{"title":"Efek Penambahan Serat Limbah Botol Polyethylene Terephthalate (PET) dan Fly Ash Terhadap Hasil Uji Ultrasonic Pulse Velocity Pada Self Compacting Concrete","authors":"Rifki Alfirahman, Slamet Widodo","doi":"10.29103/tj.v13i1.795","DOIUrl":null,"url":null,"abstract":"<p align=\"center\"><strong>Abstrak</strong></p><p class=\"11daftarpustaka\"> Penelitian ini bertujuan untuk mengetahui pengaruh penggantian sebagian semen dengan <em>fly ash</em> dan penambahan serat plastik PET pada <em>Self Compacting Concrete (SCC)</em> terhadap karakteristik beton segar, kuat tekan beton, kecepatan rambat gelombang ultrasonik <em>(UPV), </em>dan modulus elastisitas dinamik. Penelitian ini termasuk dalam penelitian eksperimental yang dilakukan di laboratorium. Penambahan serat PET diberikan sebesar 0%; 0,25%; 0,50%; dan 0,75% berdasarkan <em>volume fraction </em>matriks beton. Sedangkan penggantian parsial semen dengan <em>fly ash </em>dilakukan sebesar 0% dan 15%. Terdapat delapan varian dalam penelitian ini. Masing-masing varian terdiri dari lima benda uji silinder berukuran 150×300 mm. Sehingga total terdapat 40 benda uji. Pengujian kuat tekan dan cepat rambat gelombang dilakukan saat benda uji berumur 56 hari. Pengukuran <em>UPV </em>dilakukan sebanyak lima titik setiap benda uji. Hasil penelitian menunjukkan bahwa kualitas campuran beton segar mengalami penurunan seiring dengan penambahan serat PET secara bertahap. Pada pengujian beton kondisi mengeras, penambahan serat PET cenderung menyebabkan penurunan kuat tekan, kecepatan gelombang ultrasonik, dan modulus elastisitas dinamik. Persentase penambahan serat PET pada campuran beton tanpa <em>fly ash </em>yaitu sebesar 0,50%, sedangkan pada campuran dengan subtitusi semen dengan 15% <em>fly ash </em>yaitu sebesar 0,25%.</p><p class=\"11daftarpustaka\"> </p><p class=\"11daftarpustaka\">Kata kunci: <em>Ultrasonic pulse velocity, kuat tekan, self compacting concrete, fly ash, serat plastik PET</em><em></em></p><p align=\"center\"><strong>Abstract</strong></p><p class=\"11daftarpustaka\">This study aims to determine the effect of partial replacement of cement with fly ash and the addition of PET plastic fibers to Self Compacting Concrete (SCC) on the characteristics of fresh concrete, compressive strength of concrete, Ultrasonic Pulse Velocity (UPV), and dynamic modulus of elasticity. This research classified as experimental research conducted in the laboratory. The addition of PET fiber is given at 0%; 0.25%; 0.50%; and 0.75% based on the volume fraction of the concrete matrix. While the partial replacement of cement with fly ash was carried out at 0% and 15%. There are eight variants in this study. Each variant consists of five cylindrical specimens 150×300 mm. So in total there are 40 specimens. Tests for compressive strength and UPV were carried out when the specimens were 56 days old. UPV measurements were carried out at five points for each specimens. The results showed that the quality of the fresh concrete mix decreased with the gradual addition of PET fiber. In testing the hardened condition of concrete, the addition of PET fibers tends to cause a decrease in compressive strength, ultrasonic wave speed, and dynamic elastic modulus. The percentage of addition of PET fiber to the concrete mixture without fly ash was 0.50%, whereas in the mixture with cement substitution with 15% fly ash, it was 0.25%.</p><p class=\"11daftarpustaka\"> Keywords: <em>Ultrasonic pulse velocity, compressive strength, self compacting concrete, fly ash, PET plastic fiber<em></em></em></p><p class=\"11daftarpustaka\"><br /><em></em></p>","PeriodicalId":52898,"journal":{"name":"Teras Jurnal Jurnal Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Teras Jurnal Jurnal Teknik Sipil","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.29103/tj.v13i1.795","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstrak
Penelitian ini bertujuan untuk mengetahui pengaruh penggantian sebagian semen dengan fly ash dan penambahan serat plastik PET pada Self Compacting Concrete (SCC) terhadap karakteristik beton segar, kuat tekan beton, kecepatan rambat gelombang ultrasonik (UPV), dan modulus elastisitas dinamik. Penelitian ini termasuk dalam penelitian eksperimental yang dilakukan di laboratorium. Penambahan serat PET diberikan sebesar 0%; 0,25%; 0,50%; dan 0,75% berdasarkan volume fraction matriks beton. Sedangkan penggantian parsial semen dengan fly ash dilakukan sebesar 0% dan 15%. Terdapat delapan varian dalam penelitian ini. Masing-masing varian terdiri dari lima benda uji silinder berukuran 150×300 mm. Sehingga total terdapat 40 benda uji. Pengujian kuat tekan dan cepat rambat gelombang dilakukan saat benda uji berumur 56 hari. Pengukuran UPV dilakukan sebanyak lima titik setiap benda uji. Hasil penelitian menunjukkan bahwa kualitas campuran beton segar mengalami penurunan seiring dengan penambahan serat PET secara bertahap. Pada pengujian beton kondisi mengeras, penambahan serat PET cenderung menyebabkan penurunan kuat tekan, kecepatan gelombang ultrasonik, dan modulus elastisitas dinamik. Persentase penambahan serat PET pada campuran beton tanpa fly ash yaitu sebesar 0,50%, sedangkan pada campuran dengan subtitusi semen dengan 15% fly ash yaitu sebesar 0,25%.
