Applied Sciences | Free Full-Text | Effect of Functional
Superplasticizers are widely used to produce flowable, strong, and durable Portland cement concretes and mortars. The hydration behaviors of Portland cement in the presence of superplasticizers have been investigated by a number of researchers [ 1, 2, 3 ].
Buildings | Free Full-Text | Performance and Compatibility of
The main properties of the NSF and PCE-based superplasticizers are summarized in Table 2. Concretes with w/c ratio equal to 0.52 and with a cement content of 325 kg/m 3 were manufactured. The concrete mix composition is shown in Table 3. Particle size distribution of aggregates is shown in Figure 1.
Superplasticizers for Concrete - MDPI
the development of an innovative class of superplasticizers—such as polycarboxylate ether-based plasticizers (PCE)—caused a big change in the eld of concrete technology. PCEs signicantly improved the performance of concrete in terms of workability retention up to a couple of hours, while also
Applied Sciences | Free Full-Text | Effect of Functional
The hydration rate, hydration products, and pore structure of the concrete containing different functional polycarboxylic acid superplasticizers were analyzed by means of mercury intrusion test, scanning electron microscopy (SEM), and X-ray diffraction (XRD).
Materials | Free Full-Text | Concrete Strengthening by
The review specifically concerns superplasticizers, latexes, redispersible powders, admixtures to enhance crack resistance, fibres and recycled polymers that can play the role of the additives in concrete-based composites.
- What is a superplasticizer in concrete?
- Superplasticizers (SPs) are essential components in the mix design of these concretes since they control their fresh properties and improve durability. In practice, superplasticizers are used to achieve a desired workability without increasing the water content by dispersing agglomerated cement particles.
- Do superplasticizers improve the fluidity of concrete?
- 5. Conclusions Superplasticizers are chemical additives that can significantly improve the fluidity of concrete. They work by reducing the surface tension between cement particles and water, thereby reducing the amount of water required to improve the workability of concrete.
- Why do we use specialized superplasticizers in RC?
- However, the unique properties of RC, such as the high water demand and short setting time, necessitate the use of specialized superplasticizers that are different from those used in ordinary Portland cement. As an important component for the application of RC, superplasticizer has an important impact on the performance modification of RC.
- How do superplasticizers work?
- They work by reducing the surface tension between cement particles and water, thereby reducing the amount of water required to improve the workability of concrete. The potential superplasticizers for RC have been reviewed, discussed, and compared in this paper.
- Do Superplasticizers have good dispersion properties?
- They found that superplasticizers with long side chains, short main chains, and high sulfonic acid density structures have good dispersion properties, and that the presence of high-density anionic functional groups in the structure can prolong the setting time of cement paste.
- Does superplasticizer affect performance modification of RC?
- As an important component for the application of RC, superplasticizer has an important impact on the performance modification of RC. This article summarizes the recent research progress of potential superplasticizers for RC, with a view to providing a reference for the research and application of superplasticizers for RC.
