Publication detail

Comparison of separate and co-grinding of the blended cements with the pozzolanic component

DVOŘÁK, K. DOLÁK, D. DOČKAL, J.

Original Title

Comparison of separate and co-grinding of the blended cements with the pozzolanic component

Type

conference paper

Language

English

Original Abstract

The main difference between separate and co-grinding of blended cement is the fact that co-grinding occurs interaction among the milled components. These interactions may speed up milling process, or on the contrary to slow it down. It depends on grindability of the components. Separate grinding and subsequent homogenization is more common. High speed disintegrator appears to be a promising technology for the homogenization of blended cements after separate milling process in traditional mills, which can be associated with final grinding. The aim of the work was to compare the effect of separate and co-grinding, and their combinations on the properties of the blended cement. At first the samples of pure glass, pure Portland cement and its mixture were pre-ground in the ball mill to the specific surface area of 400 m2/kg according to Blaine. The material was subsequently ground either in a ball mill or disintegrator by the various combinations of separate or co-grinding. All the samples were subjected to granulometric and morphological analysis and the analysis of the technological properties. In the case of the combination of cement and glass the co-grinding appeared to be more advantageous than the separate grinding with homogenization. The high speed disintegrator has produced sharp-edged grains with narrower particle size distribution curve than traditional ball mill. Technological properties of the cement have been also influenced by high speed disintegrator. Compressive strength in early age was higher than in the case of ball mill type cement, however, the final strength were essentially the same.

Keywords

High speed grinding; separate grinding; co-grinding

Authors

DVOŘÁK, K.; DOLÁK, D.; DOČKAL, J.

Released

3. 8. 2016

Publisher

Elsevier

Location

Nizozemsko

ISBN

978-1-5108-2855-1

Book

Procedia Engineering

ISBN

1877-7058

Periodical

Procedia Engineering

Year of study

151

Number

1

State

Kingdom of the Netherlands

Pages from

66

Pages to

72

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S1877705816317647

Full text in the Digital Library

http://hdl.handle.net/11012/204191

BibTex

@inproceedings{BUT127103,
  author="Karel {Dvořák} and Dušan {Dolák} and Jakub {Dočkal}",
  title="Comparison of separate and co-grinding of the blended cements with the pozzolanic component",
  booktitle="Procedia Engineering",
  year="2016",
  journal="Procedia Engineering",
  volume="151",
  number="1",
  pages="66--72",
  publisher="Elsevier",
  address="Nizozemsko",
  doi="10.1016/j.proeng.2016.07.376",
  isbn="978-1-5108-2855-1",
  issn="1877-7058",
  url="https://www.sciencedirect.com/science/article/pii/S1877705816317647"
}