Formula Design and Mechanical Properties of Three Kinds of Modified Raw Soil Materials Mixed with Solid Waste

Abstract

Abstract: In order to improve the mechanical properties of raw soil materials, iron tailings, gangue, calcium carbide slag, oil sludge and cement were used as admixtures to modify raw soil. On the basis of the monomorphic lattice method, the effects of different factors on the failure morphology, compressive strength and data discreteness of the specimen were studied through compressive test of 180 modified raw soil specimens of three modified formulas. Using the frequency analysis method, the optimal formula of solid waste modified raw soil material was studied. Then, the fractal and pore structures inside the loaded material were analyzed at a microscopic level through CT scanning. The results show that the compressive failure forms of different admixture-modified raw soil specimens are basically the same, but the admixture significantly affects the limit displacement. Gangue and calcium carbide slag, iron tailings and cement, oil sludge and cement as raw soil admixtures can greatly improve the mechanical properties of modified raw soil specimens, the type and the amount of admixture have a significant impact on the strength and data discreteness of modified raw soil specimens. After frequency optimization, the ideal strength admixture ratios for the three formulas are 1) iron tailings 12.1%~19.5% (mass fraction, the same below), cement 13.9%~19.1% and raw soil 65.5%~69.9%; 2) calcium carbide slag 6.7%~14.1%, coal gangue 8.9%~11.8% and raw soil 76.7%~81.8%; 3) oil sludge 11.4%~14.4%, cement 17.4%~19.4% and raw soil 67.1%~70.5%. The fractal and pore characteristics inside the material are stable, exhibiting small fluctuations and good compactness.

Key words: modified raw soil, solid waste utilization, compressive strength, formula design, frequency analysis

CLC Number:

ZHANG Kun, FU Zhiyong, ZHANG Linghan, YANG Wenhao, LAN Guanqi, ZHU Xiyu. Formula Design and Mechanical Properties of Three Kinds of Modified Raw Soil Materials Mixed with Solid Waste[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(2): 603-616.

