English
Русский 69-81 p.
The use of secondary raw materials for the production of building materials is a modern trend in solving environmental problems. In the Republic of Crimea, dumps of secondary raw materials – phosphogypsum and lime dust – have accumulated in large quantities at various enterprises. The analysis of phosphogypsum, which has been in the dumps for more than 5 years, showed that by its quality indicators it can be attributed to the 2nd grade in accordance with GOST 4013-2019, and the specific effective activity of the material (Aeff) corresponds to the I class of materials, which makes it suitable for the production of gypsum binders. Prototypes-cylinders were made from a mixture of phosphogypsum with lime dust of 1:1 composition at a pressure of 30 MPa and then subjected to hardening according to three schemes, in order to separate the passage of various types of hardening and study each of them for the physico-mechanical properties of the resulting material. The analysis of experimental data made it possible to establish the effectiveness of simultaneous flow in the system of two types of hardening – carbonate and hydration for lime and phosphogypsum components of the raw mixture, respectively. As a result of the organization of a mixed type of hardening of gypsum-lime binder, samples with a compressive strength of 26.5 MPa and a softening coefficient of 0.63 were obtained within 90 minutes. The calcium carbonate formed in the process, which is the product of the reaction between calcium hydroxide and carbon dioxide, significantly increases the water resistance of the hydration products of gypsum binder. It is established that with an optimal combination of technological factors and hardening conditions, a significant increase in the physical and mechanical characteristics of the carbonized material is possible in a short time.
1. Ekolu S.O. A review on effects of curing, sheltering, and CO2 concentration upon natural carbonation of concrete. Construction and Building Materials. 2016. 127. P. 306 – 320.
2. Ruan S., Unluer C. Influence of mix design on the carbonation, mechanical properties and microstructure of reactive MgO cement-based concrete. Cement and Concrete Composites. 2017. 80. P. 104 – 114.
3. Possan E., Thomaz W.A., Aleandri G.A., Felix E.F., C.P. dos Santos A. CO2 uptake potential due concrete carbonation: A case study. Case Studies in Construction Materials. 2017. 6. P. 147 – 161.
4. Scrivener K.L., JohnV.M., GartnerE.M. Eco-efficient cements: Potential economically viable solutions for a low-CO2 cement-based materials industry. Cement and Concrete Research. 2018. 114. P. 2 – 26.
5. Jang J.G., Kim G.M., Kim H.J., Lee H.K. Review on recent advances in CO2 utilization and sequestration technologies in cement-based materials. Construction and Building Materials. 2016. 127. P. 762 – 773.
6. Hohryakov O.V., Hozin V.G., Harchenko I.YA., Gazdanov D.V. Cements of low water demand - the way of effective use of clinker and mineral fillers in concrete. Vestnik MGSU. 2017. 12. 10 (109). P. 1145 – 1152. (rus.)
7. Schneider M, Romer M, Tschudin M, Bolio H. Sustainable cement production-present and future. Cement and Concrete Research. 2011. 41 (7). P. 642 – 650.
8. Panesar D.K., Mo L. Properties of binary and ternary reactive MgO mortar blends subjected to CO2 curing. Cement and Concrete Composites. 2013. 38. P. 40 – 49.
9. Maddalena R., Roberts J.J., Hamilton A. Can Portland cement be replaced bylow-carbon alternative materials? A study on the thermal properties and carbon emissions of innovative cements. Journal of Cleaner Production. 2018. 186. P. 933 – 942.
10. Poellmann H. Mineralogical Strategies to reduce СО2 in the fabrication of alternative cements. Journal Cement and its Applications. 2016. Vol. 2. Pp. 89-101.
11. Petropavlovskaya V.B., Zavadko M.U. Improvement of efficiency of use of waste dust cleaning of basalt production. Vestnik of Tver State Technical University. Series «Building. Electrical engineering and chemical technology». 2020. No. 1 (5), pp. 25–33. (rus).
12. Petropavlovskaya V.B., Novichenkova T.B., Zavadko M.Yu. Strengthening the strength of gypsum building materials and products by forced carbonization. Bezopasnost' stroitel'nogo fonda Rossii. Problemy i resheniya. 2017. No. 1. Pp. 26–30. (rus).
13. Chernysheva R.A. Processing of phosphogypsum into high-quality binding materials. Building materials. 2008. №8. Pp. 4-7. (rus).
14. Bakhtina T.A., Lyubomirskiy N.V., Bakhtin A.S., Nikolaenko V.V. Obtaining construction materials based on the dolomite lime of accelerated forced-carbonization hardening. Vestnik MGSU. 2020. V. 15. Issue 1. P. 43-57. (rus).
