Adsorption of plasticizers – Influence of plasticizer and
superplasticizer than SNF and LS and many cement pastes segregated even at low polyacrylate dosages when the w/c was set to 0.40. Cement pastes were therefore produced with w/c ratio in the region 0.30-0.40 in order to achieve stability. Pore water was filtrated from the pastes as described above, but this time filtrations were done
studies on compatibility issues of super plasticizers with
a SNF based Super plasticizer. The water - cement ratio is considered are 0.35 and 0.4. The dosage of Super Plasticizer (Master Glenium ACE 30) started from 0.6% to 1.4% with respect to cement.
Superplasticizer: Types, Advantages & Disadvantages
Superplasticizers (SPs) are also known as high- range water reducers that are additive used in making high strength concrete. Plasticizers are chemical compounds that enable the production of concrete with approximately 15% less water content. Superplasticizers allow a 30% or more reduction in water content.
Mix Design With Superplasticizers - Civil Engineering Portal
From trials also it is found that Normal Super plasticizer at a dosages of 21gm/kg of cement may reduce 28% water without loss of workability. Then water = 190 – (190 x 0.28) = 136.8 kg/m 3 for trials say 137 kg/m 3. c) PPC = 137/0.39 = 351 kg/m 3 This is lower than minimum requirement of 360 kg/m 3. Then take 360 kg/m 3. Then W/C = 137/360
Indian Journal of Science and Technology, DOI: 10.17485/ijst
est is called the saturation point(i.e. super-plasticizer has no further plasticizing effect)7,8. The optimum dosages of super-plasticizer SNF and PCE for cement blended with and without flyash are presented in Figure 1 and 2 respec-tively. The results show that the optimum dosage of SNF and PCE based super-plasticizer for the combination of
- What is the optimum dosage of SNF super plasticizer?
- The optimum dosage of SNF Super Plasticizer is 0.5 and 25% water reduction from the analysis and it is used to determine the strength results of the Perlite added concrete at a replacement percentage of 10, 15, 20 and 25% (from Table 4; Fig. 1).
- What is the maximum strength of SNF super plasticizer (Sikament 2002 NS)?
- At a dosage of 0.5% of SNF super plasticizer (Sikament 2002 NS) and 25% water reduction, maximum strength achieved. At 0.6% of PCE super plasticizer (C Flow 175 M) and 25% water reduction all the strength parameters reached peak value.
- Why does SNF Based super plasticizer have high fluidity?
- SNF-based super plasticizer possesses high fluidity due to reduced monomer and increased molecular weight. Retardation of the cement hydration depends on the molecular weight where the higher the molecular weight, higher the retardation [65, 66].
- Which superplasticizer admixture is better?
- Based on the findings, out of three superplasticizers, PC—based admixture showed a better improvement in strength aspects compared to other mix. Compressive strength of UHPC (a) SNF admixture (b) SMF admixture (c) PC admixture
- What is the maximum tensile strength of a superplasticizer?
- The maximum split tensile strength at 28 days of testing for all cases was found to be 29.09 MPa—SNF based, 30.72 MPa—SMF based, and 31.23 MPa—PC-based admixture, respectively, at 1.5% of dosage (Fig. 6). Therefore, the effect of superplasticizers mainly influences the workability of concrete rather mechanical properties.
- Which superplasticiser is best for the GPC?
- After the comprehensive survey, the references conclude that the best superplasticiser for the GPC are SNF based because the comprehensive survey authors define the PCE based superplasticisers increases the workability of the GPC but the reduction of the strength at a very high level.
