KARAKTERISTIK DAN KLASIFIKASI TANAH BERPASIR DI DESA PAYA KECAMATAN SUKAJAYA SABANG DAN DESA ALUE NAGA KECAMATAN SYIAH KUALA BANDA ACEH

Penelitian ini bertujuan untuk mengetahui karakteristik dan klasifikasi tanah berdasarkan kunci taksonomi tanah pada vegetasi tanaman berdaun lebar, tanaman berdaun tunggal dan tanaman berdaun jarum. Penelitian ini sudah dilakukan di Desa Paya Kecamatan Sukajaya Kota Sabang dan Desa Alue Naga Kecamatan Syiah Kuala Kota Banda Aceh. Penelitian ini dimulai dari Bulan Mei sampai Juni 2016. Penelitian ini menggunakan metode deskriptif melalui survai lapangan. Parameter yang diamati berupa sifat fisika tanah dan kimia tanah baik yang diamati langsung dilapangan maupun analisis laboratorium. Terdapat 3 Pedon yaitu MAB-1(tanaman ketapang), MAB-2 (tanaman kelapa), MAB-3 (tanaman cemara) dengan jenis tanah Entisol dengan epipedon penciri epipedon okhrik, batas topografi mulai dari datar sampai dengan landai. MAB-1 memiliki karakteristik warna tanah 10 YR 2/1, C-organik 2,37% dan kejenuhan basa 72,23%. Pedon MAB-2 memiliki karakteristik warna tanah 7,5 YR 7/1, C-organik 0,53% dan kejenuhan basa 55,71%. Pedon MAB-3 memiliki karakteristik warna tanah 7,5 YR 7/1, C-organik 0,40% dan kejenuhan basa 61,96%. Horison Penciri bawah MAB-1 adalah horison Agrik, MAB-2 dan MAB-3 adalah horison Albik.Kata kunci: Karakteristik, Klasifikasi, Tanah berpasir

Geopolymer coating paste on concrete for photocatalytic performance

Construction materials mainly used Portland cement as raw materials mainly caused global warming effect around the world. This article report a review on a research work carried out on the use of geopolymer coating on the concrete surface with catalyst for a good adsorption and efficiency via photocatalytic activity using sunlight. The geopolymer paste deposited by coating on the concrete or other building construction surface. The geopolymer paste were prepared by mixing aluminosilicates material with alkaline activator added with catalyst materials such as titanium dioxide and zinc oxide. The performance of geopolymer coating in removal of dyes reported comparable with other materials. Photocatalytic activity performance evaluate by adsorption of dyes onto geopolymer

Characterization of LUSI Mud as Geopolymer Raw Material

The mud of mud volcano samples were collected from an eruption site named ‘LUSI’ (Lumpur “mud” –Sidoarjo), East Java, Indonesia for characterization. Analysis showed that, the major constituents of mud are SiO2 and Al2O3 which are higher than those in fly ash. The particle of mud has a flake-shaped particle and the overall particle size is dominated by particles between 2.5μm – 25.0μm. The results of XRD shows that mud of mud volcano have a characteristic of structurally disordered compounds, and a set of peaks corresponding to minor crystalline phases such as quartz, feldspars, and kaolinite. FTIR adsorption bands of the raw material of mud have the chemical bonding between bands 1-5

Feasibility study on utilization of palm fibre waste into fired clay brick

Malaysia is the second largest of palm oil producer after Indonesia, which contribute to 50 % of palm oil production. With this demand, the increasing of palm oil plantation over the years has led to the large production of agricultural waste, for example palm fibre waste. This study investigates different percentages of palm fibre (0 %, 1 %, 5 % and 10 %) to be incorporated into fired clay brick. Manufactured bricks were fired at 1 °C/min heating rate up to 1050 °C. The effects of manufacture bricks on the physical and mechanical properties of manufactured brick were also determined. All brick samples were tested due to the physical and mechanical properties which include dry density, firing shrinkage, initial rate of suction (IRS), water absorption, porosity and compressive strength. Findings show that increasing palm fibre waste affected the properties of brick, which decreased their density, besides increased firing shrinkage, IRS, water absorption, porosity and compressive strength. However, all the manufactured brick still followed the requirement

The influence of oil and energy consumption factors on fuel imports in former Soviet Union fuel economies

Due to the extensive energy usage derived from oil and fossil fuels, excessive fuel import levels have recently become an international concern. This issue deserves the attention of researchers and regulators. Consequently, this study examines the influence of electricity production from oil sources (EPOR), fossil fuel energy consumption (FFEC), energy use, industrialization, and population growth on oil and fuel imports in the Former Soviet Union (FSU) fuel economies. From 2011 to 2020, the article uses data from a secondary source such as World Development Indicators (WDI). Methods of Moments-Quantile-Regression (MMQR) were used to evaluate the relationship between the constructs in this research. EPOR, FFEC, energy consumption, industrialization, and population growth were found to have a positive relationship with oil and fuel imports in FSU fuel economies. The article guides designing laws to reduce oil and fuel imports by limiting oil and fuel-derived energy use.Haidar Ali Al Dulaimi (University of Babylon, College of Administration and Economics), Asam Mohamed Aljebory (University of Babylon College of Adminstration and Econimics), Mustafa Jawad Kadhim AL-Bakri (AL-Mustaqbal University College), Mustafa Kamil Shakeer (AL-Mustaqbal University College)Includes bibliographical references

