Title:
Influence of Sample Preparation and Salt Concentration on the Superplasticizer Adsorption Quantification in Cement-Based
Pore Solutions by Total Organic Carbon (TOC) Method
Author(s):
G. Albrecht and M. Vierle
Publication:
Symposium Paper
Volume:
262
Issue:
Appears on pages(s):
321-334
Keywords:
adsorption; aggregates; superplasticizers; total organic carbon (TOC).
DOI:
10.14359/51663242
Date:
10/1/2009
Abstract:
Total Organic Carbon (TOC) measurement of cementitious pore solutions
for quantification of (super)plasticizer adsorption was reviewed in this study with a system of two Polycarboxylate Ethers (PCE) and one Naphtalene Sulfonate polymer (BNS) in combination with 3 different cements. The influence of pore solution salt concentrations as well as different methods for pore solution extraction on the measured amount total organic carbon have been investigated. Adsorption measurements in paste, mortar and concrete systems are compared and conclusions are drawn by summarizing and interpreting the results obtained in the studies.