Experimental study on impregnation and consolidation effects of modified polyvinyl alcohol solution for coarse-grained soils: a case study on the Subashi Buddhist Temple Ruins of China

Zhang, Qiyong; Chen, Wenwu; Yuan, Pengbo

doi:10.1007/s10064-019-01622-y

Cited by 22 publications

(5 citation statements)

References 27 publications

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“…e feasibility of using the dipping method to protect the ruins of the Subashi Temple was studied, and it was recommended to use surface spraying and drilling dipping to resist weathering to protect the ruins [4]. Wang et al used the digital image correlation method to establish a two-dimensional discrete element model of the soil sample to simulate the influence of different end-face friction conditions on the stress-strain process of the sample.…”

Section: Relevant Research Work On the Protection And Reinforcement O...mentioning

confidence: 99%

Composite Nano-Calcium-Based Material for Reinforcement and Protection of Earthen Ruins in Humid Environment

Huang

Sun

et al. 2022

Advances in Materials Science and Engineering

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China is an ancient civilization. History has left us with a rich cultural heritage, of which ancient cultural sites account for a large proportion. As far as the current scientific research and technology are concerned, due to the particularity and complexity of the humid environment, the protection of ancient cultural sites in the humid environment is still an important topic before us. The research topic involved in this article is about the application of composite nano-calcium-based materials for the reinforcement and protection of soil sites in humid environments. Combined with the development of the research content of this article, the research thinking of the thesis is also adjusted accordingly, making the analysis and solution of the problem clearer. The first is a conceptual study, expounding the relevant concepts in this article. The main purpose is to sort out and study the reinforcement and protection measures and methods of relevant sites and ancient cultural sites, as well as the classification, characteristics, and protection value of ancient cultural sites. Through the analysis and research of these aspects, the composite nano-calcium bases for ancient cultural sites in the subsequent humid environment is proposed based on material basic information. The second is a descriptive research, qualitative and quantitative analysis of humid environment. On the basis of summarizing previous researches, this paper mainly conducts qualitative and quantitative analysis on the judgment of humid environment, the influence mechanism on ancient cultural sites, and the main diseases. Then, it is analytical research, studying the main diseases and causes of the underground palace site in the engineering case, and it is concluded that it is mainly affected by the combined effect of the characteristics of the site’s soil and the environment. Through the collection of data from the site survey, field test, and indoor experiment of the underground palace site, the preservation status of the site is collected, and the disease problems faced by the site were analyzed, making it more difficult to protect. The main problem facing the protection of soil relics in humid environment, that is, the research focus, is the research on the development and applicability of reinforcement protection materials. This article attempts to explore the protective effect of composite nano-calcium-based materials on wet sites. Practical research was conducted to verify the feasibility of composite nano-calcium-based materials in practice through indoor site soil simulation. After the completion of a series of experiments, the applicability and compatibility of the composite nano-calcium-based material to strengthen the wet site soil was verified through data analysis, data collection, and mechanism discussion. The experimental results show that the sample with a solid content of 0.4% composite nano-calcium matrix has better salt and alkali resistance. Moreover, the unconfined compressive strength growth rate of 0.4% of the samples has a qualitative improvement over other solid content samples.

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Section: Relevant Research Work On the Protection And Reinforcement O...mentioning

confidence: 99%

Composite Nano-Calcium-Based Material for Reinforcement and Protection of Earthen Ruins in Humid Environment

Huang

Sun

et al. 2022

Advances in Materials Science and Engineering

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“…According to the analysis of the calculation method of impact stress Eqs. (3)(4)(5)(6)(7)(8)(9)(10)(11), it is concluded that different rammer diameters (weight, cross-sectional area) and layer thicknesses mainly affect the internal friction angle and cohesion of the buffer layer. Therefore, the maximum impact stress must be corrected, and a parameter influence coefficient λ is derived.…”

Section: Theoretical Calculation and Analysismentioning

confidence: 99%

“…In 2013, there were 4106 sites in the seventh batch of national key cultural relics protection units announced by the State Administration of Cultural Heritage, of which nearly 1000 were rammed earthen sites. With the development of society, this traditional ramming technique has been gradually replaced or completely eliminated due to the emergence of new materials, especially concrete [5,6]. Moreover, these earthen sites are severely damaged by natural and human actions and need to be protected urgently.…”

