Bamboo as a Unique Ecological Building Material of the XXI Century: Bamboo Description, Bamboo Physical and Mechanical Properties Studies

2021 ◽  
Vol 1043 ◽  
pp. 149-154
Author(s):  
Sergey Skuratov ◽  
Galina Danilova-Volkovskaya ◽  
Edvard Yanukyan ◽  
Mikhail Beilin
Keyword(s):  
Mechanical Properties ◽  
Building Material ◽  
Physical And Mechanical Properties ◽  
Material Structure ◽  
Iso Standards ◽  
Normative Documents ◽  
Advantages And Disadvantages ◽  
Operating Instructions ◽  
Ecological Building ◽  
Application Scope

The description of bamboo varieties is given, the material structure and the application scope are considered. The characteristics of the advantages and disadvantages of bamboo as a structural building material are given. The results of determining the mechanical properties of bamboo are investigated. The normative documents (ISO standards) regulating the use of bamboo in construction are presented. There has been a lag in the operating instructions production for bamboo use in construction. The researchers who studied the bamboo properties and nodal junctures of bamboo rods, as well as the architects and designers of original bamboo structures are indicated.

scholarly journals Physical and Mechanical Properties of Cemented Ash-Based Lightweight Building Materials with and without Pumice

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Neslihan Doğan-Sağlamtimur ◽  
Adnan Güven ◽  
Ahmet Bilgil
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Building Material ◽  
Building Materials ◽  
Physical And Mechanical Properties ◽  
Mixing Ratio ◽  
Lightweight Material ◽  
Important Input ◽  
Axial Compressive Strength ◽  
International Companies

Pumice, cements (CEM I- and CEM II-type), waste fly and bottom ashes (IFA, GBA, and BBA) supplied from international companies were used to produce lightweight building materials, and physical-mechanical properties of these materials were determined. Axial compressive strength (ACS) values were found above the standards of 4 and 8 MPa (Bims Concrete (BC) 40 and 80 kgf/cm2 class) for cemented (CEM I) pumice-based samples. On the contrary, the ACS values of the pumice-based cemented (CEM II) samples could not be reached to these standards. Best ACS results (compatible with BC80) from these cemented lightweight material samples produced with the ashes were found in 50% mixing ratio as 10.6, 13.2, and 20.5 MPa for BBA + CEM I, GBA + CEM II, and IFA + CEM I, respectively, and produced with pumice were found as 8.4 MPa (same value) for GBA + pumice + CEM II (in 25% mixing ratio), BBA + pumice + CEM I (in 100% mixing ratio), and pumice + IFA + CEM I (in 100% mixing ratio), respectively. According to the results, cemented ash-based lightweight building material produced with and without pumice could widely be used for constructive purposes. As a result of this study, an important input to the ecosystem has been provided using waste ashes, whose storage constitutes a problem.

Development of Fly Ash-Based Geopolymer Lightweight Bricks Using Foaming Agent - A Review

2015 ◽  
Vol 660 ◽  
pp. 9-16 ◽  
Author(s):  
Wan Mastura Wan Ibrahim ◽  
Kamarudin Hussin ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Aeslina Abdul Kadir ◽  
Mohammed Binhussain
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Building Material ◽  
Raw Materials ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Foaming Agent ◽  
Positive Effects ◽  
The World ◽  
Great Development

Bricks are widely used as a construction and building material due to its properties. Recent years have seen a great development in new types of inorganic cementitious binders called ‘‘geopolymeric cement’’ around the world. This prompted its use in bricks, which improves the greenness of ordinary bricks. The development of fly ash-based geopolymer lightweight bricks is relatively new in the field of construction materials. This paper reviews the uses of fly ash as a raw materials and addition of foaming agent to the geopolymeric mixture to produce lightweight bricks. The effects on their physical and mechanical properties have been discussed. Most manufactured bricks with incorporation of foaming agent have shown positive effects by producing lightweight bricks, increased porosity and improved the thermal conductivities of fly ash-based geopolymer bricks. However, less of performances in number of cases in terms of mechanical properties were also demonstrated.

