{
    "abstract": "The high alkaline condition of concrete naturally protects embedded steel bars from corrosion by forming a passive protective film. The pH of concrete is generally high, but concrete with different mix compositions may have various pH values. The pH of concrete may decrease over time due to long-term mechanical, chemical, biological and physical factors. Therefore, monitoring the pH value of concrete is crucial to checking if its alkalinity is within an acceptable range and ensuring that the concrete structure is in good health condition. However, the pH measurement for cement-based materials is not standardised. Ex-situ leaching, one of the recommended methods for pH measurement, is simple and practical. In this method, the sample will be crushed, leached and tested using a pH electrode probe. The lifespan of the pH electrode probe may decrease due to the existing suspended particles in the solution. Therefore, one recommendation is to filter the solution before using the probe. In this study, the effect of different filtering setups on the pH value of a cement mortar with a cement-to-sand ratio of 1:3 was evaluated. pH test results showed that filtering can produce similar outcomes to those without filtering, regardless of the type of filter paper and its pore size. However, filtering is strongly recommended for electrode protection of the pH meter. As an innovative filtering setup for cement-based materials, syringe filtering was introduced in this study because it is more economical and its operation is simpler compared to the other methods.",
    "authors": [
        {
            "affiliation": "Centre for Building, Construction & Tropical Architecture (BuCTA), Faculty of Built Environment, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.\nDepartment of Architecture, Faculty of Built Environment, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.",
            "firstname": "Poh-Yee",
            "initials": "PY",
            "lastname": "Loh"
        },
        {
            "affiliation": "Centre for Building, Construction & Tropical Architecture (BuCTA), Faculty of Built Environment, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.\nDepartment of Architecture, Faculty of Built Environment, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.",
            "firstname": "Payam",
            "initials": "P",
            "lastname": "Shafigh"
        },
        {
            "affiliation": "Department of Civil Engineering, University Tenaga Nasional, Kajang 43000, Malaysia.",
            "firstname": "Herda Yati",
            "initials": "HY",
            "lastname": "Katman"
        },
        {
            "affiliation": "Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.",
            "firstname": "Zainah",
            "initials": "Z",
            "lastname": "Ibrahim"
        }
    ],
    "conclusions": null,
    "copyrights": "\u00a9 2024 The Authors.",
    "doi": "10.1016/j.heliyon.2024.e25859",
    "journal": "Heliyon",
    "keywords": [
        "Cement mortar",
        "Ex-situ leaching",
        "Filtering setup",
        "Syringe filtering",
        "pH measurement",
        "pH value"
    ],
    "methods": null,
    "publication_date": "2024-02-23",
    "pubmed_id": "38390157",
    "results": null,
    "title": "Effect of filtering method on the pH measurement of cement mortar in ex-situ leaching.",
    "xml": "<Element 'PubmedArticle' at 0x7885037fb150>"
}