碱热耦合的膨润土-花岗岩岩屑混合物膨胀特性

doi:10.12066/j.issn.1007-2861.2238

Abstract

Abstract:

During the life of a high-level radioactive waste repository, the decay heat of nuclear waste and alkaline pore water produced by the aging of concrete affect the working performance of the buffer material. To study the effects of alkali-thermo coupling on the swelling characteristics of buffer materials, NaOH solution is used in this study to simulate alkaline pore water, and a water bath pot is used to provide a constant temperature solution, where the solution is continuously circulated in a self-developed corrosion-resistant consolidator. The evolution curves of the swelling force are obtained through swelling force experiments under concentrations of 0.1, 0.5, and 1.0 mol/L and temperatures of 25 $^\circ$C and 50 $^\circ$C. Results showed that at the same temperature, the maximum and final swelling force of the sample decreased with an increase in the solution concentration. In addition, at the same concentration of alkaline solution infiltration, the maximum and final swelling force of the sample decreased with an increase in the granite mixing rate. Under the same granite mixing rate and same infiltration solution, the maximum and final swelling force of the sample decreased with an increase in temperature. The attenuation degree of swelling force increased with increases in solution concentration and temperature. For the mixture of crushed granite and bentonite, under the same temperature and same infiltration solution, the attenuation degree of swelling force decreased with an increase in the granite mixing rate.

Key words: alkali-thermo coupling, bentonite, crushed granite, swelling force, granite mixing rate

CLC Number:

TU443

QIN Aifang, HU Hongliang. Swelling characteristics of a mixture of crushed granite and bentonite under the condition of alkali-thermo coupling[J]. Journal of Shanghai University（Natural Science Edition）, 2022, 28(1): 132-144.

