Oil swellable polymer modified cement paste: Expansion and crack healing upon oil absorption
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- 作者：Zichen Lua ; Xiangming Konga ; b ; kxm@mail.tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Ruifang Yanga ; Yanrong Zhanga ; c ; Lingfei Jianga ; Ziming Wangd ; Qichun Wange ; Wei Liue ; Min Zenge ; Shiming Zhoue ; Biqin Dongf ; Feng Xingf
- 关键词：Oil swellable polymer ; Oil absorption ; Portland cement paste ; Expansion
- 刊名：Construction and Building Materials
- 出版年：2016
- 出版时间：1 July 2016
- 年：2016
- 卷：114
- 期：Complete
- 页码：98-108
- 全文大小：2505 K
文摘
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An oil swellable polymer (OSP) with oil absorptivity as high as 700% is synthesized.
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Addition of OSP decreases the total porosity of the hardened cement paste (HCP).
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Addition of OSP reduces the water adsorption rate and increases the oil absorptivity of HCP.
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Incorporation of OSP significantly increases the expandability of HCP upon oil absorption.
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A novel technique to achieve a crack self-healing property is developed.