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采用预制纺织物增强混凝土面板和灌浆材料对混凝土构件进行加固

Strengthening of Concrete Element with Precast Textile Reinforced Concrete Panel and Grouting Material.

作者信息

You Young-Jun, Kim Hyeong-Yeol, Ryu Gum-Sung, Koh Kyung-Taek, Ahn Gi-Hong, Kang Se-Hoon

机构信息

Structural Engineering Department, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, Korea.

出版信息

Materials (Basel). 2020 Sep 1;13(17):3856. doi: 10.3390/ma13173856.

DOI:10.3390/ma13173856
PMID:32882895
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7504188/
Abstract

Textile reinforced concrete (TRC) has widely been used for strengthening work for deteriorated reinforced concrete (RC) structures. The structural strengthening often requires accelerated construction with the aid of precast or prefabricated elements. This study presents an innovative method to strengthen an RC slab-type element in flexure using a precast panel made of carbon TRC. A total of five RC slabs were fabricated to examine the flexural strengthening effect. Two of them were strengthened with the precast panel and grouting material and another set of two slabs was additionally strengthened by tensile steel reinforcement. The full-scale slab specimens were tested by a three-point bending test and the test results were compared with the theoretical solutions. The results revealed that the ultimate load of the specimens strengthened with the TRC panel increased by at least 1.5 times compared to that of the unstrengthened specimen. The application of the precast TRC panel and grouting material for the strengthening of a prototype RC structure verified its outstanding constructability.

摘要

纺织纤维增强混凝土（TRC）已广泛应用于既有钢筋混凝土（RC）结构的加固工程。结构加固通常需要借助预制或装配式构件来加快施工进度。本研究提出了一种创新方法，使用由碳纤维TRC制成的预制板对RC板类构件进行抗弯加固。总共制作了五块RC板以检验抗弯加固效果。其中两块用预制板和灌浆材料进行加固，另外两块板还额外配置了抗拉钢筋进行加固。对足尺板试件进行了三点弯曲试验，并将试验结果与理论解进行了比较。结果表明，与未加固试件相比，用TRC板加固的试件极限荷载至少提高了1.5倍。预制TRC板和灌浆材料在原型RC结构加固中的应用验证了其卓越的可施工性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/23ce4a3164b8/materials-13-03856-g015.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/047942139f1a/materials-13-03856-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/e9af3dbcda8a/materials-13-03856-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/cc34911c20f6/materials-13-03856-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/22966e5b46e2/materials-13-03856-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/d401d5679ab9/materials-13-03856-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/10a1636f2d30/materials-13-03856-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/53060ba553c8/materials-13-03856-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/3ebb55a65805/materials-13-03856-g007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/047942139f1a/materials-13-03856-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/e9af3dbcda8a/materials-13-03856-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/cc34911c20f6/materials-13-03856-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/0a855c402bad/materials-13-03856-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/813f/7504188/23ce4a3164b8/materials-13-03856-g015.jpg

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