Pemanfaatan Sedimen Sungai Untuk Bahan Baku Unfired Bricks (Bata Tanpa Bakar)

The land use change in a watershed cause erosion resulting in sedimentation in river channels. Physically treatment of sedimentation requires a considerable cost, hence it is necessary to find another alternative treatment, i.e. by utilizing river sediment for building materials. Brick is a building material that is widely produced and used by the society. To provide solutions for sediment reduction, it is necessary to do a research on the utilization of river sediment for brick raw materials. In this study, the utilization of sediment into bricks was proposed in the form of Unfired Bricks. Raw sediment material will be mixed with cement and sand with a certain composition to increase the compression strength of brick in order to meet one of the SNI requirements, i.e. 15-2094-2000 or SNI 03-0349-1989. Results found that the addition of cement and sand treatment can increase the compressive strength of the brick up to 44,176 kg/cm² at the age of 14 days. However, the compression strength test results are still below the compression strength of Red Brick requirements in accordance with SNI 15-2094-2000 where the minimum compression strength of brick is 50 kg /cm², but it qualify for the compression Strength Concrete Brick SNI 03-0349-1989 for the quality level of grade III with a minimum of 40 kg / cm² and grade IV with a minimum of 25 kg / cm²

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Effects of Temperature and Concentration on the Nano-Sized Hydroxyapatite Whisker Prepared by Chemical Precipitation Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.353-358.2191 ◽

2007 ◽

Vol 353-358 ◽

pp. 2191-2194

Author(s):

Yun Qiang Bai ◽

Mu Sen Li ◽

Yu Peng Lu ◽

Ning Cao

Keyword(s):

Heat Treatment ◽

Raw Materials ◽

Chemical Precipitation ◽

Strength Test ◽

Precipitation Method ◽

Test Results ◽

X Ray Diffraction ◽

Transmission Electron ◽

Synthetic Temperature ◽

Effects Of Temperature

Chemical precipitation is a popular method for the preparation of hydroxyapatite(Ca10 (PO4)6 (OH)2, HA) because of its simple operation. In this work, nano-sized HA whiskers were synthesized at various synthetic temperatures and concentration by chemical precipitation with Ca (NO3) 2·4H2O and (NH4) 2HPO4 as raw materials. Heat treatment was carried out after they were synthesized. The HA powders were analyzed by using X-ray diffraction (XRD), transmission electron microscope (TEM) and strength test in order to find the favorable growing condition for HA whiskers. The results show that the HA prepared at different synthetic temperatures show no impurity diffraction peak, indicating that they have a high purity. Prior to heat treatment, the crystallinity and length/diameter ratio of the HA whiskers become larger with the increasing of synthetic temperature. So a higher synthetic temperature can promote the growth of the HA whiskers. There is no obvious difference in crystallinity after the heat treatment. Besides, a lower reaction concentration can also promote the growth of HA whiskers. The strength test results show that the compressive strength of the HA prepared gets a maximum value at 50°C.

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Potensi Penerapan Self-Locking Wall pada Pemanfaatan Limbah Sludge Deinking Industri Kertas sebagai Batako Interlok

JURNAL SELULOSA ◽

10.25269/jsel.v1i01.19 ◽

2016 ◽

Vol 1 (01) ◽

Author(s):

Reza Bastari Imran Wattimena ◽

Aep Surachman ◽

Wachyudin Aziz

Keyword(s):

