PSI - Issue 70

Saravanakumar R. et al. / Procedia Structural Integrity 70 (2025) 319–326

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samples are once more dried, which triggers a new round of shrinking. Rapid swelling, which varies greatly depending on sample status: +90 m/m for samples that are not loaded and +160 m/m for those that are. The resulting material shrinkage does not exactly match the initial tendency when dried again after 365 days. [Yang Song et al., 2021]. In order to derive the precise data and quantitative information from this study. Two concrete samples were subjected to ventilation at 20 °C then 50% relative humidity after being cured for 16, 24, 48, and 1 month. Total, autogenous, and mass-loss shrinkage were tracked. At six-month, one-year, and four-year intervals, the carbonated depth was measured. The porosity in the edge samples significantly decreased between t0 = 16 and t0 = 48 hours [Hamza Samouh et al., 2017]. Mechanical and shrinkage properties were evaluated on eight plain Eco-Crete mixes and eight Eco-Crete combinations with fibre reinforcement. Fall for the non-FRC was amid 120 then 140 mm, while it is between 170 and 190 mm for the FRC. With a unit weight range of 2160 to 2330 kg/m 3 , the air content found to be 6% and 1.5% [Kamran Aghaee et al., 2021]. The primary goal of this work remained to mathematically explore the association between concrete heterogeneity and shrinkage. The two-phase meso-scale FE discretization of concrete was used for the investigation. The hydro-mechanical model serves as the foundation for mortar's constitutive law. The micro plane model is a representation of the mechanical component. Drying shrinkage, mortar deterioration brought on by loads, and concrete heterogeneity all interact strongly. After 249 days, the all-out drying reduction strain of 0.00041 was attained [Josko Ozboltetal., 2022]. The observation on self-curing concrete resulted in a reduction in concrete shrinkage. However, the chief emphasis of this work remained on how the curing procedure affected how much self-compacting overall. Examinations remained conducted on examples that had been raw, cured for three days, and cured for seven days. According to the results, the uncured specimens had the lowest long-term total shrinkage and the 7-day cured specimens had the highest long-term total shrinkage among all the concrete mixes tested. The improvement of structural porosity was associated with the larger overall shrinkage. The findings also demonstrate the importance of curing time in minimizing early-age shrinkage and showed that there is less mass loss in the cured specimens (3 or 7 days) than in the uncured specimens [Miguel José Oliveira et al., 2015] The strength increase and ventilationreduction and tiptoe characteristics of a novel prepackaged collectivefibrearmor-plated concrete employing leftover PP fibres and POFA were studied. Pre packed totals fiber reinforced real (PAFRC), a recently created real, is premixed thenlocatedcutting-edge the formworks with a special blend of rough aggregate and petite polypropylene (PP) fiber. The PAFRC examplesremained removed after the aquatic tank after 28 days then prepped aimed at shrinkage then creep testing.outcomes demonstrated that adding 20% POFA to the grout mixture enhanced its fluidity. When 20% POFA was added, the grout fluidity increased because the consistent w/b and c/s values of 0.5 and 1.15 were maintained. [FahedAlrshoudi et al., 2020] 3. Summary The fine clay brick aggregate contains pore water can be used for self-curing in concrete and it can hold on more water in the mix. It also reduces drying shrinkage and chloride-iron penetrability and increases resistance to freezing and thawing. Pumice, a light-weight aggregate, is employed internally as a curing agent, and it improves microstructure while reducing autogenic reduction. Slag residue and alkali-activated materials demonstrated superior performance in reducing autogenous shrinkage and cracking. A variety of internal curing and workability-enhancing agents were employed, including polyethylene glycol (PEG), super absorbent polymers (SAPs), lightweight aggregates, external coating polymers, liquid paraffin wax, and radish extract. The use of shale as a lightweight aggregate significantly improved concrete's compressive strength and durability by facilitating effective internal curing. Additionally, the incorporation of montmorillonite clay with coarse aggregates positively influenced early-age creep and cracking behavior, while enhancing the performance of the interfacial transition zone and mitigating shrinkage. Numerical analysis were verified and validated with experimental works. Pre-wetted, light-weight masses are used as interior curing materials for measurement of stress on shrinkage. Silica and silica filler are used as fine aggregates to improve shrinkage at ambient curing. Saturated lightweight sand (SLWS) for internal curing was tested for durability.