Buscar
Mostrando ítems 21-30 de 857
10000 years cement
(2019)
Influence of filler content on static properties of glass-reinforced bone cement
(John Wiley & Sons Inc, 2000-11-20)
A commercial acrylic bone cement was modified by the incorporation of different weight fractions of glass spheres. The influence of the filler proportion on the mechanical behavior was assessed. Composite cements were ...
Compósitos Portland-biopolímeros para cimentação de poços de petróleo
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Ciência e Engenharia de MateriaisProcessamento de Materiais a partir do Pó; Polímeros e Compósitos; Processamento de Materiais a part, 2006-10-31)
The oil production in mature areas can be improved by advanced recovery techniques. In special, steam injection reduces the viscosity of heavy oils, thus improving its flow to surrounding wells. On the other hand, the ...
Cellulose modified fibres in cement based composites
(ELSEVIER SCI LTD, 2009)
The objective of the present work is to evaluate the effect of surface modification of cellulose pulp fibres on the mechanical and microstructure of fibre-cement composites. Surface modification of the cellulose pulps was ...
Eucalyptus pulp fibres as alternative reinforcement to engineered cement-based composites
(ELSEVIER SCIENCE BV, 2010)
This paper evaluates the advantages of using hardwood short fibre pulp (eucalyptus) as alternative to softwood long fibre pulp (pinus) and polymer fibres, traditionally used in reinforcement of cement-based materials. The ...
Evaluation of cellulosic pulps treated by hornification as reinforcement of cementitious composites
(Elsevier B.V., 2015-12-15)
This study evaluated the effect of the homification process on cellulosic fibers of bleached pine and unbleached eucalyptus with in order to improve its durability and volume stability to be used as reinforcement in ...
Cemented horizons and hardpans in the coastal tablelands of Northeastern Brazil
(Sociedade Brasileira de Ciência do Solo, 2018)
Rationalizing the effect of accelerated carbonation and accelerated ageing on transition zone of cellulose fibers in cement based composites
(2015-01-01)
The objective of the present work is to show the effect of accelerated carbonation on the transition zone of cellulose fibers in cement based composites. Accelerated carbonation increased the content of calcium carbonate ...
Interfacial transition zone between lignocellulosic fiber and matrix in cement-based composites
(2017-01-01)
The objective of this chapter is to discuss some aspects that affect the interfacial transition zone between lignocellulosic fibers and cement matrix, such as raw materials, processing, and curing methods. A major advantage ...