scholarly journals Analysis of the Fire Properties of Blown Insulation from Crushed Straw in the Buildings

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4336
Author(s):  
Jiří Teslík
Keyword(s):  
Construction Industry ◽  
Thermal Insulation ◽  
Large Scale ◽  
Fire Test ◽  
Agricultural Waste ◽  
Test Results ◽  
Current Generation ◽  
The Czech Republic ◽  
Scale Test ◽  
Fire Properties

Sustainable development in civil engineering is the clear and necessary goal of the current generation. There are many possibilities for reducing the use of depletable resources. One of them is to use renewable and recyclable materials on a larger scale in the construction industry. One possibility is the application of natural thermal insulators. A typical example is a crushed straw, which is generated as agricultural waste in the Czech Republic. Due to its small dimensions and good thermal insulation parameters, this material can also be used as blown thermal insulation. The research aims to examine the fire resistance of crushed straw as blown insulation. The single-flame source fire test results, thermal attack by a single burning item (SBI) test and large-scale test of a perimeter wall segment are shown. The results show that blown insulation made of crushed straw meets the requirements of fire protection. In addition, crushed straw can be also used to protect load-bearing structures due to its behaviour. This article also shows the production process of crushed straw used as blown insulation in brief.

Analytical Model for Rockfall Protection Galleries - a Blind Prediction of Test Results and Conclusion

2011 ◽  
Vol 82 ◽  
pp. 722-727 ◽  
Author(s):  
Kristian Schellenberg ◽  
Norimitsu Kishi ◽  
Hisashi Kon-No
Keyword(s):  
Degrees Of Freedom ◽  
Large Scale ◽  
Test Results ◽  
Blind Prediction ◽  
Proposed Model ◽  
Input Parameters ◽  
Scale Test ◽  
Definition Of ◽  
Protective Structures ◽  
Cushion Layer

A system of multiple degrees of freedom composed out of three masses and three springs has been presented in 2008 for analyzing rockfall impacts on protective structures covered by a cushion layer. The model has then been used for a blind prediction of a large-scale test carried out in Sapporo, Japan, in November 2009. The test results showed substantial deviations from the blind predictions, which led to a deeper evaluation of the model input parameters showing a significant influence of the modeling properties for the cushion layer on the overall results. The cushion properties include also assumptions for the loading geometry and the definition of the parameters can be challenging. This paper introduces the test setup and the selected parameters in the proposed model for the blind prediction. After comparison with the test results, adjustments in the input parameters in order to match the test results have been evaluated. Conclusions for the application of the model as well as for further model improvements are drawn.

Impact of Water on the Fatigue Performance of Large-Scale Grouted Connection Tests

2016 ◽  
Author(s):  
Peter Schaumann ◽  
Alexander Raba ◽  
Anne Bechtel
Keyword(s):  
Large Scale ◽  
Fatigue Tests ◽  
Fatigue Performance ◽  
Small Scale ◽  
Test Results ◽  
Ambient Conditions ◽  
Research Project ◽  
Joint Research Project ◽  
Scale Test ◽  
The Impact

Grouted connections represent a common joining technique between substructure and foundation piles of offshore oil & gas platforms as well as of offshore wind turbines. Due to cyclic loads arising from wind and wave actions the fatigue performance of the connection has to be considered. In lattice substructures like jackets the grouted connections are located at seabed level being fully submerged during their entire lifetime. Today’s fatigue design regulations are based on investigations neglecting any influence of the surrounding water since they were conducted in dry ambient conditions. So far, only Germanischer Lloyd gives additional recommendations for submerged grouted connections. At the Institute for Steel Construction, Leibniz Universität Hannover, Germany investigations of the joint research project ‘GROWup’ focus on the fatigue performance of axially loaded grouted connections. The project is funded by the Federal Ministry for Economic Affairs and Energy (BMWi, funding sign: 0325290) and is the third project in a row dealing with grouted connections. As part of this research project, cyclic loading tests on small-scale and large-scale grouted connections with shear keys are conducted. Small-scale fatigue tests showed a reduced number of endurable load cycles for connections when tested in wet ambient conditions. However, the transferability of these findings to a larger scale was still doubtful due to unknown scale effects. Therefore, the impact of water on the fatigue performance was tested recently at large-scale grouted connections. Previous to the submerged large-scale grouted connection fatigue tests, similar test specimens were exposed to alternating loads at dry ambient conditions. Comparison of both large-scale test results under wet and dry conditions enable to estimate the influence of water on the fatigue performance of grouted connections. Reflection of the small-scale test results gives hints on the scale effect. Test preparation, test results and design recommendations are presented in the paper.

scholarly journals From Bench-scale Test Data To Predictors Of Full-scale Fire Test Results

2005 ◽  
Vol 8 ◽  
pp. 469-480 ◽  
Author(s):  
S. Nam ◽  
J. De Ris ◽  
Peter Wu ◽  
R. Bill
Keyword(s):  
Test Data ◽  
Fire Test ◽  
Full Scale ◽  
Test Results ◽  
Bench Scale ◽  
Scale Test ◽  
Bench Scale Test

Cognitive Diagnostic Analyses of the Progress in International Reading Literacy Study (PIRLS) 2011 Results

2021 ◽  
Vol 42 (spécial) ◽  
pp. 127-165
Author(s):  
Dan Thanh Duong Thi ◽  
Nathalie Loye
Keyword(s):  
Large Scale ◽  
Diagnostic Information ◽  
Diagnostic Approach ◽  
Reading Literacy ◽  
Test Results ◽  
Scale Test ◽  
Using Data ◽  
To Receive ◽  
Diagnostic Modeling ◽  
Diagnostic Feedback

Despite the grand demand to receive diagnostic information about students’ difficulties in reading, there are very few tests specifically designed for diagnostic purposes. Therefore, many researches in cognitive diagnostic approach (CDA) use large-scale test results to provide fine and reliable diagnostic feedback on the strengths and weaknesses of students other than the total scores or percentiles ranks, which allow appropriate intervention. This study shows an example of the application of diagnostic modeling using data from 4,762 Canadian students who completed booklet 13 of the PIRLS test in 2011. The results highlight the potential for detailed diagnostic feedback of students’ strengths and weaknesses on the underlying skills identified in the test.

