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All Journal Jurnal Spektran Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal)
Maya Saridewi Pascanawaty
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Agriculture, Biological Sciences & Forestry Chemistry Civil Engineering, Building, Construction & Architecture Education Physics

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STUDI EKSPERIMENTAL TENTANG KEKUATAN DINDING BATA DENGAN PERKUATAN Maya Saridewi Pascanawaty; M Sukrawa; I.A M Budiwati
JURNAL SPEKTRAN Vol 4 No 1 (2016): Vol. 4, No. 1, Januari 2016
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (549.489 KB) | DOI: 10.24843/SPEKTRAN.2016.v04.i01.p05

Abstract

Abstract: Experimental study on the strength of brick walls have been done through literature review and laboratory testing to determine flexural, compressive and shear behaviour of the walls. Four different type of walls were used consisted of walls without plastering (TP), walls with plastering (DP), walls with plastering and chicken mesh reinforcement (DPK), and walls with plastering and wire mesh M4 reinforcement (DPW). The behaviour examined included load-deformation relationship and crack pattern/mode of failure. Laboratory testing included compression test (C) namely CTP, CDP, CDPK and CDPW; bond/shear strength test (S) namely STP, SDP, SDPK, and SDPW; flexural strength tests for failure plane perpendicular to bed joints (F) namely FTP?, FDP?, FDPK?, and FDPW?; and flexural strength tests for failure plane parallel to bed joints, namely FTP//, FDP//, FDPK// and FDPW//. Prior to testing the wall, tests on constituent materials were conducted. Red brick (made in Negara) showed compressive strength of 11,03 N/mm² with water absorption of 21,84%. Compressive strength of mortar was 9,1 N/mm². For the wall specimens testing was done after 28 days. The data obtained from the wall tests showed that compression strength for CTP, CDP, CDPK and CDPW are 3,82 N/mm², 3,84 N/mm², 7,46 N/mm², and 6,33 N/mm², respectively. Values for CDP, CDPK and CDPW are 1,01; 1,95; and 1,86 greater than that for CTP. Bond strength values of STP, SDP, SDPK and SDPW are 0,11 N/mm², 0,28 N/mm², 0,54 N,mm², and 0,42 N/mm², respectively. Values for SDP, SDPK and SDPW are 2,58; 4,88; and 3,87 greater than that of STP. Flexural strength values of FTP? and FDP? are 0,93 N/mm² and 1,27 N/mm², with a failure load for FTP?, FDP?, FDPK?, and FDPW? are sebesar 8,17 KN, 25,17 KN, 31,17 KN and 40,67 KN, respectively. The values for FDP?, FDPK?, and FDPW? are 3,08; 3,82; and 4,98 greater than that of FTP?. Flexural strength values of FTP// and FDP// are 0,38 N/mm² and 0,66 N/mm², with a failure load for FTP//, FDP//, FDPK//, and FDPW// are 3,5 KN, 13,67 KN, 18,33 KN and 32,83 KN, respectively. The values for FDP//, FDPK//, and FDPW// are 3,9; 5,24; and 9,38 greater than that of FTP//. The flexural strength of FDPK and FDPW that’s not analyzed because it was a shear failure and not a flexural failure. Stiffness (EA) for CTP, CDP, CDPK, and CDPW are 725,09 KN, 1096,32 KN,  2357,64 KN, and 1869,78 KN, respectively. The last three values are 1,5; 3,3; and 2,6  greater than that for CTP. Stiffness (EI) of FTP? was 23,78 KNm2, while stiffness of FDP?, FDPK? and FDPW? are 68,68 KNm2,  96,31 KNm2 and 112,17 KNm2, respectively, or 2,9; 4,0; and 4,7 greater than that for FTP?. Stiffness (EI) of FTP// was 12,99 KNm2, while stiffness of FDP//, FDPK//, and FDPW// were 46,89 KNm2, 84,53 KNm2 and 119,51 KNm2, respectively, or 3,6; 6,5; and 9,2 greater than that for FTP//.
Pengaruh Material Abu Batu Basalt, Semen, dan Pasir pada Peningkatan CBR Tanah Lempung untuk Stabilisasi Jalan Pujiastuti, Heni; Maya Saridewi Pascanawaty; Cita Santuni
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 1 (2025): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i1.594

Abstract

Soft clay often has poor mechanical properties for structures, including relatively low bearing capacity and a relatively large settlement. To increase the bearing capacity of clay, stabilization with a mixture of cement, sand, and basalt ash is necessary. The research was conducted in the laboratory of the University of Muhammadiyah Mataram. Soil samples were taken from Keruak Village, Keruak District, East Lombok Regency. Variations of cement mixture (SP) + sand (PS) + basalt ash (AB) were respectively 5% + 15% + 3%, 5% + 15% + 6% and 5% + 15% + 9%. Furthermore, soil physical properties testing, Proctor standard compaction test, and CBR test were conducted. From the Proctor compaction test, the optimum water content of the original soil was 32.80%. The mixture with a variation of 5% + 15% + 3% optimum water content was 31.20%, for 5% + 15% + 6% it was 30.90%, and 5% + 15% + 9% it was 30.00%. The results of the unsoaked CBR test on the unstabilized soil were 10.68%, and the soaked CBR value was 3.97%, if used as a subgrade for dirt roads, it must be stabilized first. From the three variations of the mixture above, the optimum CBR variation was obtained in the 5% S + 15% P + 6% ABB mixture, which was 13.58% or an increase in the CBR value of 27.153%. The CBR results with the mixture of 5%S+15%P+6%ABB can be used to stabilize clay soil.
Pengaruh Material Abu Batu Basalt, Semen, dan Pasir pada Peningkatan CBR Tanah Lempung untuk Stabilisasi Jalan Pujiastuti, Heni; Maya Saridewi Pascanawaty; Cita Santuni
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 1 (2025): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i1.594

Abstract

Soft clay often has poor mechanical properties for structures, including relatively low bearing capacity and a relatively large settlement. To increase the bearing capacity of clay, stabilization with a mixture of cement, sand, and basalt ash is necessary. The research was conducted in the laboratory of the University of Muhammadiyah Mataram. Soil samples were taken from Keruak Village, Keruak District, East Lombok Regency. Variations of cement mixture (SP) + sand (PS) + basalt ash (AB) were respectively 5% + 15% + 3%, 5% + 15% + 6% and 5% + 15% + 9%. Furthermore, soil physical properties testing, Proctor standard compaction test, and CBR test were conducted. From the Proctor compaction test, the optimum water content of the original soil was 32.80%. The mixture with a variation of 5% + 15% + 3% optimum water content was 31.20%, for 5% + 15% + 6% it was 30.90%, and 5% + 15% + 9% it was 30.00%. The results of the unsoaked CBR test on the unstabilized soil were 10.68%, and the soaked CBR value was 3.97%, if used as a subgrade for dirt roads, it must be stabilized first. From the three variations of the mixture above, the optimum CBR variation was obtained in the 5% S + 15% P + 6% ABB mixture, which was 13.58% or an increase in the CBR value of 27.153%. The CBR results with the mixture of 5%S+15%P+6%ABB can be used to stabilize clay soil.
Co-Authors Cita Santuni Heni Pujiastuti Heni Pujiastuti Ida Ayu Made Budiwati Made Sukrawa