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An ultra-lightweight concrete with a proper workability is obtained and the hardened concrete shows excellence performances in terms of mechanical property, thermal property and durability.
Since the UHPFRC contained more constituents and finer particles than NSC and also included short and high-strength steel fibers, careful mixing was required to achieve proper workability, particle distribution, and packing density.
Based on the results, it is recommended that SCC should have a plastic viscosity of 30 70 Pa s and 30 130 Pa s for concrete made with crushed aggregate and gravel, respectively, to ensure proper workability.
In this study, the effect of chemical and mineral admixtures, including superplasticizer, viscosity modifying agent (VMA), limestone powder and fly ash in different W/C on fluidity, viscosity, and stability of self-consolidating mortar is investigated and proper workability regions for the prepared mixtures are presented.
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The proper paste amount the better the workability and the less the workability loss.
This is particularly important in the case of high-modulus asphalt concrete (HMAC), because these mixtures are produced from hard bitumens that need high temperatures to achieve the required viscosity and ensure the proper coating of the aggregates, the workability and compactability of the mixture.
The lightweight aggregate cellular concrete containing an adequate amount of air entraining agent was shown to have excellent characteristics including very-high workability, low density and proper strength, and it can be applied in architectural members with high acoustic shielding and thermal insulating properties.
A proper SWSSC mix was developed to achieve the target strength and desirable workability.
The test results show that proper foam content introduced into the EPS mixture can greatly improve the workability, strength and thermal conductivity of EPS foamed concrete.
As significant volumes of cementitious materials and micro steel fibers can result in poor workability of UHPFRC, polycarboxylic acid high-performance water-reducing admixture (superplasticizer) was added to provide proper fluidity.
First, look at workability.
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