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The Effect of Rice Husk Ash as Cement Substitution on the Compressive Strength of Self-Compacting Concrete Putri, Prima Yane; Kamil, Insannul; Rizandi, Alfin
CIVED Vol. 11 No. 2 (2024): June 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v11i2.493

Abstract

Self-Compacting Concrete (SCC) is an innovative solution in today's world of concrete technology. Unlike traditional concrete, it does not require a vibrator for compaction, which makes concrete work easier. One of the key features of SCC is its high workability, which is achieved through the use of chemical admixtures and mineral additives. Rice husk ash is one such additive that can be used as a pozzolanic material for concrete mixtures, which is important as rice husk waste can cause environmental problems. The objective of this study was to investigate the effect of rice husk ash on SCC concrete. The study involved using Rice Husk Ash (RHA) as a partial replacement for cement in SCC concrete at varying percentages (0%, 5%, 10%, and 15% of cement weight). The results of the slump flow test showed that the highest value of 775 mm was achieved at 15% RHA, meeting the specifications of SCC concrete. In terms of compressive strength, the results showed that the SCC mixture without rice husk ash (0% RHA) had the highest average compressive strength, which was 30.56 MPa at 14 days and 31.66 MPa at 28 days of concrete. On the other hand, the average compressive strength of SCC concrete with rice husk ash mixture was highest at 5% RHA, with 25.04 MPa at 14 days and 28.81 MPa at 28 days. Overall, the study found that the use of rice husk ash in SCC concrete had a significant effect on its compressive strength, with the highest compressive strength being achieved at 5% RHA.
Building Roof Covering Materials for Residential and Commercial: Comparison and Best Choices Artha, Hufa Weno; Syah, Nurhasan; Putri, Prima Yane
CIVED Vol. 11 No. 2 (2024): June 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v11i2.596

Abstract

Choosing the right roofing material is an important aspect of building design and construction. Both residential and commercial buildings have roof-related needs. But basically, the selection of roofing materials is not only for protection from but also based on energy efficiency, aesthetics, and longevity of the building. In addition, the design of roof shape selection must be done carefully because the wrong selection can cause rainwater seepage or leakage on the roof and high repair costs. This research aims to explore by comparing the characteristics of roof covering materials and provide the best choice based on needs. The research method used is a qualitative research method with the stages carried out, namely data collection techniques, sample determination, data analysis and research conclusions. Based on the analysis, it is concluded that for residential houses, tile roofs and concrete deck roofs are the best choice because they offer an optimal combination of aesthetics, durability, energy efficiency, and cost that is suitable for the Indonesian climate. While for commercial buildings, metal tile roof is an excellent choice due to its durability, energy efficiency, and modern aesthetics that suit the needs of commercial buildings.
Perkuatan Struktur Beton Dengan Metode Frp Pada Bangunan Gedung Harahap, Safrinanda; Putri, Prima Yane; Putra, Rusnardi Rahmat; Andayono, Totoh; Atika, Liana
Innovative: Journal Of Social Science Research Vol. 4 No. 3 (2024): Innovative: Journal Of Social Science Research (Special Issue)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i3.11533

Abstract

Perbaikan dan perkuatan struktur di perlukan apabila terjadi kerusakan yang menyebabkan degradasi yang berakibat tidak terpenuhinya lagi persyaratan persyaratan yang bersifat teknis. Secara umum dilakukannya perkuatan disebabkan oleh beberapa hal antara lain yaitu Kesalahan perencanaan, Kesalahan pelaksanaan, Perubahan fungsi yang berakibat penambahan beban,Perkembangan ilmu pengetahuan,Timbulnya keluhan terhadap kenyamanan struktur, Perubahan persyaratan untuk memenuhi peraturan Yang baru. Tahapan perkuatan struktur dapat dilakukan dengan cara review struktur, Analisis struktur, metode dan material perkuatan dan pelaksanaan. FRP juga dinilai sebagai alternatif perkuatan eksternal yang murah tapi mampu meningkatkan kinerja pada struktur bangunan. Pada metode ini, dua jenis serat yang paling banyak diaplikasikan adalah Glass Fiber Reinforced Polymer (GFRP), Carbon Fiber Reinforced Polymer (CFRP), dan aramid atau serat kaveler. FRP memiliki daya tarik tujuh hingga sepuluh kali lebih besar dibandingkan baja. Keunggulan dari perkuatan FRP ini yaitu bahan lebih ringan, kekuatan tarik tinggi, tidak terjadi korosi sehingga memiliki durabilitas (keawetan) yang tinggi, mudah dalam pemasangannya sehingga menghemat waktu serta bahannya mudah untuk dibentuk (fleksibel).