Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:3.4.23.17 (
PCE
)
1,301
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
This study compares the differences and similarities of two types of superplasticizers—
NSF
(Naphthalene Sulfonate Formaldehyde) and
PCE
(PolyCarboxylate Ester)—in fresh cement paste systems, in terms of adsorption, dynamic yield stress, and thixotropic index. Results show that with either
NSF
or
PCE
addition, the more superplasticizer is added, the more it is adsorbed and the more it remains in the interstitial pore solution. The dynamic yield stress and thixotropic index also decrease with increasing addition the amount of either superplasticizer. However,
NSF
is less efficient in decreasing the dynamic yield stress than
PCE
. More importantly, the decreasing patterns of dynamic yield stress and thixotropic index are different with
NSF
and
PCE
additions; this is tied to the adsorption and dispersing mechanisms of these two types of superplasticizers.
...
PMID:Different Effects of NSF and PCE Superplasticizer on Adsorption, Dynamic Yield Stress and Thixotropy of Cement Pastes. 2971 Jul 82
