The results are interesting but the paper has some minor flaws. The percentage of self-citations should be reduced. Deficient literature review. Important papers are missing The electrical conductivity method was first suggested by Rassk & Bhaskar: Rassk, E.; Bhaskar, M. - Pozzolanic activity of pulverized fuel ash. Cement and Concr. Res. 5,1975, 363–376. Feng et al. also used the rapid method of Luxan to assess the pozzolanic properties of rice husk ash: Feng, Q.; Yamamichi, H.; Shova, M.; Sugita, S. - Study on the pozzolanic properties of rice husk ash by hydrochloric acid pretreatment. Cement and Concrete Research 34, 2004,pp.521-526. Tashiro et al. suggested that only 72h testing are required to assess the pozzolanic behavior with electrical conductivity if the lime-pastes were cure under steam at 70 °C. Mc Carter & Tran also mentioned that the calcium hydroxide consumption after 72h correlates with the electrical resistance of several artificial pozzolans. Tashiro, C.; Ikeda, K.; Inoue, Y. - Evaluation of pozzolanic activity by the electric resistance measurement method. Cement and Concrete Research 24, 1994, 1333-1139. McCarter, W.; Tran, D. - Monitoring pozzolanic activity by direct activation with calcium hydroxide. Construction and Building Materials 10, 1996, 179-184. The reviewer also does not understand why the review by Donatello et al. was not cited Donatello, S.; Tyrer, M.; Cheeseman, C. - Comparison of test methods to assess pozzolanic activity. Cement & concrete composites 32, 2010, 121-127. Reference 11 is not appropriate for an ISI journal The has a weak start. The paper should start with a short overview on the importance of pozzolans for sustainable construction. In line 113, statistics on the volume of FCC must be added. The chapter “Artificial pozzolans in eco-efficient concrete“p.105-122, Woodhead Publishing Limited, authored by M. Frías Rojas and M. I. Sánchez de Rojas Gómez mention 1100 ton/day.