The Improvement of the Physical and Mechanical Properties of Steel Deposits Obtained by Thermal Spraying in Electric Arc

2013 ◽  
Vol 814 ◽  
pp. 173-179 ◽  
Author(s):  
Stefan Lucian Toma ◽  
Costică Bejinariu ◽  
Diana Antonia Gheorghiu ◽  
Constantin Baciu
Keyword(s):  
Mechanical Properties ◽  
Thermal Field ◽  
Thermal Spraying ◽  
Physical And Mechanical Properties ◽  
Electric Arc ◽  
New Device ◽  
Advantages And Disadvantages ◽  
Physical Chemical ◽  
Adherence Assessment ◽  
Spraying Process

Steel depositsobtained by thermal spray arc have physical-chemical and mechanical properties dependent on operational parameters of the spraying process. Thus, the electric current intensity, the spray distance, the velocity, respectively the driving gas pressure are the parameters that influence the mechanical properties of the steel deposits obtained by thermal spraying. The interaction between particles- gas drive seen in the classic arc spray has the effect the lowering of particles temperature and implicitly of the physical and mechanical properties of the deposit. Using a new device, combined, in which over the thermal field, created by the electric arc, would overlap a second thermal field, created by a gaseous fuel burning, would determine the maintaining of high temperature of the particles and implicitly changes of the physical, chemical and mechanical properties of the deposit. Such a combined spraying device would be called device for spraying in electric arc-thermally activated. The paper aims to present a comparative study of the physic chemical and mechanical properties of steel deposits obtained with two spraying processes: the classical process and the combined spraying process - in electric arc thermally activated.Investigations carried out on the structure of deposits by electron microscopy SEM, XRD analysis and image analysis performed at zone level Layer-Substrate as well the deposits adherence assessment in accordance with EN 582-allows the highlighting properties, the arguing of differences between the properties of the deposits made by the two methods as well as the establishing advantages and disadvantages using those processes.

scholarly journals POLYMER CONCRETE MIXTURES – APPLICATION IN ENGINEERING INDUSTRY

STED JOURNAL ◽  
2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Robert Poklemba ◽  
Jozef Zajac ◽  
Darina Duplakova ◽  
Peter Cizmar ◽  
David Goldyniak
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Composite Materials ◽  
Material Properties ◽  
Physical And Mechanical Properties ◽  
Strength Properties ◽  
Engineering Industry ◽  
Polymer Concrete ◽  
Advantages And Disadvantages ◽  
Concrete Mixtures

This article discusses the properties of concrete composite materials based on their contexture. Systematic and interactive approaches are required in order to achieve optimal material properties in the preparation of composite materials. In order to predict the physical and mechanical properties of each component of the composite material but also as a whole, its optimization, not only the mechanical but also the material properties under different working conditions, requires a combination of different methods and technologies. The advantage of each composite is its specific properties that cannot be achieved by any component of the composite material alone. The strength of the materials based on polymer concrete mixtures can be compared to the strength properties of metals. On the other hand, this material has elastic properties which give the material a high degree of flexibility. When compared to conventional materials, the value of polymer composites is assessed not only in terms of excellent mechanical properties but also in terms of their low weight and cost. The aim of the paper is to describe the advantages and disadvantages of composites based on polymer concrete mixtures.

scholarly journals РОЗРОБЛЕННЯ МОДИФІКОВАНОГО НАМЕТУ УСБ-56

2019 ◽  
Vol 134 (3) ◽  
pp. 73-78
Author(s):  
З. С. Сірко ◽  
Б. Й. Запталов ◽  
Є. А. Стариш ◽  
Д. П. Торчилевський ◽  
І. І. Котлярова
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Production Method ◽  
Water Repellent ◽  
Normative Documents ◽  
Linear Dimensions ◽  
The Cost ◽  
Selection Of

