Grey Model Research Based on the Pore Structure Fractal and Strength of NMR Aeolian Sand Lightweight Aggregate Concrete

Lei, Qian; Xiang‐dong, Shen; Wei, Lisi; Dong, Ruixin; Xue, Huijun

doi:10.1007/s11837-019-03887-w

Cited by 30 publications

(9 citation statements)

References 31 publications

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“…It focuses on the key technologies to realize the platform: pooled service, elastic cloud service and spatial information service. Aggregated pooling services mainly use the pooling mechanism to improve the responsiveness of platform services by creating object instances in advance [9]. Cloud API provided on the cloud computing platform (such as creating a virtual machine, starting a virtual machine at runtime, and obtaining the real-time status of a virtual machine) and on the basis of 4…”

Section: Results and Analysismentioning

confidence: 99%

“…Finally, with the continuous reform and progress of the water conservancy industry system, the system must also be able to be adjusted and improved in time. On the basis of current research, a research on the construction of a cloud computing-based hydraulic engineering structure platform is proposed [9]. We discussed the key technologies to realize the platform: pooled service, elastic cloud service, and spatial information service.…”

Section: Introductionmentioning

confidence: 99%

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Construction of Water Conservancy and Energy Engineering Structure Platform Based on Cloud Computing

Zhai

Ye³

2022

Wireless Communications and Mobile Computing

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In view of the current water conservancy engineering system in solving the problem of water conservancy spatial information sharing and repeated investment in the construction of GIS systems by various water conservancy business departments, the research on the construction of water conservancy engineering structure platform based on cloud computing is proposed. We discussed the key technologies to realize the platform: pooled services, elastic cloud services, and spatial information services. The aggregation pooling service mainly uses the pooling mechanism and improves the responsiveness of platform services by creating object instances in advance. Based on the Cloud API provided by the cloud computing platform (such as creating a virtual machine, starting a virtual machine at runtime, and obtaining the real-time status of a virtual machine) and the REST Admin API provided by the water conservancy basic service module, using cloud computing technology ideas, we designed and implemented elastic cloud service technology. Enable the water conservancy spatial information service platform to be deployed in the cloud computing environment, support cloud architecture, and provide flexible computing capabilities, because the three types of services have different requirements for CPU and network utilization, the weight coefficient can be assigned to them. The CPU slice map service is 0.1, the spatial query service is 0.3, and the spatial analysis processing service is 0.6. The network bandwidth slice map service is 0.5, the spatial query service is 0.3, and the spatial analysis processing service is 0.2. Reduce the waste of infrastructure resources; meet the concurrent access needs of a large number of users. Spatial information service aggregation is one of the core service capabilities of the platform; it can effectively aggregate multisource spatial information, generate new services, and provide new information.

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Section: Results and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Construction of Water Conservancy and Energy Engineering Structure Platform Based on Cloud Computing

Zhai

Ye³

2022

Wireless Communications and Mobile Computing

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“…It was found that the strength of the improved soil was positively correlated with the curing age, compaction coefficient, and cement strength grade [ 13 ]. Liu explored and found that, under the action of salt-freeze coupling, the unconfined compressive strength and pore volume of cement-modified aeolian sand showed a negative linear law, and the elastic modulus decreased with the increase of freeze-thaw times [ 14 ]. Chen studied the effect of cement content on the strength and deformation characteristics of aeolian sand foundation and believed that there is an optimal ratio between the natural moisture content of aeolian sand and cement content, which can significantly improve the strength and deformation performance of the original soil [ 15 ].…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Aeolian Sand Powder Addition on Frost Resistance of Concrete Pavement

Zhao

Deng

2022

International Journal of Analytical Chemistry

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In order to solve the problem of exploring the freeze-thaw characteristics of modified aeolian sand mixed with cement and silt, the authors propose a freeze-thaw cycle test of modified aeolian sand under the condition of mixing 5% cement and silt with different contents. In this experiment, under freeze-thaw conditions, its intensity decay and mass volume change law and the changes of freeze-thaw characteristics were comprehensively characterized by multiple indicators. The result shows that, after two freeze-thaw cycles, the compressive strength and peak strain of the improved aeolian sand were positively correlated with the silt content. With the increase of the number of freeze-thaw cycles, the compressive and antidestruction capacity of the improved aeolian sand with high silt content and low silt content decreased significantly. 15% silt content improves the structural stability of aeolian sand. It is proved that the authors’ experiment can intuitively and effectively reflect the change law of soil strength after freezing and thawing of such improved aeolian sandy soil, which has displayed significance.

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“…The T 2 spectral distribution can also reflect the proportion of pore size and corresponding pores. The existing literature shows that T 2 relaxation time is proportional to pore structure characteristics (Liu et al, 2020):…”

Section: Nuclear Magnetic Resonance Characterizationmentioning

confidence: 99%

Deterioration laws of concrete durability under the coupling action of salt erosion and drying–wetting cycles

Chen

Ren

et al. 2022

Front. Mater.

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To investigate the deterioration laws of concrete durability under the coupling action of salt erosion and drying–wetting cycles, this study evaluated the macro–performance evolution of concrete under different environments (NaCl, Na2SO4, and MgSO4). Several measuring methods including nuclear magnetic resonance, computerized tomography tests, and microscopic morphology analysis are employed to investigate the damage mechanism of concrete. Experimental results show that with the action of salt erosion and drying–wetting cycles, the mass loss rate of concrete decreased first and then increased, and the relative dynamic modulus of elasticity and the compressive strength increased first and then decreased. The porosity and the pore quantity fluctuation increased. During the whole erosion process, needle-like attack products were formed in the pores, the crystals gradually filled the pores, and generated expansion pressure on the pore wall. As a result, concrete damage gradually occurred. Consequently, the damage degree was greater. The degrees of concrete damage under drying–wetting cycles induced were arranged as MgSO4>Na2SO4>NaCl.

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Grey Model Research Based on the Pore Structure Fractal and Strength of NMR Aeolian Sand Lightweight Aggregate Concrete

Cited by 30 publications

References 31 publications

Construction of Water Conservancy and Energy Engineering Structure Platform Based on Cloud Computing

Construction of Water Conservancy and Energy Engineering Structure Platform Based on Cloud Computing

Effect of Aeolian Sand Powder Addition on Frost Resistance of Concrete Pavement

Deterioration laws of concrete durability under the coupling action of salt erosion and drying–wetting cycles

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