Ollares in Fennia repertos delineans

Invocatio: D.D.

Några kännemärcken til nyttiga mineraliers eller jord- och bärgarters upfinnande

Invocatio: J.H.W.N.

Geologian ja sen lähitieteiden kirjat

Kokoelma koostuu noin 16 000 nimikkeestä (kevät 2009) geologian ja sen lähitieteiden (kuten geofysiikan, geokemian, mineralogian, petrologian, geologisten kongressijulkaisujen jne.) kirjoja, joita ei ole julkaistu monografiasarjoissa, eivät ole opinnäytteitä eivätkä GTK:n omia julkaisuja. Kokoelma käsittää UDK-luokat 061.3, 528, 548 – 56. Kirjojen laina-aika on 28 vrk. Kokoelma karttuu pääosin ostojen ja lahjoitusten kautta. Se on luokitettu UDK:n mukaan ja asiasanoitukseen on käytetty Geosanastoa sekä YSAa. Kopioluetteloituihin tietueisiin on jätetty niissä olevat asiasanat. Kokoelmaa on kartutettu vuodesta 1885 lähtien ja myös vanhempaa aineistoa on säilytetty systemaattisesta. Osa vanhempaa aineistoa on siirretty varastoon (reilu 800 nimikettä), josta se on lainattavissa muutamaa huonokuntoista poikkeusta lukuun ottamatta. Kokoelmaa säilytetään GTK:n Espoon, Rovaniemen ja Kuopion kirjastoissa. Kirjoista 66 % sijaitsee Espoossa, 16 % Rovaniemellä ja 18 % Kuopiossa. Suurimmat aihealueet ovat alan kokous- ja kongressijulkaisut 17,4 % (UDK 061.3), malmigeologia 16 % (UDK 553), geodynamiikka, vulkanologia ja tektoniikka 13,6 % (UDK 551) sekä yleinen ja aluegeologia 9,1 % (UDK 55(1)). Käyttäjät koostuvat pääosin GTK:n omasta henkilökunnasta, tutkijoista sekä alan opiskelijoista.

Elgard Cathodic Protection System, HR-553, 1995

Following is the Operations Manual for the Pennsylvania Ave Bridge over I-235 located in Des Moines, Iowa, which was installed from July 1992 to October 1992. The project uses ELGARD™ 210 Anode Mesh and is divided into 3 zones. Periodic data collection and/or inspection of the cathodic protection system is required to insure proper operation and a long life. This Operation Manual contains a schedule, operation procedures, operation log forms, a rectifier panel drawing, and pertinent reference matenal. Operation procedures and operating records are contained in the body of the manual, while blank operation forms, as built drawings, and pertinent reference material are contained in the appendices.

Cathodic Protection for a Continuous Box Girder Bridge Deck, HR-553, 1993

Bridge deck deterioration due to corrosive effect of deicers on reinforcing steel is a major problem facing many agencies. Cathodic protection is one method used to prevent reinforcing steel corrosion. The application of a direct current to the embedded reinforcing steel and a sacrificial anode protects the steel from corrosion. This 1992 project involved placing an Elgard Titanium Anode Mesh Cathodic Protection System on a bridge deck. The anode was fastened to the deck after the Class A repair-work and the overlay was placed using the Iowa Low Slump Dense Concrete System. The system was set up initially at 1 mA/sq ft.

Examination of Curing Criteria for Cold In-Place Recycling, TR-553, 2008

Cold In-Place Recycling (CIR) has been used widely in rehabilitating the rural highways because it improves a long-term pavement performance. A CIR layer is normally covered by a hot mix asphalt (HMA) overlay in order to protect it from water ingress and traffic abrasion and obtain the required pavement structure and texture. Curing is the term currently used for the period of time that a CIR layer should remain exposed to drying conditions before an HMA overlay is placed. The industry standard for curing time is 10 days to 14 days or a maximum moisture content of 1.5 percent, which appear to be very conservative. When the exposed CIR layer is required to carry traffic for many weeks before the wearing surface is placed, it increases the risk of a premature failure in both CIR layer and overlay. This study was performed to explore technically sound ways to identify minimum in-place CIR properties necessary to permit placement of the HMA overlay. To represent the curing process of CIR pavement in the field construction, three different laboratory curing procedures were examined: 1) uncovered, 2) semi-covered and 3) covered specimens. The indirect tensile strength of specimens in all three curing conditions did not increase during an early stage of curing but increased during a later stage of curing usually when the moisture content falls below 1.5%. Dynamic modulus and flow number increased as curing time increased and moisture contents decreased. For the same curing time, CIR-foam specimens exhibited the higher tensile strength and less moisture content than CIR-emulsion. The laboratory test results concluded that the method of curing temperature and length of the curing period significantly affect the properties of the CIR mixtures. The moisture loss index was developed to predict the moisture condition in the field and, in the future, this index be calibrated with the measurements of temperature and moisture of a CIR layer in the field.

Examen variarum lectionum, quas ad textum Jesaiae hebraeum Alexandrina versio exhibet

Arkit: 1 arkintunnukseton lehti, U-X4.

Informe del Grupo Especial de Trabajo Establecido en Virtud de la Resolución 553(XXVI)

Incluye Bibliografía