Eco-Friendly Construction blocks from C&D Debris using the Innovative CO2 Sequestration Technique

Problem Landscape

Due to the demand on energy sources to produce electricity and for functioning of automobiles, the emission of CO 2 gas is being increased now-a-days. It is possible to use CO 2 gas and the constructive usage of this waste CO 2 gas emitted will take part in controlling of global warming. The application could be made for the production of blocks as its ability to form silica gel in reaction with the already available gel matrix in construction debris. This process functions as an internal curing which increases the micro structural property of the block and hence the durability of the block gets enhanced.

Here, the portable and fully automized CO 2 sequestration chamber (Patent filed No: 305934) was made from the fund provided by the Government of India. CO 2 gas is passed at a designed pressure in trial to the C&D mixture containing the binder, and hence the immediate hardening of pulverized particles takes place as a result of the chemical reaction between binder and carbon dioxide. This process will be effectively monitored by the CO 2 sensor which is fitted in the chamber and thus the continuous process could be well observed from the computer screen. Humidity probe is connected to the system in which the constant humidity was maintained during the production of blocks and the percentage of humidity will vary depend upon the trial. The blocks produced from the chamber was sun dried and tested for the various properties such as strength, microstructural, durability and cost-benefits. Therefore the outcomes of the carbonated blocks from the portable chamber reveal that it could be an efficient substitute to the conventional specimens.

Kindly watch the above video to get more information on the same. This project has been closely mentored by Dr.G.S.RAMPRADHEEP, Associate Professor at Kongu Engeering College.