Gas and Water Permeation in Flexible Pipes

2002 ◽  
Author(s):  
Tore Roberg Andersen ◽  
Jan Ivar Skar
Keyword(s):  
Large Scale ◽  
Cold Water ◽  
Small Scale ◽  
Test Results ◽  
Test Program ◽  
Flexible Pipe ◽  
Water Permeation ◽  
Flexible Pipes ◽  
Scale Test ◽  
Temperature And Pressure

A test program has been performed to obtain the permeation coefficients for methane, carbon dioxide and water in PVDF. Small-scale tests showed that water is transported through the PVDF inner sheath of the flexible pipes, and into the annulus. A large-scale test was carried out to verify the small-scale test results. It was performed in a 2″ flexible pipe with length 3 m. The bore temperature and pressure were 100°C and 50 bar, respectively. The pipe was submerged in cold water in order to get a correct temperature gradient in the pipe. The test showed that the annulus of flexible pipe with PVDF inner sheath would become water wet due to permeation, depending upon the bore and annulus conditions.

scholarly journals Pengembangan Buku Ajar Perkoperasian Indonesia Dalam Perkuliahan Mahasiswa Prodi Pendidikan Ekonomi

2020 ◽  
Vol 4 (2) ◽  
pp. 243-252
Author(s):  
Putri Vina Sefaverdiana ◽  
Melisa Wahyu Fandyansari
Keyword(s):  
Research And Development ◽  
Student Learning ◽  
Large Scale ◽  
Small Scale ◽  
Development Research ◽  
Test Results ◽  
Scale Test ◽  
Improve Student Learning

Indonesian Cooperative textbooks are development research aimed at developing quality textbooks and can effectively improve understanding of existing cooperatives in Indonesia. Textbooks as a support in Cooperative lectures, in order to improve student learning in class so that students have understanding and skills in cooperating. The purpose of this textbook is to make it easier for students to learn and understand as a provision for students to develop cooperatives in their respective areas of residence. The method in this research is a research and development research using a model from Dick and Carrey. The test results obtained from the first material expert were 84.5%, the second material expert obtained 76.4%. 3%. After the expert test was carried out a small-scale test where the result was 82.6% and the large-scale test obtained a result of 86.3%. From the results of the percentage, it states that the textbook is in the good category and is feasible to apply

Results and analysis of a large-scale fire test on a multi-bay composite steel-frame floor system

2016 ◽  
Vol 7 (1) ◽  
pp. 19-29 ◽  
Author(s):  
David J. Proe
Keyword(s):  
Large Scale ◽  
Fire Test ◽  
Computer Modelling ◽  
Steel Frame ◽  
Steel Beams ◽  
Complex Structures ◽  
Test Results ◽  
Content Type ◽  
Modelling Techniques ◽  
Floor System

Purpose This paper aims to facilitate verification of computer modelling techniques for complex structures exposed to fire and to test the effect of some steel beams being left unprotected. Design/methodology/approach This paper describes a fire test conducted on a large-scale structure representing four corner bays of a typical multi-storey steel-frame office building. Findings A new and unexpected mode of damage occurred. Originality/value The test results indicate that an alternate reinforcement detail should be used in combination with unprotected beams.

scholarly journals TAHAP PENGEMBANGAN BAHAN AJAR “CREATIVE FACTOR” BERBASIS PROYEK PADA MATERI KELIPATAN DAN FAKTOR BILANGAN DIKELAS IV SEKOLAH DASAR

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Ina Riana ◽  
Rida Fironika Kusumadewi ◽  
Nuhyal Ulia
Keyword(s):  
Large Scale ◽  
Average Score ◽  
Small Scale ◽  
Teaching Material ◽  
Development Research ◽  
Test Results ◽  
Student Responses ◽  
Research Procedure ◽  
Scale Test ◽  
Teacher Responses

Abstrak. This research is to develop and find out the feasibility of "Creative Factor" teaching material products on multiples and number factors. "Creative Factor" teaching material products multiples and number factors are developed based on the teacher's need for other reference sources in learning. This research uses the Research and Development (RnD) method. The development of "Creative Factor" teaching material products uses a development research procedure according to Sugiyono that contains 10 thrones. Based on this, the research results obtained include: (1) the validation results from 4 experts obtained an average score of 84 and a percentage of 90% with the criteria "Very Eligible". (2) the results of the small-scale test get teacher responses obtained by the percentage of 88% with the criteria "Very Practical". While the results of student responses obtained 97.2% percentage "Very Practical". (3) large-scale test results obtained by teacher responses obtained by the percentage of 90% with the criteria "Very Practical". While the results of student responses obtained 96% percentage "Very Practical". Based on these results, the development of "Creative Factor" teaching material products can be declared worthy to be used as a companion in the learning process.

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