scholarly journals Integrated approach to the man-made waste use in the building materials production

2021 ◽  
Vol 937 (4) ◽  
pp. 042051
Author(s):  
Olga Smirnova ◽  
Anna Krasova
Keyword(s):  
Organic Waste ◽  
Building Materials ◽  
Integrated Approach ◽  
Wastewater Sludge ◽  
Sludge Incineration ◽  
Binder Type ◽  
Aerated Concrete ◽  
Inorganic Waste ◽  
Granular Aggregate ◽  
Selection Of

Abstract The article deals with the issues of the man-made waste use effectively in the building materials production, particular in non-autoclaved aerated concrete and granular aggregate. The basic properties of organic waste of flax bonfires and inorganic waste - ash from incineration of sewage sludge are determined. The optimal ratio selection of aggregates in non-autoclave aerated concrete is made. It is established that the use of flax bonfires makes it possible to partially or completely replace quartz sand in raw mixtures composition for producing aerated concrete. The dependence of the porous structure process on the temperature of aerated concrete mixture during the swelling period is investigated. Depending on a binder type and a technology, two methods of granulating materials, based on crushed flax and ash from wastewater sludge incineration are proposed.

scholarly journals Sound Transmission Loss Analysis on Building Materials

2018 ◽  
Vol 15 (4) ◽  
pp. 6001-6011 ◽  
Author(s):  
Tan Wei Hong ◽  
C. F. Sin
Keyword(s):  
Building Materials ◽  
Transmission Loss ◽  
Sound Transmission ◽  
Expanded Polystyrene ◽  
Sound Insulation ◽  
Insulation Material ◽  
Sound Transmission Loss ◽  
Loss Analysis ◽  
Aerated Concrete ◽  
Selection Of

This study is mainly to determine the sound transmission loss (STL) performance of the four selected building materials using the impedance tube. The four building materials are; autoclaved aerated concrete (AAC), laminated glass, expanded polystyrene and rockwool. Transmission loss occurs when a sound goes through a partition or barrier. The specimens are prepared in two thicknesses, which are 10 mm and 20 mm. The STL of the specimen was determined and analysed. It is observed that the STL results for all the tested materials are having a similar trend, which is a thicker specimen gives higher STL. In general, all the materials deliver high STL at the frequency range of 3000 – 5500 Hz. In overall, the result shows that the expanded polystyrene scores the highest STL among the four building materials in this study. Six combinations of different material also were tested, and AAC & expanded polystyrene combination shows the highest STL value among the six combinations. The outcomes of this study can be referred by noise control engineer on the selection of the sound insulation material for the building noise insulation treatment.

scholarly journals Analysis of Porous Structure in Autoclaved Materials Modified by Glass Sand

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 408
Author(s):  
Anna Stepien
Keyword(s):  
Computed Tomography ◽  
Building Materials ◽  
Micro Ct ◽  
Structure Building ◽  
Acoustic Insulation ◽  
Ct Analysis ◽  
Glass Sand ◽  
Aerated Concrete ◽  
Wall Construction ◽  
Dominant Phase

This paper describes the use of glass sand in the production of autoclaved bricks. Traditional autoclaved materials consist of SiO2, CaO, and H2O. The purpose of the tests is to analyze the possibility of using glass sand in autoclaved materials and to determine their properties and durability. Depending on the structure, building materials can have porosities ranging from 0% (glass, metals) to over 90% (thermal insulation materials such as aerated concrete). Porosity of materials is directly related to the strength of materials and their density, and further to the thermal and acoustic insulation properties of products used especially for external wall construction, i.e., bricks, concrete, and aerated concrete. This type of silicate brick is formed at a temperature of 203 °C, therefore the dominant phase forming the microstructure is tobermorite, in contrast to the C-S-H phase, which dominates in concretes and which is characterized by a larger specific surface. The nature of pores, their number, appearance and arrangement in the material can be studied using computer techniques (SEM, XRD, computed tomography, porosimetry). Computed tomography (micro-CT analysis) showed that the number of voids in the material modified by glass sand is about 20% in relation to the weight of the product. The density of the product with glass sand was determined to be 2.2 kg/dm3.

