Complex modification of light concretes on hollow microspheres for 3D printing technology
Abstract
With the development of 3D printing technology in construction, the development of effective building materials with specified performance properties for extrusion molding is becoming increasingly relevant. The article presents the results of the study of the influence of two prescription factors on the properties of light concretes on hollow microspheres by means of mathematical planning of the experiment. Experimental and statistical models describing the dependences of changes in the mobility of the concrete mixture, average density, bending strength, compression and shrinkage deformations of light concrete on the content of a solution of superabsorbing polymer (SAP), which provides hydration of Portland cement under unfavorable hardening conditions, and a dispersed reinforcing additive-polypropylene fiber, are obtained. The optimal ranges of fiber and SAP content were established, which are (in %): CFєI[1.19; 1.38] and CSAPєI[0.81; 1.25], respectively. The composition of light concrete on hollow microspheres, containing 1.25 % fiber and 1.25 % SAP, has the best physical and mechanical properties.
Keywords
About the Authors
Duong Thanh QuiViet Nam
Candidate of Sciences (Engineering)
E. V. Korolev
Russian Federation
Doctor of Sciences (Engineering), Vice-Rector for educational and methodological work
e-mail: prorector.umr@spbgasu.ru
A. S. Inozemcev
Russian Federation
Candidate of Sciences (Engineering)
e-mail: inozemcevAS@mgsu.ru
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Review
For citations:
Qui D.T., Korolev E.V., Inozemcev A.S. Complex modification of light concretes on hollow microspheres for 3D printing technology. Concrete and Reinforced Concrete. 2021;605(3):25-29.
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