Jian-Guo Dai
Hong Kong Polytechnic University
DurabilityUltimate tensile strengthEngineeringMortarFinite element methodComposite materialFlexural strengthMaterials scienceCorrosionChlorideStiffnessGeopolymerReinforced concreteCompressive strengthChemical engineeringFiberCementStructural engineeringBondFibre-reinforced plastic
249Publications
34H-index
4,133Citations
Publications 228
Newest
#1Ling Yu Xu (PolyU: Hong Kong Polytechnic University)
#1Lingyu Xu (PolyU: Hong Kong Polytechnic University)H-Index: 6
Last. Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
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Abstract null null Developing geopolymer lightweight aggregates (GLAs) is explored in this study through crushing technique, which has a good prospect for massive industrial production. Geopolymer cubes with the dimension of 100 mm × 100 mm × 100 mm were firstly produced using one-part geopolymer technology and then crushed into coarse aggregates with angular shapes. Coal fly ash (FA), ground granulated blast-furnace slag (GGBS) and anhydrous sodium metasilicate particles in industrial grades we...
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#1Zhuolin Wang (Tongji University)H-Index: 7
#2Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
Last. Qingfeng Xu (Tongji University)H-Index: 8
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Abstract null null This paper presents the results from a comparative study on the residual bond performance of epoxy and cement-bonded carbon fiber-reinforced polymer (CFRP) reinforcement to concrete interfaces that experienced different levels of elevated temperature exposure. In total twelve groups of concrete beams strengthened with CFRP sheet and grids of the same tensile stiffness, through epoxy and cement-based adhesive bonding, respectively, were carefully prepared and exposed to differe...
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#1Dong-Ge Jia (SJTU: Shanghai Jiao Tong University)
#2Wan-Yang Gao (SJTU: Shanghai Jiao Tong University)H-Index: 16
Last. Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
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Abstract null null Concrete structures strengthened with externally bonded fiber-reinforced polymer (FRP) composites are likely to experience significant temperature variations (i.e., thermal loadings) due to daily and seasonal temperature changes or possible fire exposure during service life. Such thermal loadings may lead to changes in the mechanical properties of components (including FRP, bonding adhesive and concrete substrate) and induce interfacial thermal stress due to the thermal incomp...
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#1Sushil Kumar (PolyU: Hong Kong Polytechnic University)
#2Binqi Chen (Huaqiao University)
Last. Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
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Abstract A new type of precast concrete sandwich wall panel, consisting of two basalt fiber reinforced polymer (FRP) reinforced geopolymer concrete wythes and an insulation layer, which are connected with hollow tubular glass FRP connectors, is studied in this paper. Ten sandwich wall panels were prefabricated and subjected to concentric axial loading. The primary test variables included slenderness ratio of the wall panel (i.e., the effective height to total sectional thickness ratio), longitud...
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#1Huang Botao (PolyU: Hong Kong Polytechnic University)H-Index: 11
#2Ke Fan Weng (Southern University of Science and Technology)H-Index: 1
Last. Victor C. Li (UM: University of Michigan)H-Index: 106
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Abstract Engineered/Strain-Hardening Cementitious Composites (ECC/SHCC) are fiber-reinforced cement-based materials with tensile strain-hardening and multiple-cracking characteristics. In this study, ultra-high-strength ECC (UHS-ECC) with a compressive strength over 210 MPa was successfully developed for the first time. The developed UHS-ECC exhibited excellent tensile strain capacity (5.2%), and fine crack width (72 μm). These characteristics were realized by combined use of polyethylene and st...
3 CitationsSource
#1Muhammad Riaz Ahmad (SJTU: Shanghai Jiao Tong University)H-Index: 12
#2Bing Chen (SJTU: Shanghai Jiao Tong University)H-Index: 35
Last. Muhammad Junaid Munir (RMIT: RMIT University)H-Index: 19
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Abstract Giving the high amount of carbon and energy emission from the use of traditional building materials, the use of bio-composites made from industrial crops especially hemp has caught attention from researchers in recent years. These bio-composites not only enhance the thermal performance of buildings but also promote sustainable development due to their eco-friendly nature. Due to their highly heterogeneous nature, however, most of the existing studies on the bio-composites have only focu...
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#1Tiao Wang (UTokyo: University of Tokyo)H-Index: 4
#2Jian-Jun Zheng (Zhejiang University of Technology)H-Index: 11
Last. Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
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#1Huang Botao (PolyU: Hong Kong Polytechnic University)H-Index: 11
#2Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
Last. Surendra P. Shah (UTA: University of Texas at Arlington)H-Index: 114
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AbstractA novel reinforced concrete structural member comprising ultrahigh-performance concrete (UHPC) and engineered cementitious composite (ECC) was proposed for use in underground structures, su...
2 CitationsSource
#1Haibing Zheng (PolyU: Hong Kong Polytechnic University)H-Index: 8
#2Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
Last. Weihua Li (SYSU: Sun Yat-sen University)H-Index: 33
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AbstractIn this work, the influence of a naphthalene sulfonate–based superplasticizer on the initial corrosion of galvanized steel bars in the simulated concrete pore solution was studied. The init...
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#1Qiwen Qiu (PolyU: Hong Kong Polytechnic University)H-Index: 1
#1Qiwen Qiu (PolyU: Hong Kong Polytechnic University)H-Index: 17
Last. Jian-Guo Dai (PolyU: Hong Kong Polytechnic University)H-Index: 34
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1 CitationsSource