Improved MPS model for concrete creep under variable humidity and temperature

Yu, Ping; Duan, Yin; Fan, Qixiang; Tang, Shengwen

doi:10.1016/j.conbuildmat.2020.118183

Cited by 19 publications

(6 citation statements)

References 30 publications

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“…As listed in Table 2, the plastic viscosity for three kinds of mix proportions of grouting mortar was 2.14, 5.00, and 2.82 Pa•s, the mortar flow value within 5 seconds recorded by the camera was 245, 195, and 226 mm, respectively. The segregation resistance index y and segregation resistance coefficient α was described as Equations ( 24) and (25). The relationship between flow value and time with different plastic viscosity of minislump tests was shown in Figure 4.…”

Section: Resultsmentioning

confidence: 99%

“…The results show that this method can simulate the flow process of SCC in rock-filled bodies, predict the compactness of RFC, and ultimately provide a reference for the design and construction practice of RFC engineering [19][20][21]. The MPS method was also used to investigate the geohazard mechanism [22,23] and flow performances of concrete [24,25]. Thus, the numerical simulation method including MPS has been widely used in many geotechnical applications, such as mining engineering, tunnel engineering, and slope engineering [26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

et al. 2022

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Grouting mortar has widespread application in engineering because of the advantages of good durability, low cost, and environmental friendliness. To study the flowing properties of grouting mortar, laboratory minislump tests taking different rheological parameters of grouting mortar into consideration were conducted to obtain the flow time and flow pattern of grouting mortar. A modified MPS method (moving-particle semi-implicit method) introduced two sections of Bingham rheological, and segregation was proposed. The effects of the plastic viscosity on the flow state of mortar were studied, and the relationship between the plastic viscosity and the flowing time was established. The numerical results show that the modified MPS method can be used to predict the flow time and flow pattern of mortar in the template, and plastic viscosity has a great influence on the flow time of concrete, and with the increase of plastic viscosity, the time to flow to the specified area also increases. Moreover, the analysis of the rheological parameters can provide the basis for the design of mix ratio in the construction practice.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

et al. 2022

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“…To be able to test the reliability and accuracy of the temperature and humidity sensor, the researchers used the system in a total of 7 different environments [34]. 5 of the chosen environments target the reliability of the device in varying environments, which includes a school laboratory, a parking area with poor air circulation, a bakery, a public park, and an open-air food park [35,36]. Two setups were also made to target the maximum threshold set for the temperature and humidity sensor.…”

Section: Results and Discussion 51 Technical Analysis On Temperature And Humiditymentioning

confidence: 99%

Development of a portable electronic device for the detection and indication of fireworks and firecrackers for security personnel

Africa

Tan

2020

IJEECS

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The use of fireworks and firecrackers to celebrate festivities is a very common activity in the Philippines. But due to the lack of strict control and regulation, there are unwanted risks of accidents from occurring due to the poor handling and storage conditions of these devices. Proper monitoring is important to reduce any unnecessary risks imposed on human life and property. While existing storage monitoring devices exist, the developed prototype is designed to contain sensors that are more suited in monitoring the ideal conditions of where the fireworks are stored. Monitoring the climate conditions on these devices may seem trivial at first, but such climate change can involve a rapid rise in temperature that can accidentally ignite the fireworks and deal with catastrophic damage. Another concern is the rise of humidity that may alter that chemical characteristics of the gunpowder stored in the fireworks. Such changes may not have any noticeable effects until it arrives in the consumer, that may experience an unwanted and unintended change in the performance of the fireworks leading to accidents. Therefore, it is important for this device to properly monitor the surrounding area then indicate various forms of alarms as a method of redundancy.

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“…However, the MPS theory still has some shortcomings. The MPS theory was improved for concrete creep under a complex environment [16].…”

Section: Microprestress-consolidation Theorymentioning

confidence: 99%

Advances in the Deformation and Failure of Concrete Pavement under Coupling Action of Moisture, Temperature, and Wheel Load

et al. 2020

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The deformation and cracking of concrete will lead to various deterioration processes, which will greatly reduce the durability and service life of the concrete pavement. The relating previous studies and analysis revealed that the coupling action of environmental temperature, moisture, and wheel load will cause cracking and seriously affect the normal service and durability of pavement concrete. This paper presents theoretical and numerical state-of-the-art information in the field of deformation and failure of pavement concrete under coupling action of moisture, temperature, and wheel load and draws some conclusions. (a) Concrete is a typical porous material, moisture and heat transfer theory has obtained enough data to simulate the hygro-thermo properties of concrete, and the relationship between moisture and heat is very clear. (b) There are few studies on concrete pavement or airport pavement considering the coupling action of moisture, temperature, and wheel load. (c) Concrete pavement is subjected to hygro-thermal-mechanical coupling action in service, which has the characteristics of a similar period and its possible fatigue effect. (d) COMSOL software has certain advantages for solving the coupled hygro-thermal-mechanical of concrete.

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Improved MPS model for concrete creep under variable humidity and temperature

Cited by 19 publications

References 30 publications

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

Development of a portable electronic device for the detection and indication of fireworks and firecrackers for security personnel

Advances in the Deformation and Failure of Concrete Pavement under Coupling Action of Moisture, Temperature, and Wheel Load

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