00486naa#a2200169#i#450# EN\\bibl\80685 20250403113046.4 2076-0655 20150625b2015####ek#y0engy0150####ca RUS RU On the sawtooth hardening of cement concrete Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2015 8 с. Journal article local Pshenichnyy G N tsilicates.ru