Effect of Mixing Process on the Performance of Recycled Aggregate Concrete
By: Lei, Guo
.
Contributor(s): Tianming, Zhao.
Publisher: Thane ACC LTD 2020Edition: Vol.94(1), Jan.Description: 58-65p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian Concrete Journal - ICJSummary: As recycled aggregate has a high water absorption rate, the traditional mixing process (TMP) is likely to create an area where cement hydration is inadequate near recycled aggregate, thus affecting the performance of recycled aggregate concrete. In this paper, to improve the performance of recycled aggregate concrete, a pre-mixing thick cement paste (PTCP) method is proposed via theoretical analysis and experimental verification. The PTCP method and TMP are compared to investigate the statistical distribution patterns of the 28-d compressive strength of recycled aggregate concrete. The results show that compared with the TMP, the PTCP method improves the 28-d compressive strength of recycled aggregate concrete by 7.8 - 15%. In addition, the PTCP method significantly improves the frost resistance of recycled aggregate concrete without changing the mixture ratio. This study provides technical reference for the recycled aggregate concrete mixing process.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
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Articles Abstract Database
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2021-2022300 |
As recycled aggregate has a high water absorption rate, the traditional mixing process (TMP) is likely to create an area where cement hydration is inadequate near recycled aggregate, thus affecting the performance of recycled aggregate concrete. In this paper, to improve the performance of recycled aggregate concrete, a pre-mixing thick cement paste (PTCP) method is proposed via theoretical analysis and experimental verification. The PTCP method and TMP are compared to investigate the statistical distribution patterns of the 28-d compressive strength of recycled aggregate concrete. The results show that compared with the TMP, the PTCP method improves the 28-d compressive strength of recycled aggregate concrete by 7.8 - 15%. In addition, the PTCP method significantly improves the frost resistance of recycled aggregate concrete without changing the mixture ratio. This study provides technical reference for the recycled aggregate concrete mixing process.
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