superplasticizer


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superplasticizer

An additive that increases the workability of a concrete mixture or a mortar mixture.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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Fresh mortar with low water to cementitious ratio needs superplasticizer to increase its workability.
Cement Zeolite Superplasticizer Na Z0 100% - - - Z5 - 5% 1.25% - Z10 - 10% 2.30% - Z15 - 15% 3.50% - Z20 - 20% 4.50% - Z5N - 5% 1.50% 7% Z10N - 10% 2.70% 7% Z15N - 15% 4.00% 7% Z20N - 20% 5.00% 7% Table 3.
Finally, water and superplasticizer were added, and the mixture was stirred until it was cast.
The ordinary Portland cement, fine aggregate, water, superplasticizer, and additional silica fume were mixed to prepare the slurry.
Steel fiber-reinforced concrete Dramix RC 65/60 BN Material Plain concrete 0.75% 1.00% 1.50% Cement 439.05 425.68 428.69 423.01 Natural sand 870.10 849.37 857.38 846.02 Coarse aggregate 870.10 849.37 857.38 846.02 Water 173.50 167.24 168.82 166.58 Steel fiber 0.00 58.87 78.50 117.75 Superplasticizer 3.29 4.25 4.29 4.23 Workability (mm) 1 210 135 130 85 Steel fiber-reinforced concrete Dramix RC 80/60 BN Material 0.75% 1.00% 1.25% Cement 424.68 429.61 430.70 Natural sand 849.37 859.21 861.39 Coarse aggregate 849.37 859.21 861.39 Water 167.24 169.18 169.61 Steel fiber 58.88 78.50 98.13 Superplasticizer 4.25 4.30 4.31 Workability (mm) 40 120 85 Table 2.
The viscosifying effect of metakaolin can also be overcome by using extra Superplasticizer reducing the sand content, or choosing coarser grades of sand [70].
Research interests: concrete properties, concrete durability, concretes with superplasticizers, frost resistance of concrete.
With the superplasticizer, there is no incentive to add water and you get the stiff mix (low w/c ratio) you need.
For preparing the ultra high performance concrete mixture, the superplasticizer Sika Viscocrete 20HE was used, which made high water reduction and getting very high early strength.
based on polycarboxylic ether polymer was used as a high-performance superplasticizer (SP) for reducing water content of the mix.
To disperse the carbon nanostructures within the cement matrix, the GO was added gradually to water containing polycarboxylate ether (PCE) superplasticizer and the mixture was sonicated for 5 min after each addition to give a total sonication time of 40 min.