Search Results - "Lai, M.H."

Behavior of SSFA high-strength concrete at ambient and after exposure to elevated temperatures by Huang, Z.C., Liu, J.J., Ren, F.M., Cui, J., Song, Z., Lu, D.H., Lai, M.H.

“…Owing to the higher strength-to-weight ratio and elastic modulus as well as more cost-effective, high-strength concrete (HSC) is now becoming increasing…”
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A theoretical axial stress-strain model for circular concrete-filled-steel-tube columns by Lai, M.H., Ho, J.C.M.

“…•A new hoop strain equation for CFST column is developed based on 122 test results.•A theoretical axial stress-strain model with complex 3D stress state is…”
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Effect of fillers on the mechanical properties and durability of steel slag concrete by Lai, M.H., Chen, Z.H., Wang, Y.H., Ho, J.C.M.

“…•The compressive strength increases as the BOF Steel Slag coarse aggregates (BSSCA) or BSS fine aggregates (BSSFA) replacement ratio of aggregates…”
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Improving mechanical behavior and microstructure of concrete by using BOF steel slag aggregate by Lai, M.H., Zou, Jiajun, Yao, Boyu, Ho, J.C.M., Zhuang, Xin, Wang, Qing

“…•A feasible technical route for utilizing deposited BOFSS in concrete is proposed.•The replacement ratio of BOFSS coarse (SSCA) and fine (SSFA) aggregates is…”
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Interdependence of passing ability, dilatancy and wet packing density of concrete by Lai, M.H., Griffith, A.M., Hanzic, L., Wang, Qing, Ho, J.C.M.

“…•Dilatancy occurs when concrete passes through narrow gap.•Passing ability is enhanced by increasing wet packing density via improving flowability and…”
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Uni-axial behaviour of externally confined UHSCFST columns by Lai, M.H., Chen, M.T., Ren, F.M., Ho, J.C.M.

“…Thanks to the larger and more continuous confining stress provided by hollow steel tube, ultra-high-strength concrete-filled-steel-tube (UHSCFST) columns are…”
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Dilatancy swerve in superplasticized cement powder paste by Lai, M.H., Lao, W.C., Tang, W.K., Hanzic, L., Wang, Q., Ho, J.C.M.

“…•Dilatancy swerve was observed in cement powder paste as superplasticizer (SP) increases.•It can be explained by the theory of clustering of mobile and…”
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A stress-path dependent stress-strain model for FRP-confined concrete by Lai, M.H., Liang, Y.W., Wang, Q., Ren, F.M., Chen, M.T., Ho, J.C.M.

“…•A stress-path dependent axial stress-strain model of FRP-confined concrete is proposed.•The model considers stress-path history of confinement by using an…”
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A path dependent stress-strain model for concrete-filled-steel-tube column by Lai, M.H., Song, W., Ou, X.L., Chen, M.T., Wang, Q., Ho, J.C.M.

“…•A stress-path dependent axial load-strain model of CFST column is proposed.•The effect of confining stress path dependence is studied.•The effects of…”
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Cause and mitigation of dilatancy in cement powder paste by Lai, M.H., Binhowimal, S.A.M., Hanzic, L., Wang, Q., Ho, J.C.M.

“…•Dilatancy of cement powder paste is caused by long polymer chains of superplasticiser.•Adequate superplasticiser decreases dilatancy because of better…”
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An analysis-based model for axially loaded circular CFST columns by Lai, M.H., Ho, J.C.M.

“…Concrete-filled-steel-tube (CFST) columns have been increasingly adopted in many modern structures due to the beneficial composite action between steel tube…”
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A path dependent constitutive model for CFFT column by Ho, J.C.M., Ou, X.L., Chen, M.T., Wang, Q., Lai, M.H.

“…•A stress-path dependent constitutive model of CFFT column was proposed.•Bi-axial stress state of FRP tube was studied.•The effect of stress path dependence of…”
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Residual properties of steel slag coarse aggregate concrete after exposure to elevated temperatures by Ho, J.C.M., Liang, Y., Wang, Y.H., Lai, M.H., Huang, Z.C., Yang, D., Zhang, Q.L.

“…•The post-fire physical and chemical behaviour of BSSCA concrete was studied.•The effect of slag replacement ratio on post-fire behaviour of concrete was…”
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Behaviour of FRP tube-concrete-encased steel composite columns by Ren, F.M., Liang, Y.W., Ho, J.C.M., Lai, M.H.

“…•An experimental study consisting of 41 columns (8 bare steel sections, 12 CES and 21 FTCES columns) has been conducted.•Axial load-strain relationships and…”
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Shrinkage design model of concrete incorporating wet packing density by Lai, M.H., Binhowimal, S.A.M., Griffith, A.M., Hanzic, L., Wang, Qing, Chen, Zhouyi, Ho, J.C.M.

“…•Cementitious Paste Volume (CPV) and Wet Packing Density (WPD) are critical factors affecting concrete shrinkage.•Replacing partial cement with fly ash (FA) or…”
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Effect of fillers on the behaviour of heavy-weight concrete made by iron sand by Lai, M.H., Wu, K.J., Cheng, X., Ho, J.C.M., Wu, J.P., Chen, J.H., Zhang, A.J.

“…•Iron sand can improve the mechanical properties and flowability of heavy weight concrete.•Adding silica fume (SF) in heavy-weight concrete can increase the…”
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Confinement effect of ring-confined concrete-filled-steel-tube columns under uni-axial load by Lai, M.H., Ho, J.C.M.

“…•Uni-axial behaviour of concrete-filled-steel-tube (CFST) columns with external steel rings confinement from 62 column tests.•Improved interface bonding,…”
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Uni-axial behaviour of steel slag concrete-filled-steel-tube columns with external confinement by Lai, M.H., Lin, Y.H., Jin, Y.Y., Fei, Q., Wang, Z.C., Ho, J.C.M.

“…Using steel slag, a waste by-product in the steel industry to replace natural aggregates to produce concrete can offer a sustainable solution in mitigating the…”
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A novel packing-coupled stress-strain model for confined concrete by Lai, M.H., Lin, J.L., Cui, J., Ren, F.M., Kitipornchai, S., Ho, J.C.M.

“…To develop low carbon footprint concrete (LCFC) with less CO2 emissions, various minerals (limestone, metakaolin) and industrial waste by-product (fly ash…”
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Uni-axial behaviour of expansive CFST and DSCFST stub columns by Ho, J.C.M., Ou, X.L., Li, C.W., Song, W., Wang, Q., Lai, M.H.

“…•Ten CFST and DSCFST columns with ordinary or expansive concrete were tested under uni-axial compression.•Prestress of concrete in both axial and hoop…”
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