Effects of South African Silica Sand Properties on the Strength Development and Collapsibility of Single Component Sodium Silicate Binders

• Autorzy: Banganayi F. C. , Nyembwe K. , Polzin H.

Identyfikatory

DOI

10.1515/afe-2017-0081

• Języki publikacji: EN

Abstrakty

EN

This study shows the results of the investigation of the strength performance, and residual strength of a single component inorganic binder system Cast Clean S27®. The study was conducted using three different foundry sand sources in South Africa. Sample A is an alluvial coastal sample, sample B is an alluvial riverbed sample and Sample C is a blasted sample from a consolidated quartzite rock. The binder was also cured using three different curing mechanisms. The aim of the investigation was to determine the variation of strength performance and residual strength between the different South African sand sources based upon the physical and chemical properties of the sand sources. The moulding sand was prepared using three possible curing mechanisms which are carbon dioxide curing, ester curing and heat curing. The strength measurements were determined by bending strength. Sample A and sample C sand had good strength development. Sample B sand had inferior strength development and excellent high temperature residual strength. The study showed that the single component inorganic binders have good strength development and low residual strength. The silica sand properties have major contributing factors on both strength development and residual strength. The degree of influence of silica sand properties on strength performance and residual strength is dependent on the time of curing and method of curing.

Słowa kluczowe

EN

inorganic binders; sodium silicate; strength development; collapsibility

PL

spoiwo nieorganiczne; krzemian sodu; wytrzymałość spoiwa

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 3
• Strony: 5--12
• Opis fizyczny: Bibliogr. 15 poz., il., tab., wykr.

Twórcy

autor

Banganayi F. C.

• Metal Casting Technology Station, University of Johannesburg , 37 Nind street Doornfontein, Johannesburg, South Africa

autor

Nyembwe K.

• Department of Metallurgy, University of Johannesburg, 37 Nind street Doornfontein, Johannesburg, South Africa

autor

Polzin H.

• Technische Universität Bergakademie Freiberg/Gießerei-Institut Bernhard –von-Cotta-Strasse 4 Freiberg Germany

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)