Interpreting Analysis on Rhetorical Strategies Modeling in Computer Science Research Articles

Description on rhetorical strategies modeling proposed by experts in the field of language provides clues on strategies used in research writing. However, the interpretation and analysis on the utilization of the rhetorical strategies models are limited to comparing the strategies used in articles grouped according to research disciplines such as biomedical, linguistics, and arts. In view of the constraint, this chapter focuses on the interpretations of rhetorical strategies modeling by analyzing the computer science research articles in a few categories. The first interpretation of analysis is on the articles with high and low citation index, followed by analysis on the articles grouped according to journal wise population and lastly analysis on articles written by non-native writers. The interpretation of the analysis suggested that the strategies proposed in the models are used differently by the writers of articles with high and low citations, writers of different journals, and non-native writers. The descriptions provided in this chapter account on the important strategies utilized by highly cited writers, specific journals, and non-native writers

Reviews on the Properties of Aggregates made with or without Geopolymerisation Method

Aggregates are popular for use in concrete and lightweight concrete applications. Recent research shows that the by-product materials such as fly ash can be used as raw material in producing aggregates and lightweight aggregates. The usage of this material can improve the quality of the aggregates produced compared to conventional in term of structurally strong, physically stable, durable, and environmentally inert. This paper summarized the process and mechanical testing on the fly ash aggregates and lightweight aggregates to be used in concrete

Uncertainty-sensitive reasoning for inferring sameAs facts in linked data

albakri2016aInternational audienceDiscovering whether or not two URIs described in Linked Data -- in the same or different RDF datasets -- refer to the same real-world entity is crucial for building applications that exploit the cross-referencing of open data. A major challenge in data interlinking is to design tools that effectively deal with incomplete and noisy data, and exploit uncertain knowledge. In this paper, we model data interlinking as a reasoning problem with uncertainty. We introduce a probabilistic framework for modelling and reasoning over uncertain RDF facts and rules that is based on the semantics of probabilistic Datalog. We have designed an algorithm, ProbFR, based on this framework. Experiments on real-world datasets have shown the usefulness and effectiveness of our approach for data linkage and disambiguation

Clay-Based Materials in Geopolymer Technology

The term “geopolymer” was introduced by Davidovits in the 1970s. The prefix “geo” was selected to symbolize the constitutive relationship of the binders to geological materials, natural stone and/or minerals. Geopolymer is mineral polymers of inorganic polymer glasses with structure resembling natural zeolitic materials. Previously, geopolymer formation used source materials such as clay (e.g. kaolin and calcined kaolin) or industrial by-product (e.g. slag and fly ash). The precursor material plays an important role in the formation of geopolymer. The source material provides silicon (Si) and aluminum (Al) for reaction by an alkali activator solution. The Si and Al contents in the source materials dissolve in the alkaline activator solution and then polymerize to form a polymeric Si-O-Al-O framework which becomes the binder. Geopolymeric materials are attractive because of their excellent mechanical properties; durability and thermal stability can also be achieved. Owing to their low calcium content, they are more resistant to acid attack than materials based on Portland cement. In addition, they are of great interest because of the reduced energy requirement for their manufacture and the higher sustainability. Recently the search for alternative low cost and easily available materials led among others to Clay. Clay generally consists of a mixture of different clay minerals and associated minerals, which are strongly affected by the nature of the parent rocks. These materials are extensively distributed over the surface of the world and may show certain reactivity after a thermal activation process shows a great potential to be utilized in geopolymer technology. This article presents the potential of different types of clay as the source materials for geopolymerization reaction in terms of morphological properties. Moreover, the mechanical and microstructural properties of geopolymer made with various kinds of clay and its potential application are also presented

Chapter Fly Ash as a Cementitious Material for Concrete

This paper presents a review on fly ash as prime materials used for geopolymer. Due to its advantages of abundant resources, less in cost, great workability and high physical properties, fly ash leads to achieving high mechanical properties. Fly ash is considered as one of the largest generated industrial solid wastes or so-called industrial by-products, around the world particularly in China, India, and USA. The characteristics of fly ash allow it to be a geotechnical material to produce geopolymer cement or concrete as an alternative of ordinary Portland cement. Many efforts are made in this direction to formulate a suitable mix design of fly ash-based geopolymer by focusing on fly ash as the main prime material. The physical properties, chemical compositions, and chemical activation of fly ash are analyzed and evaluated in this review paper. Reference has been made to different ASTM, ACI standards, and other researches work in geopolymer area