Superplasticizer compatibility with cement properties – A study
Our paper reports the addition of high performing superplasticizer -Poly Carboxylate Ether in cement composites as per Indian Standards has resulted in a denser cementitious matrix and higher...
Cement and Superplasticizer Combinations: Compatibility and
The C 3 A content, the soluble (alkali) sulphate content, and the fineness of the cement, which influence the adsorption rate of the superplasticizers on the cement particles, are among the key factors that control the compatibility and the robustness of cement-superplasticizer combinations, especially for polysulfonated admixtures. Based on
Cement-superplasticiser compatibility - Issues and challenges
The effect of water to cement (w/c) ratio on the compatibility of polycarboxylate superplasticizer (PCE) with ordinary Portland cement was investigated through multiple experiments, including mini
CEMENT AND SUPERPLASTICIZER COMBINATIONS: COMPATIBILITY AND
The authors conclude that a rough prediction of the compatibility and robustness of cements and superplasticizers could be made by analyzing the chemical composition of the cement and the chemical nature of the superplasticizer. This paper was presented at a symposium on cement-admixture interactions (December 2003, Tampa, Florida). Availability:
Cement - Superplasticizer Compatibility - The Concrete Portal
Compatibility between cements and superplasticizers is affected by a combination of reasons, including cement composition, admixture type and dosage, concrete mixture proportions etc. Atcin [1998] describes the complicated nature of the interaction using the schematic diagram shown in Figure 2.
- Which type of superplasticizer is best for concrete production?
- Thus, theAP type superplasticizers (and also PC type superplasticizers) are particularly suitable for production of concretes with low W / C as HPC or self-compacting concretes (SCC) (high plastic viscosity due to superplasticizer addition is in this case very advantageous).
- What is a superplasticizer in cement mix?
- Superplasticizers (SP) are one of the most important constituents of cement cementitious mix mixes. It makes cementitious mix flowable at a low water-cement ratio without segregation and bleeding as required for high-performance concrete .
- What is superplasticizer compatibility?
- The first moment consumption of Superplasticizer molecules after the mixing is qualified as the cement/Superplasticizer compatibility. It is very difficult to make high-performance concrete with a very low water-cement ratio, that it will still have a slump value of 50mm 30 minutes with an initial slump value of 200mm.
- Do superplasticizers increase the workability of concrete?
- Admixtures known as superplasticizers may greatly increase the workability of concrete or greatly reduce its water content. Test data, although limited and inconclusive, found superplasticizers to increase slump without segregation. Freeze-thaw durability and compressive strengths compare favorably to the controls. Further investigation is needed.
- Why are superplasticizers used in Indian cementitious mix?
- Superplasticizers are increasingly being used in Indian cementitious mix from the 1980 s onwards as they have proved their credibility in parameters like water and cement reduction apart from workability retention, strength gain, and ease to place and pump.
- Can superplasticizers be used as model HPC concrete?
- The performance of superplasticizers was investigated using standard mortars (PN EN 196) thatcan be considered to be model HPC concrete , .
