Nanostructured Basaltfiberconcrete Exploitational Characteristics

[摘要] The article demonstrates that the mass use of basalt fiber concrete (BFC) is constrained by insufficient study of their durability and serviceability in a variety of environments. This research is aimed at the study of the basalt fiber corrosion processes in the cement stone of BFC, the control of the new products structure formation in order to protect the reinforcing fiber from alkaline destruction and thereby improve the exploitational characteristics of the composite. The research result revealed that the modification of basaltfiber concrete by the dispersion of MWNTs contributes to the directional formation of new products in the cement matrix. The HAM additive in basaltfiberconcrete provides for the binding of portlandite to low-basic calcium hydroaluminosilicates, thus reducing the aggressive effect of the cement environment on the reinforcing fibers properties. The complex modification of BFC with nanostructured additives provides for an increase in its durability and exploitational properties (strength, frost resistance and water resistance) due to basalt fiber protection from alkali corrosion on account of the compacting of the contact zone "basalt fiber - cement stone" and designing of the new products structure and morphology of cement matrix over the fiber surface.

[发布机构] Civil Engineering and Material Sciences Department, Perm National Research Polytechnic University, Kuybisheva str., 109, Perm; 614010, Russia^1

[学科分类] 土木及结构工程学

[关键词] Alkali corrosion;Corrosion process;Nano-structured;Reinforcing fibers;Research results;Structure and morphology;Structure formations;Water-resistances