硅酸盐学报

氧化石墨烯对水泥水化进程及其主要水化产物的影响

单位：1. 北京建筑大学土木与交通工程学院北京市结构工程与环境修复材料重点实验室北京 100044 2. 中国科学院山西煤炭化学研究所碳纤维制备技术国家工程实验室太原 030001

分类号：TQ172

出版年,卷(期):页码：2018,46(2):163-172

DOI：

摘要：

研究了氧化石墨烯(GO)对水泥水化进程及其主要水化产物氢氧化钙(CH)、水化硅酸钙凝胶(C-S-H)的影响。采用原子力显微镜、透射电镜等对所用GO进行了表征，采用水化热、X射线衍射分析以及热重分析等方法对不同GO掺量的新拌水泥浆体水化程度以及水化产物含量等进行了测量。结果表明：GO的掺入对水泥水化进程并无明显影响，即GO并不存在促进水化的作用，但是GO的掺入可以影响水化产物尤其是氢氧化钙的结晶过程和形态；GO对水泥浆体硬化后形成的凝胶孔特征有重要影响，随着GO掺量的增加，能够使凝胶孔中存有更多的自由水，并在一定程度上细化、封闭孔结构；GO的存在不仅对六方片状晶体的生成有明显抑制作用，并且能够细化晶体氢氧化钙的尺寸。

The influence of graphite oxide (GO) on the hydration of cement and its main hydration products, i.e., calcium hydroxide (CH) and hydrated calcium silicate gel (C-S-H), was investigated. The GO was characterized by atomic force microscopy, transmission electron microscopy. The hydration degree and the content of hydration products of fresh cement paste with different GO dosages (i.e., 0%, 0.01%, 0.03% and 0.05%, in mass fraction) were measured by means of hydration heat analysis, X-ray diffraction and thermogravimetric analysis. The results show that the GO has no effect on the hydration process of cement, but it can extremely affect the formation of hydration products, especially the crystallization process and morphology of calcium hydroxide. GO has an important influence on the pore characteristics of hardened cement paste. The more free water can be formed in the gel pore, and the pore structure can be refined to a certain extent when the GO content is increased. Also, the presence of graphene oxide inhibits the formation of hexagonal plates crystals, and refines the size of crystalline calcium hydroxide.

基金项目：

国家自然科学基金(51508020)。

作者简介：

王琴(1979—)，女，博士，副教授。

参考文献：

[1] 黄政宇, 李操旺, 刘永强. 聚乙烯纤维对超高性能混凝土性能的影响[J]. 材料导报, 2014, 28(20): 111–115.

HUANG Zhengyu, LI Caowang, LIU Yongqiang. J Mater Rev(in Chinese), 2014, 28(20): 111–115.

[2] 徐慎春, 吴成清, 刘中宪, 等. 钢纤维及纳米材料对超高性能混凝土早期力学性能的影响[J]. 硅酸盐通报, 2014, 33(3): 542–546.

XU Shenchun, WU Chengqing, LIU Zhongxian, et al. Bull Ceram Soc (in Chinese), 2014, 33(3): 542–546.

[3] 丁沙, 张国志, 游新鹏, 等. 经济型UHPC的制备及性能研究[J]. 混凝土, 2016(2): 131–133.

DING Sha, ZHANG Guozhi, YOU Xinpeng, et al. Concrete(in Chinese), 2016(2): 131–133.

[4] 史才军, 何稳, 吴泽媚, 等. 纤维对UHPC力学性能的影响研究进展[J]. 硅酸盐通报, 2015, 34(8): 2227–2236.

SHI Caijun, HE Wen, WU Zemei, et al. Bull Chin Ceram Soc(in Chinese), 2015, 34(8): 2227–2236.

[5] 冯春花, 王希建, 朱建平, 等. 纳米材料在混凝土中的应用研究进展[J]. 硅酸盐通报, 2013, 32(8): 1557–1561.

FENG Chunhua, WANG Xijian, ZHU Jianping, et al. Bull Chin Ceram Soc(in Chinese), 2013, 32(8): 1557–1561.

