Influence of Stearic Acid on Portland Cement Performance as Grinding Aids

Hao Xin Li; Jian Sen Yang; Hong Bo Zhu

doi:10.4028/www.scientific.net/AMR.374-377.1244

Paper Titles

Two-Scale Algorithm for Computing the Approximation of the Displacement in Periodic Perforated Structure of Composites
p.1226

Effect of Fly Ash and Slag Powder on Coefficient of Thermal Expansion of Concrete
p.1230

Effects of Modified Gypsum on Autoclaved Products Strength
p.1235

Study on the Bending Mechanical Properties of Bamboo Plywood Used Middle Temperature PF Resine
p.1239

Influence of Stearic Acid on Portland Cement Performance as Grinding Aids
p.1244

Design and Analysis of the Support System for Cement-Base Formwork
p.1249

Effective Factors on Eco Labeling Building-Construction, Materials and Components
p.1254

Study on Preparation of Sintered Thermal Insulation Wall Material by High Addition Fly Ash
p.1258

The Depreciation Method of Construction Machinery Based on Gray Relational Theory
p.1265

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 374-377Influence of Stearic Acid on Portland Cement...

Influence of Stearic Acid on Portland Cement Performance as Grinding Aids

Abstract:

Different contents of stearic acid were added to mixtures, and the influences of stearic acid as grinding aids on portland cement performances, including specific surface, compressive strength, hydration heat, Ca(OH)2 (CH) content, C-S-H gel and ettringite (AFT) content were discussed in this paper. The results show that the addition of small amount of stearic acid is enough, and excessive addition of stearic acid is not a good matter to cement grinding. Adding a small amount of stearic acid, not only don’t improve the compressive strength, but also lower the compressive strength significantly. Although the specific surface of samples with 0.1% stearic acid is lower than that of the samples with 0.025% stearic acid and reference, the compressive strength appears of higher than others. Addition of stearic acid affects not only on the rate of heat liberation, but also the hydration heat significantly. The addition of stearic acid has uncommonly impact on the content of CH, C-S-H and AFT in cement paste at 3 days, 7days and 28 days hydration age, the samples with 0.1% stearic acid has higher content of CH, C-S-H and AFT than others, and lower conversion content of AFT from 3days to 7days and 7days to 28 days. This can explain why the cement with 0.1% stearic acid is provided with the higher compressive strength than others, from the perspective of hydration production composition.

You might also be interested in these eBooks

Sustainable Development of Urban Environment and Building Material

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Pages:

1244-1248

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.374-377.1244

Citation:

Cite this paper

Online since:

October 2011

Authors:

Hao Xin Li, Jian Sen Yang, Hong Bo Zhu

Keywords:

AFT, Cement, CH, C-S-H, Stearic Acid

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Teoreanu I, Guslicov G. Mechanism and effects of additives from the dihydroxy-compound class on Portland cement grinding. Cem. Concr. Res. 1999, 28(9):9～15.

DOI: 10.1016/s0008-8846(98)00180-x

Google Scholar

[2] M.Katsioti, P. E. Tsakiridis, P.Giannatos. Characterization of various cement grinding aids and their impact on gindability and cement performance. Construction and building materials. 2009, 23(5):1954～1959.

DOI: 10.1016/j.conbuildmat.2008.09.003

Google Scholar

[3] P.B. Rajendran Nair, R. Paramasivam. An analysis of the influence of grinding aids on the breakage process of calcite in media mills. Advanced Powder Technology. 1999,10(3):223～243.

DOI: 10.1163/156855299x00316

Google Scholar

[4] A. A. Jeknavorian, E. F. Barry, F. Serafin. Determination of grinding aids in portland cement by pyrolysis gas chromatography-mass spectrometry. Cem. Concr. Res.1998,28(9):1335～1345.

DOI: 10.1016/s0008-8846(98)00109-4

Google Scholar

[5] Heekyu Choi, Woong Lee, Seongsoo Kim. Effect of grinding aids on the kinetics of fine grinding energy consumed of calcite powders by a stirred ball mill. Advanced Powder Technology, 2009, 20(4):350～354.

DOI: 10.1016/j.apt.2009.01.002

Google Scholar

[6] Ali Tugrul, Albayrak, Muzaffer Yasar. Investigation of the effects of fatty acids on the compressive strength of the concrete and the grindability of the cement. Cem. Concr. Res. 2005; 35(2): 400～404.

DOI: 10.1016/j.cemconres.2004.07.031

Google Scholar