Performance of 3rd Generation Locally Available Chemical
SCC produced was highly stable showing improvement in compressive strength by average of 30%. All this can be attributed to the long chain molecular structure of the Poly-Carboxylate Ether (PCE)in...
Overview studies of high strength self-consolidating concrete
Abstract and Figures. Self-Consolidating Concrete (SCC) is considered as a relatively new technology created as an effective solution to problems associated with low quality consolidation. A SCC
Self Consolidating Concrete - Sika
A BRIEF HISTORY OF SELF CONSOLIDATING CONCRETE SCC was developed in 1988 in Japan by Prof. Okamura and a team of academics at the University of Tokyo, in conjunction with major contractors. It is based on technologies used in underwater concrete placement. Test methods and procedures have been well established since its development.
Third generation super plasticizer (SPG) – ADMIKS
Third generation super plasticizer (SPG) Description The SPG-plasticizer combines varied mechanisms of influence. The effect is being achieved through the surface absorption and the cement grains repulsion effect. Advantages By simultaneously proceeding hydration process the concrete obtains the following properties:
Superplasticizer
Superplasticizers ( SPs ), also known as high range water reducers, are additives used in making high strength concrete. Plasticizers are chemical compounds that enable the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more.
- Can superplasticizers improve self-compacting concrete workability?
- Self-compacting concrete workability is usually ensured by the addition of superplasticizers in the mixture. The effects of some properties of superplasticizers have been investigated by many researchers.
- Does superplasticizer affect rheological and mechanical properties of concrete mixes?
- The concrete mixes contained eight different dosages of superplasticizer. The used rheology measurements are the slump flow, V-funnel, L-box, yield stress and plastic viscosity. The used mechanical tests are the compressive strength. The superplasticizer effect on these rheological and mechanical properties will be studied in more details.
- Does superplasticizer dry extract affect the mechanical behavior of self-compacting concretes?
- The superplasticizer dry extract content in the self-compacting concretes affects directly their mechanical behavior due to the adsorption phenomenon of superplasticizers (electrostatic and steric repulsion) as a consequence of changes in the cement hydration kinetics , , , , , , .
- What is the flow of superplasticizer on concrete?
- The flow of 0.5% superplasticizer on concrete is illustrated in Fig. 8.10. Concrete without this admixture appears stiff, while concrete containing the superplasticizer flows like a liquid . Figure 8.10. Effect of superplasticizer on concrete: (A) without superplasticizer and (B) with superplasticizer.
- Does organic material improve self-compacting concrete rheological and mechanical performance?
- The apparition of a wide generation of organic products (particularly the superplasticizers) increases significantly the range of rheological and mechanical performance of self-compacting concrete.
- What happens if a superplasticizer is added to concrete?
- When superplasticizers are added to concrete at the manufacturer’s recommended dosages, the compressive strengths and Young’s moduli of samples are equal to or greater than the corresponding compressive strengths and moduli of elasticity of samples cast from the normal mixture .
