Modifying asphalt emulsion with different types of polymers for surface treatment applications

2017 ◽  
Vol 35 (14) ◽  
pp. 1473-1480 ◽  
Author(s):  
A. M. M. Abd El-Rahman ◽  
M. El-Shafie ◽  
Z. L. Abo-Shanab ◽  
S. A. El-Kholy
Keyword(s):  
Surface Treatment ◽  
Asphalt Emulsion ◽  
Different Types

scholarly journals ESTRATÉGIAS DE CIMENTAÇÃO EM RESTAURAÇÕES LIVRES DE METAL: UMA ABORDAGEM SOBRE TRATAMENTOS DE SUPERFÍCIE E CIMENTOS RESINOSOS

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Andréa Maria Silva ◽  
Viviane Figueiredo ◽  
Alcione Farias ◽  
Nadja Maria Brito ◽  
Maria Helena Catão ◽  
...  
Keyword(s):  
Decision Making ◽  
Surface Treatment ◽  
Clinical Success ◽  
Ceramic System ◽  
Metal Free ◽  
Restorative Treatment ◽  
Different Types ◽  
Success Of Treatment ◽  
Proper Strategy ◽  
Cementing Agent

The metal-free restorations are sought out due to aesthetic needs. The success of restorative treatment depends on the peculiarities of each ceramic system and on a proper strategy for cementing. This article presents the surface treatment of the interfaces involved during the cementing, the dental structure and restoration, and elucidates the cementing agent. It emphasizes the different types of surface treatment for acid-sensitive and acid-resistant ceramics, and hybrid ceramics. The literature review was based on scientific articles published in different database (PubMed, Medline, Scielo, Bireme and Google Scholar) using the keywords: prosthodontics, ceramics, surface treatment and cementation. Relevant articles were selected between 2002 and 2015 regarding the issue under review. The knowledge of dentists about the cementation strategies, depending on the type of ceramic used, is necessary for decision making during the cementing and promote the clinical success of treatment with metal-free restorations.

Effectiveness of Surface Treatment With Blasted Bioceramic Materials on Implants Surfaces

2021 ◽  
Author(s):  
Suet Yeo Soo ◽  
Nikolaos Silikas
Keyword(s):  
Surface Layer ◽  
Surface Treatment ◽  
Calcium Oxide ◽  
Surface Deposition ◽  
Commercially Pure ◽  
Different Types ◽  
Implant Integration ◽  
Surface Morphologies ◽  
Scanning Electron ◽  
Blasting Method

Hydroxyapatite (HA) and other forms of bioceramics coatings had been reported to stimulate bone healing, which helps in initial implant integration. This study was to evaluate the effectiveness of air blasting with two combinations of bioceramic powders (hydroxyapatite and calcium oxide) on the selected implant surfaces for surface deposition. Five different types of implant disks were tested, namely Commercially pure (Cp), Sandblasted (SB), Sandblasted and etched(SBE), SLActive®, Roxolid®. The studied samples were blasted with apatite abrasive bioceramic powders, 95% Hydroxyapatite (HA)/5% Calcium Oxide (CaO) and 90% Hydroxyapatite (HA)/10% Calcium Oxide (CaO). The surface and elemental differences between the blasted samples were compared using a Scanning Electron Microscope (SEM) and Energy Dispersive Spectroscopy (EDS). Results after surface treatment had demonstrated changes in surface morphologies; most evidently on the Cp implant discs. All treated surfaces revealed a non-uniform distribution of the treatment on the surface layer, with dispersed patches of bioceramic powders over the surfaces. The experimental blasting method used in this study has demonstrated the ability to deposit bioceramic materials on different implant surfaces.

scholarly journals Influência de materiais de proteção na resistividade elétrica do concreto

2012 ◽  
Vol 2 (1) ◽  
pp. 46-56
Author(s):  
M. S. Santor ◽  
A. L. G. Gastaldini ◽  
C. Crauss ◽  
G. T. Dos Santos ◽  
F. C. Rossini
Keyword(s):  
Electrical Resistivity ◽  
Surface Treatment ◽  
Protective Action ◽  
Concrete Structures ◽  
Concrete Durability ◽  
Surface Protection ◽  
Different Types ◽  
Polymer Mortar ◽  
Durability Of Concrete