The  purpose  of  the  tent  modification  type  USB-56  is  improvements  its  exploitative characteristics and reduction the cost of its production. Method. During the study of the physical and mechanical properties of the fabric, techniques were used to determine linear dimensions, linear and surface densities, to determine the breaking characteristics during stretching of the fabric, to determine the hygroscopic and water repellent properties of the tissue. All of  the  previously  used  methods  are  from  the  normative  and  technical  documentations.  The  selection  of samples of tissue was carried out in accordance with the requirements of normative documents.

scholarly journals SIFAT FISIK DAN MEKANIK KOMPOSIT KAYU SEMEN-SERBUK GERGAJI

PERENNIAL ◽  
2006 ◽  
Vol 2 (1) ◽  
pp. 38 ◽  
Author(s):  
. Bakri ◽  
Endra Gunawan ◽  
Djamal Sanusi
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Water Absorption ◽  
Key Words ◽  
Water Content ◽  
Physical And Mechanical Properties ◽  
Wood Composite ◽  
Thickness Swelling ◽  
Iso Standards ◽  
Saw Dust

This research aims to find out the effect of cement-saw dust ratio levels on the physical and mechanical properties of produced composites. The physical properties (density, water content, water absorption after the immersion of one hour and 24 hours, and thickness swelling after the immersion of one hour and 24 hours) and mechanical properties (MOE and MOR) were observed according to ISO standards. The results showed that the use of the cement to sawdust ratio of 3 : 1 in producing wood composite with the target density of 1200 kg/m3 resulted in the lowest water absorption and the highest MOE and MOR. The swelling value and MOR of the produced boards were not acceptable, but their water content, water absorption, and MOE parameters were acceptable according to ISO 8335 1997. Key Words : Physical and mechanical properties, cement wood composite, sawdust

scholarly journals Substantination of carbon fiber as an innovative materials for fistening of mining workings of coal mines

2021 ◽  
Vol 64 ◽  
pp. 112-121
Author(s):  
I Sheka ◽  
Ye Tsivka
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Comparative Analysis ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Coal Mines ◽  
Physical And Mechanical Properties ◽  
Metallic Materials ◽  
Advantages And Disadvantages ◽  
Mine Workings

Purpose. To analyze composite materials and prospects of their use as fastening materials for mining of coal mines.Perform a comparative analysis of the physical and mechanical properties of the innovative material carbon fiber and metallic materials, as well as compare their features. To determine the possibility of using carbon fiber as a fastening material for mining of coal mines. Research methodology. The generalization of physical and mechanical properties of carbon fiber on the basis of its analysis is performed. The features of mechanical properties of carbon fiber, steel and aluminum are compared, which showed that this composite material has the best physical and mechanical properties and it is expedient to use it in the fastening elements of mine workings. Research results. The areas of use of composite materials in industry are analyzed and generalized, and it is concluded that it is better to use carbon fiber as a fastening material for coal mine workings. A comparative analysis of the physical and mechanical properties of carbon fiber and steel is performed, which shows that this composite material has identical (and sometimes even better) properties as metallic materials. The advantages and disadvantages of carbon fiber as a fastening material for mining of coal mines are estimated. It is specified that the restraining factor, today, is the cost of carbon fiber, and later their price will decrease and demand will increase. It is concluded that when using this composite material in the fasteners of mine workings, it is possible to increase the pace of their implementation, reduce the complexity of the work performed and improve working conditions while facilitating the design. Scientific novelty. It is established that carbon fiber as a composite material can be used in the fastening elements of the preparatory workings of coal mines. Practical value. According to the results of the analysis, it is established that carbon plastics can be used in the fastening elements of mine workings, which will promote the development of underground coal mining.

scholarly journals Microstructure, physical and mechanical properties of kaolin–diatomite composite reinforced with CaCO3•