[6] 仵鹏涛, 刘中宪, 吴成清, 等. 纳米材料对超高性能混凝土动态力学特性的影响实验研究[J]. 硅酸盐通报, 2016, 35(11): 3546–3555.

WU Pengtao, LIU Zhongxian, WU Chengqing, et al. Bull Chin Ceram Soc(in Chinese), 2016, 35(11): 3546–3555.

[7] 黄政宇, 曹方良. 纳米材料对超高性能混凝土性能的影响[J]. 材料导报, 2012, 26(18): 136–141.

HUANG Zhengyu, CAO Fangliang. J Mater Rev(in Chinese), 2012, 26(18): 136–141.

[8] LEE C G, WEI X D, KYSAR J W, et al. Measurement of the elastic properties and intrinsic strength of monolayer grapheme[J]. Science, 2008, 321: 385–388．

[9] LIN C, WEI W, HU Y H. Catalytic behavior of graphene oxide for cement hydration process[J]. J Phys Chem Solids, 2015, 89(3): 128–133.

[10] LV Shenghua, MA Yujuan, QIU Chaochao, et al. Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites[J]. Construct Build Mater, 2013, 49: 121–127.

[11] LV Shenghua, LIU Jingjing, SUN Ting, et al. Effect of GO nanosheets on shapes of cement hydration crystals and their formation process[J]. Construct Build Mater, 2014, 64: 231–239.

[12] ELZBIETA HORSZCZARUK, EWA MIJOWSKA, RYSZARD J K, et al. Nanocomposite of cement/graphene oxide-Impact on hydration kinetics and Young’s modulus[J]. Construct Build Mater, 2015, 78: 234–242.

[13] ZHU Pan, LI He, LING Qiu, et al. Mechanical properties and microstructure of a graphene oxide-cement composite[J]. Cem Concr Compos, 2015, 58: 140–147.

[14] BABAK F, ABOLFAZL H, ALIMORAD R, at al. Preparation and mechanical properties of graphene oxide: cement nanocomposites[J]. Scientific World J, 2014(4): 276323-10. doi:10.1155/2014/276323.

[15] SAMUEL C, ZHU Pan, JAY G S, et al. Nano reinforced cement and concrete composites and new perspective from graphene oxide[J]. Construct Build Mater, 2014, 73: 113–124.

[16] 王琴, 王健, 刘伯伟, 等. 多壁碳纳米管水泥基复合材料的压敏性能研究[J]. 硅酸盐通报, 2016, 35(9): 2733–2740.

WANG Qin, WANG Jian, LIU Bowei, et al. Bull Chin Ceram Soc(in Chinese), 2016, 35(9): 2733–2740.

[17] 杜涛. 氧化石墨烯水泥基复合材料性能研究[D]. 哈尔滨工业大学, 2014.

DU Tao. Effect of graphene oxide on properties of cement-based composite. Harbin Institute of Technology, 2014.

[18] 杨鼎宜, 孙伟, 刘志勇. 钙矾石晶体热分解的动力学[J]. 硅酸盐学报, 2007, 35(12): 1641–1645.

YANG Dingyi, SUN Zhiyong. J Chin Ceram Soc, 2007, 35(12): 1641–1645.

[19] WANG Qin, CUI Xinyou, WANG Jian, et al. Effect of fly ash on rheological properties of graphene oxide cement paste[J]. Construct Build Mater, 2017, 138: 35–44.

[20] 王琴, 王健, 吕春祥, 等. 氧化石墨烯水泥浆体流变性能的定量化研究[J]. 新型炭材料, 2016, 31(6): 574–584.

WANG Qin, WANG Jian, LV Chunxiang, et al. J New Carbon Mater(in Chinese), 2016, 31(6): 574–584.

[21] KUMAR R, BHATTACHARJEE B. Study on some factors affecting the results in the use of MIP method in concrete research[J]. Cem Concr Res, 2003, 33(3): 417–424.

[22] BARNES, Ed P. Structure and Performance of Cements: v.1[M]. Applied Science, 1983.

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