|Table of Contents|

Effect of Double Mineral Admixtures on Flexural Strength, Impact Strength and Impermeability of GRC Members at Different Ages(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2021年04期
Page:
118-126
Research Field:
Publishing date:

Info

Title:
Effect of Double Mineral Admixtures on Flexural Strength, Impact Strength and Impermeability of GRC Members at Different Ages
Author(s):
YU Lin1 WANG Xue-lei1 LI Jian-bo2 CHENG Kai1
(1. College of Mechanics and Materials, Hohai University, Nanjing 210098, Jiangsu, China; 2. Suning Real Estate Group Co., Ltd, Nanjing 210042, Jiangsu, China)
Keywords:
double mineral admixture GRC mechanical property impermeability microstructure
PACS:
TU501
DOI:
10.19815/j.jace.2020.10064
Abstract:
In practical engineering applications, glass fiber reinforced cement(GRC)specimens had some problems, such as surface microcracks, low strength and low toughness in humid environment. The accelerated aging method(50 ℃ hot water accelerated aging)was used to study the flexural strength, impact strength and impermeability of the GRC specimens with double mineral admixtures and modified universal silicon cement as the base material, and the erosion of the surface of the glass fiber mesh cloth of the GRC specimen was analyzed by scanning electron microscope. The results show that the best addition amount(mass fraction)to improve the impact strength of GRC specimen is 10% silica fume and 20% metakaolin under the accelerated aging of hot water at 50 ℃ or in the natural environment. The effect of double mixing 10% silica fume and 20% fly ash or 10% silica fume and 20% metakaolin on improving the bending strength is obvious. The impermeability of the GRC specimen with 20% fly ash and 20% metakaolin is excellent. The erosion degree of the glass fiber mesh is negatively related to the macroscopic mechanical properties, and a certain proportion of mineral admixtures can improve the corrosion resistance of the glass fiber mesh cloth and improve the microstructure of the interface zone, and the durability of the GRC specimen is greatly improved.

References:

[1] 王燕谋.中国玻璃纤维增强水泥[M].北京:中国建材工业出版社,2000.
WANG Yan-mou.China GRC[M].Beijing:China Building Materials Press,2000.
[2]王笑笛.玻璃纤维增强水泥基复合材料力学及吸声性能研究[D].哈尔滨:哈尔滨工程大学,2018.
WANG Xiao-di.Study on Mechanical Properties and Sound Absorption Properties of Glass Fiber Reinforced Cement-based Composites[D].Harbin:Harbin Engineering University,2018.
[3]赵 帅,李国忠,曹 杨,等.聚丙烯纤维和聚合物乳液对水泥砂浆性能的影响[J].建筑材料学报,2007,10(6):648-652.
ZHAO Shuai,LI Guo-zhong,CAO Yang,et al.Effect of Polypropylene Fiber and Polymer Emulsion on the Performance of Cement Mortar[J].Journal of Building Materials,2007,10(6):648-652.
[4]BARTOS P.Analysis of Pull-out Tests on Fibres Embedded in Brittle Matrices[J].Journal of Materials Science,1980,15:3122-3128.
[5]LAWS V,LANGLEY A A,WEST J M.The Glass Fibre/Cement Bond[J].Journal of Materials Science,1986,21(1):289-296.
[6]PURNELL P,BUCHANAN A J,SHORT N R,et al.Determination of Bond Strength in Glass Fibre Reinforced Cement Using Petrography and Image Analysis[J].Journal of Materials Science,2000,35(18):4653-4659.
[7]刘志成,崔 琪,李清海.不同维度玻璃纤维对GRC力学性能影响研究[J].混凝土与水泥制品,2015(5):46-49.
LIU Zhi-cheng,CUI Qi,LI Qing-hai.Effect of Different Dimensions of Glass Fiber on Mechanical Properties of GRC[J].China Concrete and Cement Products,2015(5):46-49.
[8]JGJ 63—2006,混凝土用水标准[S].
JGJ 63—2006,Standard of Water for Concrete[S].
[9]JC/T 841—2007,耐碱玻璃纤维网布[S].
JC/T 841—2007,Alkali-resistant Glass Fiber Mesh[S].
[10]GB 175—2007,通用硅酸盐水泥[S].
GB 175—2007,Common Portland Cement[S].
[11]GB/T 14684—2011,建设用砂[S].
GB/T 14684—2011,Sand for Construction[S].
[12]GB 8076—2008,混凝土外加剂[S].
GB 8076—2008,Concrete Admixtures[S].
[13]王厚义,曹颖骥.偏高岭土作高性能混凝土掺合料的研究进展[J].广东建材,2006(4):11-14.
WANG Hou-yi,CAO Ying-ji.Research Progress of Metakaolin as High Performance Concrete Admixture[J].Guangdong Building Materials,2006(4):11-14.
[14]陈益兰,赵亚妮,李 静,等.偏高岭土替代硅灰配制高性能混凝土[J].硅酸盐学报,2004,32(4):524-529.
CHEN Yi-lan,ZHAO Ya-ni,LI Jing,et al.High Performance Concrete with Metakaolin Mixed Replacing of Silica Fume[J].Journal of the Chinese Ceramic Society,2004,32(4):524-529.
[15]朱雪峰,张 朋,李清海,等.粉煤灰对3D玻璃纤维织物增强水泥基材料力学性能及耐久性影响的研究[J].新型建筑材料,2016(7):46-48,52.
ZHU Xue-feng,ZHANG Peng,LI Qing-hai,et al.Study of Fly Ash on Mechanical Properties and Durability of 3D Glass Fiber Fabric Reinforced Cement[J].New Building Materials,2016(7):46-48,52.
[16]杨 义,时圣金,童张法,等.大掺量混合材高性能混凝土的制备及强度特性[J].武汉理工大学学报,2007,29(11):21-24.
YANG Yi,SHI Sheng-jin,TONG Zhang-fa,et al.Preparation and Strength Property of High Performance Concrete with High Volume Mineral Admixture[J].Journal of Wuhan University of Technology,2007,29(11):21-24.
[17]李振国,刘 博,吴运强,等.碱式硫酸镁水泥耐酸腐蚀性能研究[J].材料导报,2018,32(16):2733-2737.
LI Zhen-guo,LIU Bo,WU Yun-qiang,et al.Research on Acid Corrosion Resistance Properties of Basic Magnesium Sulfate Cement[J].Materials Reports,2018,32(16):2733-2737.
[18]王 博.玻璃纤维增强碱式硫酸镁水泥板材性能研究[D].哈尔滨:哈尔滨理工大学,2019.
WANG Bo.Investigation on Properties of Glass Fiber Reinforced Basic Magnesium Sulfate Cement Plates[D].Harbin:Harbin University of Science and Technology,2019.
[19]GB/T 15231—2008,玻璃纤维增强水泥性能试验方法[S].
GB/T 15231—2008,Test Methods for the Properties of Glassfibre Reinforced Cement[S].
[20]SL 352—2006,水工混凝土试验规程[S].
SL 352—2006,Test Code for Hydraulic Concrete[S].

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Last Update: 2021-07-10