SF) as cementitious materials. Seven mixtures of eco-friendly mortars, including a control mixture; three mixtures with respective substitutions of GGBFS for Portland cement of 10, 20, and 30% by cement mass; and three mixtures with respective additions of SF of 5, 10, and 15% by total binder mass, were used to produce the samples. Tests, including compressive strength, flexural strength, ultrasonic pulse velocity (UPV), electrical surface resistivity (ESR), rapid chloride ion penetration (RCP), thermal conductivity (TC), and microstructure analysis, were conducted to determine the mechanical strength and durability values of the samples. The experimental results show that replacing Portland cement with GGBFS negatively affected the properties of the mortars by reducing the mechanical strength, UPV, ESR, and TC while increasing the RCP in the samples. Also, adding an appropriate amount of SF could improve the mechanical strength and durability characteristics of the eco-friendly mortars. As a result, the mortar sample containing 30% GGBFS and 10% SF earned compressive and flexural strength values of approximately 49.2 and 13.8 MPa, respectively, at 56 days of curing age. Mortar samples with UPV values &gt;3660 m/s were identified as &quot;high quality&quot;. The corrosion resistance of all of the samples was found to be high, particularly in chloride-contaminated environments, due to relatively low (1000 - 2000 Coulombs) RCP values. The best overall performance was recorded for the sample containing 30% GGBFS and 10% SF.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20100 - Civil engineering

Project

—

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Applied Science and Engineering

ISSN

2708-9967

e-ISSN

—

Volume of the periodical

24

Issue of the periodical within the volume

4

Country of publishing house

TW - TAIWAN (PROVINCE OF CHINA)

Number of pages

12

Pages from-to

541-552

UT code for WoS article

000655398700010

EID of the result in the Scopus database

2-s2.0-85107286682