Reuse of coal mining waste to lengthen the service life of cementitious matrices
A chloride-induced accelerated corrosion test was conducted on steel bars embedded in mortar specimensprepared with thermally activated coal mining waste (ACMW). ACMW was observed to prompt two oppositeeffects: a delay in chloride ion penetration and a reduction in the critical chloride content need...
| Authors: | , , , , |
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| Format: | article |
| Status: | Versión enviada para evaluación y publicación |
| Publication Date: | 2019 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/185290 |
| Online Access: | http://hdl.handle.net/10261/185290 |
| Access Level: | Open access |
| Keyword: | Coal mining waste Corrosion |
| Summary: | A chloride-induced accelerated corrosion test was conducted on steel bars embedded in mortar specimensprepared with thermally activated coal mining waste (ACMW). ACMW was observed to prompt two oppositeeffects: a delay in chloride ion penetration and a reduction in the critical chloride content needed to initiatecorrosion. Service life predictions based on thefindings revealed that adding 20% or 50% ACMW to cementimproved reinforcement corrosion resistance. Optimal results were observed for 20% replacement, in which themean reinforcement section loss was 21% lower than in OPC |
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