[Retracted] Experimental Testing on Mechanical, Durability, and Adsorption Dispersion Properties of Concrete with Multiwalled Carbon Nanotubes and Silica Fumes

Table 18

Impact resistance test results.

Identification of mix	Average number of drops for initial crack	Average number of drops at failure	Energy at initial crack () (N mm)	Energy at failure () (N mm)	Ductility index ()
Normal mix	301	305	6327517	6411604	1.01329
1 CNT	346	351	7273492	7378600	1.01445
2 CNT	367	372	7714947	7820055	1.01362
3 CNT	384	390	8072315	8198445	1.01562
5 SF	396	402	8324574	8450704	1.015
7.5 SF	338	342	7105319	7189405	1.01183
10 SF	352	366	7399622	7693925	1.03977