07-12-2017, 11:50 AM
Hi sir
I'm Praveen Kumar I want to self curing concrete project report Nd PPT so please send me that report to my mail praveenbhukya1995@
I do some project that topic so please send me that project report
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self curing concrete project report
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Hi sir
I'm Praveen Kumar I want to self curing concrete project report Nd PPT so please send me that report to my mail praveenbhukya1995@
I do some project that topic so please send me that project report
08-12-2017, 09:13 AM
When the mineral additives react completely in a mixed cement system, their demand for curing water (external or internal) can be much higher than in a conventional Portland cement concrete. When this water is not available, due to the overpercolation of the capillary porosity, for example, a significant autogenous deformation can occur (and at an early age).
Due to the chemical contraction that occurs during the hydration of the cement, empty pores are created within the cement paste, which leads to a reduction in its internal relative humidity and also to the contraction that can cause early cracking. This situation is intensified in HPC (compared to conventional concrete) due to its generally higher cement content, reduced water / cement ratio (w / c) and pozzolanic mineral mixtures (fly ash, silica fume). The empty pores created during self-desiccation induce tensions by contraction and also influence the kinetics of the cement hydration process, which limits the final degree of hydration. The resistance achieved by IC could be more than that possible under saturated curing conditions.
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