Buan Anshari

University of Mataram | UNRAM · Faculty of Engineering

Desa Teros adalah salah satu desa di wilayah Kecamatan Labuhan Haji Kabupaten Lombok Timur dengan tingkat kepadatan penduduk 5.009 jiwa/km2 dan termasuk kategori kepadatan tinggi. Kepadatan penduduk berpengaruh terhadap kesehatan lingkungan, rumah dan juga penghuninya. Rumah sebagai tempat tinggal harus memenuhi aspek keselamatan, kesehatan, kenyam...

Kabupaten Lombok Utara (KLU) merupakan daerah yang paling parah kerusakan rumah tinggal, sarana dan prasarana umum saat terjadi gempa Lombok tahun 2018 lalu. Sebagian besar korban jiwa dari KLU diakibatkan oleh terkena rerutuhan bangunan yang roboh akibat gempa bumi yang intensitasnya mencapi 6,9 Skala Richter saat itu yang disusul oleh gempa utama...

Sistem penyambungan bambu dengan mempergunakan klem kayu telah dikembangkan. Namun demikian, perlu penelitian lebih lanjut dengan mempergunakan klem berbahan plastik yang dicampur serbuk bambu yang memiliki sifat ringan, kekuatan tinggi dan biaya lebih murah dengan tetap menjaga kealamian bentuk bambu yang disambung. Tujuan penelitian ini adalah un...

The present work investigates the effect of surface treatment of ground tire rubber (GTR) waste on the tensile properties of GTR /epoxy composites. The GTR was treated using 10 wt% alkali solution and 1 wt% stearic acid in acetone. It was found that the treated GTR decreased the tensile strength, about 4.8 and 2.9% for NaOH-and stearic acid-treated...

Epoxy resin of the adhesives consist of structural adhesive and no structural adhesive. The one of structural adhesive is the S-CFN epoxy resin. Adhesive bonding is an effective method of joining many materials. In the other hand, welds, bolts, screws, rivets, and other mechanical fasteners are generally used for cold-formed steel joints. The AISI...

The statistical study of the glued-in rod splice connection for Mengkulang glulam timber is presented in this research. This type of connection is used in many applications, such as bridge construction and wide hall, besides becoming increasingly popular due to its cost-effectiveness and ease of installation. Using statistical analysis to evaluate...

Kapur (Dryobalanops spp.) is one of the Malaysian common species used for structural construction material. It is capable of serving as a beam and column. This study focused on the experimental mortise and tenon connection fastened with wood; glass fibre reinforced polymer (GFRP), and steel dowel. The finite element method (FEM) was used to model t...

Crushed dolomite with a nominal size of 8 mm and fine quartz sand with a nominal size of 2 mm were used to produce reactive powder concrete (RPC) in this study. The compressive strength is comparable to that of standard RPC with a maximum aggregate size of less than 0.6 mm. The use of crushed dolomite modified the mixing process and mechanical prop...

Program “penyusunan paket wisata dan pemasaran digital sebagai upaya penguatan desa wisata di lingkar Mandalika” adalah program Matching Fund Kedaireka 2022 atas kolaborasi Universitas Mataram, Genpi Nasional, dan Besiru Hub. Program ini didasari oleh terbatasnya kemampuan dalam mengemas paket wisata dan pemasaran digital oleh 16 desa wisata di sek...

Aggregates are the main material for road pavement made of natural stone. The availability of this natural stone will decrease because the stone is a non-renewable resource. The use of artificial aggregates can be an alternative to natural aggregates. The promotion of the use of waste as an artificial aggregates is starting to develop, especially w...

Kepulauan Indonesia merupakan wilayah yang rawan terjadi bencana geologi khususnya gempa bumi dan tsunami karena terletak pada pertemuan tiga lempeng dunia yaitu lempeng Eurasia, lempeng Indo-Australia dan lempeng Samudera Pasifika yang biasa disebut ring of fire. Pulau Lombok dan Sumbawa, berada pada posisi yang dekat dengan pertemuan dua lempeng...

Several reinforcement applications using glass fibre-reinforced polymer (GFRP) as strengthening material show greater structural strength without an increase of its dimensions. Though reinforcement is proven to be workable, there is minimal understanding of the optimum area should the GFRP be used in strengthening. This research aims to investigate...

