PREPARATION AND PERFORMANCE OF MICROORGANISM MINERALIZED STEEL SLAG CEMENTING MATERIAL
Journal Title: Topics in Intelligent Computing and Industry Design (ICID) - Year 2017, Vol 1, Issue 2
Abstract
In this paper, the steel slag-lime system was used to prepare steel slag products under the enzymatic action of microorganisms. The results showed that, after 3h carbonization, the compressive strength increased from 32.8MPa to 49.5MPa, the strength of steel slag products was improved obviously. By CT and other analytical tools, the mineralization depth of microorganism is obviously deepened, and the pore structure is optimized. The results show that the amount calcium carbonate significantly improved, the calcium carbonate filling in the pores around, the pore structure has been optimized, the strength has been improved. In addition, microorganisms have the role of loading and catalytic, on one hand, it can be a steady stream of carbon dioxide which transport it into the brick to happen sequestration, on the other hand, the secretion of the enzyme can significantly accelerate the hydration reaction rate of carbon dioxide, which will form more and more CO32- inside the brick, so a higher probability of Ca2 + and CO32- combining to generate CaCO3.
Authors and Affiliations
Haihe Yi, Chun xiang Qian
Keywords
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- EP ID EP409413
- DOI 10.26480/wsmce.01.2017.12.14
- Views 55
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