TRMETHYLSILYLATION AS A TOOL FOR THE STUDY OF CEMENT PASTES .2. QUANTITATIVE-ANALYSIS OF THE SILICATE FRACTION OF PORTLAND-CEMENT PASTES

被引：16

作者：

LACHOWSKI, EE

机构：

[1] Department of Chemistry, University of Aberdeen, Old Aberdeen, AB9 2UE Scotland, Meston Walk

来源：

CEMENT AND CONCRETE RESEARCH | 1979年 / 9卷 / 03期

关键词：

D O I：

10.1016/0008-8846(79)90126-1

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The trimethylsilyl derivatives of the silicate fractions of three fully hydrated Portland cement pastes have been studied by gas-liquid and gel-permeation chromatography. The pastes had 9-11% of the silica as monomer, 22-30% as dimer and 44-57% as polysilicate. Gel-permeation chromatograms of the polysilicate derivatives all had maxima corresponding to a degree of polymerisation (dp) of about 4 and shoulders at higher values; the weight average dp's were 14-17 and although the maximum dp's were high, only about 2% of the silica had dp's greater than 50. The mean connectivity of the polysilicates was 2.3. © 1979.

引用

页码：337 / 342

页数：6

共 8 条

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