This tendency was also noticed while in the samples with s/c of 2.0 and one.0, and particularly, the toughness values on the 2CP2 and 1CP2 samples with big pores were being the lowest. Therefore, it can be judged that adequate thing to consider is needed with the formation of pores https://3d-printing-materials72468.fireblogz.com/65829531/about-concrete-retarder