Mechanical Property Research for Recycled Concrete Injected with Self-Compacting Mortar
- DOI
- 10.2991/icmse-16.2016.34How to use a DOI?
- Keywords
- Recycled concrete, Self-compacting mortar, Aggregate property, Compressive strength
- Abstract
Due to the poor workability of recycled concrete caused by heavy water absorption, coarse surface and multiple spaces of recycled coarse aggregate, it is proposed that pre-allocated self-compacting mortar shall be adopted to prepare recycled concrete, which solves such problems arising from poor workability of concrete. The recycled concrete (hereinafter referred to as RC) prepared by this method are provided with such properties as rapid hardening and early strength. Its compressive strength can reach above 20MPa for 2h and above 40MPa for 28d. Researches show that when actual Water-Dry mix mortar ratio is 0.18, the compressive strength development trend of recycled concrete is consistent with that of self-compacting mortar. But the strength development of natural concrete (hereinafter referred to as NC) is delayed to certain degree, compared with that of self-compacting mortar. When actual water-Dry mix mortar ratio is 0.20 and 0.22, the early strength of concrete is higher than that of self-compacting mortar, while its later strength is lower than self-compacting mortar. RC compressive strength is lower 4%-15% than NC approximately, but it may be higher 0.56%-8.5% than RC without regard to the added water consumption of recycled coarse aggregate.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Guo-Chen Sang AU - Li Cui AU - Xiao-Gen Tong AU - Yi-Yun Zhu AU - Qin Zhao PY - 2016/12 DA - 2016/12 TI - Mechanical Property Research for Recycled Concrete Injected with Self-Compacting Mortar BT - Proceedings of the 4th 2016 International Conference on Material Science and Engineering (ICMSE 2016) PB - Atlantis Press SP - 202 EP - 208 SN - 2352-5401 UR - https://doi.org/10.2991/icmse-16.2016.34 DO - 10.2991/icmse-16.2016.34 ID - Sang2016/12 ER -