Rock and Soil Rheology

1988 ◽  
Keyword(s):  
Rock And Soil ◽  
Soil Rheology

Frost Heaving Soil Road Use Synthetic Adhesive Reinforcement Method

2013 ◽  
Vol 740 ◽  
pp. 759-762
Author(s):  
Hao Zeng Bao
Keyword(s):  
Mechanical Properties ◽  
Industrial Waste ◽  
Construction Materials ◽  
Reference Value ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Experimental Methods ◽  
Frost Heaving ◽  
The World ◽  
Rock And Soil

In many areas, there are still a development road construction materials, traditionally, often use reinforced concrete, asphalt and other adhesive method to strengthen the low strength of rock and soil anti-freeze expansion coefficient; And now all countries in the world are studying how to use industrial production waste development of new composite materials. One of the most development potential, the production of industrial waste - slime. This paper USES the Russian kazan national construction university experimental methods, in the experiment to improve frost heaving soil physical and mechanical properties of the method for the synthesis of adhesive, based on the feasibility and applicability, environmental assessment of research and analysis, for the use of adhesive put forward a lot of reference value.

Anchoring in rock and soil, 2nd edn

1983 ◽  
Vol 20 (5) ◽  
pp. 247
Author(s):  
I.W.F.
Keyword(s):  
Rock And Soil

Abrasivitätsuntersuchung von Boden und Fels im Kontext der neuen VOB/C/Assessment of rock and soil abrasivity relating to the new VOB/C standard

Bauingenieur ◽  
2016 ◽  
Vol 91 (05) ◽  
pp. 200-207
Author(s):  
Michael Alber ◽  
Ralf J. Plinninger
Keyword(s):  
Rock And Soil

Mit Erscheinen des Ergänzungsbands 2015 zur VOB 2012 ergeben sich für die Baugrunderkundung im Erd-, Grund-, Tief- und Spezialtiefbau umfassende Änderungen. Dies betrifft nicht nur das Konzept der geotechnischen „Homogenbereiche“, sondern auch die hierfür zu ermittelnden Kennwerte. Im Bereich der Abrasivitätsuntersuchung von Boden und Fels werden mit Erscheinen des Ergänzungsbands in Deutschland erstmals „Standards“ gesetzt. Der für Fels referenzierte „CERCHAR-Versuch“ stellt dabei ein aussagekräftiges, reproduzierbares und wirtschaftliches Verfahren dar, mit dem national und international umfangreiche Erfahrungen vorliegen. Eine sinnvolle Weiterentwicklung der VOB/C könnte dennoch in der Einbeziehung mineralogisch-petrographischer Ansätze für die Untersuchung von Fels bestehen. Im Gegensatz dazu stellt der für Boden referenzierte „LCPC-Versuch“ ein Versuchsverfahren dar, das durch die Verwendung stark vereinfachter Modellkörper und stark vereinfachter Versuchsrahmenbedingungen mutmaßlich zahlreiche neue, versuchstechnische Probleme implizieren wird. Böden in Ton-, Schluff- und Sandfraktion können bei normgemäßer Anwendung des Verfahrens nicht untersucht werden. Ebenso werden durch Probenahme und Probenvorbereitung eine Vielzahl verschleißrelevanter Bodenparameter verändert. Diese Aspekte lassen es zumindest fraglich erscheinen, ob das Ziel einer auch bauvertraglich belastbaren Bewertung der Abrasivität von Böden mit dieser Versuchsvorgabe erreicht wurde. Auch im Bereich der Lockergesteine könnte daher eine sinnvolle Weiterentwicklung in der Berücksichtigung geologisch-geotechnischer Prognoseindices bestehen, die auf herkömmlichen, „intrinsischen“, bodenmechanischen Kennwerten beruhen.

