Research on Mechanism of Sodium Silicate on Gas Quenching Steel Slag Cement

Abstract:

The sodium silicate has activation function on the macroscopic mechanical properties and microscopic structure of the gas quenching steel slag cement. Research results show that: Under the activation of the sodium silicate, when the content of the gas quenching steel slag cement is 30% to 40%, acid Salt, Portland cement grade 42.5 can be produced. Even when the content of gas quenching steel slag is improved to 50%, slag Portland cement grade P·S·A32.5 can still be produced. Seen from the hydration products, the sodium silicate reacts with the ions in the gas quenching steel slag, on one hand, initial framework is formed to enrich the network structure; and on the other hand, in the hydration process, a large number of C-S-H gel, ettringite crystal and a small amount of Ca (OH)₂ are formed, which improves the strength of cement.

• Periodical: Advanced Materials Research (Volumes 455-456)
• Pages: 382-388
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.455-456.382
• Online since: January 2012
• Authors: Yue Long, Hong Wei Xing, Yu Zhu Zhang, Gao Liang Li
• Keywords: Cement, Gas Quenching Steel Slag, Hydration Mechanism, Sodium Silicate, Strength

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