Figures/Tables 10

Table 1

Table 2

Fig. 1

Fig. 2

Table 3

Fig. 3

Fig. 4

Table 4

Fig. 5

Fig. 6

References 27

[1]	叶为民, Schanz T, 钱丽鑫, 等. 高压实高庙子膨润土 GMZ01 的膨胀力特征[J]. 岩石力学与工程学报, 2007, 26(S2): 3861-3865.
[2]	Nakayama S, Sakamoto Y, Yamaguchi T, et al. Dissolution of montmorillonite in compacted bentonite by highly alkaline aqueous solutions and diffusivity of hydroxide ions[J]. Applied Clay Science, 2004, 27(1/2): 53-65. doi: 10.1016/j.clay.2003.12.023
[3]	陈宝, 张会新, 陈萍. 碱溶液对 GMZ 膨润土膨胀性和渗透性的影响[J]. 中南大学学报 (自然科学版), 2013, 44(2): 737-742.
[4]	Savage D. Review of the potential effects of alkaline plume migration from a cementitious repository for radioactive waste [R]. London: UK Environment Agency, 1997.
[5]	Sun Z, Chen Y G, Cui Y J, et al. Effect of synthetic water and cement solutions on the swelling pressure of compacted Gaomiaozi(GMZ) bentonite: the Beishan site case, Gansu, China[J]. Engineering Geology, 2018, 244(3): 66-74. doi: 10.1016/j.enggeo.2018.08.002
[6]	Villar M V, Gómez-Espina R, Lloret A. Experimental investigation into temperature effect on hydro-mechanical behaviours of bentonite[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2010, 2(1): 71-78.
[7]	Ye W M, Zheng Z J, Chen B, et al. Effects of pH and temperature on the swelling pressure and hydraulic conductivity of compacted GMZ01 bentonite[J]. Applied Clay Science, 2014, 101(11): 192-198. doi: 10.1016/j.clay.2014.08.002
[8]	Fernández R, Cuevas J, Sánchez L, et al. Reactivity of the cement-bentonite interface with alkaline solutions using transport cells[J]. Applied Geochemistry, 2006, 21(6): 977-992. doi: 10.1016/j.apgeochem.2006.02.016
[9]	刘月妙, 蔡美峰, 王驹. 高放废物处置库缓冲材料导热性能研究[J]. 岩石力学与工程学报, 2007, 26(S2): 3891-3896.
[10]	王志俭, 刘泉声. 密实砂-膨润土混合物膨胀特性的试验研究[J]. 岩土力学, 2000, 21(4): 331-334.
[11]	Zhang H Y, Cui S L, Zhang M, et al. Swelling behaviors of GMZ bentonite-sand mixtures inundated in NaCl-Na$_2$SO$_4$ solutions[J]. Nuclear Engineering and Design, 2012, 242: 115-123. doi: 10.1016/j.nucengdes.2011.10.042
[12]	Cuisinier O, Masrouri F, Pelletier M, et al. Microstructure of a compacted soil submitted to an alkaline PLUME[J]. Applied Clay Science, 2008, 40: 159-170. doi: 10.1016/j.clay.2007.07.005
[13]	谢敬礼, 马利科, 高玉峰, 等. 北山花岗岩岩屑-膨润土混合材料导热性能研究[J]. 岩土力学, 2018, 39(8): 2823-2828, 2843.
[14]	Villar M V. Infiltration tests on a granite/bentonite mixture: influence of water salinity[J]. Applied Clay Science, 2006, 31(1/2): 96-109. doi: 10.1016/j.clay.2005.07.007
[15]	Mata C, Guimaraes L D N, Ledesma A, et al. A hydro-geochemical analysis of the saturation process with salt water of a bentonite crushed granite rock mixture in an engineered nuclear barrier[J]. Engineering Geology, 2005, 81(3): 227-245. doi: 10.1016/j.enggeo.2005.06.018
[16]	Chen Z G, Tang C S, Zhu C, et al. Compression, swelling and rebound behavior of GMZ bentonite/additive mixture under coupled hydro-mechanical condition[J]. Engineering Geology, 2017, 221: 50-60. doi: 10.1016/j.enggeo.2017.02.030
[17]	郭永海, 王驹, 吕川河, 等. 高放废物处置库甘肃北山野马泉预选区地下水化学特征及水-岩作用模拟[J]. 地学前缘, 2005, 12(S1): 117-123.
[18]	Wang J. Deep geological disposal of high level radioactive waste in China: latest progress by 2007, Chinese-German workshop on radioactive waste disposal [R]. Beijing: Beijing Research Institute of Uranium Geology, Beijing, 2007.
[19]	Samper J, Mon A, Montenegro L. A revisited thermal, hydrodynamic, chemical andmechanical model of compacted bentonite for the entire duration of the FEBEX in situ test[J]. Applied Clay Science, 2018, 160: 58-70. doi: 10.1016/j.clay.2018.02.019
[20]	Zhao J, Chen L, Collin F, et al. Numerical modeling of coupled thermal-hydro-mechanical behavior of GMZ bentonite in the China-Mock-up test[J]. Engineering Geology, 2016, 214: 116-126. doi: 10.1016/j.enggeo.2016.09.015
[21]	Ye W M, Zhu C M, Chen Y G, et al. Influence of salt solutions on the swelling behavior of the compacted GMZ01 bentonite[J]. Environmental Earth Sciences, 2015, 74(1): 793-802. doi: 10.1007/s12665-015-4108-1
[22]	Suzuki S, Prayongphan S, Ichikawa Y, et al. In situ observations of the swelling of bentonite aggregates in NaCl solution[J]. Applied Clay Science, 2005, 29(2): 89-98. doi: 10.1016/j.clay.2004.11.001
[23]	Villar M V. Thermo-hydro-mechanical characterisation of a bentonite from Cabo de Gata: a study applied to the use of bentonite as sealing material in high level radioactive waste repositories[J]. Publicación Técnica (Empresa Nacional de Residuos Radiactivos), 2002, 4: 215-258.
[24]	Tripathy S, Sridharan A, Schanz T. Swelling pressures of compacted bentonites from diffuse double layer theory[J]. Canadian Geotechnical Journal, 2004, 41(3): 437-450. doi: 10.1139/t03-096
[25]	邵玉娴, 施斌, 刘春, 等. 黏性土水理性质温度效应研究[J]. 岩土工程学报, 2011, 33(10): 1576-1582.
[26]	Fernández R, Mäder U K, Rodríguez M, et al. Alteration of compacted bentonite by diffusion of highly alkaline solutions[J]. European Journal of Mineralogy, 2009, 21(4): 725-735. doi: 10.1127/0935-1221/2009/0021-1947
[27]	Sánchez L, Cuevas J, Ramírez S, et al. Reaction kinetics of FEBEX bentonite in hyperalkaline conditions resembling the cement-bentonite interface[J]. Applied Clay Science, 2006, 33(2): 125-141. doi: 10.1016/j.clay.2006.04.008

