scholarly journals Liquefaction analysis of abrasion protection structure in Padang

2018 ◽  
Vol 229 ◽  
pp. 01018
Author(s):  
Abdul Hakam ◽  
Bayu M Adji ◽  
Junaidi ◽  
Risayanti

The liquefaction potential of a soil deposit is an important aspect to consider the stability of structure due to the earthquake. The liquefaction may also contribute to the safety of coastal constructions. The assessment of liquefaction potential can be started by having the physical properties of sandy soil that include grain size and density. Those parameters had known to give effects to the liquefaction resistance. Those physical properties of sand soil associated with liquefaction resistance must be tested in the laboratory. A case study of a real construction design in Padang, Indonesia is discussed here. The liquefaction potential was assessed using the Density-Grain size methods. The suggested solution to treat those problems is then provided. The compaction treatment to reach a certain relative density before the construction on site may avoid the liquefaction potential and save the coastal structure.

2012 ◽  
Vol 488-489 ◽  
pp. 1071-1075
Author(s):  
Xuan Zhang ◽  
Liang De He ◽  
Ning Zhuang

Comparing with the stability demands of construction material used in pipe-bag riding technology for sea embankments, and based on many site and laboratory tests of sand distributed in Dongtai offshore, Northern Jiangsu Province in China for reclamation engineering, the type of sand, mechanical composition, grain shape, coefficient of permeability and liquefaction potential of sands were discussed. Additionally, the sea embankment slope stability analysis and seepage stability analysis demonstrate the sands can be used in sea embankment construction for pipe bag method


2019 ◽  
Vol 164 ◽  
pp. 12-24 ◽  
Author(s):  
Xing Liu ◽  
Saidong Xue ◽  
Feifei Wang ◽  
Jiwei Zhai ◽  
Bo Shen

Author(s):  
Mukhtar Ahmed

<span>Harper-Dorn creep Mechanism is studied for Al, Mo, MgO and CaO. The normalized grain size<span> for each material is compared by using Langdon-Mohamed Type deformation mechanism maps<span> [7]. Al is an F.C.C. metal, Mo is a B.C.C. metal, whereas CaO and MgO are non-metallic oxides,<span> they all have different physical properties and hence this case study has a wide range of<span> spectrum<br /><br class="Apple-interchange-newline" /></span></span></span></span></span>


2013 ◽  
Vol 62 (1) ◽  
pp. 67-84
Author(s):  
Anna Trembecka

Abstract Amendment to the Act on special rules of preparation and implementation of investment in public roads resulted in an accelerated mode of acquisition of land for the development of roads. The decision to authorize the execution of road investment issued on its basis has several effects, i.e. determines the location of a road, approves surveying division, approves construction design and also results in acquisition of a real property by virtue of law by the State Treasury or local government unit, among others. The conducted study revealed that over 3 years, in this mode, the city of Krakow has acquired 31 hectares of land intended for the implementation of road investments. Compensation is determined in separate proceedings based on an appraisal study estimating property value, often at a distant time after the loss of land by the owner. One reason for the lengthy compensation proceedings is challenging the proposed amount of compensation, unregulated legal status of the property as well as imprecise legislation. It is important to properly develop geodetic and legal documentation which accompanies the application for issuance of the decision and is also used in compensation proceedings.


Alloy Digest ◽  
2003 ◽  
Vol 52 (8) ◽  

Abstract Haynes 625SQ alloy is a modification of Haynes 625 alloy (see Alloy Digest Ni-354, January 1988) with tighter controls on chemistry and a finer grain size for fatigue resistance up to 680 deg C (1250 deg F). This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance as well as heat treating. Filing Code: Ni-612. Producer or source: Haynes International Inc.


Alloy Digest ◽  
1975 ◽  
Vol 24 (1) ◽  

Abstract BLACK DIAMOND STANDARD is an electric-furnace-melted, water-hardening carbon tool steel with an excellent reputation for use as the standard in general shop tools requiring extreme toughness and resistance to shock and impact. In the lower carbon ranges (0.50-0.70% carbon), it is used primarily for tools such as pins, punches, hammers and sledges. Black Diamond may be expected to give uniform and consistent results, although no definite limits of case depth or grain size are regularly guaranteed. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-281. Producer or source: Crucible Specialty Metals Division, Colt Industries.


Author(s):  
A.C.C. Coolen ◽  
A. Annibale ◽  
E.S. Roberts

This chapter reviews graph generation techniques in the context of applications. The first case study is power grids, where proposed strategies to prevent blackouts have been tested on tailored random graphs. The second case study is in social networks. Applications of random graphs to social networks are extremely wide ranging – the particular aspect looked at here is modelling the spread of disease on a social network – and how a particular construction based on projecting from a bipartite graph successfully captures some of the clustering observed in real social networks. The third case study is on null models of food webs, discussing the specific constraints relevant to this application, and the topological features which may contribute to the stability of an ecosystem. The final case study is taken from molecular biology, discussing the importance of unbiased graph sampling when considering if motifs are over-represented in a protein–protein interaction network.


Author(s):  
Hyojin Kim ◽  
Daesik Hur ◽  
Tobias Schoenherr

Supplier development has been a critical supply management practice since the 1990s. In many instances, it has even become imperative for buyer firms to support and prepare their supply bases for uncertain economic and market environments, socially and environmentally conscious customers, advances in digital technologies, and increasing competition. Yet, research that approaches supplier development with the objective to advance all these dimensions in an integrated fashion is scarce. This study fills this void by exploring how a buyer firm may address these emerging challenges in its supply base. Specifically, an in-depth case study of LG Electronics explores how the firm designs and operates multidimensional supplier development activities to foster the stability and sustainability of its supply base while enhancing its core suppliers’ competitive capabilities. This chapter illustrates how supplier development can be taken to the next level, presents implications for managerial practice, and outlines promising future research avenues.


2021 ◽  
pp. 154134462199624
Author(s):  
Felix Okechukwu Dike ◽  
JohnBosco Chika Chukwuorji

The theory of transformative learning (TL) has been criticized secondhand for its lack of clarity in capturing and explaining in detail the processes undergone by learners who are going through TL experiences and their link to learning outcomes. Using a case study design, and carefully synthesized TL processes (TLPs) from Mezirow’s TL theory, we present—moment by moment—the TLPs linked to outcomes identified among a group of teachers who participated in a values-based workshop. Participants were followed through interviews for over 72 weeks to trace the stability of their TL outcome. TL processes identified were compared to Mezirow’s 10 processes. The article discusses ontological transformations gained and offers fresh perspective to identifying TLPs that can be linked to outcomes.


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