TAILIEUCHUNG - Drying effect of polymer-modified cement for patch-repaired mortar on constraint stress

Deterioration mechanism due to drying and shrinkage of patch-repaired regions in reinforced concrete structures is analytically investigated. The moisture diffusion coefficient of the repair materials was determined by varying the drying temperature and the polymer-tocement ratios of the polymer-modified cement mortar (PCM) in the experiment. It is found that the diffusivity of PCM increases in proportion to the polymer-to-cement ratio up to 10%. The constraint stresses due to drying at the repaired region were estimated by the couplelinear finite element analysis with respect to volumetric change, moisture diffusivity, water content and mechanical properties of the repair material. Based on the distributions of relative water contents and stresses, the effects of these parameters are discussed. The stress generated by drying and shrinkage was affected by substrate concrete, environmental condition and the properties of PCM. Of the repaired PCM tested, it is demonstrated that the CPM with 10% polymer-to-cement ratio generates the highest constraint stress. | Drying effect of polymer-modified cement for patch-repaired mortar on constraint stress

• Kiến trúc - Xây dựng
• Drying effect
• Polymer modified cement
• Patch repaired mortar
• Constraint stress
• Moisture diffusion coefficient
• Real environmental boundary conditions
• Various drying methods
• Drying time
• Various drying methods on drying time
• Quality of pomegranate
• Pomegranate (Punica granatum L ) arils
• Solar tunnel drying
• Drying of tomato slices
• Moisture content
• Drying rate
• Drying characteristics of tomato slices
• Moringa leaves
• Fluidized bed drying
• Tray drying
• Dehydration ratio
• Moisture ratio
• Sun drying
• Salt drying
• Kiln drying
• Quality characteristics of Pangasius hypophthalmus
• Different drying methods
• Pre treatments
• Drying air temperature
• Quality evaluation
• Superheated steam drying
• Ceramic drying
• Packed bed
• Ceramic particles drying process
• Superheated steam in the packed bed dryer
• Journal of Science and Technology
• Effect of hot drying on the chemical content
• Colour sensory quality of ginger powder
• Drying prediction model
• The colour parameters
• Experimental investigation
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• Quality characteristics
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• Forced convection hot air drying
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• Hot drying on the essential oil content
• Colour charactiristics of peppermint
• Drying kinetic colour model
• The qualities of dried peppermint
• Pineapple powder
• Solar drying
• Osmotic dehydration
• Quality attributes
• Hot air oven dryer
• Osmo dried papaya slices
• Self life
• Chemical activities
• Drying methods
• Selected green leafy vegetables
• Micronutrient content
• Nutritional parameters
• Greenhouse drying
• Paddy drying
• Head rice yield
• Brown rice yield
• Milling recovery
• Statistical analysis
• Drying technique
• Okara powder
• Physico chemical properties
• Drying techniques
• Partial root drying
• Soluble sugar
• Pericarp thickness
• Yield attributes of tomato
• Partial root drying on growth
• Effect of raw material variation
• process variables and device stability on drying process
• nephelium lappaceum l
• Pre treatment
• Salt solution
• Sun and oven drying
• Processed dried product
• Processed aonla (Emblica officinalis Gaertn )
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• Phenolic content
• Antioxidant activity
• β carotene content
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• Gravimetric water content
• Moisture depletion rate
• Drying pattern
• Soil moisture after saturation
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• Quality parameters
• Value added duck meat balls
• Duck meat balls
• Physico chemical characteristics
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• Dehydrated apricot fruits
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• Water activity
• Rehydration ratio
• Browning index
• Microbial count
• Sensory evaluation
• Tip drying
• Small onion
• Dew drops
• Management practices to tackle tip
• Small onion due to dew drops
• Quality of nutmeg
• Myristica fragrans
• Highest oleoresin
• Oil content
• Drying methods in the quality of nutmeg