Proposal of a Simplified Environmental Assessment Method Based on Major Building Materials for School Buildings in Korea

2014 ◽  
Vol 905 ◽  
pp. 353-356
Author(s):  
Seung Jun Roh ◽  
Sung Ho Tae
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Building Materials ◽  
Assessment Method ◽  
School Buildings ◽  
Detailed Assessment ◽  
Impact Assessment Method ◽  
Assessment Result ◽  
Selection Of

The purpose of this study is to propose a simplified environmental impact assessment method based on selection of major building materials for school buildings in Korea. To accomplish this, environmental impact of 2 school buildings constructed in Korea was assessed according to the procedure of life cycle assessment. In addition, major building materials of school buildings were selected from the perspective of 6 environmental impact categories based on the assessment result, and a method of simplified environmental impact assessment was suggested. On one hand, case analysis verified applicability of the simplified environmental impact assessment method proposed in this study by showing similar value within 10% compared to the assessment result from existing detailed assessment.

scholarly journals KONDISI EKONOMI MASYARAKAT SEKITAR TPA WISATA EDUKASI TALANGANGGUNG DI DESA TALANGANGUNG KECAMATAN KEPANJEN KABUPATEN MALANG

2019 ◽  
Vol 6 (1) ◽  
pp. 22
Author(s):  
Rofidah Tamami ◽  
Sulistia Ningrum Ayu ◽  
Nur Syamsiah ◽  
Lailatul Munadifah
Keyword(s):  
Organic Waste ◽  
Disposal Site ◽  
Waste Collection ◽  
Final Disposal ◽  
The People ◽  
Educational Tourism ◽  
Descriptive Approach ◽  
Inorganic Waste ◽  
Waste Bank ◽  
Consumptive Behavior

<p>Urban is identical to the high consumptive behavior of the people who will then leave a lot of garbage too. The uncontrolled volume of waste will certainly disrupt the survival of the people who live in that place. Waste itself can be divided into two categories, namely organic waste and inorganic waste, which means that there is still a possibility to be reprocessed. So that the garbage does not interfere with the survival of the community, a waste collection facility or a waste bank is made which will later be collected again at the Final Disposal Site. Research conducted using qualitative methods with a descriptive approach. This research was conducted with the aim to find out how much influence the existence of the Talangagung Kepanjen Final Disposal on the surrounding community's economy. From the results of the study, it was found that the Talangagung Landfill is in addition to being a landfill, as well as an educational tourism site. Besides Talangagung Landfill has economic potential that can help the economy of the surrounding residents.</p><p><strong><em>Keywords: economy; final disposal site; educational tourism</em></strong></p>

scholarly journals PERAN PEMERINTAH DAN KADER MASYARAKAT DALAM PEMBERDAYAAN MASYARAKAT UNTUK PENGOLAHAN SAMPAH

2014 ◽  
Vol 2 (2) ◽  
pp. 191 ◽  
Author(s):  
Mohammad Erdi Ferdiansyah ◽  
Arsiyah Arsiyah
Keyword(s):  
Medicinal Plants ◽  
Waste Management ◽  
Organic Waste ◽  
Ornamental Plants ◽  
Qualitative Approach ◽  
Processing Waste ◽  
Role Of Government ◽  
Inorganic Waste

The purpose of this study to describe and analyze the role of government and Sumringah Ngampelsari interests group on waste management basedempowerment in the Ngampelsari village. This study used qualitative approach. The results of this study indicated that the processing and utilization of organic waste is done by simple composting technology. In order to maximize the results of processing waste become compost, the community maintain ornamental plants and medicinal plants. While, inorganic waste to be processed into valuable goods. Waste management based on empowerment is provided by guidance about awareness to the citizens to cultivate their waste and used compost to plantornamental plants, traditional plants and provided of bins in their neighborhood.

An Integrated CRO and FLANN Based Classifier for a Non-Imputed and Inconsistent Dataset

2019 ◽  
Vol 28 (03) ◽  
pp. 1950013 ◽  
Author(s):  
Ch. Sanjeev Kumar Dash ◽  
Ajit Kumar Behera ◽  
Sarat Chandra Nayak ◽  
Satchidananda Dehuri ◽  
Sung-Bae Cho
Keyword(s):  
Missing Values ◽  
Probabilistic Approach ◽  
Integrated Approach ◽  
Bench Mark ◽  
Chemical Reaction Optimization ◽  
Functional Link ◽  
Missing Value ◽  
Promising Alternative ◽  
Reaction Optimization ◽  
Selection Of

This paper presents an integrated approach by considering chemical reaction optimization (CRO) and functional link artificial neural networks (FLANNs) for building a classifier from the dataset with missing value, inconsistent records, and noisy instances. Here, imputation is carried out based on the known value of two nearest neighbors to address dataset plagued with missing values. The probabilistic approach is used to remove the inconsistency from either of the datasets like original or imputed. The resulting dataset is then given as an input to boosted instance selection approach for selection of relevant instances to reduce the size of the dataset without loss of generality and compromising classification accuracy. Finally, the transformed dataset (i.e., from non-imputed and inconsistent dataset to imputed and consistent dataset) is used for developing a classifier based on CRO trained FLANN. The method is evaluated extensively through a few bench-mark datasets obtained from University of California, Irvine (UCI) repository. The experimental results confirm that our preprocessing tasks along with integrated approach can be a promising alternative tool for mitigating missing value, inconsistent records, and noisy instances.

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