Exemplos de uso de Reference mixture em Inglês e suas traduções para o Português
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Reference mixture obtained for wet grinding.
For narcissus, where appropriate the reference"mixture.
A reference mixture was adopted as a benchmark for all other mixtures of mortar.
In the paste SW-BW-PC, for the two ages,the decrease was only 5% compared to the reference mixture.
The studies also included a reference mixture, no fibers and expanded vermiculite-term, adding the amount of water contained in the latex emulsion, and analyzing the influence of these components.
A the values of compressive strength of the material samples are around 41MPa and of the reference mixture are 79.5 MPa.
It could be identified, that SBA-10m has a viable use, since the mixtures with such ashes showed better results in compared to the reference mixtures, despite the lower performance in comparison to the mixtures with re-burnt ashes. This treatment process is simple, demanding less energy and time for preparation.
Thus, there was a reduction of approximately 48% of the value of the modified mixture compared to the reference mixture.
Nine concrete mixtures were studied, all with a constant water/ cement ratio(equal to 0.45),namely: four reference mixtures of the each type of portland cement(cp ii-e-40, cp iii-40, 40-cp iv-40 and cp v-ari); four mixtures with addition of 0.8% arp and finally a mixture containing cement cpiii-40, arp and polypropylene fiber 0,45kg/m3.
Less cement implies a smaller amount of hydrated products anda lower compressive strength compared to the reference mixture 9-15.
For the modulus of elasticity test,comparing the results of modified mortars with the reference mixture, there is a significant decrease in this parameter.
Among the mixes with different types of SBA treatment addition,the consistency of mix with re-burnt SBA SBA-R was the closest to the consistency of the reference mixtures.
Results on Table 9 indicate that mixtures with ashes accelerated setting since the initial andfinal set times were lower than those of the reference mixtures, except for SBA-3h mixture with w/c of 0.48 and 0.52. In these cases, the data were similar.
This demonstrates that the presence of SSA in concrete provided a reduction of electric charge of respectively 30% and 46% for concentrations of 5% and10% compared to the reference mixture.
Table 1 presents the mean results of the compressive strength at ages 7,28 and 90 days of the additions of 4%, 6%, 8% and 20% and the reference mixture, as well as their consistency indexes and water/cement ratio.
All mortars with incorporated ash reached higher compressive strength at 28 days,when compared to the reference mixtures without ash.
The highest strength was obtained with the addition of 1% NTC where the compressive one at 28 days indicated 51.8 MPa representing a 10% of increase in compressive strength when compared to the reference mixture without nanotube carbon, which evidenced strength of 47.2 MPa.
Tests were done to characterize the chemical additive binder modified with crumb rubber and the mechanical properties of the mixture. those tests allowed compare the results with a reference mixture, produced at normal temperature, a hot mix with rubber asphalt.
The results carried out were compared with the reference asphalt mixture(mix c1), composed of granite aggregates, and with the specifications according to dnit 031/2006¿es and others studies.
The experimental program is developed with eight mixtures distributed as follows: a mixture of reference with w/c ratio 0.30 and three mixtures with sap levels of 0.1%, 0.2% and 0.3%(in relation to the mass of cement), two mixtures of reference with w/c ratios equal to 0.35 and 0.40 respectively and two mixtures with 0.2% of sap, one for each reference. .
Initially, three mixtures of reference mortar without SBA addition were produced with proportion, in mass, of 1:3 cement to fine aggregates, with water cement ratios of 0.44, 0.48 and 0.52.