RESUMOA durabilidade das estruturas de concreto armado é resultado da ação protetora do concreto sobre a armadura. Quando a passivação do aço deixa de existir a estrutura torna-se vulnerável ao fenômeno da corrosão, cuja propagação, após iniciada é essencialmente controlada pela resistividade elétrica do concreto. O objetivo deste trabalho foi avaliar a alteração na resistividade elétrica de concretos produzidos com diferentes tipos de cimento, CP II F, CP IV e CP V, submetidos a tratamento superficial com produto obturador dos poros e argamassa polimérica. Para efeito de análise os resultados foram comparados com os mesmos concretos sem aplicação do produto. Esses tratamentos foram realizados em concretos confeccionados com resistências à compressão na idade de 28 dias de 21,6MPa, 26,6 MPa e 31,6 MPa. Para todos os tipos de cimento utilizados e níveis de resistência adotados o tratamento superficial com argamassa polimérica resultou em maiores valores de resistividade elétrica.Palavras chave: Concreto; durabilidade; material de proteção superficial; resistividade elétrica.ABSTRACTThe durability of concrete structures is a result of the protective action of concrete on the reinforcement. When there is no passivation of steel, the structure becomes vulnerable to corrosion, and once corrosion starts its propagation is essentially controlled by the electrical resistivity of concrete. The objective of this study was to evaluate the change in electrical resistivity of concretes produced with different types of cement: CP II F, CP IV and CP V that were surface-treated with pore filler and polymer mortar. For analysis purposes, the results were compared with those of the blanks that were not subjected to surface treatment. These treatments were performed in concretes with the following compressive strengths at the age of 28 days: 21.6 MPa, 26.6 MPa and 31.6 MPa. For all types of cement used and strengths adopted, surface treatment with polymer mortar led to higher electrical resistivity values.Key words: Concrete; durability; surface protection material; electrical resistivity.

Kostenstufen der Betonsanierung, oder warum es nicht immer besser ist, sofort zu sanieren / Stages of expenses for restoration of concrete structures, or why it is not always the best solution to restore immediately

1999 ◽  
Vol 5 (4) ◽  
pp. 359-386
Author(s):  
R. Wolfseher
Keyword(s):  
Surface Treatment ◽  
Concrete Structures ◽  
The Other ◽  
Optimal Time ◽  
Actual State ◽  
Construction Process ◽  
Different Types ◽  
The One ◽  
The Right ◽  
Bearing Structure

Abstract Restoration of concrete structures implies repair of damage and a surface treatment which prevents future damage of the load bearing structure in case it is renewed in time. Depending on the performance of the protective surface treatment the substrate has to be prepared more or less carefully. On the one hand it is worth while to apply an inexpensive solution appropriate for a given situation and on the other hand to predict the optimal time for a necessary intervention. Different types of surface treatments can be attributed to discrete stages of expenses. In this contribution it is shown that based on a reliable analysis of the actual state, the cheapest type of restoration can be found in an unambiguous way and executed at the right moment. At the end examples are given. The necessary investment can be optimized. Finally, it will be underlined that money spent for quality control during the construction process can be considered to be an investment yielding 17% interest.

Installing Composite Surface Treatment and Thin Wearing Courses Using Different Types of Fibre

2015 ◽  
Vol 47 (1) ◽  
pp. 66-71 ◽  
Author(s):  
A. V. Kochetkov ◽  
L. V. Yankovskii ◽  
I. B. Chelpanov
Keyword(s):  
Surface Treatment ◽  
Composite Surface ◽  
Different Types

“Ceramic Sets” in Maya and Toltec Ceramics

2018 ◽  
pp. 277-301
Author(s):  
George J. Bey
Keyword(s):  
Surface Treatment ◽  
New Method ◽  
Economic Systems ◽  
Central Mexico ◽  
Different Types ◽  
Production And Distribution ◽  
Similar Range ◽  
Household Activities

