Evidences about the interactions between grinding aids and cement particles surface

Valerio Antonio  Paternò; Sara Ottoboni; Marco Goisis; Paolo Gronchi

Evidences about the interactions between grinding aids and cement particles surface

Valerio Antonio Paternò, Sara Ottoboni, Marco Goisis, Paolo Gronchi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

Abstract

The measure of wettability of cement particles and the evaluation of the type and the strength of active surface sites of clinker particles were carried out to score the efficacy of organic grinding aids. The first analysis, based on the Washburn method, allows measuring the contact angle of cement with different solvents and is directly relatedf to the surface tension. The second analysis, based on the Hammet method, helps to classify the sites that may be responsible of the surface tension. Milled clinker (Portland clinker CEM I 52.5R; 0.025% w/wo DEG and TEA) was investigated. Firstly the wetting rates of powder with 4 different solvents (ethanol, n-hexane, toluene and formamide) were detected using a tensiometer. Then the powder dispersions in a solvent were titrated by acid solutions to get information on the acid/basic characterof the surface sites. Techniques and results are shown.

Original language	English
Title of host publication	Eleventh International Conference on Superplasticizers and other Chemical Admixtures in Concrete
Subtitle of host publication	Ottawa, Ontario, Canada 10-13 July 2015
Editors	V. M. Malhotra, Pawan R. Gupta, Terence C. Holland
Place of Publication	Farmington Hills, MI
Pages	211-226
Number of pages	16
Publication status	Published - 31 Mar 2016
Event	11th International Conference on Superplasticizers and Other Chemical Admixtures in Concrete - Ottawa, Canada Duration: 10 Jul 2015 → 13 Jul 2015

Conference

Conference	11th International Conference on Superplasticizers and Other Chemical Admixtures in Concrete
Country	Canada
City	Ottawa
Period	10/07/15 → 13/07/15

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Paternò, V. A., Ottoboni, S., Goisis, M., & Gronchi, P. (2016). Evidences about the interactions between grinding aids and cement particles surface. In V. M. Malhotra, P. R. Gupta, & T. C. Holland (Eds.), Eleventh International Conference on Superplasticizers and other Chemical Admixtures in Concrete: Ottawa, Ontario, Canada 10-13 July 2015 (pp. 211-226). [SP-302-16] Farmington Hills, MI.

Paternò, Valerio Antonio ; Ottoboni, Sara ; Goisis, Marco ; Gronchi, Paolo. / Evidences about the interactions between grinding aids and cement particles surface. Eleventh International Conference on Superplasticizers and other Chemical Admixtures in Concrete: Ottawa, Ontario, Canada 10-13 July 2015. editor / V. M. Malhotra ; Pawan R. Gupta ; Terence C. Holland. Farmington Hills, MI, 2016. pp. 211-226

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title = "Evidences about the interactions between grinding aids and cement particles surface",

abstract = "The measure of wettability of cement particles and the evaluation of the type and the strength of active surface sites of clinker particles were carried out to score the efficacy of organic grinding aids. The first analysis, based on the Washburn method, allows measuring the contact angle of cement with different solvents and is directly relatedf to the surface tension. The second analysis, based on the Hammet method, helps to classify the sites that may be responsible of the surface tension. Milled clinker (Portland clinker CEM I 52.5R; 0.025{\%} w/wo DEG and TEA) was investigated. Firstly the wetting rates of powder with 4 different solvents (ethanol, n-hexane, toluene and formamide) were detected using a tensiometer. Then the powder dispersions in a solvent were titrated by acid solutions to get information on the acid/basic characterof the surface sites. Techniques and results are shown.",

author = "Patern{\`o}, {Valerio Antonio} and Sara Ottoboni and Marco Goisis and Paolo Gronchi",

year = "2016",

month = "3",

day = "31",

language = "English",

isbn = "9781510819788",

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Paternò, VA, Ottoboni, S, Goisis, M & Gronchi, P 2016, Evidences about the interactions between grinding aids and cement particles surface. in VM Malhotra, PR Gupta & TC Holland (eds), Eleventh International Conference on Superplasticizers and other Chemical Admixtures in Concrete: Ottawa, Ontario, Canada 10-13 July 2015., SP-302-16, Farmington Hills, MI, pp. 211-226, 11th International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Ottawa, Canada, 10/07/15.

Evidences about the interactions between grinding aids and cement particles surface. / Paternò, Valerio Antonio ; Ottoboni, Sara; Goisis, Marco; Gronchi, Paolo.

Eleventh International Conference on Superplasticizers and other Chemical Admixtures in Concrete: Ottawa, Ontario, Canada 10-13 July 2015. ed. / V. M. Malhotra; Pawan R. Gupta; Terence C. Holland. Farmington Hills, MI, 2016. p. 211-226 SP-302-16.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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N2 - The measure of wettability of cement particles and the evaluation of the type and the strength of active surface sites of clinker particles were carried out to score the efficacy of organic grinding aids. The first analysis, based on the Washburn method, allows measuring the contact angle of cement with different solvents and is directly relatedf to the surface tension. The second analysis, based on the Hammet method, helps to classify the sites that may be responsible of the surface tension. Milled clinker (Portland clinker CEM I 52.5R; 0.025% w/wo DEG and TEA) was investigated. Firstly the wetting rates of powder with 4 different solvents (ethanol, n-hexane, toluene and formamide) were detected using a tensiometer. Then the powder dispersions in a solvent were titrated by acid solutions to get information on the acid/basic characterof the surface sites. Techniques and results are shown.

AB - The measure of wettability of cement particles and the evaluation of the type and the strength of active surface sites of clinker particles were carried out to score the efficacy of organic grinding aids. The first analysis, based on the Washburn method, allows measuring the contact angle of cement with different solvents and is directly relatedf to the surface tension. The second analysis, based on the Hammet method, helps to classify the sites that may be responsible of the surface tension. Milled clinker (Portland clinker CEM I 52.5R; 0.025% w/wo DEG and TEA) was investigated. Firstly the wetting rates of powder with 4 different solvents (ethanol, n-hexane, toluene and formamide) were detected using a tensiometer. Then the powder dispersions in a solvent were titrated by acid solutions to get information on the acid/basic characterof the surface sites. Techniques and results are shown.

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