White Cement
Mostrando 1-12 de 72 artigos, teses e dissertações.
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1. Marble and granite waste as mineral addition in mortars with different water-cement ratios
Resumo A construção civil está associada a diversos impactos ambientais, como a emissão de CO 2 durante a produção de cimento e a geração de resíduos. Neste contexto, visando contribuir para o desenvolvimento sustentável do setor, este trabalho teve como objetivo estudar o efeito da substituição de cimento por resíduo de mármore e granito (RMG
Ambiente Construído. Publicado em: 2022
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2. Polymicrobial Leakage and Retention of MTA and Portland Cement in a Model of Apexification
Abstract Objective: To evaluate the sealing capacity and retention of apical barriers made with mineral trioxide aggregate (MTA) and Portland cement (PC). Material and Methods: Fifty-six bovine incisors were sectioned 8 mm above and 12 mm below the cement-enamel junction. The root canal was enlarged with a diamond drill to create a standard 2.5 mm diameter
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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3. Análise da composição química dos cimentos MTA Angelus® branco, cinza e HP Repair® através de Microscopia Eletrônica de Varredura (MEV) acoplada a Espectrômetro de Energia Dispersiva (EDS)
Resumo Introdução Devido às suas propriedades biológicas e físico-químicas, o MTA tem sido indicado para diferentes situações clínicas na Endodontia. Objetivo O objetivo foi analisar a composição química dos cimentos MTA Angelus branco, cinza, e Repair HP. Material e método Foram confeccionados cinco corpos de prova de cada tipo de cimento es
Rev. odontol. UNESP. Publicado em: 25/11/2019
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4. CONVERSION OF SPENT FAT OIL INTO LIQUID AND GASEOUS FUELS THROUGH CLINKER CATALYZED PYROLYSIS
Abstract Repeated heating of fat oil may result in the formation of highly toxic aldehyde compounds. The oils having such compounds are considered as health hazards and therefore their repeated use is banned in many countries. Since huge quantities of the used oil need urgent disposal, this work is focused on the disposal of used oil for the resource recover
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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5. Propriedades das argamassas de revestimento contendo resíduo proveniente da produção do TiO2 (MNR)
Resumo Nesse trabalho avaliou-se a influência da adição do resíduo da produção de TiO2, minério não reagido (MNR), nas propriedades de argamassas de revestimento. Para isso, avaliaram-se as propriedades de argamassas mistas (cimento Portland branco e cal) com adições de 0%, 5%, 10% e 15% de MNR, em relação à massa do cimento. As argamassas foram
Cerâmica. Publicado em: 15/08/2019
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6. Effect of Glass Fiber Post Adaptation on Push-Out Bond Strength to Root Dentin
Resumo O objetivo neste estudo foi avaliar o impacto de diferentes diâmetros de pinos de fibra de vidro (PFVs) na resistência de união à dentina. Quarenta dentes humanos unirradiculares foram tratados endodonticamente e utilizados para cimentação de PFVs (White Post DC, FGM) com diferentes diâmetros (n=10): P1 - ø 1,6 mm coronal x 0,85 mm apical; P2
Braz. Dent. J.. Publicado em: 22/07/2019
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7. Comportamiento del residuo de vidrio molido en cementos mezcla: Estudio comparativo con microsilice
ABSTRACT Due their high content of silica in an amorphous state the glass, in theory, can behave as pozzolanic material when are finely ground. This opens up an interesting way of reusing these materials in the Portland cement industry (CP), especially considering that solid urban waste (RSU) in Argentina contains between 3 and 5% by weight of glass. This pa
Matéria (Rio J.). Publicado em: 05/03/2018
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8. Effect of Specimens' Shape and Size on the Determination of Compressive Strength and Deformability of Cement-lime Mortars
This work presents comparative analyses of the effect of specimens' shape and size on the compressive strength and modulus of elasticity of mortars. Mortar mixtures with compressive strength between 5 and 20 MPa were produced. Experimental tests determined the compressive strength of cylinder specimens of (5 x 10) cm and (10 x 20) cm, and also cubic specimen
Mat. Res.. Publicado em: 22/01/2018
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9. THERMAL EFFICIENCY OF DIFFERENT COVERAGE MATERIALS IN REDUCED MODELS OF ANIMAL HUSBANDRY FACILITIES: A CASE STUDY
ABSTRACT This study aimed to assess different combinations of coverage materials in reduced models of animal husbandry facilities based on thermal comfort indices. It was conducted in an experimental area of the Research Center in Ambience located in São Paulo State, Brazil (22°42′30″ S and 47°38′00″ W). The performance of ceramic and fiber-cement
Eng. Agríc.. Publicado em: 2017-06
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10. Repair of Bone Defects with Chitosan-Collagen Biomembrane and Scaffold Containing Calcium Aluminate Cement
Resumo Biomateriais inovadores podem fornecer uma promissora nova direção para o tratamento de defeitos ósseos, estimulando um processo de reparo adequado, sem danos aos tecidos adjacentes. O objetivo deste estudo in vivo foi avaliar a biocompatibilidade e a capacidade osteoindutora de uma biomembrana e um scaffold compostos por colágeno e quitosana, con
Braz. Dent. J.. Publicado em: 2017-06
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11. Influence of resin-modified glass ionomer and topical fluoride on levels of Streptococcus mutans in saliva and biofilm adjacent to metallic brackets
Abstract Decalcification of enamel during fixed orthodontic appliance treatment remains a problem. White spot lesions are observed in nearly 50% of patients undergoing orthodontic treatment. The use of fluoride-containing orthodontic materials has shown inconclusive results on their ability to reduce decalcification. The aims of this investigation were to co
J. Appl. Oral Sci.. Publicado em: 2017-04
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12. Is the bonding of self-adhesive cement sensitive to root region and curing mode?
Abstract Objectives To evaluate the influence of two curing techniques on the degree of conversion (DC) of resin cements and on bond strength (BS) of fiber posts in different regions of root dentin. Material and Methods Twenty single-rooted premolars were endodontically treated, and the post spaces were prepared. The roots were randomly divided into two
J. Appl. Oral Sci.. Publicado em: 2017-02