Factor Of Safety ◽

Building Materials ◽

Raw Materials ◽

Production Capacity ◽

Wastewater Sludge ◽

Quality Level ◽

Physical Test ◽

Knock Down ◽

Composition Variation ◽

Interlock System

This research utilize the wastewater sludge into construction/building materials, i.e brick (brick concrete) as partition interlock system (self-locking wall). With the amount of deinking sludge ranged 3-4% of production capacity and moisture content reaches 60-80%, providing an opportunity for the beneficiaries in the availability of cheap raw materials. This experiment using composition variation of cement : sand : sludge to determine optimum composition based on the physical test for several parameters such as compressive strength and Factor of Safety (FOS). Solidwork 2009® software is used to determined the shape and dimension that suitable to be applied at knock-down house. This program is also used to analyze the strength of self-locking wall products with different forms of locking to improve the strength and meets the minimum quality level of “Mutu Bata Beton Pasangan Dinding” (SNI 03-0349-1989), that is 21 kg/cm2. It shows that interlock brick from deinked pulp and waste paper, compotition 1 : 8 with 50 & 70% sludge persentation give good result to be used as self-locking wall concept.Key words : sludge, interlock brick, knock-down house, self-locking wall ABSTRAKPenelitian ini memanfaatkan sludge industri kertas menjadi bahan bangunan batako (bata beton) sebagai partisi dengan pemasangan sistem interlock (self-locking wall). Jumlah sludge industri kertas berkisar 3–4 % kapasitas produksi dengan kadar air 60–80% memberikan peluang ketersediaan bahan baku yang murah. Percobaan menggunakan variasi komposisi semen : pasir : sludge untuk menentukan komposisi yang optimum atas dasar uji fisik beberapa parameter seperti kuat tekan dan Factor of Safety (FOS). Untuk merancang produk, dimanfaatkan perangkat lunak Solidworks® 2009, sehingga didapatkan bentuk dan dimensi yang sesuai untuk diterapkan pada rumah knock down. Dengan perangkat lunak ini dapat diperoleh bentuk pengunci yang dapat membantu meningkatkan kekuatan produk self locking wall yang memenuhi persyaratan Mutu Bata Beton Pasangan Dinding (SNI 03-0349-1989) kelas IV sebesar 21 kg/cm2. Hasil penelitian menunjukkan bahwa batako interlok menggunakan campuran bahan baku deinked pulp dan kertas bekas, komposisi 1 : 8 dengan persentase serat sebanyak 50% & 70% memenuhi persyaratan untuk digunakan sebagai pengisi dinding/partisi sistem self-locking wall.Kata kunci : limbah padat, batako interlok, knock-down, self-locking wall

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Differential Analysis of Volumetric Strain Method Characterization in the Context of Phase Change of Water in Carbonate Rocks

Materials ◽

10.3390/ma15010308 ◽

2022 ◽

Vol 15 (1) ◽

pp. 308

Author(s):

Karol Skowera ◽

Zbigniew Rusin

Keyword(s):

Carbonate Rocks ◽

Building Materials ◽

Geometrical Structure ◽

Raw Materials ◽

Pore Space ◽

Modern Science ◽

Volumetric Strain ◽

Extensive Literature ◽

Test Results ◽

Differential Analysis

Modernized technological processes or increasing demands on building materials force the scientific community to analyze in more detail the suitability of individual raw materials and deposits. New or modernized research methodologies make it possible to better understand not only the geometrical structure of the pore space of materials but also the processes taking place in them and the interaction of many factors at the same time. Despite the extensive literature in the field of research on capillary-porous materials, scientists still face many challenges because not everything is known. Carbonate rocks are the most common (one-tenth of Earth’s crust) sedimentary rocks. Analysis of the test results obtained with the use of the modernized differentia analysis of volumetric strain (DAVS) methodology allows for a better adjustment of rock deposits to the products that can be produced from them. In this manner, it is possible that it will contribute to a more rational use of exhaustible rock deposits and not only carbonate ones. This research subject is of great importance for modern science, which was also noted in many of science publications.

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Towards the Use of Yellow Clay in Fired Bricks

10.5772/intechopen.99009 ◽

2021 ◽

Author(s):

Maryam Achik ◽

Boutaina Moumni ◽

Hayat Benmoussa ◽

Abdellah Oulmekki ◽

Abdelhamid Touache ◽

...

