Matrix design of light weight, high strength, high ductility ECC
In the past decade, the research on high strength, high ductility engineered cementitious composites (HSHD-ECC) has drawn much attention worldwide. However, due to the high matrix toughness associated with HSHD-ECC, saturated multiple cracking phenomena was rarely observed, hence hindering its robus...
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sg-ntu-dr.10356-1430602021-03-23T04:48:14Z Matrix design of light weight, high strength, high ductility ECC Zhang, Zhigang Yuvaraj, Ananya Di, Jin Qian, Shunzhi School of Civil and Environmental Engineering Engineering::Environmental engineering ECC Matrix Design In the past decade, the research on high strength, high ductility engineered cementitious composites (HSHD-ECC) has drawn much attention worldwide. However, due to the high matrix toughness associated with HSHD-ECC, saturated multiple cracking phenomena was rarely observed, hence hindering its robustness and high strain capacity. In this paper, ECC mixtures with relatively weak matrix were designed to allow much more cracks to be initiated, meanwhile retaining features of high strength, high ductility as well as light weight. The experimental results showed that ECC mixtures with addition of air entraining agent (AEA) increases the compressive/tensile strength slightly, while adding light weight filler (LWF) materials into ECC mixtures show the opposite tendency. However, all ECC mixtures exceed 60 MPa in compressive strength that satisfy the requirement of high strength concrete. In addition, incorporating AEA and LWF materials into HSHD-ECC lowered its matrix toughness and density effectively, as a result, increased its strain capacity and extent of saturated cracking significantly. In particular, the strain capacity of HSHD-ECC with addition of fly ash cenosphere (FAC) could reach 12.5%. At micro-scale level, the fiber/matrix interfacial frictional bond was altered with the matrix design in HSHD-ECC, and the experimental findings well explained the change tendency in tensile strength of five ECC mixtures based on micromechanics theory. Ministry of Education (MOE) Nanyang Technological University Accepted version The authors would like to acknowledge the financial support from MOE Tier1 (RG87/15) and School of CEE Research Staff Funding Support for Assistant Professors. The first author would like to graciously thank 111 Project of China (Grant No. B18062), and the National Natural Science Foundation of China (Grant No.51708061), and the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No.KJQN201800 126) for partial financial support of this work. 2020-07-27T06:17:51Z 2020-07-27T06:17:51Z 2019 Journal Article Zhang, Z., Yuvaraj, A., Di, J. & Qian, S. (2019). Matrix design of light weight, high strength, high ductility ECC. Construction and Building Materials, 210, 188-197. https://dx.doi.org/10.1016/j.conbuildmat.2019.03.159 0950-0618 https://hdl.handle.net/10356/143060 10.1016/j.conbuildmat.2019.03.159 2-s2.0-85063028996 210 188 197 en Construction and Building Materials © 2019 Elsevier Ltd. All rights reserved. This paper was published in Construction and Building Materials and is made available with permission of Elsevier Ltd. application/pdf |
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Engineering::Environmental engineering ECC Matrix Design Zhang, Zhigang Yuvaraj, Ananya Di, Jin Qian, Shunzhi Matrix design of light weight, high strength, high ductility ECC |
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In the past decade, the research on high strength, high ductility engineered cementitious composites (HSHD-ECC) has drawn much attention worldwide. However, due to the high matrix toughness associated with HSHD-ECC, saturated multiple cracking phenomena was rarely observed, hence hindering its robustness and high strain capacity. In this paper, ECC mixtures with relatively weak matrix were designed to allow much more cracks to be initiated, meanwhile retaining features of high strength, high ductility as well as light weight. The experimental results showed that ECC mixtures with addition of air entraining agent (AEA) increases the compressive/tensile strength slightly, while adding light weight filler (LWF) materials into ECC mixtures show the opposite tendency. However, all ECC mixtures exceed 60 MPa in compressive strength that satisfy the requirement of high strength concrete. In addition, incorporating AEA and LWF materials into HSHD-ECC lowered its matrix toughness and density effectively, as a result, increased its strain capacity and extent of saturated cracking significantly. In particular, the strain capacity of HSHD-ECC with addition of fly ash cenosphere (FAC) could reach 12.5%. At micro-scale level, the fiber/matrix interfacial frictional bond was altered with the matrix design in HSHD-ECC, and the experimental findings well explained the change tendency in tensile strength of five ECC mixtures based on micromechanics theory. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Zhang, Zhigang Yuvaraj, Ananya Di, Jin Qian, Shunzhi |
format |
Article |
author |
Zhang, Zhigang Yuvaraj, Ananya Di, Jin Qian, Shunzhi |
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Zhang, Zhigang |
title |
Matrix design of light weight, high strength, high ductility ECC |
title_short |
Matrix design of light weight, high strength, high ductility ECC |
title_full |
Matrix design of light weight, high strength, high ductility ECC |
title_fullStr |
Matrix design of light weight, high strength, high ductility ECC |
title_full_unstemmed |
Matrix design of light weight, high strength, high ductility ECC |
title_sort |
matrix design of light weight, high strength, high ductility ecc |
publishDate |
2020 |
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https://hdl.handle.net/10356/143060 |
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1695706141164568576 |