DYNA ◽  
2019 ◽  
Vol 86 (210) ◽  
pp. 323-332
Author(s):  
KAROL LIZETH ROA BOHÓRQUEZ ◽  
ENRIQUE VERA LÓPEZ ◽  
LUIS ALEJANDRO FONSECA PÁEZ ◽  
GABRIEL PEÑA RODRÍGUEZ
Keyword(s):  
Mechanical Properties ◽  
Average Pore Size ◽  
Slip Casting ◽  
Physical And Mechanical Properties ◽  
Ceramic Technology ◽  
Bending Test ◽  
Material Structure ◽  
Mechanical Resistance ◽  
Immersion Method ◽  
Linear Contraction

The present work reports the microstructure, physical and mechanical properties of a material composed of kaolin, diatomite and calcium carbonate reinforcement (CaCO3). The ceramic prototypes were shaped by the slip casting method and sintered at temperatures between 800 °C and 1100 °C. The morphology and average pore size was analyzed by Scanning Electron Microscopy (SEM) and the mineralogical phases were determined by X-Ray Diffraction (XRD). The apparent density was established by the mercury immersion method according to the E – 8B Standard of the Institute of Ceramic Technology (ITC); the percentage of absorption was determined by the boiling method according to ISO 10545-3 standard; linear contraction was studied in three directions: long, wide and high. The study of the mechanical resistance to compression followed the procedure established at ASTM C773–88 standard and the breaking modulus was calculated by the three-point bending test, according to ISO 10545–4. Results show that the material structure is affected with increasing temperature reporting a decrease in quartz phase from 51.16 % to 33.81 %. Percentage of absorption revealed its most significant variation between 950 °C and 1100 °C with a decrease of 21 % approximately. Mechanical resistance values showed wide dispersion which was attributed to the different orientations in which the material failed during each test. According to the pore diameters found, the compound is characterized by being macro and mesoporous facilitating its application in catalysis, photochemistry, microelectronics and other microfiltration media

scholarly journals The thermal conditions' arrangement when covering facility using in the constructional industry

2018 ◽  
pp. 14-16
Author(s):  
S. Ya. Davydov ◽  
A. M. Semin
Keyword(s):  
Mechanical Properties ◽  
Film Thickness ◽  
Building Material ◽  
Physical And Mechanical Properties ◽  
Thermal Conditions ◽  
Polyethylene Film ◽  
Electrical Characteristics

The drive vertically moving covering mechanism is presented in the article which can be used when manufacturing the ceramic products and the steam chambers for the concrete curing intensification and when restoration of the raw clay building material mining lands. The structural and services' features of the drive covering mechanism are described. The estimated dependencies for the polyethylene film thickness, for its strength and elongation on failure are shown, as well as the film's physical and mechanical properties and the electrical characteristics are given.

Biological Durability of Cross-Laminated Timber— The State of Things

2021 ◽  
Vol 71 (2) ◽  
pp. 124-132
Author(s):  
Kenneth E. Udele ◽  
Jeffrey J. Morrell ◽  
Arijit Sinha
Keyword(s):  
Mechanical Properties ◽  
North America ◽  
Service Life ◽  
Building Material ◽  
Physical And Mechanical Properties ◽  
Biological Origin ◽  
Cross Laminated Timber ◽  
Mass Timber ◽  
Biological Durability ◽  
Timber Product

Abstract Cross laminated timber (CLT) is a mass timber product that is gaining popularity in construction within North America. CLT is made up of wood, a building material of biological origin. Therefore, these materials are at a risk of decay upon intrusion of moisture, a situation that could lead to loss of confidence in the material. Ensuring durability and optimum performance of building elements throughout their expected service life will require an understanding of the potential for decay and the possible consequences. This paper reviews the various possibilities of moisture intrusion in CLT, their potential effects on the physical and mechanical properties of CLT, and ultimately the associated biological decay risks. The paper concludes by enumerating variables that are critical and should be evaluated to completely understand decay in CLT panels, stemming from a thorough review of previous studies and methods used to evaluate decay in mass timber.

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