Plasticizer and Superplasticizer Compatibility with Cement with
The problem of compatibility of superplasticizer and air-entraining admixture increases in case of multicomponent Portland cement, due to different effects of these additives. It comes down to achieving a compatibility of the three variables mentioned in the title of the paper, due to the required air entrainment and consistency of mixture.
Superplasticizer compatibility with cement properties – A study
There are extensive pieces of literature to suggest that the use of plasticizer and superplasticizer admixtures in the cementitious mix may reduce water demand by as much as 6.5 and 12–16%, and an increase in compressive strength by more than 10 and 15%, respectively [17], [18].
Study of the admixture-cement compatibility for the economic
It has been found that Polycarboxylate Ether (PCE) based superplasticizers show greater compatibility and economical dosage as compared to Sulphonated Napthalene Formaldehyde (SNF) based...
Plasticizer and Superplasticizer Compatibility with Cement with
Most of the available superplasticizers cause a significant increase of the air content of concrete mixtures. The problem of compatibility of superplasticizer and air-entraining admixture...
Influence of superplasticizer on strength of concrete - ResearchGate
Today super plasticizers are used in all important projects across the world in high raise buildings, pre-stressed concrete, slender components with congested and densely packed reinforcement,...
- How do superplasticizers affect the workability of concrete?
- Superplasticizers directly influence the workability of concrete, and certain factors are considered such as type of admixture, time of addition, addition sequence, mixing time, dosage, w/b ratio, and amount/nature of binder. The dosage between 0.6 to 2% by weight of cement resulted in minimal retardation.
- Why is superplasticizer incompatibility a problem?
- The cement–admixture (superplasticizer) incompatibility may affect both the fresh state and hardened properties of the cementitious mix - the main ones are rapid loss of workability, excessive quickening/retarding of setting times, low strength gain, excessive air entrainment, and increased risk of shrinkage with moderate cracking.
- Does superplasticizer affect mechanical development?
- Superplasticizer delays gel formation but does not affect the total heat released. Composites mechanical development is not affected by superplasticiser incorporation. Compressive strength of AAC drops 17% on average due to polycarboxylate presence. Polycarboxylate addition improves compactness, especially using Na 2 CO 3 as activator.
- Do superplasticizer and air-entraining admixture increase in multicomponent Portland cement?
- y of superplasticizer and air-entraining admixture increases in case of multicomponent Portland cement, due to different effects of these additives. It comes down to chieving a compatibility of the three variables mentioned in the title of the paper, due to the required air entrainment and consistency of mixture. Achieving
- Are superplasticizers compatible with air entraining admixture?
- of maintaining their correct aeration. Most of the available superplasticizers cause a significant increase of the air content of concrete mixtures. The problem of compatibili y of superplasticizer and air-entraining admixture increases in case of multicomponent Portland cement, due to different effects of these additives. It comes down to
- How does superplasticizer affect the flowability of a composite?
- The largest flowability is obtained by PCE with a disordered long chains structure. Superplasticizer delays gel formation but does not affect the total heat released. Composites mechanical development is not affected by superplasticiser incorporation. Compressive strength of AAC drops 17% on average due to polycarboxylate presence.
