Mix design and expansion behavior of sulpho-aluminate expansive cementitious composite |
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Authors: | MAN Teng WANG Boxin JIN Henan and QIU Jianhui |
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Institution: | College of Construction Engineering,Jilin University,Changchun 130026,China |
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Abstract: | Sulpho-aluminate expansive cementitious composite is proved to be one of the most effective ways to prevent concrete cracking too soon. Mix design of sulpho-aluminate expansive cementitious composite complete- ly depends on experience and experiments at present. This method ignores the influence of expansion behavior which hinders the application of sulpho-aluminate expansive cementitious composite. The workability,free ex- pansion property,flexural strength and compressive strength of sulpho-aluminate expansive cementitious com- posite have been investigated by tests. The relationship between expansion ratio and mix design parameters such as curing age,water-cement ratio and cement abundance coefficient is deduced according to the experimental statistics. A new simplified approach to mix design of sulpho-aluminate expansive cementitious composite is pro- posed as a reference for construction application,which avoids experiments and experience. |
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Keywords: | sulpho-aluminate expansive cement mix design expansive behavior |
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