scholarly journals Experimental and Numerical Analysis Study on Loess-Lime Structures Used for Lateral Antiseepage in Deep Collapsible Ground Embankment

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Zhengrui Zhang ◽  
Siti Jahara Matlan ◽  
Lili Zhang ◽  
Hao Wang
Keyword(s):  
Numerical Analysis ◽  
Moisture Content ◽  
Simulation Analysis ◽  
Loess Soil ◽  
Automated Testing ◽  
Lime Treatment ◽  
Treatment Results ◽  
Analysis Study ◽  
Wall Structures ◽  
Different Types

The focus of this study was to investigate the effect of loess soil treated with lime on the lateral-seepage response. Three groups of box experiments were carried out to study the lateral-seepage effect under different types of loess-lime structures. Automated testing systems were designed to perform experiments and collect data. Additionally, numerical analysis of lateral-seepage impact and embankment settlement was performed. Finally, moisture content and settlement were monitored to quantify lateral-seepage effect results under corresponding loess-lime treatment. Results showed that loess-lime compaction piles and diaphragm wall structures could effectively prevent lateral seepage, and the latter was better. The simulated results are similar to the measured values of the box experiment, which indicates the accuracy of the simulation analysis and further supports the experimental results of this study.

scholarly journals Geoelectric method applied in correlation between physical characteristics and electrical properties of the soil

2017 ◽  
Vol 2 (2) ◽  
pp. 37 ◽  
Author(s):  
Antonio Marcelino Silva Filho ◽  
Carlos Leandro Borges Silva ◽  
Marco Antonio Assfalk Oliveira ◽  
Thyago Gumeratto Pires ◽  
Aylton José Alves ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Soil Moisture ◽  
Electrical Properties ◽  
Moisture Content ◽  
Soil Compaction ◽  
Clay Content ◽  
Physical Characteristics ◽  
Soil Dynamics ◽  
Different Types ◽  
The Relationship

This paper presents the study of the relationship between electrical properties and physical characteristics of the soil. Measures of apparent electrical resistivity of the soil were made for different types of soil, varying moisture content gradually while maintaining a constant compaction, and then varying the compaction and relating it to a constant humidity. Development of a correlation surface is proposed in order to identify granulometry of the soil from moisture and compaction measurements. For the study of spatial variability, two areas were chosen to allow the change of moisture content and compaction in order to verify the measurement capacity of apparent electrical resistivity of the soil as methodology to identify change in soil dynamics. Results obtained show correlations among apparent electrical resistivity of the soil, moisture, soil compaction and clay content.

scholarly journals Deconstructing the evidence: The effects of strength and reliability of evidence on suspect behavior and counter-interrogation tactics

2019 ◽  
Author(s):  
Laure Brimbal ◽  
Timothy John Luke
Keyword(s):  
Qualitative Analysis ◽  
Analysis Study ◽  
Investigative Interview ◽  
Empirically Supported ◽  
Reliable Evidence ◽  
Different Types ◽  
Evidence Type

ObjectivesStrategic questioning and disclosure of evidence are increasingly recommended as empirically-supported techniques in interviews. To date, no research has evaluated how different types of evidence (e.g., eyewitness, fingerprints) might affect interview outcome. HypothesesWe hypothesized that suspects would be more willing to make statements that contradict pieces of evidence that are perceived to be weaker and less reliable.MethodsIn Study 1, we conducted systematic and meta-analytic reviews of the literature to retrospectively assess these factors. In six experiments, we began to fill this gap by manipulating strength and reliability of evidence (Study 2, 3c, and 4a), assessing the validity of our operationalizations (Study 3a-b) and testing generalizability across operationalizations (Study 3c), and examining participants’ rationale for their responses to a qualitative analysis (Study 4b). ResultsStudy 1 found that evidence type and, hence, reliability had not been taken into account in previous research. Further, we were unable to establish if observed effects of interview tactics were moderated by the properties of the evidence used. In Study 2, we found that participants were more consistent with evidence when it was more reliable, especially when it was highly incriminating. After validating our operationalizations in studies 3a and 3b, we replicated the pattern found in Study 2 (3c and 4a), whereby those in the highly reliable condition were most consistent with the evidence, followed by those with less reliable evidence and no evidence.ConclusionsWe demonstrated that evidence properties should be considered when studying how to disclose information in an investigative interview.

scholarly journals Comparison of Parallel Dowel-Bearing Strength of Mengkulang, Kempas and Pine Glulam between ASTM D 5764-97a and BS EN 383: 2007

2018 ◽  
Vol 7 (3.11) ◽  
pp. 206
Author(s):  
Nor Jihan A. Malek ◽  
Rohana Hassan ◽  
Azmi Ibrahim ◽  
Hussein M. H. Almanea ◽  
Tee H. Hean
Keyword(s):  
Moisture Content ◽  
Strength Test ◽  
Wood Moisture Content ◽  
Timber Species ◽  
Wood Moisture ◽  
Bearing Strength ◽  
Significant Parameter ◽  
Different Types ◽  
Wood Grain ◽  
Bolt Diameter

Dowel-bearing strength is a significant parameter for designing wood connection. The strength of timber connection can be influenced by the bolt diameter, wood grain direction either parallel or perpendicular, thickness of wood, moisture content and other parameters. The dowel-bearing strength test was conducted with a 12 mm bolt diameter dowel, for three different types of timber species, which were mengkulang (Heritiera sp.), kempas (Koompassia malaccensis) and pine (Pinus sp.) glulam. The dowel was placed parallel to the timber grain direction with a glue line at the center of the half-hole test. The 5% diameter offset load (F5%) for dowel-bearing strength (Fy) was determined by using the ASTM D 5764-97a whereas the dowel-bearing strength (Fh) was determined based on BS EN 383: 2007. The results of the three different types of wood showed that the Malaysian timber kempas and mengkulang were 51.740% and 32.966%, respectively, which were higher than the European timber pine. The results of the dowel-bearing strengths (Fh), which were based on the BS EN 383: 2007 gave higher values compared to ASTM D 5764-97a.  

