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_aAIKTC-KRRC _cAIKTC-KRRC |
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_921337 _aManickam, Karthikeyan |
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245 | _aGrouting materials and practices for century-long corrosion protection of post-tensioned concrete bridges | ||
250 | _aVol.97(1), Jan | ||
260 |
_aMumbai _bACC LTD _c2023 |
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300 | _a6-20p. | ||
520 | _aTypically, the post-tensioned (PTd) concrete bridges have an anticipated design life or corrosion-free service life of 100+ years. This paper highlights some of the concerns associated with the grouts and grouting practices, which have resulted in a large inventory of inadequately grouted PTd systems. Then, the relevant material properties and associated performance tests to qualify post-tensioning (PT) grouts are discussed. An experimental program on the fluidity, bleed resistance, volume change, and compressive strength of three commercially available PT grouts and one in-house developed PT grout is presented. Then, a compilation of existing standard specifications for PT grouts is presented. Following this, a set of comprehensive, and stringent performance specifications for PT grouts–to enable complete filling of PT ducts–was proposed. Finally, good grouting practices to achieve century-long corrosion protection for PT systems are recommended. | ||
650 | 0 |
_94621 _aCivil Engineering |
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700 |
_921338 _aPillai, Radhakrishna G. |
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773 | 0 |
_dThane ACC Limited _x0019-4565 _tIndian Concrete Journal - ICJ |
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856 |
_uhttps://www.icjonline.com/editionabstract_detail/012023 _yClick here |
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_2ddc _cAR |