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            <front>

                <journal-meta>
                                    <journal-id></journal-id>
            <journal-title-group>
                                                                                    <journal-title>Politeknik Dergisi</journal-title>
            </journal-title-group>
                                        <issn pub-type="epub">2147-9429</issn>
                                                                                            <publisher>
                    <publisher-name>Gazi Üniversitesi</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.2339/politeknik.1635148</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Civil Engineering (Other)</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>İnşaat Mühendisliği (Diğer)</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <trans-title-group xml:lang="tr">
                                    <trans-title>Farklı Işık Dalga Boylarında Kürlenen Harçların Mekanik Özelliklerinin İncelenmesi</trans-title>
                                </trans-title-group>
                                                                                                                                                                                                <article-title>Investigation of the Mechanical Properties of Mortars Cured Under Different Light Wavelengths</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0002-8091-4990</contrib-id>
                                                                <name>
                                    <surname>Özbayrak</surname>
                                    <given-names>Ahmet</given-names>
                                </name>
                                                                    <aff>Erciyes Üniversitesi Mühendislik Fakültesi</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0009-0000-7001-0659</contrib-id>
                                                                <name>
                                    <surname>Yaman</surname>
                                    <given-names>Şaban</given-names>
                                </name>
                                                                    <aff>ERCİYES ÜNİVERSİTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20260303">
                    <day>03</day>
                    <month>03</month>
                    <year>2026</year>
                </pub-date>
                                        <volume>29</volume>
                                        <issue>1</issue>
                                        <fpage>1</fpage>
                                        <lpage>13</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20250207">
                        <day>02</day>
                        <month>07</month>
                        <year>2025</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20250429">
                        <day>04</day>
                        <month>29</month>
                        <year>2025</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 1998, Politeknik Dergisi</copyright-statement>
                    <copyright-year>1998</copyright-year>
                    <copyright-holder>Politeknik Dergisi</copyright-holder>
                </permissions>
            
                                                                                                <trans-abstract xml:lang="tr">
                            <p>Işık, bir tür titreşim olup her renk kendine özgü bir dalga boyuna sahiptir. İnsan gözü, bu farklı dalga boylarını ayırt ederek renkleri algılar. Renkler; tıptan madenciliğe, kimyadan tarıma kadar pek çok alanda yaygın olarak kullanılmaktadır. Nikola Tesla’nın &quot;Eğer evrenin sırlarını anlamak istiyorsanız, enerjiyi, frekansı ve titreşimi düşünün&quot; sözü, ışığın enerji ve frekans özelliklerinin incelenmesinin önemini vurgulamaktadır. Bu çalışmada, farklı renklerdeki LED ışıklar altında kürlenen harçların mekanik özelliklerine olan etkileri araştırılmıştır. Ayrıca pigment katkıları ile akrilik boya kaplamalarının bu etkiler üzerindeki rolleri de değerlendirilmiştir. Bu amaçla, boyutları 40×40×160 mm olan toplam 96 prizma harç numunesi hazırlanarak sekiz gruba ayrılmıştır. 28 günlük kür sürecinin ardından numunelere eğilme ve basınç dayanımı testleri uygulanmıştır. Test sonuçları, renkli LED ışıklar altında kürlemenin doğal gün ışığına kıyasla mekanik dayanımı artırdığını göstermiştir. En yüksek dayanım artışı mavi ışık altında gözlemlenirken, pigment katkıları genel olarak dayanımı azaltmıştır. Buna karşılık, akrilik boya kaplamaları dayanımı önemli ölçüde artırmıştır. Işık ve renk etkileşimlerinin çimento esaslı harçların dayanım özelliklerine etkisini inceleyen ilk çalışmalardan biri olan bu araştırma, literatüre önemli bir katkı sunmakta ve betonun ışık ve renk ile olan etkileşimlerinin daha iyi anlaşılması ve optimize edilmesine yönelik gelecekteki çalışmalar için sağlam bir temel oluşturmaktadır.</p></trans-abstract>
                                                                                                                                    <abstract><p>Light is a form of vibration, and each color has a distinct wavelength. The human eye perceives colors by distinguishing between these varying wavelengths. Colors are extensively used in fields ranging from medicine to mining, chemistry, and agriculture. Nikola Tesla&#039;s statement, &quot;If you wish to understand the secrets of the universe, think in terms of energy, frequency, and vibrations,&quot; highlights the importance of examining the energy and frequency characteristics of light. This study investigates the effects of curing mortars under LED lights of different colors on their mechanical properties. Additionally, the roles of pigment additives and acrylic paint coatings on these effects were evaluated. For this purpose, a total of 96 prism mortar specimens measuring 40x40x160 mm were prepared and divided into eight groups. After a 28-day curing process, the specimens were subjected to flexural and compressive strength tests. Test results revealed that curing under colored LED lights enhanced mechanical strength compared to curing under natural daylight. Blue light demonstrated the most significant contribution to strength, while pigment additives generally reduced strength. In contrast, acrylic paint coatings substantially increased strength. As one of the first studies to explore the effects of light and color interactions on the strength properties of cementitious mortars, this work makes a significant contribution to literature. Furthermore, it provides a solid foundation for future research aimed at better understanding and optimizing the interactions of concrete with light and color.</p></abstract>
                                                            
            
                                                                                        <kwd-group>
                                                    <kwd>Color</kwd>
                                                    <kwd>  wavelength</kwd>
                                                    <kwd>  curing</kwd>
                                                    <kwd>  frequency</kwd>
                                                    <kwd>  mortar</kwd>
                                                    <kwd>  mechanical properties</kwd>
                                            </kwd-group>
                            
                                                <kwd-group xml:lang="tr">
                                                    <kwd>Renk</kwd>
                                                    <kwd>  Dalga boyu</kwd>
                                                    <kwd>  Kürleme</kwd>
                                                    <kwd>  Frekans</kwd>
                                                    <kwd>  Harç</kwd>
                                                    <kwd>  Mekanik Özellikler</kwd>
                                            </kwd-group>
                                                                                                                                    <funding-group specific-use="FundRef">
                    <award-group>
                                                    <funding-source>
                                <named-content content-type="funder_name">The Scientific and Technological Research Council of Turkey</named-content>
                            </funding-source>
                                                                            <award-id>TÜBİTAK 2209/A</award-id>
                                            </award-group>
                </funding-group>
                                </article-meta>
    </front>
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