Reducing CO2 Emissions in the Production of Porous Fired Clay Bricks

journal article in Web of Science

English

A plan to reduce CO2 emissions is a priority these days. Brick industry contributes to the increase of these emissions mainly through the use of combustible pore-forming agents such as sawdust, cellulose, and coal sludge. These agents are used to improve the thermal insulation properties of brick products, and the suppliers regularly increase the prices of these agents based on their high consumption. Therefore, in an effort to reduce raw material expenses and CO2 emissions, brick manufacturers are looking for new possibilities while maintaining the quality of their products. This article discusses the possibility of using industrially manufactured product Vuppor as an additive as a replacement for combustible pore-forming agents. The presence of this additive in the fired clay body increases the proportion of pores, especially with a size range between 0.1 and 5 mu m, having a positive impact on the reduction of its thermal conductivity. With a 0.5 wt.% dose of Vuppor additive, the brick production costs and thermal conductivity can be reduced by 20% and 12%, respectively, while also achieving reductions in CO2 emissions over 60%. Consequently, the combustible pore-forming agents can be used in a more environmentally friendly manner, for example in the furniture industry, the biogas production, and the like.

brick; pore-forming agent; thermal conductivity; pore structure; production cost

ŠVEDA, M.; SOKOLÁŘ, R.

14. 11. 2017

KAUNAS UNIV TECH, KAUNAS UNIV TECH MATERIALS SCIENCE, K DONELAICIO G 73, KAUNAS, LT 44029, LITHUANIA

Kaunas, Lithuania

1392-1320

Materials Science

23

2

Republic of Lithuania

139

143

4