Keyword(s):

Mechanical Strength ◽

Building Materials ◽

Raw Materials ◽

Test Results ◽

Technological Properties ◽

Clay Bricks ◽

Fired Bricks ◽

Yellow Clay ◽

Different Content ◽

Mineral Waste

This chapter deals with the study of the possibility of using yellow clay - which was only used in pottery so far- in the civil engineering field as building materials, especially in the field of fired bricks. With the aim to improve the technological properties of yellow clay based bricks, two wastes were used as secondary raw materials. The first one is a mineral waste - pyrrhotite ash - this waste was neither characterized nor valued before by any other author. While the second waste is an organic waste - cedar sawdust - which is from the artisanal sector. Clay bricks containing yellow clay and different content of wastes were prepared and tested to evaluate their technological properties: water absorption, bulk density, porosity and mechanical strength… The test results indicate that the addition of wastes to clay bricks improves their technological properties and highlights the possibility of wastes reuse in a safe and sustainable way.

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Thermal Characterization of Recycled Materials for Building Insulation

Energies ◽

10.3390/en14123564 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3564

Author(s):

Arnas Majumder ◽

Laura Canale ◽

Costantino Carlo Mastino ◽

Antonio Pacitto ◽

Andrea Frattolillo ◽

...

Keyword(s):

Environmental Impact ◽

Environmental Sustainability ◽

Building Materials ◽

Raw Materials ◽

Natural Fibers ◽

Thermal Characterization ◽

Recycled Materials ◽

Building Insulation ◽

Operational Phase

The building sector is known to have a significant environmental impact, considering that it is the largest contributor to global greenhouse gas emissions of around 36% and is also responsible for about 40% of global energy consumption. Of this, about 50% takes place during the building operational phase, while around 10–20% is consumed in materials manufacturing, transport and building construction, maintenance, and demolition. Increasing the necessity of reducing the environmental impact of buildings has led to enhancing not only the thermal performances of building materials, but also the environmental sustainability of their production chains and waste prevention. As a consequence, novel thermo-insulating building materials or products have been developed by using both locally produced natural and waste/recycled materials that are able to provide good thermal performances while also having a lower environmental impact. In this context, the aim of this work is to provide a detailed analysis for the thermal characterization of recycled materials for building insulation. To this end, the thermal behavior of different materials representing industrial residual or wastes collected or recycled using Sardinian zero-km locally available raw materials was investigated, namely: (1) plasters with recycled materials; (2) plasters with natural fibers; and (3) building insulation materials with natural fibers. Results indicate that the investigated materials were able to improve not only the energy performances but also the environmental comfort in both new and in existing buildings. In particular, plasters and mortars with recycled materials and with natural fibers showed, respectively, values of thermal conductivity (at 20 °C) lower than 0.475 and 0.272 W/(m⋅K), while that of building materials with natural fibers was always lower than 0.162 W/(m⋅K) with lower values for compounds with recycled materials (0.107 W/(m⋅K)). Further developments are underway to analyze the mechanical properties of these materials.

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Architectural ruins: geoculture of the anatomy of buildings as illustrated by Casa Ippolito, Malta

Heritage Science ◽

10.1186/s40494-021-00500-9 ◽

2021 ◽

Vol 9 (1) ◽

Author(s):

Lino Bianco

Keyword(s):