scholarly journals Green envelope as an architectural strategy for energy efficiency in a library building

2019 ◽  
Vol 266 ◽  
pp. 01004 ◽  
Author(s):  
Azlan Ariff Ali Ariff ◽  
Sabarinah Sheikh Ahmad ◽  
Mohd Aljefri Hussin
Keyword(s):  
Energy Consumption ◽  
Indoor Environment ◽  
Building Simulation ◽  
Treatment Results ◽  
Building Information Modelling ◽  
Design Alternatives ◽  
Different Types ◽  
Building Information ◽  
Reduction Of Energy Consumption ◽  
Envelope Functions

In the context of Malaysian tropical climate, green envelope functions to provide satisfying indoor environment and achieve the best performance with minimal energy consumption. Buildings that rely on air-conditioning to improve thermal comfort could benefit from green envelope potentials. Hence, the objective of this paper is to explore the impacts of various types of green envelope towards reducing the energy consumption of a two-storey library building. The methodology approach is quantitative and data are collected through building simulation using Revit Building Information Modelling (BIM). Parameters studied are building orientation, wall insulation, envelope materials, and façade treatment. Results showed that different types of green envelope posed different impact on energy consumption of the library and double glazed windows contribute the most significant reduction of energy consumption. The study establishes the contribution of green envelope and advocates the use of building simulation as research methodology, as it helps to improve envelope design, and to predict the possible outcomes of design alternatives.

scholarly journals The Utilization of Recycled Masonry Aggregate and Recycled EPS for Concrete Blocks for Mortarless Masonry

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1923 ◽  
Author(s):  
Tereza Pavlu ◽  
Kristina Fortova ◽  
Jakub Divis ◽  
Petr Hajek
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Masonry Wall ◽  
Expanded Polystyrene ◽  
Mechanical And Thermal Properties ◽  
Concrete Mixtures ◽  
Wall Structures ◽  
Different Types ◽  
Concrete Blocks ◽  
Recycled Masonry

The main aim of this paper is to carry out the environmentally based enhancement of a concrete mixture containing recycled materials whilst considering natural resource consumption as well as mechanical and thermal property levels. The developed concrete is intended to be used in mortarless masonry wall structures. Ten concrete mixtures with different types and replacement rates of recycled masonry aggregate and recycled expanded polystyrene were prepared, and their mechanical and thermal properties were experimentally investigated. It was found that the use of recycled masonry aggregate led to better thermal properties while maintaining sufficient mechanical properties. On the contrary, the addition of recycled expanded polystyrene did not significantly affect the thermal properties of concrete, but the mechanical properties considerably declined. For this reason, the recycled masonry aggregate is suitable to use as an aggregate for concrete masonry blocks for wall structures.

Mechanism of the Frame-Supported Masonry Shear-Wall Structure with Inter-Story Isolation

2013 ◽  
Vol 351-352 ◽  
pp. 765-770
Author(s):  
Lei Lu ◽  
Ying Zhou
Keyword(s):  
Numerical Analysis ◽  
Shear Wall ◽  
Mixed System ◽  
Wall Structure ◽  
Stiffness Ratio ◽  
Mass Ratio ◽  
Isolation System ◽  
Wall Structures ◽  
Theoretical And Numerical Analysis ◽  
Masonry Shear Wall

Many frame-supported masonry shear-wall structures were observed severely damage in Wenchuan Earthquake. In this paper, an inter-story isolation system is implemented in such structures to mitigate the hazard of the earthquake. The mechanism of the mixed system is demonstrated by theoretical and numerical analysis. And it is concluded that the mass ratio, the below-stiffness ratio, the yield shear of isolated layer and the up-stiffness ratio are the main parameters whose effects are discussed separately. For the design convenience, a set of fitting equations of these parameters are provided.

Design and Numerical Analysis of Non-Uniform Electromagnetic Field Based on the Wedge Magnetic Pole

2013 ◽  
Vol 579-580 ◽  
pp. 706-710
Author(s):  
Peng Huang ◽  
Chun Fu Gao ◽  
Xin Sheng He ◽  
Hai Feng Ji
Keyword(s):  
Magnetic Field ◽  
Numerical Analysis ◽  
Uniform Magnetic Field ◽  
Simulation Analysis ◽  
Design Method ◽  
Machining Errors ◽  
Element Simulation ◽  
Eddy Loss ◽  
Magnetic Induction Intensity ◽  
Uniform Electromagnetic Field

As there are relatively fewer studies about non-uniform magnetic field design and numerical analysis, a model of wedge pole electromagnet has designed and analyzed based on the traditional electromagnet design method. The effects of coil turn, conductor sectional and electric current density on magnetic field intensity had also designed and calculated. The design and numerical analysis of wedge pole electromagnet were conducted which adopted the finite element simulation and optimal design method. The magnetic induction intensity for the wedge pole electromagnet in different positions of the air gap had analog calculated. The simulated and test results for distributing magnetic field can be well corresponded by considering the effect of eddy loss, material and machining errors of electromagnetic. The result indicated that the method of simulation is correct and practical. The method provides a reliable simulation analysis and empirical data for the design of non-uniform magnetic field.

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