Civil Engineering

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Browsing Civil Engineering by Author "Ermiyati"

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    ANALISA FAKTOR UMUR PAVING BLOCK
    (2013-04-22) Herman; Kurniawandy Alex; Ermiyati
    Paving block widely used in constructions, such as pavement, residential street, parking lot and many others. Easiness of installation, low cost maintenance, and beautiful aspect of it leads to more people prefer to use it, there are no set of standards to predict approximate age of paving block making it difficult for developer, contractor and owner to determine the compressive strength if it is not tested at age 28 days (more or less 28 days). Therefore, author conducted a study to test the compressive strength of paving block at age, 3,7,14,21,28,56, and 91 days, from this study we could know age factors value of amplify strength of paving block based on the increasing of paving block age. The study was conducted at “PT. Multi Guna Jaya Murah” with mixed composition obtained from proctor tests which conducted at “Laboratorium Teknologi Bahan Universitas Riau” the result of age factors value for paving blocks at age 3,7,14,21,28,56, and 91in sequences are 0 ,757; 0,837; 0,949; 0,986; 1.000; ,1,013; and 1,065 different with age factors value of a concrete are 0,400; 0,650; 0,880; 0,950; 1,000; 1,20; and 1,30.
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    PENGARUH PENAMBAHAN SILICA FUME PADA CAMPURAN PAVING BLOCK TERHADAP KARAKTERISTIK PAVING BLOCK
    (2013-04-22) Endika, Eko; Kurniawandy Alex; Ermiyati
    The purposes of this research are how to plan of paving block mixture optimum with the addition silica fume and to study the effect addition silica fume against paving block characteristics. That characteristics are compressive strength and water absorption. Mix design of paving block used proctor methods. The percentage of silica fume used 0%, 5%, 10%, 15%, and 20% by weight of cement. Specimens cube of 8 × 8 × 8 cm for compressive strength testing and specimens beam of 21 × 10,5 × 8 cm for water absorption testing with a total 75 samples. The compressive strength and water absorption were tested at 28 days. The results showed that the effect addition silica fume on paving block can increased the compressive strength and minimized the water absorption compared paving block without this additive. Compressive strength obtained with the addition 0%, 5%, 10%, 15%, and 20% silica fume were 36,5 MPa, 40 MPa; 39,5 MPa; 37,6 MPa, and 36,9 MPa. Water absorption obtained with the addition 0%, 5%, 10%, 15%, and 20% silica fume were 1,93%, 1,77%, 1,80%, 1,89%, and 1,91%. The highest compressive strength and the smallest water absorption were paving block with the addition 5% silica fume at 40 MPa and 1,77%.