Material Culture ◽

Building Materials ◽

Raw Materials ◽

Primary Source ◽

Secondary Sources ◽

Non Invasive ◽

History Of ◽

Aerial Vehicle ◽

Materials Used ◽

Building Physics

AbstractRuins are a statement on the building materials used and the construction method employed. Casa Ippolito, now in ruins, is typical of 17th-century Maltese aristocratic country residences. It represents an illustration of secondary or anthropogenic geodiversity. This paper scrutinises these ruins as a primary source in reconstructing the building’s architecture. The methodology involved on-site geographical surveying, including visual inspection and non-invasive tests, a geological survey of the local lithostratigraphy, and examination of notarial deeds and secondary sources to support findings about the building’s history as read from its ruins. An unmanned aerial vehicle was used to digitally record the parlous state of the architectural structure and karsten tubes were used to quantify the surface porosity of the limestone. The results are expressed from four perspectives. The anatomy of Casa Ippolito, as revealed in its ruins, provides a cross-section of its building history and shows two distinct phases in its construction. The tissue of Casa Ippolito—the building elements and materials—speaks of the knowledge of raw materials and their properties among the builders who worked on both phases. The architectural history of Casa Ippolito reveals how it supported its inhabitants’ wellbeing in terms of shelter, water and food. Finally, the ruins in their present state bring to the fore the site’s potential for cultural tourism. This case study aims to show that such ruins are not just geocultural remains of historical built fabric. They are open wounds in the built structure; they underpin the anatomy of the building and support insights into its former dynamics. Ruins offer an essay in material culture and building physics. Architectural ruins of masonry structures are anthropogenic discourse rendered in stone which facilitate not only the reconstruction of spaces but also places for human users; they are a statement on the wellbeing of humanity throughout history.

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Crushed Bricks: Demolition Waste as a Sustainable Raw Material for Geopolymers

Sustainability ◽

10.3390/su13147572 ◽

2021 ◽

Vol 13 (14) ◽

pp. 7572

Author(s):

Gigliola D’Angelo ◽

Marina Fumo ◽

Mercedes del Rio Merino ◽

Ilaria Capasso ◽

Assunta Campanile ◽

...

Keyword(s):

Energy Consumption ◽

Building Materials ◽

Mechanical Performance ◽

Raw Materials ◽

Construction Material ◽

Raw Material ◽

The European Union ◽

Total Energy Consumption ◽

Demolition Waste ◽

Crushed Brick

Demolition activity plays an important role in the total energy consumption of the construction industry in the European Union. The indiscriminate use of non-renewable raw materials, energy consumption, and unsustainable design has led to a redefinition of the criteria to ensure environmental protection. This article introduces an experimental plan that determines the viability of a new type of construction material, obtained from crushed brick waste, to be introduced into the construction market. The potential of crushed brick waste as a raw material in the production of building precast products, obtained by curing a geopolymeric blend at 60 °C for 3 days, has been exploited. Geopolymers represent an important alternative in reducing emissions and energy consumption, whilst, at the same time, achieving a considerable mechanical performance. The results obtained from this study show that the geopolymers produced from crushed brick were characterized by good properties in terms of open porosity, water absorption, mechanical strength, and surface resistance values when compared to building materials produced using traditional technologies.

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Recycling silver nanoparticle debris from laser ablation of silver nanowire in liquid media toward minimum material waste

Scientific Reports ◽

10.1038/s41598-021-81692-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

June Sik Hwang ◽

Jong-Eun Park ◽

Gun Woo Kim ◽

Hyeono Nam ◽

Sangseok Yu ◽

...

Keyword(s):

Laser Ablation ◽

Silver Nanoparticle ◽

Building Materials ◽

Raw Materials ◽

Silver Nanowires ◽

Silver Nanowire ◽

Liquid Media ◽

Ag Nps ◽

Laser Patterning ◽

Inexpensive Procedure

AbstractAs silver nanowires (Ag NWs) are usually manufactured by chemical synthesis, a patterning process is needed to use them as functional devices. Pulsed laser ablation is a promising Ag NW patterning process because it is a simple and inexpensive procedure. However, this process has a disadvantage in that target materials are wasted owing to the subtractive nature of the process involving the removal of unnecessary materials, and large quantities of raw materials are required. In this study, we report a minimum-waste laser patterning process utilizing silver nanoparticle (Ag NP) debris obtained through laser ablation of Ag NWs in liquid media. Since the generated Ag NPs can be used for several applications, wastage of Ag NWs, which is inevitable in conventional laser patterning processes, is dramatically reduced. In addition, electrophoretic deposition of the recycled Ag NPs onto non-ablated Ag NWs allows easy fabrication of junction-enhanced Ag NWs from the deposited Ag NPs. The unique advantage of this method lies in using recycled Ag NPs as building materials, eliminating the additional cost of junction welding Ag NWs. These fabricated Ag NW substrates could be utilized as transparent heaters and stretchable TCEs, thereby validating the effectiveness of the proposed process.

