土遗址裂隙注浆浆⁃土界面粘结性能干旱环境耐久性对比

doi:10.13229/j.cnki.jdxbgxb.20211325

Abstract

Abstract:

Aiming at the durability of the slurry-soil interface in arid environment under the synergistic effect has become an urgent need for its promotion and application in the field of crack repairs in earthen ruins. Important support sought. The undisturbed site soil was used to carry out indoor simulated fissure grouting with or without pile-mortar synergistic mode， and conducts dry-wet， freeze-thaw， salt-tolerant and alkali-tolerant 4 types of the grout-soil interface formed in different modes for durability test in arid environment. Wave speed measurement and interface direct shear test are carried out on samples at different ages， and the slurry-soil interface bonding is revealed by comparing and analyzing its wave speed， interface mechanical parameters， interface failure mode and shear stress-displacement relationship. The characteristics and laws of performance degradation in arid environment. Results show that the failure form of the interface during the entire age is mainly the bonding failure of the flat interface and the combined failure of the bonding and incisor failure of the undulating interface; under any durability condition， the grout-soil under the four grouting modes （the interface wave speed， surface residual soil thickness， peak shear stress， and interface shear strength parameters） all show a downward trend with the increase of age， and the size relationship is all expressed as grouting with lime piles and grooves>grouting with grooves> grouting with lime piles>grouting alone; the above rules all show that the durability of the dry environment durability of the pile-mortar synergistic bond between the grout-soil interface of the soil ruins is significantly better than the single grouting mode.

Key words: earthen ruins, durability, slurry-soil interface, the pile-mortar synergistic, bonding performance

CLC Number:

TU521

Kai CUI,Peng-fei XU,Jing-jing HUANG,Xiang-peng YU,Xiao-hai WANG. Comparison of bond performance between grouting slurry and soil interface in soil sites and durability in arid environment[J].Journal of Jilin University(Engineering and Technology Edition), 2023, 53(10): 2856-2868.

Figures/Tables 9

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References 26

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物理量	数值	物理量	数值
天然含水率	1.05%	最大干密度	1.89 （g·cm^-3）
天然密度	1.52 （g·cm^-3）	孔隙率	44%
干密度	1.50 （g·cm^-3）	液限	23.8%
相对密度	2.69	塑限	16%
最佳含水率	18%

耐久性环境	循环次数/次	粘聚力c/kPa				内摩擦角/（°）
耐久性环境	循环次数/次	ZN	ZY	JN	JY	ZN	ZY	JN	JY
干湿	0	67.9	73.8	83.6	86.8	45.2	46.0	48.1	50.0
	3	72.8	82.9	103.2	103.1	43.0	43.0	45.3	47.7
	6	65.6	75.1	94.3	99.5	38.3	40.4	41.4	43.2
	9	62.6	67.9	76.0	91.9	37.2	38.7	40.0	42.9
	12	56.8	59.0	66.0	72.5	36.0	37.2	39.3	41.3
	15	51.8	52.9	56.0	57.5	35.4	35.7	39.0	40.7
冻融	0	68.3	74.2	85.3	86.7	45.0	46.6	48.4	50.1
	3	66.3	70.1	79.0	82.0	42.3	43.5	43.8	45.0
	6	60.1	66.1	72.1	78.2	40.0	42.3	43.2	44.1
	9	53.2	60.0	66.9	71.1	38.7	40.4	42.3	43.5
	12	33.1	42.0	45.0	56.0	32.2	35.0	36.9	38.0
	15	31.6	33.0	40.0	42.0	31.8	33.8	35.4	35.4
盐环境	0	69.1	74.8	85.2	87.3	45.0	46.2	48.6	50.2
	1	58.2	67.9	70.0	78.9	40.7	41.3	42.9	44.4
	2	52.0	60.1	62.0	70.9	38.3	39.7	42.0	43.2
	3	39.4	51.0	54.9	65.1	37.2	38.3	41.0	41.8
	4	30.1	38.0	41.1	48.0	33	35.3	37.6	39.0
	5	27.1	32.0	35.9	42.0	29.7	32.2	33.4	34.2
碱环境	0	68.1	74.2	82.8	87.6	45.1	46.0	48.2	50.3
	1	70.5	81.6	83.8	89.1	43.5	45.3	45.9	48.2
	2	49.3	56.2	70.0	79.0	40.4	42.6	43.5	46.4
	3	41.2	51.1	65.0	72.9	36.9	39.7	41.3	45.1
	4	34.6	42.0	51.9	60.0	35.8	37.9	39.7	41.0
	5	31.1	34.0	41.0	13.0	32.6	35.0	35.0	35.8

耐久性环境	界面类型	循环次数/次	τ_p/kPa	s_p/mm	峰值前		峰值后		峰值前曲线相关系数	峰值后曲线相关系数
耐久性环境	界面类型	循环次数/次	τ_p/kPa	s_p/mm	a	b	A	B	峰值前曲线相关系数	峰值后曲线相关系数
干湿	ZN	15	333.8	5.05	1.49	7.10	-4.06	1.30	0.995	0.998
	ZY		343.0	3.93	0.87	7.28	-3.54	0.72	0.989	0.990
	JN		400.0	4.68	1.26	5.03	-0.75	0.84	0.985	0.973
	JY		415.3	5.61	0.94	7.65	-3.78	1.10	0.996	0.997
冻融	ZN	15	273.8	2.99	0.44	8.81	-2.99	0.56	0.983	0.962
	ZY		301.8	3.37	0.41	9.04	-7.58	0.82	0.986	0.986
	JN		323.0	4.30	0.93	8.74	-8.39	1.03	0.992	0.986
	JY		324.5	4.11	0.53	10.18	-12.30	1.19	0.997	0.982
盐环境	ZN	5	256.8	2.99	1.51	6.55	-6.47	0.88	0.989	0.998
	ZY		282.2	4.11	0.86	10.58	-4.06	0.74	0.998	0.996
	JN		315.3	4.11	0.23	11.33	-3.57	0.62	0.993	0.995
	JY		309.1	5.05	1.25	10.10	-3.64	0.56	0.997	0.993
碱环境	ZN	5	279.1	4.11	1.77	6.83	-4.89	0.84	0.991	0.991
	ZY		310.7	4.30	1.38	7.92	-3.30	0.64	0.997	0.996
	JN		327.6	5.05	0.73	11.03	-2.63	0.41	0.996	0.995
	JY		332.2	4.30	0.59	9.53	-2.82	0.21	0.987	0.986

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Comparison of bond performance between grouting slurry and soil interface in soil sites and durability in arid environment

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