Abstract
AbstractAim of study was to verify the effect of temperature on the pozzolanic reactivity of thermally activated attapulgite and sepiolite samples. Activation temperatures were selected: 650, 700 and 750 °C for attapulgite and 800, 825 and 850 °C for sepiolite. Content of pozzolanic reactive SiO2 and Al2O3 after thermal treatment and the amount of Ca(OH)2 consumed in the pozzolanic reaction were measured. It should be noted that a higher activation temperature improves the reactivity of attapulgite and sepiolite. The upper limit for the increase in the pozzolanic reactivity of these materials is the formation of enstatite and the deactivation of silica. In addition to reactive decomposition products, series of minerals formed in the reactions of attapulgite and sepiolite with impurities present in them are also observed.
Funder
Akademia Górniczo-Hutnicza im. Stanislawa Staszica
Publisher
Springer Science and Business Media LLC
Subject
Physical and Theoretical Chemistry,Condensed Matter Physics,Polymers and Plastics,Materials Chemistry
Reference39 articles.
1. Massazza F. Pozzolana and pozzolanic cements. In: Hewlett P, editor. Lea’s chemistry of cement and concrete. 4th ed. London: Elsevier; 2003. p. 471–635.
2. La PV, Liotta L, Golewski GL. The role of pozzolanic activity of siliceous fly ash in the formation of the structure of sustainable cementitious composites. Sustain Chem. 2022;3:520–34.
3. Golewski GL, Szostak B. Strength and microstructure of composites with cement matrixes modified by fly ash and active seeds of C-S-H phase. Struct Eng Mech. 2022;82:543–56.
4. Amarnath Y, Rama Chandurdu C, Bhaskar DV. Influence of fly ash replacement on strength properties of cement mortar. Int J Eng Sci Technol. 2012;4:3657–65.
5. Ogawa K, Uchikawa H, Takemoto K. The mechanism of the hydration in the system C3S and pozzolan. Cem Concr Res. 1980;10:683–96.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献