This chapter suggests a way Mesoamerican archaeologists can move beyond the Type-Variety system of ceramic classification. It offers evidence for a ceramic unit called the “ceramic set.” It is assumed consumers within a culture each had a similar range of serving and preparation needs and the range of formal variation found in different types of ceramics represented an effort by different producers to meet these needs. The range of forms found within one of these types a "ceramic set." Ceramic set are further defined as a series of forms that are similar in paste, slip, and surface treatment but which are used for a variety of serving needs. The chapter examines the evidence for ceramic sets in two Mesoamerica societies, the Toltec of Central Mexico (A.D. 900–1150) and the Maya of the Southern Lowlands (A.D. 700–1000) in an effort to provide a new method for identifying the nature of household activities in these societies. It also examines whether ceramic sets allow archaeologists to define evidence of innovation and competition in the production and distribution of ceramics in Pre-Columbian pottery economic systems.

THE INFLUENCE OF THE TYPE, STRUCTURE AND CONDITION OF ROAD COATING ON THE OPERATING PROPERTIES OF HORIZONTAL ROAD MARKING

2019 ◽  
pp. 42-46
Author(s):  
Yuriy Hostev ◽  
Lev Rumiantsev ◽  
Tetyana Kostrulova
Keyword(s):  
Surface Treatment ◽  
Smooth Surface ◽  
Chemical Nature ◽  
Asphalt Pavement ◽  
The Road ◽  
Different Types ◽  
Long Time ◽  
High Roughness ◽  
On The Road ◽  
Road Marking

The factors that influence on functional durability of the road marking, in particular, the type, quality, condition and surface structure of the road surface are considered in the article. The durability of the road marking will be significantly reduced on asphalt pavement with low quality bitumen or with a high content of bitumen in the mixture. As a result of bitumen fogging, the road marking loses its performance, especially affecting luminance and retroreflectivity. The degree of pavement wear also affects the durability. Old, fragile pavement is unable to retain the road marking for a long time, so its service life will be extremely low. The wear of road marking on the cement pavement is higher than on the asphalt pavement. This is due to the peculiarities of the interaction of pavements of different chemical nature with the road marking materials. The article presents the results of studies of the effect of pavement with different roughness and different types on the properties of retroreflectivity. It is established that on the road sections with pavement having a rough surface treatment, retroreflectivity is reduced by 2-3 times in comparison with the asphalt pavement with a smooth surface. Also, the results of the studies showed that the wear of the road marking lines on the surface with high roughness after 3 months of operation is almost 2 times higher than the degree of road marking wear on the smooth surface. On cement pavement the decrease of retroreflectivity occurs more intensively during the first months of operation. The areas with cement pavement wear faster than on those with smooth asphalt pavement, but not as intensively as the areas with surface treatment. To ensure the durability of road marking on asphalt pavement with treated surface treatment and of cement pavement in comparison with the road marking on asphalt pavement with natural roughness, it is necessary to give preference to the road marking materials with higher viscosity (cold and hot plastics) or increase application of paint amount by 50-60 %, as well as increase the specific use of glass beads and of bigger fractions. Keywords: road marking, wear, surface treatment, retroreflectivity, paint, roughness.

Improvement of Steels Corrosion Resistance in Liquid Lead and Lead-Bismuth by Coating - Review

2020 ◽  
Author(s):  
Martina Pazderová ◽  
Lucia Rozumova ◽  
LukአKoŠek ◽  
Anna Hojna
Keyword(s):  
Corrosion Resistance ◽  
Surface Treatment ◽  
Steel Substrate ◽  
Aqueous Media ◽  
Liquid Lead ◽  
Protective Barrier ◽  
Different Types ◽  
And Diffusion

Abstract HLM-cooled systems are under wide investigation and development. The technology needs to study the materials corrosion, which has a different progress than corrosion caused by aqueous media. Improvement of the corrosion resistance can be achieved by alloying the bare material, but the degradation of steels continues with less or more intensity. Deposition of protective barrier may reduce the metals dissolution and diffusion of liquid lead into the steel substrate. Different types of surface treatment and coatings composition were evaluated to find out the most convenient solution for the steel's protection.

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