In:
Journal of the Korean Society of Hazard Mitigation, Korean Society of Hazard Mitigation, Vol. 21, No. 6 ( 2021-12-31), p. 1-7
Abstract:
Shotcrete should be attached to the ground and should have stable strength for a long-term. It should develop strength earlier for rapid work. Therefore, in this study, three types of accelerators—aluminate, cement mineral, and alkali-free—were selected and mixed to secure the initial strength. Depending on the type and mixing rate of each accelerator, slump, air amount, and compressive strength were used to evaluate the basic properties, boiling water absorption test, and chloride ion penetration resistance to conduct durability analysis. The mixing of aluminate-based and cement-mineral-based accelerators was effective in improving the initial strength, and alkali-free accelerator was effective in improving the long-term strength. The mixture to which accelerators were not mixed showed the highest water-tightness.
Type of Medium:
Online Resource
ISSN:
1738-2424
,
2287-6723
DOI:
10.9798/KOSHAM.2021.21.6.1
Language:
English
Publisher:
Korean Society of Hazard Mitigation
Publication Date:
2021
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