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Effect of Fly Ash on Compressive Strength, Drying Shrinkage, and Carbonation Depth of Mortar with Ferronickel-Slag Powder

Applied Sciences ◽

10.3390/app11031037 ◽

2021 ◽

Vol 11 (3) ◽

pp. 1037

Author(s):

Se-Jin Choi ◽

Ji-Hwan Kim ◽

Sung-Ho Bae ◽

Tae-Gue Oh

Keyword(s):

Compressive Strength ◽

Fly Ash ◽

Construction Industry ◽

Bituminous Coal ◽

Raw Materials ◽

Drying Shrinkage ◽

The Other ◽

Test Results ◽

Slag Powder ◽

Ferronickel Slag

In recent years, efforts to reduce greenhouse gas emissions have continued worldwide. In the construction industry, a large amount of CO2 is generated during the production of Portland cement, and various studies are being conducted to reduce the amount of cement and enable the use of cement substitutes. Ferronickel slag is a by-product generated by melting materials such as nickel ore and bituminous coal, which are used as raw materials to produce ferronickel at high temperatures. In this study, we investigated the fluidity, microhydration heat, compressive strength, drying shrinkage, and carbonation characteristics of a ternary cement mortar including ferronickel-slag powder and fly ash. According to the test results, the microhydration heat of the FA20FN00 sample was slightly higher than that of the FA00FN20 sample. The 28-day compressive strength of the FA20FN00 mix was approximately 39.6 MPa, which was higher than that of the other samples, whereas the compressive strength of the FA05FN15 mix including 15% of ferronickel-slag powder was approximately 11.6% lower than that of the FA20FN00 mix. The drying shrinkage of the FA20FN00 sample without ferronickel-slag powder was the highest after 56 days, whereas the FA00FN20 sample without fly ash showed the lowest shrinkage compared to the other mixes.

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The Influence of Cement Substitution by Biomass Fly Ash on the Polymer–Cement Composites Properties

Materials ◽

10.3390/ma14113079 ◽

2021 ◽

Vol 14 (11) ◽

pp. 3079

Author(s):

Beata Jaworska ◽

Dominika Stańczak ◽

Joanna Tarańska ◽

Jerzy Jaworski

Keyword(s):

Fly Ash ◽

Building Materials ◽

Raw Materials ◽

Combustion Process ◽

Biomass Combustion ◽

Cement Composites ◽

Cement Mortars ◽

Mineral Additive ◽

Biomass Fly Ash

The generation of energy for the needs of the population is currently a problem. In consideration of that, the biomass combustion process has started to be implemented as a new source of energy. The dynamic increase in the use of biomass for energy generation also resulted in the formation of waste in the form of fly ash. This paper presents an efficient way to manage this troublesome material in the polymer–cement composites (PCC), which have investigated to a lesser extent. The research outlined in this article consists of the characterization of biomass fly ash (BFA) as well as PCC containing this waste. The characteristics of PCC with BFA after 3, 7, 14, and 28 days of curing were analyzed. Our main findings are that biomass fly ash is suitable as a mineral additive in polymer–cement composites. The most interesting result is that the addition of biomass fly ash did not affect the rheological properties of the polymer–cement mortars, but it especially influenced its compressive strength. Most importantly, our findings can help prevent this byproduct from being placed in landfills, prevent the mining of new raw materials, and promote the manufacture of durable building materials.

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