Properties and composition of concrete containing diverse pozzolanic admixtures

Shakhmenko, G., Riga Technical Univ. . Faculty of Civil Engineering. Inst. of Materials and Structures; Bajare, D., Riga Technical Univ. . Faculty of Civil Engineering. Inst. of Materials and Structures; Juhnevica, I., Riga Technical Univ. . Faculty of Material Science and Applied Chemistry. Inst. of Silicate Materials; Toropovs, N., Riga Technical Univ. . Faculty of Civil Engineering. Inst. of Materials and Structures; Justs, J., Riga Technical Univ. . Faculty of Civil Engineering. Inst. of Materials and Structures; Gabrabe, J., Riga Technical Univ. . Faculty of Material Science and Applied Chemistry. Inst. of Silicate Materials

Properties and composition of concrete containing diverse pozzolanic admixtures

2013

Shakhmenko, G., Riga Technical Univ. (Latvia). Faculty of Civil Engineering. Inst. of Materials and Structures | Bajare, D., Riga Technical Univ. (Latvia). Faculty of Civil Engineering. Inst. of Materials and Structures | Juhnevica, I., Riga Technical Univ. (Latvia). Faculty of Material Science and Applied Chemistry. Inst. of Silicate Materials | Toropovs, N., Riga Technical Univ. (Latvia). Faculty of Civil Engineering. Inst. of Materials and Structures | Justs, J., Riga Technical Univ. (Latvia). Faculty of Civil Engineering. Inst. of Materials and Structures | Gabrabe, J., Riga Technical Univ. (Latvia). Faculty of Material Science and Applied Chemistry. Inst. of Silicate Materials

Micro-sized particles are used in modern concrete technology as a part of multi-component cementitious systems. Adding of micro-filler admixtures improves the properties of both fresh and hardened concrete. Local and commercially available micro-fillers were used in this research: dolomite powder, microsilica, calcined local (illite) clay and calcined kaolinite clay. Firstly, the basic micro-filler properties were studied, such as particle size distribution, particle morphology, specific surface and content of reactive components. The second experimental part covered production of fine-grained mixes, sample curing and testing. Compressive strength and water absorption were tested. Mineral formation processes were investigated using X-Ray analysis and IR spectroscopy. As a result, it is concluded that the main factors, which determine the effectiveness of admixture, are pozzolanic reactivity, particle grading and morphology. The most effective fillers in this research were silica fume and calcinated kaolinite clay. Results for dolomite fillers were the same as for the inert fillers. Addition of local calcined illite clay improved tested concrete properties; consequently other locally available clay materials should be investigated more specifically as potential pozzolanic materials in future.

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Mots clés AGROVOC

arcilla argile beton caolinita chemical composition chemicophysical properties clay composition chimique concrete dolomie dolomita dolomite espectroscopia experimentation illites kaolinite latvia letonia lettonie minerales minerals new technology nouvelle technologie polvos (formulaciones) poudre powders rayon x recherche research silica silice spectroscopie spectroscopy strength water holding capacity x rays

Informations bibliographiques

Publié dans

Civil Engineering. International Scientific Conference. Proceedings (Latvia)

Volume 4 ISSN 2255-7776

Editeur

Latvia University of Agriculture

Pagination

p. 122-128

D'autres materias

Mineraux; Hormigon; Investigacion; Resistencia mecanica; Composicion quimica; Propriete physicochimique; Capacidad de retencion de agua; Rayos-x; Resistance mecanique; Propiedades fisicoquimicas; Experimentacion; Tecnologia nueva; Capacite de retention d'eau

Langue

anglais

Note

Summary (En)

3 tables, 8 fig., 16 ref.

Type

Conference; Summary; Ams

Source

Civil Engineering '13. 4st International Scientific Conference. Proceedings. Part 1, Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Rural Engineering. Dept. of Architecture and Building. Dept. of Structural Engineering.- Jelgava (Latvia): Latvia University of Agriculture, 2013. International Scientific Conference: Civil Engineering, 4, Jelgava (Latvia), 16-17 May 2013.- p. 122-128

Conférence

International Scientific Conference: Civil Engineering, 4, Jelgava (Latvia), 16-17 May 2013

Sur AGRIS depuis: 2014-06-15

Format: AGRIS AP

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Cette notice bibliographique a été fournie par Fundamental Library of Latvia University of Life Sciences and Technologies

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Liens

http://llufb.llu.lv/conference/Civil_engineering/2013/partI/Latvia_CivilEngineering2013Vol4PartI.pdf

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