Cementitious materials
Properties of Concrete on Replacement of Coarse Aggregate and Cementitious Materials with Styfoam And Rice Husk Ash Respectively
... Medium weight concrete is the choice of designers owing to lighter and more economic structures. Medium weight concrete is produced by introducing air inside the concrete; either by using gassing and foaming agent or ...
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Reuso de rejeitos do granito para obtenção de compósitos utilizando materiais cimentícios / Reuse of granite rejects to obtain composites using cementitious materials
... This work aims to study the feasibility of applying granite sawdust for the production of composite materials with cement materials for application in civil construction. Through a factorial planning, the ...
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Characterization of sugar cane bagasse ash for use as pozzolan in cementitious materials.
... Com exceção da cinza produzida a 600 °C, que apresenta índice de atividade igual a 77%, as demais amostras não alcançam o valor mí- nimo (75%) estipulado pela NBR 12653/1992 17 para qu[r] ...
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Air-incorporation in cementitious materials: a new approach for developing rendering mortars Roberto Cesar de Oliveira Romano Maria Alba Cincotto Rafael Giuliano Pileggi Resumo
... The use of air-entraining agents in rendering mortars has been studied for many years both at universities and private research centers. Hence, there is a wealth of information on this theme in the literature, mainly ...
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Matéria (Rio J.) vol.22 número2
... of cementitious materials, nanotechnology can improve their properties such as cohesion, cracking due to water loss by drying or under endogenous conditions, mechanical strength, ductility [2,3], and ...
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Rev. IBRACON Estrut. Mater. vol.2 número3
... following materials were used in the concrete mixtures: type V high-early strength Portland cement, according to Brazilian Stan- dard NBR 5733 (similar to ASTM type III); local natural quartzous sand with maximum ...
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Strength Characteristics and Durability Characteristics of Silicafume and Metakaolin based Concrete
... Abstract - Silica fume (SF) and Metakaolin are cementitious materials used as admixtures to produce high strength concrete and to reduce the permeability. Also, Silica fume is used to make durable concrete ...
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UNIVERSIDADE FEDERAL DE SÃO CARLOS CENTRO DE CIÊNCIAS EXATAS E DE TECNOLOGIA PROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIA E ENGENHARIA DE MATERIAIS
... particularly cementitious materials industry, offers a promising option for BR utilization, since it consumes and produces large quantities of raw materials and products, ...the cementitious ...
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Rev. IBRACON Estrut. Mater. vol.6 número4
... Four pastes with water-cementitious materials ratio of 0.47 and dif- ferent contents of replacement cement mass were designated as follows: reference paste with cement and water (RF-PC); paste with 10% ...
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Resíduos agroindustriais aplicados à compósitos cimentícios / Agro-industrial waste applied to cementitious composites
... to cementitious composites can present itself as solutions for the use of by-products from other sectors and the reduction of environmental ...of cementitious matrices presents itself as an alternative ...
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MATERIALS AND METHODS Raw materials and evaluated treatments
... The results obtained for the parameters: density (before and after treatment), water absorption (at 2 hours and 24 hours), thickness swelling (at 2 hours and 24 hours), residual swellin[r] ...
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MATERIALS AND METHODS Raw Materials and tannin estimation
... anti-nutritional effects of tannins in animal feed. In the medical industry, it is used in the production of gallic acid, a substrate for the chemical synthesis of trimethoprim, propyl gallate, dyes and inks etc. (13, ...
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MATERIALS AND METHODS Biological materials and chemical reagents
... Another aspect to be considered is the effect of the trypsin inhibitor on the growth of the two isolates of the ectomycorrhizal fungus, where the isolate 185 (incompatible) was able to g[r] ...
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Immobilização do cromo em matrizes de cimento após tratamento por estabilização/solidificação de resíduos químicos sólidos
... In the stabilization/solidification process, a fixative (binder) is usually used as a solidifying agent. The main fixatives used are: Portland cement, lime, asphalt, polymer, etc. Among these, the most widely used is ...
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Hydraulic binder obtained from recycled cement and sand powder Aglomerante hidráulico obtido de cimento reciclado e pó de areia
... supplementary cementitious material; however, there have been virtually no reports on the reuse of these materials as alternative ...in cementitious compounds produced with binders obtained by ...
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TECHNICAL PAPER TIMBER BEAM REPAIR BASED ON POLYMER-CEMENTITIOUS BLENDS
... PANZERA et al. (2012) have also reported the effect of carbon nanotube (CNT) inclusions into polymer-cementitious composites. The CNTs must be treated to avoid the clustering effect, in which hinders the ...
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The system of account and control of logistics costs
... tion materials, equipment to the civil engineering objects in the required quantities at the specifi ed ...of materials, goods and productions: purchase of materials and goods, completion ...
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Engineered Cementitious Composites Using High Volume Fly Ash and PVA Fibers for the Sustainable Development in Construction Industry
... Majority of the countries are putting sincere efforts to correct the results of the past disregard in utilizing the natural resources in connection with the growing infrastructural needs of the world. Infrastructural ...
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Modelagem do processo de falha em materiais cimentícios reforçados com fibras de...
... Continuous and discontinuous approaches were developed for modeling the quasi- brittle behavior of the bulk cementitious matrix. In the first approach, a contin- uum isotropic damage model including two independent ...
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Mat. Res. vol.16 número6
... The samples’ behavior at 108 days is shown in Figure 10. An increase in the matrix impedance occurred at higher and intermediate frequencies, which was more noticeable in samples blended with a w/c of 0.5 and was a ...
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