This paper investigates five groups of compressed wood (CF), four of them made from compressed Japanese cedar with four different compression ratios (CR) of 33%, 50%, 67% and 70% and one without compression (control). The specimens were conditioned in relative humidity (RH) of 60% with moisture content (MC) of 12%. Mechanical properties tested were...

In this study, we investigated the effects of the filler content and ageing temperature on the water absorption and tensile properties of hydrophobic nano-calcium carbonate (NCC)/epoxy nanocomposites. The NCC content of the nanocomposites was varied from 0 to 5 wt%, while the ageing temperature was set at 28, 45, and 55°C in a distilled water bath....

Defleksi merupakan parameter penting untuk mengontrol elemen struktur balok elemen pada kondisi layan. Beberapa cara untuk menghitung defleksi diantaranya dengan metode matematis seperti luas momen, balok konjugasi, Castigliano's, prinsip kerja virtual dan metode numerik seperti metode beda hingga, elemen hingga dan lain lain. Dalam naskah ini, tel...

When wood structures are exposed to high temperatures, they will decompose to provide a char layer and pyrolysis zone, an insulating material that inhibits further degradation. This experimental study aims to determine the char thickness and pyrolysis of solid wood exposed to fire for 30, 45, and 60 minutes. The post-fire shear strength has also be...

The paper presents the effect of CaCO3 content on the tensile, flexural and water absorption properties of bamboo fiber/polystyrene-modified unsaturated polyester composites. Two volume fractions of bamboo fibers had been used with the CaCO3 content varied from 2.5 to 10 (wt%). The tensile and flexural properties were used to characterize the compo...

When wood structures are exposed to high temperatures, they will decompose to provide a char layer and pyrolysis zone, an insulating material that inhibits further degradation. This experimental study aims to determine the char thickness and pyrolysis of solid wood exposed to fire for 30, 45, and 60 minutes. The post-fire shearstrength has also bee...

Abstrak Penelitian ini mencoba memanfaatkan sisa atau limbah serat Rami dari industri tekstil untuk membuat material komposit dengan matriks Poliester dan artikel ini membahas mengenai perilaku lentur dari komposit yang dihasilkan. Penelitian ini menggunakan metode eksperimen yang didesain dengan pendekatan Design of Experiment (DOE) dimana analisi...

Sambungan merupakan bagian yang terlemah dari suatu konstruksi kayu, sehingga membutuhkan alat sambung yang kuat dan tahan lama. Sambungan dengan variasi sudut khususnya pada struktur rangka merupakan suatu hal yang sangat vital dan sering kita jumpai dalam konstruksi kayu. Diharapkan dari hasil penelitian ini dapat memberikan salah satu alternatif...

The paper presents the water absorption, swelling strain and the impact strength of alkalitreated bamboo fiber/polystyrene-modified unsaturated polyester (MUP) composites. The bamboo fibers were treated using alkali (sodium hydroxide) solution at the concentrations of 4, 8 and 12wt.% with the treatment times of 0.5, 1 and 2 hours under room (28 �C)...

Salah satu tantangan besar yang tengah dihadapi industri perkuatan struktur adalah isu green building materials. Penggunaan material dengan konsep ramah lingkunagn menjadi fokus yang harus diperhatikan guna kelestarian alam dan lingkungan. Pada umunya material utama yang digunakan dalam rekayasa perkuatan struktur masih terfokus pada penggunaan baj...

This study focuses on the experimental investigation of normal and sandwich reinforced concrete beam exposed to fire in order to evaluate their flexural stiffness. Two beams specimen of 200×300×4000 mm have been cast and tested under flexural loading. The first one has been a normal concrete beam (N) and the second one has been a sandwich concrete...

Provinsi Nusa Tenggara Barat (NTB), yang terdiri dari Pulau Lombok dan Sumbawa, berada pada posisi yang dekat dengan pertemuan dua lempeng yaitu Lempeng Indo-Australia di bagian selatan dan Lempeng Eurasia di bagian utara. Pada tempat pertemuan lempeng tersebut, yang dikenal dengan nama zona subduksi, terjadi tumbukan/pergesekan yang dapat menjadi...

