Eco-Friendly Self-Curing Concrete

Concrete technology has undergone a rapid improvement in the last two decades and internal curing of concrete has gained popularity and is progressing steadily from the laboratory to field. Water consumption has also been an issue and the scarcity of water is increasing exponentially too.

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In recent years the demand for construction materials has grown tremendously, so has the amount of construction and demolition waste, putting huge pressure on the environment. This has encouraged the use of recycled aggregate in concrete which not only allows for a more efficient life cycle of natural resources but also contributes to environmental protection leading to sustainable development. In this study, coarse recycled aggregate(RCA) are used in the production of self-curing concrete(SCC) in varying percentage replacements of natural coarse aggregate(NCA) from 0% to 100% with an increment of 20%.

Curing of concrete is the process of maintaining the optimum moisture content during the early ages of concrete in order to develop the desired strength properties. This process requires a large amount of water for so many days, so idea is to develop a self-curing concrete.

Project Description:

The main objective is to study the durability and strength of concrete, using Polyethylene glycol as a self-curing agent. Self-curing agent reduces the evaporation of water from the concrete and therefore increases the retention capacity of concrete. Polyethylene-glycol decreases the tension on the surface of the water and minimizes the water evaporation from concrete.

Project Implementation:

The implementation of this project starts with following simple steps:

1. Material:Take cement confirming to IS:1489 (PT 1):1991, Fine aggregate confirming to IS:383-1970, coarse aggregate of maximum size of 20mm and tested for strength as per IS:383:1970. Two concrete mix has to be made, one should be mixed with the curing agent and other without the curing agent. Workability test for normal conventional concrete and self-curing concrete must be done for the comparative analysis.
2. Non-destructive test: Rebound hammer test must be done. Compressive and Split tensile test must be done using cubes of size 150x150mm and cylinder of size 150mm diameter and 300mm height, compacting each layer with 25 blows.
3. Water absorption test: 10cm dia, 5cm height cylinder for 90 days of curing.
4. Durability Test : water sorpitivity test

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• Curing
• Concrete
• Cement

• Curing
• Cement
• Concrete Technology

Eco-Friendly Self-Curing Concrete