DMITRY MENDELEEV UNIVERSITY OF CHEMICAL TECHNOLOGY OF RUSSIA

Effect of fibers on the properties of gypsum-cement-pozzolanic binder

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1 Lime absorption

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2 Influence of fibers on the strength characteristics of GCV (28 days of hardening)

3 Effect of fibers on the corrosion resistance of GCCPs in a salt fog chamber

4 Microstructure of gypsum-cement-pozzolanic stone: a-c – without fibers; d, e –
with polypropylene fiber; f – with polyacrylic fiber; g-k – with basalt fiber; l – with fiberglass. Curing time: 7 (a, d, f, g), 28 (b, h), 90 (i, j) and 365 (c, e, k, l) days

5 Basalt fiber: a – aluminosilicates skeleton in the section; b – is the original fiber; c – fiber after boiling in a saturated solution of lime; d – fiber after boiling in 5 % NaOH solution

6 Microstructure of basalt fiber: prior to boiling, the original fiber (a); after boiling in a saturated solution of gypsum binders (b), gypsum-cement-pozzolanic binders (c), Portland cement (d), lime (e) and 5 % NaOH (f)

7 Infrared spectra of basalt fiber: a – initial fiber, b – after boiling in a 5 % solution of NaOH, c – after boiling in a saturated solution of lime

This article describes the development of compositions, their structure and properties of such composite astringents. The results show that in composite gypsum binders there is no corrosion of basalt fiber. Thus, the study of the influence of various fibers on the structure and properties of the gypsum-cement-pozzolanic binder allows us to recommend compositions with basalt fiber.

1 Introduction

Products and structures made with binding materials are in widespread use nowadays. Meanwhile, modern applications call for the introduction of new structural and composite materials in conjunction with new technologies. Complex environmental conditions and new economic circumstances throughout the country predetermine a new approach to the creation, production and use of building materials of various functional purposes. At the same time, special attention should be paid to resource conservation, maximum use of local raw materials and wastes of various industries, increasing the...

TEXT Prof. Dr.-Ing. habil. Ekaterina Potapova, Engineer Anna Manushina, Andrey Urbanov, Dmitry Mendeleev University of Chemical Technology of Russia, Moscow/Russian Federation

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