|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.17 [2010] >
IJEMS Vol.17(1) [February 2010] >
| Title: | Effects of SNF and LS superplasticizer on cement paste using electrical measurement |
| Authors: | Zeng, Xiaohui
Sui, Tongbo |
| Keywords: | Cement
Electrical resistivity
Superplasticizer
Fluidity
Adsorption
Dissolution |
| Issue Date: | Feb-2010 |
| Publisher: | CSIR |
| Abstract: | A non-contact electrical
resistivity measurement is used to study the effects of sulfonated naphthalene
formaldehyde condensates (SNF) and lignosulphonate (LS) superplasticizers on
cement paste. Other experiments like fluidity test and test of the amount of
superplasticizer adsorbed on cement particles are also carried out. Results
show that SNF superplasticizer has different effects on the resistivity of
cement pastes comparing with LS superplasticizer. The plot of initial
resistivity versus SNF dosage can be divided into 4 zones. Each zone reflects
the characteristics of SNF as a superplasticizer of cement paste, respectively.
The curves of the resistivity developing with time; ρ(t), and their derivatives; dρ(t)/dt(t),
have distinct changes when the dosages of SNF and LS superplasticizer are high.
Electrical method is potentially a very useful method in concrete designing. |
| Page(s): | 27-33 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.17(1) [February 2010]
|
|