Recently, the utilization of timber as building materials was very promising for now and future. As renewable resources they have high mechanical properties, lightweight, environmentally friendly and economic. One of the most durable engineered wood products is glued-laminated timber which commonly called Glulam. Glulam is a material made of severa...

Sand is one of the key material in civil engineering, which is sometime overlooked during the construction process. In many projects, the first concern is about the structure and then the material. The improper use of material doesn’t show significant signs in the early stage of building service. Using low quality material may give significant impa...

The paper presents the effect of fiber length on the mechanical properties and water absorption of bamboo fiber/polystyrene-modified unsaturated polyester composites. The fiber length varied from 2.5 mm to 15 mm at the fiber volume fraction of 0.2, 0.25 and 0.3. For water absorption, the specimens were immersed in distilled water at temperature of...

The paper presents the effects of alkali treatment on the tensile and flexural properties of bamboo fibre/polystyrene-modified unsaturated polyester (MUP) composites. The bamboo fibres were treated using alkali (NaOH) solution with concentrations of 4, 8 and 12% (by weight). The treatment time was 0.5, 1 and 2 hours under both room and elevated tem...

Abstract. Mataram city emphasizes development in sanitation sector. Especially for the waste sub-sector, in RPJMD Mataram City 2016-2021, it targets 100% for solid waste services. Mataram City has a landfill that is ± 19 km from the center of Mataram City. Waste generated in Mataram City is 1,440.7m3/day. In 2016 Mataram City bought 325 units of 3-...

Bamboo fibers are one of the abundant resources of natural fibers used for reinforcing polymer. Bamboo fiber is a candidate for replacing synthetic fibers such glass and carbon fibers as it has a specific strength that is comparable with glass fiber and is also biodegradable. However, generally the compatibility of natural fibers with polymer matri...

The selection of appropriate ready mix concrete suppliers is one of the important things in purchasing activity for the construction contractor. However, the selection of ready mix concrete suppliers is a multi-criteria problem that includes both quantitative and qualitative factors. One method that can be used for supplier selection is the AHP (An...

The design of tourism resort sometimes does not accommodate their stakeholder needs. The conventional method used financial aspect and technical approach. Those make design become more efficient but, sometimes the stakeholder wanted more than those two approaches. This study tried to use another method which is named The Value Engineering. The Valu...

Usage of timber and bamboo as building materials were very promising for now and future. As renewable resources, they have high mechanical properties, lightweight, environmentally friendly and economic. Utilization of bamboo as material to reinforced glued laminated (glulam) timber was rarely published. Therefore, this study focused on strengthenin...

An ultrasonic pulse velocity (UPV) test is often applied to determine the quality of concrete structures. It is well known that there are several factors which can influence the reading of ultrasonic velocity in concrete. One of the factors is the presence of steel reinforcement. Therefore, this paper is intended to evaluate the ultrasonic pulse ve...

Conventionally, curing is performed by moisturizing concrete periodically when the fresh concrete is still undergoing chemical reaction processes. This study is focused on early age concrete strength treated with special curing of early heating treatment and steaming. The addition of chemical accelerator and normal curing are also examined. Tests w...

p>A prototype of pedestrian bridge was constructed as a pilot project to utilize small diameter Teak woods planted in community forests. The bridge had a span length of 6 m and a width of 1.2 m consisted of floor deck of plywood and a 3-D space truss. Bolts of 10 mm in diameter and 3 mm thick of steel plates were used at the connection of this 3-D...

A new approach to strengthen glulam beams by using compressed wood was introduced by author. Compressed wood (CW) is made of a lower grade wood, which is densified in the radial direction under specific pressure and temperature conditions. In order to optimize the structural performance of glulam beams reinforced by compressed wood, in terms of loa...

The materials, dimensions, and composition of sandwich composite components are important parameters that influence the sandwich composite strength. This paper discusses the effect of sandwich composite skin and core thickness bending strength. Bamboo was used as a core of sandwich composite panels. The length of the bamboo was varied by cutting it...

Utilization of timber and bamboo as building materials was very promising for now and future. As renewable resources they have high mechanical properties, lightweight, environmentally friendly and economic. Utilization of bamboo as connector was rarely published. Therefore, this study focused on utilization of non-metal material as connector in tim...

