Version 1
: Received: 25 October 2019 / Approved: 27 October 2019 / Online: 27 October 2019 (16:07:52 CET)
How to cite:
Han, J.; Cho, J.; Kim, S.; Park, Y.; Lee, J. Mechanical Properties of Eco-friendly and Energy-saving Concrete with Porous Feldspar. Preprints2019, 2019100314
Han, J.; Cho, J.; Kim, S.; Park, Y.; Lee, J. Mechanical Properties of Eco-friendly and Energy-saving Concrete with Porous Feldspar. Preprints 2019, 2019100314
Han, J.; Cho, J.; Kim, S.; Park, Y.; Lee, J. Mechanical Properties of Eco-friendly and Energy-saving Concrete with Porous Feldspar. Preprints2019, 2019100314
APA Style
Han, J., Cho, J., Kim, S., Park, Y., & Lee, J. (2019). Mechanical Properties of Eco-friendly and Energy-saving Concrete with Porous Feldspar. Preprints. https://doi.org/
Chicago/Turabian Style
Han, J., Yun-Suk Park and Jong-Young Lee. 2019 "Mechanical Properties of Eco-friendly and Energy-saving Concrete with Porous Feldspar" Preprints. https://doi.org/
Abstract
In this study, to reduce the use of cement and sand, porous feldspar with excellent economic efficiency was used as a substitute in heat storage concrete layer. When cement was replaced with porous feldspar, the compressive strength was approximately 16%–63% higher compared with when cement was replaced with silicate minerals. To compensate for the reduction in strength owing to the decreased cement content, mechanical and chemical activation methods were employed. When the specific surface area of porous feldspar was increased, the unit weight was reduced by approximately 30% and the compressive strength was increased by up to 90%. When chemical activation was applied using a solidifying agent, the strength was increased by approximately 30% even though 70% of the cement content was replaced with porous feldspar. When cement and sand were replaced with porous feldspar, the compressive strength was approximately two times that of ordinary cement mortar. When the heat storage concrete layer material was replaced with porous feldspar in a pilot scale experiment, the thermal conductivity and heat storage characteristics were better than those of ordinary cement mortar, and an energy-saving effect of approximately 57% was observed, confirming the excellent applicability of porous feldspar as a building material.
Keywords
porous feldspar; activation; compressive strength; substitute material; energy saving concrete
Subject
Engineering, Civil Engineering
Copyright:
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.