Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 186, Issue -, Pages 652-659Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2018.07.056
Keywords
Natural hydraulic lime; Interfacial agent; Silica fume; Grouting; Bond strength
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Funding
- Beijing Municipal Science and Technology Project [Z151100002115035]
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Natural hydraulic lime (NHL) based grout has been widely used in construction project related to ancient architecture in recent decades. In order to improve grouting performance of NHL based grout, silica fume (SF) and silicon-acrylic latex (SAL) were incorporated in the preparation of grout. For the grout in fresh state, compared with control grout, bleeding rate of modified grout with SF and SAL incorporation decreased. Wettability, interfacial bond and simulated grouting properties of grout were improved. For the grout in hardened state, water absorption of grout decreased. Compactness, mechanical strength and salt resistance were improved. SAL played a more important role in improving both grout's flexural strength and interfacial bond property between grout and consolidated matrix. Generally, combined use of SF and SAL made the grout with the most beneficial grouting performance. (C) 2018 Elsevier Ltd. All rights reserved.
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