cement paste
Laser Radiation CO2 Effects in Cement Paste at Different Hydration Stages after Preparation
... with reference to saturation times, after 30 min and 24 hours decreases at high temperatures. Both these facts have consequences for workability of concrete (Ortiz et al., 2009). On the other hand, concrete cured at low ...
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Mat. Res. vol.15 número4
... that samples with a larger amount of this silica gel were weaker (Figure 3). For example, the compression strength of the samples with 15% of dried silica gel in hardened cement paste after 28 days ...
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Effect of mixing method on the mini-slump spread of Portland cement pastes Efeito do método de mistura sobre o espalhamento mini-slump de pastas de cimento Portland
... The Marsh cone and mini-slump cone are techniques that can be applied in cement paste. It is possible to find many refer- ences naming these testing methods as supplementary testing as results can be ...
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Mat. Res. vol.11 número4
... the cement paste and the bar; when that connection is broken, strength appears in the slipping due to friction, the intensity of which depends on the surface type of the ...
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Curing Methods and Their Effects on The Strength of Concrete
... a cement paste by the process of hydration. The cement paste glues the aggregate together, fills voids within it and allows it to flow more ...
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Influence of the moisture content on the dynamic modulus of elasticity of concrete made with recycled aggregate
... the cement paste (strength, content, age) and the transition zone (porosity, composition, age, strength); the test procedure (specimen characteristics, moisture content, device used) and the structure ...
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Rev. IBRACON Estrut. Mater. vol.4 número4
... which cement paste deserves prominence, is important for the development of a more eficient concrete, with an improved hydration process and resistance to plastic shrinkage ...the cement hydration ...
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Properties of Concrete on Replacement of Coarse Aggregate and Cementitious Materials with Styfoam And Rice Husk Ash Respectively
... Greater surface area of the aggregate provides a larger area for bonding contact with the cement paste. Therefore, the strength of the concrete matrix will be higher. A smaller sized aggregate would yield ...
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Compósitos de cimento - borracha de pneus: efeito da escória nas propriedades.
... a cement- based material deformation that often leads to cracking due to segregation and to volume changes during setting and hydration, is a paste ...in cement paste is twice as high as in ...
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Mat. Res. vol.17 número1
... Portland cement paste and lateritic aggregates with the objective of promoting the implementation of structural ...performance paste in order to improve its binding to the ...the cement ...
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Rev. IBRACON Estrut. Mater. vol.1 número2
... the cement paste and the tire ...with Cement Portland mixes presents bet- ter performance after the rubber treatment with NaOH aqueous solution, the use of treated rubber in mortars does not present ...
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USE OF CRUMB RUBBER TO IMPROVE THERMAL EFFICIENCY OF CEMENT-BASED MATERIALS
... Although, extensive work has been done on the mechanical properties of crumb rubber-cement composite, little or no work has been previously reported on the thermal conductivity. This research project is an attempt ...
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Matéria (Rio J.) vol.21 número3
... portland cement pastes is greatly affected by the time of addition of the ...between cement and ...the cement also has been investigated [9,10] because of its influence on the wettability of the ...
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WHITE CEMENT IN SUSTAINABLE DEVELOPMENT
... white cement in composite pavement design where there is heavy traffic loads are acting as well as number of vehicles are more such as junctions, bus stops, check posts ...White cement helps to lower the ...
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Effect of preparation practices and the cowpea cultivar Vigna unguiculata L.Walp on
... Akara is one of Brazil’s national treasures prepared from cowpea (Vigna unguiculata L.Walp), grated onions and salt and deep- fried in crude palm oil. The results of this study on akara preparation methods showed that, ...
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J. Braz. Chem. Soc. vol.20 número2
... Hydrogen peroxide (H 2 O 2 ) plays important role in the fields of clinical test and biological chemistry. The oxidation of some biological substances in body can produce certain amounts of H 2 O 2 . The content of H 2 O ...
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J. Braz. Chem. Soc. vol.20 número9
... carbon paste/Nujol (CP/Nujol) or carbon paste/castor oil (CP/castor oil), while the counter electrode was a Pt coil and the reference electrode was an Ag|AgCl, Cl - ...
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Sinalbin degradation products in mild yellow mustard paste
... mustard paste production process, ground yellow mustard seeds were pretreated according to the original manufacturer’s ...mustard paste product, as well as to check the reliability of the analytical method ...
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J. Braz. Chem. Soc. vol.14 número2
... carbon paste modified with a crude extract of Fungi Laccase, the effect of paste composition, initial stirring time, scan rate, potential pulse amplitude and pH (using hydroquinone, adrenaline and dopamine ...
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J. Appl. Oral Sci. vol.20 número1
... between corticosteroid-antibiotic preparation and propolis paste, and between propolis paste and vehicle group at 14 and 28 days, with p=0.01 and 0.02, consecutively, with higher scor[r] ...
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