STUDY ON COMPARISON OF SELF CURING OF CONCRETE BY USING NORMAL COARSE AGGREGATE AND RECYCLED COARSE AGGREGATE
Curing is the name given to the procedure used for promoting the hydration of the cement and consist a control of temperature and moisture movement from the concrete. Curing allows continuous hydration of cement and consequently continuous gain in the strength, once curing stops strength gain of the concrete also stops. Proper moisture conditions are critical because the hydration of the cement virtually ceases when the relative humidity within the capillaries drops below 80%. Proper curing of concrete structures is important to meet performance and durability requirements. In conventional curing this is achieved by external curing applied after mixing, placing and finishing. Self-curing or internal curing is a technique that can be used to provide additional moisture in concrete for more effective hydration of cement and reduced self-desiccation. When concrete is exposed to the environment evaporation of water takes place and loss of moisture will reduce the initial water cement ratio which will result in the incomplete hydration of the cement and hence lowering the quality of the concrete. An experimental study carried out an investigated the use of water-soluble polyethylene glycol (PEG 6000) as self-curing agent. In this study compressive, tensile and flexural strength of self-curing concrete for 7 and 28 days and compared the use of different coarse aggregate (i.e. M35, M45 of normal coarse aggregate and recycled aggregate) and found out optimum strength.
Curing is the name given to the procedure used for promoting the hydration of the cement and consist a control of temperature
and moisture movement from the concrete. Curing allows continuous hydration of cement and consequently
continuous gain in the strength, once curing stops strength gain of the concrete also stops. Proper moisture conditions
are critical because the hydration of the cement virtually ceases when the relative humidity within the capillaries drops
below 80%. Proper curing of concrete structures is important to meet performance and durability requirements. In conventional
curing this is achieved by external curing applied after mixing, placing and finishing. Self-curing or internal
curing is a technique that can be used to provide additional moisture in concrete for more effective hydration of cement
and reduced self-desiccation. When concrete is exposed to the environment evaporation of water takes place and loss of
moisture will reduce the initial water cement ratio which will result in the incomplete hydration of the cement and hence
lowering the quality of the concrete.
An experimental study carried out an investigated the use of water-soluble polyethylene glycol (PEG 6000) as self-curing
agent. In this study compressive, tensile and flexural strength of self-curing concrete for 7 and 28 days and compared
the use of different coarse aggregate (i.e. M35, M45 of normal coarse aggregate and recycled aggregate) and found out
optimum strength.
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
International Journal of Research and Innovation (IJRI)<br />
Author<br />
Gajula Geetha,<br />
Research Scholar,<br />
Department of Civil Engineering,<br />
Aurora’s Technological and Research Institute,<br />
Hyderabad,India.<br />
Damera Ramachander,<br />
Associate professor,<br />
Department of Civil Engineering,<br />
Aurora’s Technological and Research Institute,<br />
Hyderabad,India.<br />
251
Change language