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Materials 2015, 8(9), 6257-6276; doi:10.3390/ma8095306

Material Performance and Animal Clinical Studies on Performance-Optimized Hwangtoh Mixed Mortar and Concrete to Evaluate Their Mechanical Properties and Health Benefits

1
Concrete Structural Engineering Laboratory, School of Civil and Environmental Engineering, Yonsei University, Seoul 120-794, Korea
2
Department of Architectural Engineering, Catholic Kwandong University, Gangneung 210-701, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Jorge de Brito
Received: 1 June 2015 / Revised: 6 September 2015 / Accepted: 8 September 2015 / Published: 17 September 2015
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Abstract

In this study, the amount of cement used in a concrete mix is minimized to reduce the toxic effects on users by adjusting the concrete mixture contents. The reduction of cement is achieved by using various admixtures (ground granulated blast-furnace slag, flyash, ordinary Portland cement, and activated Hwangtoh powder). To apply the mix to construction, material property tests such as compressive strength, slump, and pH are performed. Preliminary experimental results showed that the Hwangtoh concrete could be used as a healthy construction material. Also, the health issues and effects of Hwangtoh mortar are quantitatively evaluated through an animal clinical test. Mice are placed in Hwangtoh mortar and cement mortar cages to record their activity. For the test, five cages are made with Hwangtoh and ordinary Portland cement mortar floors, using Hwangtoh powder replacement ratios of 20%, 40%, 60%, and 80% of the normal cement mortar mixing ratio, and two cages are made with Hwangtoh mortar living quarters. The activity parameter measurements included weight, food intake, water intake, residential space selection, breeding activity, and aggression. The study results can be used to evaluate the benefits of using Hwangtoh as a cement replacing admixture for lifestyle, health and sustainability. View Full-Text
Keywords: Hwangtoh; health benefits; Institute for Cancer Research (ICR); material properties; mix proportion design Hwangtoh; health benefits; Institute for Cancer Research (ICR); material properties; mix proportion design
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Koo, B.-M.; Kim, J.-H.J.; Kim, T.-K.; Kim, B.-Y. Material Performance and Animal Clinical Studies on Performance-Optimized Hwangtoh Mixed Mortar and Concrete to Evaluate Their Mechanical Properties and Health Benefits. Materials 2015, 8, 6257-6276.

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