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Title |
Effects of Shrinkage Reducing Agent (SRA) Type and Content on Mechanical Properties of Strain Hardening Cement Composite (SHCC)
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Authors |
한승주(Seung-Ju Han) ; 장석준(Seok-Joon Jang) ; 길배수(Bae-Su Khil) ; 최무진(Mu-Jin Choi) ; 윤현도(Hyun-Do Yun) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2016.28.1.041 |
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Keywords |
수축 저감제 ; 변형경화형 시멘트복합체 ; 역학적 특성 shrinkage reducing agent ; strain hardening cement composite ; mechanical properties |
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Abstract |
This research investigates the effects of shrinkage reducing agent (SRA) on the mechanical behavior of strainhardening cement composite (SHCC). SHCC material with specified compressive strength of 50 MPa was mixed and tested in this study. All SHCC mixes reinforced with volume fraction of 2.2% polyvinyl alcohol (PVA) fiber and test variables are type and dosage of shrinkage reducing agents. The shrinkage reducing materials used in this study are phase change material as the thermal stress reducing materials that have the ability to absorb or release the heat. The effect of SRA was examined based on the change in length caused by shrinkage and hardened mechanical properties, specially compressive, tensile and flexural behaviors, of SHCC material. It was noted that SRA reduces change in length caused by shrinkage at early age. SRA can also improve the tensile and flexural strengths and toughness of SHCC material used in this study.
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