ABSTRACT: Since the eruption of hot mud in Sidoarjo, East Java, in the 29th of May 2006, known as the Lusi mud volcano, soil embankment dams have been built surrounding the crater to hold hot mudflow within the ponds prior to dredging processes to the Kali Porong located near the eruption site. Problems due to the instability of the embankment dams...

This paper presents the study on structural behaviour of glulam beams pre-stressed by compressed wood (CW) in terms of load carrying capacity, strength and stiffness. Glulam beams were strengthened by inserting CW blocks into the pre-cut rectangular holes on the top of the beams. This practice was to make use of moisture-dependent swelling nature o...

Finite element models were, in the first time, developed to simulate the pre-stressing behaviour of Glulam beams with insertion of compressed wood blocks, which were further used to simulate the structural behaviour of the pre-stressed beams subjected to subsequent destructive bending. Here, both the Glulam and compressed wood were modelled as orth...

Usage of timber and bamboo as building materials is very promising for now and future. As renewable resources they have high mechanical properties, lightweight, environmentally friendly and economic. Utilization of bamboo as connector is rarely published. Therefore, this study focused on utilization of non-metal material as connector in timber stru...

A large amount of waste concrete generates an environmental problem due to demolition of old concrete structures. To solve this problem, it is necessary to collect recycled aggregate from waste concrete. The conventional recycling technique of recycled aggregate from waste concrete does not indicate a significant quality to be re-used for making a...

A new approach to reinforce glulam timber beams using compressed wood (CW) has been developed by the Author. The compressed wood blocks are inserted into pre-cut holes on the top of glulam beams to produce pre-camber and to generate initial tensile and compressive stresses on the top and on the bottom extreme fiber of the glulam beam, respectively....

ABSTRAK Kecenderungan pemakaian kayu akan terus meningkat, baik untuk keperluan struktural maupun industri. Hal ini perlu diimbangi dengan pengetahuan jenis kayu, sifat dan cara pengolahan kayu agar kayu dapat digunakan secara efektif dan efisien. Untuk memenuhi kebutuhan kayu yang semakin meningkat dimasa yang akan datang dan untuk memperoleh nila...

A new approach to reinforce glulam timber beams has been developed by using compressed wood (CW) which is made of a lower grade wood through densification processes. In the reinforcing practice, compressed wood blocks are inserted into pre-cut holes on the top of glulam beams to produce pre-camber and to generate initial tensile and compressive str...

In this study, glulam beams were strengthened by inserting compressed wood (CW) blocks into the pre-cut rectangular holes with one-thirds of the beam depth from the top of the beams. This practice was to make use of moisture-dependent swelling nature of the compressed wood which was conditioned with the moisture content significantly lower than the...

In this research, five groups of compressed wood specimens were investigated, four made from compressed Japanese cedar (Cryptomeria japonica D. Don) with compression ratios (CR) of 33%, 50%, 67% and 70%, and one without compressing for control purpose. The measurements of moisture-dependent swelling of the specimens were carried out in the R, T and...

In this study, five groups of specimens were investigated, four made from compressed Japanese cedar with 4 different of compression ratios (CR) of 33%, 50%, 67%, and 70% and one without compressing for controlling purpose. The specimens for mechanical property were conditioned in Relative Humidity (RH) of 60% with a target MC of 12%. Mechanical pro...

A new approach to reinforce glulam timber beams has been developed by using compressed wood (CW) which is made of a lower grade wood through densification processes. In the reinforcing practice, compressed wood blocks are inserted into pre-cut holes on the top of glulam beams to produce pre-camber and to generate initial tensile and compressive str...

This paper presents the study on structural behaviour of glue-laminated (glulam) timber beams reinforced by compressed wood (CW) in terms of load carrying capacity, strength and stiffness. Glulam beams were strengthened by inserting CW blocks into the pre-cut rectangular holes on the top of the beams. This practice was to make use of moisture-depen...

The use of timber as a structural material is not only limited to solid timber but also as laminate called glue-laminated timber (glulam). The design of glulam depends on many factors such as the expertise of the designer, timber grade and its combination, adhesive quality, gluing process and clamping process. This research explores the optimum cla...