【摘 要】
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In this paper, the basic properties, including setting time, compressive strength, drying shrinkage of sulphate aluminum cement paste in corporating bamboo charcoal (BC)with the various fineness and c
【机 构】
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Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University,S
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
In this paper, the basic properties, including setting time, compressive strength, drying shrinkage of sulphate aluminum cement paste in corporating bamboo charcoal (BC)with the various fineness and contents were studied as well as the pore structure and microstructure were investigated using the microscopic testing methods.The results show that the incorporation of different fineness and content of BC can extend the setting time of cement paste, the smaller BC particles led to the more obvious trend.Different fineness of BC resulted in a decrease of the cement paste strength, and when the dosage was 25%, the strength of cement paste gradually reduced with the increase of BC, while as the dosage was up to 30%, the strength became increase slightly.As the average fineness is 359.0μm (P), the BC reduced the paste early drying shrinkage effectively, but it also increased the long-term shrinkage.The amount of pores less than 50nm increased obviously with the extension in age.As the fineness of BC diminished, the average pore size and porosity of paste decreased and the amount of micro pore increased.
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