Section: Introductionmentioning

confidence: 99%

Research on mechanical characteristics and energy dissipation of traditional ramming technology

Pei

Hou

et al. 2022

Herit Sci

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The ramming technique is a traditional method used to improve the compactness of soil with impact and vibration energy. Based on the measured data of ramming force transmission and dissipation, this study reveals the mechanism of energy transfer and dissipation of single-layer ramming as well as the law of variation with ramming quality, laying thickness, and ramming times. It also establishes the ramming model and empirical formula of ramming quality, laying thickness, and ramming times, introduces the ramming layer changes associated with the constitutive relationship (elastic to elastoplastic parts) as a function of ramming times, and determines the influence depth and horizontal range based on real-time data monitoring. It was found that as the mass of the rammer increases, the range of influence of the impact stress inside the earth also increases proportionally, and this effect is more pronounced vertically. However, the dissipation rate of energy in horizontal direction is much greater than in the vertical direction. The traditional stacked ramming technique of “chong hai wo, hang yin ding” can effectively eliminate the defects of horizontal reversal upwelling impact and unevenness of the ramming layer during the ramming process. The research results provide a theoretical basis for evaluating the quality of the traditional ramming technique.

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“…In terms of deterioration types and the occurrence environment of earthen sites, a classification system of the deterioration of earthen sites in arid and damp environments was built, and monitoring technology was developed. With regard to new protective materials, PS [24], grout calcined ginger nuts [25,26], ginger nut and Aga soil [27], SH [28], calcium-based liquid hydraulic hardening agent [29], inorganic bond materials [30], and organosilicon-modified acrylic resin non-aqueous dispersion [31] were invented and researched. Such research achievements were successfully applied in the protection projects of more than 200 National Key cultural relic protection units, having Recently, some research groups and scholars from the Getty Conservation Institute, USA, the International Scientific Committee on Earthen Architectural Sites under the International Council on Monuments and Sites (ICOMOS), the Catholic University of Peru, the University of Oxford, and the Nara Cultural Property Research Institute, Japan, have made rich academic achievements in the field of earthen site protection.…”

Section: Introductionmentioning

confidence: 99%

Key Issues and Research Progress on the Deterioration Processes and Protection Technology of Earthen Sites under Multi-Field Coupling

et al. 2022

Self Cite

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Since 2006, with the implementation of a series of national research projects in the field of earthen site conservation, the Chinese theoretical foundation and technological conservation system for the protection of earthen sites in arid environments has gradually formed. However, there are some global problems such as an unclear relationship between characteristics of diseases on sites and their existing environment, unclear deterioration mechanisms under multi-field coupling, immature stability control technology under dynamic loading, the poor suitability of protection process quality assessment equipment, and a lack of systematic research on comprehensive protection synergy mechanisms. On the basis of summarizing the research achievements in the field of earthen site conservation in China for more than 30 years, and a large number of practical experiences in earthen site reinforcement engineering, this paper expounds the multi-field coupling characteristics of earthen site construction technology, the climatic environment, and dynamic loading and protection measure activities, clarifies the main characteristics of the protection of earthen sites in China at present, puts forward the key scientific and technical problems existing in the conservation of earthen sites, constructs a picture of the research on the conservation of earthen sites under the action of multi-field coupling, and discusses the protection projects of earthen sites under different environments. We hope the technological system can provide support for the transformation of earthen site conservation from the rescuing conservation stage to the stage of both rescuing and preventive conservation, and move the foundation of earthen site conservation towards the stage of preventive protection.

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Experimental study on impregnation and consolidation effects of modified polyvinyl alcohol solution for coarse-grained soils: a case study on the Subashi Buddhist Temple Ruins of China

Cited by 22 publications

References 27 publications

Composite Nano-Calcium-Based Material for Reinforcement and Protection of Earthen Ruins in Humid Environment

Composite Nano-Calcium-Based Material for Reinforcement and Protection of Earthen Ruins in Humid Environment

Research on mechanical characteristics and energy dissipation of traditional ramming technology

Key Issues and Research Progress on the Deterioration Processes and Protection Technology of Earthen Sites under Multi-Field Coupling

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