References

[1] PARRACHA J L, LIMA J, FREIRE M T, et al. Vernacular earthen buildings from Leiria, Portugal-Architectural survey towards their conservation and retrofitting[J]. Journal of Building Engineering, 2021, 35: 102115.
[2] 刘奕彤, 李广洲, 郭龙龙, 等. 改性生土材料最优配比试验研究[J]. 非金属矿, 2021, 44(2): 46-49.
LIU Y T, LI G Z, GUO L L, et al. Experimental study on optimum ratio of modified raw soil materials[J]. Non-Metallic Mines, 2021, 44(2): 46-49 (in Chinese).
[3] 张福鹏, 石磊, 柳思勉, 等. 国内生土建筑材料改性进展研究[J]. 铁道科学与工程学报, 2022, 19(10): 2919-2929.
ZHANG F P, SHI L, LIU S M, et al. Research on modification progress of raw soil building materials in China[J]. Journal of Railway Science and Engineering, 2022, 19(10): 2919-2929 (in Chinese).
[4] 王毅红, 梁楗, 张项英, 等. 我国生土结构研究综述[J]. 土木工程学报, 2015, 48(5): 98-107.
WANG Y H, LIANG J, ZHANG X Y, et al. Review of raw-soil structure in China[J]. China Civil Engineering Journal, 2015, 48(5): 98-107 (in Chinese).
[5] 王沛钦, 郑山锁, 柴俊, 等. 走向生土建筑结构[J]. 工业建筑, 2008, 38(3): 101-105.
WANG P Q, ZHENG S S, CHAI J, et al. To earth buildings and their structures[J]. Industrial Construction, 2008, 38(3): 101-105 (in Chinese).
[6] 王毅红, 董飞, 张坤, 等. 砾石与水泥改性生土材料配方优化研究[J]. 新型建筑材料, 2019, 46(8): 56-59+72.
WANG Y H, DONG F, ZHANG K, et al. Study on formulation optimization of gravel and cement modified soil materials[J]. New Building Materials, 2019, 46(8): 56-59+72 (in Chinese).
[7] 刘志华, 杨久俊, 陈兵. 磷石膏粉煤灰改性生土材料试验研究[J]. 粉煤灰综合利用, 2016, 29(1): 3-6+11.
LIU Z H, YANG J J, CHEN B. Experimental study on properties of modified raw soil material adding phosphogypsum and fly ash[J]. Fly Ash Comprehensive Utilization, 2016, 29(1): 3-6+11 (in Chinese).
[8] 沈万岳. 基于正交试验的生土改性材料最优配合比及其改性机理研究[J]. 硅酸盐通报, 2018, 37(11): 3712-3716.
SHEN W Y. Research on optimum mix proportion and modification mechanism of raw soil materials based on orthogonal tests[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(11): 3712-3716 (in Chinese).
[9] ACHENZA M, FENU L. On earth stabilization with natural polymers for earth masonry construction[J]. Materials and Structures, 2006, 39(1): 21-27.
[10] LIU B, MENG H N, PAN G H, et al. Properties and microstructure of blended cement containing activated iron tailings powder[J]. Advances in Cement Research, 2023, 35(6): 258-275.
[11] LI X Y, QIAO Y J, SHAO J H, et al. Sodium-based alkali-activated foams from self-ignition coal gangue by facile microwave foaming route[J]. Ceramics International, 2022, 48(22): 33914-33925.
[12] 刘刚, 封孝信, 胡晨光, 等. 利用铁尾矿制备陶粒研究[J]. 华北理工大学学报(自然科学版), 2021, 43(3): 49-54.
LIU G, FENG X X, HU C G, et al. Research on preparation of ceramsite with iron tailings[J]. Journal of North China University of Science and Technology (Natural Science Edition), 2021, 43(3): 49-54 (in Chinese).
[13] 武彦辉. 我国煤矸石的处置利用现状及展望[J]. 中国环保产业, 2019(1): 53-55.
WU Y H. Disposal and utilization of coal gangue and its prospect in China[J]. China Environmental Protection Industry, 2019(1): 53-55 (in Chinese).
[14] 张杨, 李远勋. 分析电石渣的综合利用[J]. 中国金属通报, 2022(8): 237-239.
ZHANG Y, LI Y X. Comprehensive utilization of carbide slag was analyzed[J]. China Metal Bulletin, 2022(8): 237-239 (in Chinese).
[15] 孙志勇, 林栋, 张芹. 中国铁尾矿资源的综合利用途径[J]. 自然资源情报, 2023(8): 1-5.
SUN Z Y, LIN D, ZHANG Q. Comprehensive utilization of iron ore tailings in China[J]. Natural Resources Information, 2023(8): 1-5 (in Chinese).
[16] 杨晓伟, 张爱生, 曲俊蓉, 等. 油田污泥基高强陶粒的制备及性能优化[J]. 硅酸盐通报, 2021, 40(1): 215-222.
YANG X W, ZHANG A S, QU J R, et al. Preparation and properties optimization of high strength ceramsite obtained from oily sludge[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(1): 215-222 (in Chinese).
[17] 中华人民共和国住房和城乡建设部. 土工试验方法标准: GB/T 50123—2019[S]. 北京: 中国计划出版社, 2019.
Ministry of Housing and Urban-Rural Development, People's Republic of China. Geotechnical test method standard: GB/T 50123—2019[S]. Beijing: China Planning Press, 2019 (in Chinese).
[18] 徐向宏, 何明珠. 试验设计与Design-Expert、SPSS应用[M]. 北京: 科学出版社, 2010.
XU X H, HE M Z. Experimental design and application of Design-Expert and SPSS[M]. Beijing: Science Press, 2010 (in Chinese).
[19] 刘芳. 掺入石子、砂子、水泥的改性生土材料抗压试验研究[D]. 西安: 长安大学, 2017.
LIU F. Experimental study on compressive strength of modified raw soil materials mixed with stones, sand and cement[D]. Xi'an: Changan University, 2017 (in Chinese).
[20] 湖南大学, 天津大学, 同济大学, 等. 土木工程材料[M]. 北京: 中国建筑工业出版社, 2002.
Hunan University, Tianjin University, Tongji University, et al. Civil engineering materials[M]. Beijing: China Building Industry Press, 2002 (in Chinese).
[21] 王兴仁, 张福锁, 杨靖一, 等. 现代肥料试验设计[M]. 北京: 中国农业出版社, 1996.
WANG X R, ZHANG F S, YANG J Y, et al. Modern fertilizer experimental design[M]. Beijing: China Agriculture Press, 1996 (in Chinese).
[22] 陈方. 苦瓜N、P、K配方施肥数学模型的建立[D]. 武汉: 华中农业大学, 2009.
CHEN F. Establishment of mathematical model for N, P and K formula fertilization of bitter gourd[D]. Wuhan: Huazhong Agricultural University, 2009 (in Chinese).
[23] 张坤, 卫杨杨, 邵鑫辉, 等. CT技术下掺煤矸石和电石渣的生土材料损伤演化及孔隙研究[J]. 科学技术与工程, 2023, 23(28): 12182-12192.
ZHANG K, WEI Y Y, SHAO X H, et al. Damage evolution and pore space of raw soil materials mixed with coal gangue and calcium carbide slag under CT technique[J]. Science Technology and Engineering, 2023, 23(28): 12182-12192 (in Chinese).