Kata kunci: Ultrasonic pulse velocity, kuat tekan, self compacting concrete, fly ash, serat plastik PET
Abstract
This study aims to determine the effect of partial replacement of cement with fly ash and the addition of PET plastic fibers to Self Compacting Concrete (SCC) on the characteristics of fresh concrete, compressive strength of concrete, Ultrasonic Pulse Velocity (UPV), and dynamic modulus of elasticity. This research classified as experimental research conducted in the laboratory. The addition of PET fiber is given at 0%; 0.25%; 0.50%; and 0.75% based on the volume fraction of the concrete matrix. While the partial replacement of cement with fly ash was carried out at 0% and 15%. There are eight variants in this study. Each variant consists of five cylindrical specimens 150×300 mm. So in total there are 40 specimens. Tests for compressive strength and UPV were carried out when the specimens were 56 days old. UPV measurements were carried out at five points for each specimens. The results showed that the quality of the fresh concrete mix decreased with the gradual addition of PET fiber. In testing the hardened condition of concrete, the addition of PET fibers tends to cause a decrease in compressive strength, ultrasonic wave speed, and dynamic elastic modulus. The percentage of addition of PET fiber to the concrete mixture without fly ash was 0.50%, whereas in the mixture with cement substitution with 15% fly ash, it was 0.25%.
本研究旨在探讨用飞灰代替部分水泥和在自动压缩混凝土中加入PET塑料纤维对新鲜、强压混凝土、冲压超声波和动态弹性模的影响。这项研究属于在实验室进行的实验研究。给宠物纤维的加法为0%;0,25%;0,50%;为混凝土矩阵的体积增加75%。而部分水泥置换灰则为0%和15%。这项研究有八种变体。每人测试物体组成的五缸变体×150×300毫米。所以总共有40个测试对象。在测试对象56天的时候，进行了强媒体快速扫荡测试。UPV测量每测试对象进行5次。研究表明，新鲜混凝土混合物的质量随着宠物纤维的逐渐增加而下降。在硬化条件具体测试中，PET纤维的增加会导致压实下降、超声波波速度和动态弹性模。在没有苍蝇灰的混凝土混合物中加入宠物纤维的比例为0.50%，而在复合材料中加入15%苍蝇灰的比例为0.25%。关键词:超声波脉冲速度,强大的压力,赛尔夫compacting混凝土、飞灰纤维塑料PETAbstractThis study aims to个重大部分替换之效应的水泥飞灰和赛尔夫之加法,PET塑料纤维到compacting混凝土(SCC) on the characteristics of新鲜混凝土,混凝土的compressive力量、超声波脉冲速度(UPV)和动态modulus of elasticity。这是一项机密研究，是实验室的实验。宠物纤维的添加得到0%;0。25%;0。50%;基于混凝土矩阵的体积体积的0.75%。由于火山灰的部分替换量是0%和15%。这个研究有8个变量。每你的公司五cylindrical specimens 150×300毫米。所以总共有40个物种。当一个物种有56天的年龄时，因压力和上升而进行的测试令人担忧。UPV测量结果显示每个物种有五个重点。最近的建议表明，新混凝土的质量随着宠物纤维的渐变而退化。在试验混凝土的严酷条件下，宠物纤维的增加导致了压缩强度、超声波速度和动态弹性模子的退化。未飞行的宠物混合物的添加剂是0.50%，在这一点上与充气替代品15%的混合物中，是0.25%。超声波脉冲速度，压缩强度，自我压缩强度，飞灰，宠物纤维
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