Swelling characteristics of a mixture of crushed granite and bentonite under the condition of alkali-thermo coupling

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 10

References 27

Related Articles 14

Recommended Articles

Metrics

Comments

[1]	CHE Yue, SUN Dean. Experiment of ageing effect on tensile strength of compacted Gaomiaozi bentonites [J]. Journal of Shanghai University（Natural Science Edition）, 2021, 27(5): 919-927.
[2]	YANG Kang, SUN Dean, ZHANG Qianyue. Ageing effect on swelling characteristics of Gaomiaozi (GMZ) bentonite saturated by salt solution [J]. Journal of Shanghai University（Natural Science Edition）, 2021, 27(1): 181-189.
[3]	RUAN Kunlin, SUN Dean, FU Xianlei. Swelling characteristics and hydraulic conductivities of bentonite and sand mixtures saturated with landfill leachate [J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(6): 989-1000.
[4]	QIN Aifang, FU Xianlei, RUAN Kunlin, JIA Xu. Mechanical properties of bentonite-calcium carbonate mixture [J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(4): 628-639.
[5]	Aifang QIN, Xu JIA. Effects of different initial porosities on waste repository of buffer material with high-level radioactivity [J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(4): 516-525.
[6]	JIA Di, SUN Dean, ZHANG Long. Effects of saline solution and sand rate on strength of GMZ bentonite [J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(6): 1002-1013.
[7]	JIANG Jianghong, SUN Dean. Influence of temperature on swelling characteristics of GMZ bentonite due to wetting [J]. Journal of Shanghai University（Natural Science Edition）, 2017, 23(5): 762-771.
[8]	FANG Lei, SUN De-an, SUN Wen-jing. Swelling Characteristics of Gaomiaozi Ca-Bentonite [J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(5): 508-512.
[9]	QIN Ai-fang, WANG Hai-tang, ZHAO Xiao-long. Influence of Heat Source on Near Field Behavior of Nuclear Waste Repository [J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(5): 520-526.
[10]	SUN De-an, SHAO Li-na. Swelling Deformation Characteristics of Gaomiaozi Bentonite-Sand Mixtures and Its Prediction [J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(2): 197-202.
[11]	QIN Ai-fang,ZHAO Fei,ZHAO Xiao-long. Two-Dimensional FEM Analysis of Near Field Influence of Buffer Material Parameters on High Level Radioactive Nuclear Waste Repository [J]. Journal of Shanghai University（Natural Science Edition）, 2012, 18(5): 539-544.
[12]	SHEN Yun,WENG Xin-chu,SONG Hong-sheng,LIAO Xian-yan,HE Zhi-hui. Decolorization of Silkworm Pupa Oil with Attapulgite Clay [J]. Journal of Shanghai University（Natural Science Edition）, 2011, 17(5): 687-690.
[13]	SUN De-An, YAN Wei, SUN Wen-Jing. Hydraulic and Mechanical Behavior of Unsaturated Sand-Bentonite Mixture [J]. Journal of Shanghai University（Natural Science Edition）, 2010, 16(2): 196-202.
[14]	SUN Wen-jing,SUN De-an,YAN Wei. Deformation Characteristics of Unsaturated Bentonite under K₀-Compression Stress State [J]. Journal of Shanghai University（Natural Science Edition）, 2010, 16(1): 105-110.