15. Lyubomirskiy N.V., Bakhtin A.S., Bakhtina T.A., Nikolaenko V.V. Вuilding materials based on limestone dust and finely dispersed limestone. Building and Reconstruction. 2020. V.4 (90). Pp. 112-121. (rus).
16. Lyubomirskiy N., Bakhtin A., Fic S., Szafraniec M., Bakhtina T. Intensive Ways of Producing Carbonate Curing Building Materials Based on Lime Secondary Raw Materials. Materials. 2020. 13. P. 2304.
17. Van Balen K. Carbonation reaction of lime, kinetics at ambient temperature. Cement & Concrete Re-search. 2005. 35 (4). P. 647 – 657.
2. Ruan S., Unluer C. Influence of mix design on the carbonation, mechanical properties and microstructure of reactive MgO cement-based concrete. Cement and Concrete Composites. 2017. 80. P. 104 – 114.
3. Possan E., Thomaz W.A., Aleandri G.A., Felix E.F., C.P. dos Santos A. CO2 uptake potential due concrete carbonation: A case study. Case Studies in Construction Materials. 2017. 6. P. 147 – 161.
4. Scrivener K.L., JohnV.M., GartnerE.M. Eco-efficient cements: Potential economically viable solutions for a low-CO2 cement-based materials industry. Cement and Concrete Research. 2018. 114. P. 2 – 26.
5. Jang J.G., Kim G.M., Kim H.J., Lee H.K. Review on recent advances in CO2 utilization and sequestration technologies in cement-based materials. Construction and Building Materials. 2016. 127. P. 762 – 773.
6. Hohryakov O.V., Hozin V.G., Harchenko I.YA., Gazdanov D.V. Cements of low water demand - the way of effective use of clinker and mineral fillers in concrete. Vestnik MGSU. 2017. 12. 10 (109). P. 1145 – 1152. (rus.)
7. Schneider M, Romer M, Tschudin M, Bolio H. Sustainable cement production-present and future. Cement and Concrete Research. 2011. 41 (7). P. 642 – 650.
8. Panesar D.K., Mo L. Properties of binary and ternary reactive MgO mortar blends subjected to CO2 curing. Cement and Concrete Composites. 2013. 38. P. 40 – 49.
9. Maddalena R., Roberts J.J., Hamilton A. Can Portland cement be replaced bylow-carbon alternative materials? A study on the thermal properties and carbon emissions of innovative cements. Journal of Cleaner Production. 2018. 186. P. 933 – 942.
10. Poellmann H. Mineralogical Strategies to reduce СО2 in the fabrication of alternative cements. Journal Cement and its Applications. 2016. Vol. 2. Pp. 89-101.
11. Petropavlovskaya V.B., Zavadko M.U. Improvement of efficiency of use of waste dust cleaning of basalt production. Vestnik of Tver State Technical University. Series «Building. Electrical engineering and chemical technology». 2020. No. 1 (5), pp. 25–33. (rus).
12. Petropavlovskaya V.B., Novichenkova T.B., Zavadko M.Yu. Strengthening the strength of gypsum building materials and products by forced carbonization. Bezopasnost' stroitel'nogo fonda Rossii. Problemy i resheniya. 2017. No. 1. Pp. 26–30. (rus).
13. Chernysheva R.A. Processing of phosphogypsum into high-quality binding materials. Building materials. 2008. №8. Pp. 4-7. (rus).
14. Bakhtina T.A., Lyubomirskiy N.V., Bakhtin A.S., Nikolaenko V.V. Obtaining construction materials based on the dolomite lime of accelerated forced-carbonization hardening. Vestnik MGSU. 2020. V. 15. Issue 1. P. 43-57. (rus).
15. Lyubomirskiy N.V., Bakhtin A.S., Bakhtina T.A., Nikolaenko V.V. Вuilding materials based on limestone dust and finely dispersed limestone. Building and Reconstruction. 2020. V.4 (90). Pp. 112-121. (rus).
16. Lyubomirskiy N., Bakhtin A., Fic S., Szafraniec M., Bakhtina T. Intensive Ways of Producing Carbonate Curing Building Materials Based on Lime Secondary Raw Materials. Materials. 2020. 13. P. 2304.
17. Van Balen K. Carbonation reaction of lime, kinetics at ambient temperature. Cement & Concrete Re-search. 2005. 35 (4). P. 647 – 657.
Bakhtin A.S., Lyubomirsky N.V., Fedorkin S.I., Bakhtina T.A., Belenko G.R. The influence of forced carbonization on the properties of gypsum-lime systems based on secondary raw materials. Construction Materials and Products. 2021. 4 (6). P. 69 – 81. DOI: 10.34031/2618-7183-2021-4-6-69-81 https://doi.org/10.34031/2618-7183-2021-4-6-69-81