Difference in Diet and Water Quality Influencing the Growth of the Newly Introduced Penaeus merguiensis Larva Culture

2021 ◽  
Vol 26 (3) ◽  
pp. 197-206
Author(s):  
Mostafa Imhmed Ighwerb ◽  
Johannes Hutabarat ◽  
Ervia Yudiati ◽  
Rudhi Pribadi
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Quality Parameters ◽  
Recycled Water ◽  
Marine Research ◽  
Live Feed ◽  
C 50 ◽  
Rock And Soil ◽  
Penaeus Merguiensis ◽  
Better Than

The water quality found on the surface is usually better than that accumulated at the seabed and more bottomless sea. When recycled, water usually brings many materials along the path, all the way to reaching its end. Water quality varies from place to place, season, and different types of rock and soil it passes through also influences the possessed quality. By employing Penaeus merguiensis larvae produced by the Marine Research Center Hatchery owned by Jepara's government, this study analyzes varying effects in three nominal salinities (28, 32, and 36 ppt) and types of diets (Diet A: 100% live feed; Diet B: 100% FRIPPAK; Diet C: a combination of Diet A and Diet C, 50 % each) and finds the optimum water quality parameters such as dissolved oxygen, pH, and temperature on the growth of the newly introduced Penaeus merguiensis larvae. The results show that two nominals of water salinities (28 and 32 ppt) with Diet A works well, supporting the growth from most Zoea to Postlarvae-1: Zoea-1 at 28 ppt with Diet A; Zoea-2 at 32 ppt with Diet A; Zoea-3 at 32 ppt with Diet A; Mysis-1 at 28 ppt with Diet A; Mysis-2 at 28 ppt with Diet C; Mysis-3 at 28 ppt with Diet A; Postlarva-1 at 28 ppt with Diet A. All shrimp prefers temperature ranging from 31-32.4 °C with dissolved oxygen of 4.9-5.74 ppm and pH 7.0-8.1. 

Gamma Radioactivity Levels of Rock and Soil and Their Corresponding External Exposures in Navy Quarry Site, Abeokuta, South-Western, Nigeria

2012 ◽  
Vol 5 (7) ◽  
pp. 506-513 ◽  
Author(s):  
A.S. Okedeyi ◽  
A.M. Gbadebo ◽  
T.A. Arowolo ◽  
P. Tchokosa
Keyword(s):  
External Exposures ◽  
Rock And Soil ◽  
Radioactivity Levels

Three-Dimensional Engineering Geology Data Warehouse Constructed by Power Designer

2013 ◽  
Vol 753-755 ◽  
pp. 3112-3115
Author(s):  
Jing Li Huang ◽  
Qing Wang ◽  
Qiu Ling Lang
Keyword(s):  
Data Base ◽  
Data Warehouse ◽  
Data Model ◽  
Engineering Geology ◽  
Three Dimensional ◽  
Soil Mass ◽  
Design Model ◽  
Underground Space ◽  
Geological Data ◽  
Rock And Soil

The Three-dimensional engineering geology data warehouse is constructed by Power Desinger16.1, with the theme as the rock and mass availability in urban underground space, and with the source data as the borehole data of engineering Investigation. Use the Model-driven Architecture method, reverse engineer the Access data base, extract existed data model, combine research theme to construct the Star data structure model. And check the SQL script in SQL Server2005, to ensure normal operation. 0 Forewords The traditional transaction-oriented designed engineering geology data base has the function to storage original data from work, to draw of geological section and to provide simple check and analysis, but without the decision support function in view of a subject. The purpose of construction a 3D engineering geological data warehouse is to build a decision support system in view of availability of rock and soil mass in urban underground space. Based on the data extraction, data integration, data cleaning and data transformation, the 3D engineering geological data warehouse could achieve the integrated management of massive geological data and to provide reliable data source for the rock and soil mass utilization system in urban underground space. The main feature of 3D engineering geological data base is subject-oriented, integrated, time-varying, relatively stable, and is magnanimous collection of engineering geological spatial data and attribute data. According to the design pattern of traditional data base, the construction of 3D engineering geological data warehouse can be divided into three stages: concept design model, logic design model and physical design model. But the 3D engineering geological data warehouse exist iterative in the construction process. Currently, there are many CASE tools to help developers quickly achieving the data base design, such as Rational Rose by Rational company, Erwin and Bpwin by CA company, Power Designer by Sybase company, Office Visio by Microsoft company, and Oracle Designer by Oracle company. The paper uses the Powerdesigner16.1 to achieve the logical data model (LDM) and physical data model (PDM).

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