Effect of Silica Fume and Super-Plasticizer on Mechanical
Secondly, the super-plasticizer (SP) is a chemical admixture and used for water-reducing, increase cohesiveness, improve passing and filling ability of SCC. However, SF affecting the physical...
Effect of Superplasticizer on Workability and Properties of Self
This research examined the effect of superplasticizer on workability and properties of self-compacting concrete (SCC). Three types of superplasticizers Conplast SP 561, Conplast SP 430 and...
Effect of Superplasticizer on Fresh and Hardened Properties of Concrete
In this paper "Effect of super plasticizers on fresh and hardened properties of concrete" [5] the author used super plasticizer as a chemical admixture in a varying dosage of 0%, 0.2%, 0.4%, 0.6%
Setting Time of Superplasticizer Concrete. - ResearchGate
According to Mohammed et al. (2016), concrete containing a coarse aggregate replacement of 10% glass waste and a superplasticizer of 0.8% obtains the highest compressive strength. Overdosing with...
Obtaining the optimal percentage of super plasticizer for HPC (M60
By the use of these super plasticizers we produce concrete of good workability even at lower water cement ratio. The present work was to obtain the optimal the optimal percentage of super plasticizer for producing M60 grade of concrete using normal ingredients. The super plasticizer was added at percentages of 1.5%, 1.3%, 1.1% and 0.9%.
- Does PCE superplasticizer adsorb in concrete?
- The adsorption of PCE superplasticizer in a concrete mix was found to be higher than in a cement paste mixed at 700 rpm with identical mixing time, W/C and dosage. However, the relative differences of adsorbed masses of the different PCEs measured in the cement paste correlated with the results from concrete.
- How does cement chemistry affect the dispersion efficiency of superplasticizers?
- Cement chemistry can affect the dispersion efficiency of superplasticizers in various ways. One of these is through the ionic composition of the aqueous phase and in particular through the amount of soluble sulfates. The milestone paper on this subject comes from Yamada and Hanehara (2001).
- Can superplasticizers be intercalated in early cement hydrates?
- But, superplasticizers like PNS or PCE can be intercalated in early cement hydrates (Flatt and Houst, 2001, Plank et al., 2006b) and we cannot distinguish between adsorbed and intercalated admixtures. What we measure is the sum of adsorbed and intercalated polymer.
- Why do you need A superplasticizer?
- They help to obtain concrete with higher tolerance to slight changes in the water content, and reduce bleeding and segregation if either superplasticizer is overdosed or the water content is too high.
- What is a PCE superplasticizer?
- This new class of superplasticizers has replaced the former generations of superplasticizers (PNS, PMS and the vinyl copolymers) in many applications. It was PCEs that really enabled the concept of self-consolidating concrete (SCC) to find its place in the market.
- Which polymers are used in polycarboxylate superplasticizers?
- Representation of the polymers used in two studies on polycarboxylate superplasticizers: left Winnefeld et at. (2007) and right Flatt et al. (2009a). The different domains are decorated chain (DC), flexible backbone worm (FBW), stretched backbone worm (SBW), stretched backbone star (SBS) and flexible backbone star (FBS).
