DMITRY MENDELEEV UNIVERSITY OF CHEMICAL TECHNOLOGY OF RUSSIA

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

All authors

1 Lime absorption

All authors

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

Issue 5/2021 MENDELEEV UNIVERSITY OF CHEMICAL TECHNOLOGY | BAUHAUS-UNIVERSITÄT WEIMAR

Composite gypsum binders with improved water resistance

1 Introduction In recent years the domestic industry has been in need of environmentally friendly and safe construction materials that can be produced at minimum energy consumption. These materials...

Issue 9/2017 WUHAN UNIVERSITY OF TECHNOLOGY | WUHAN TEXTILE UNIVERSITY

Chloride permeability of concrete applied with basalt fiber and nano-SiO2 modified mortar coatings

1 Introduction Marine environment can seriously corrode and destroy the concrete structure. Chloride ion erosion, sulfate erosion, carbonation, microbiological corrosion, dry and wet alternation, and...

Issue 4/2018 ISLAMIC AZAD UNIVERSITY

Experimental study of the effect of water-to-cement ratio on various properties of nano silica concretes with polypropylene fibers

1 Introduction The use of various additives in concrete and cement products has attracted special attention in recent years. So far, many researches have been carried out on fiber concrete, but...

Issue 5/2017 AU 2015307096 A1

Method to improve surface finish of gypsum covered with glass fiber mat

(22) 13.08.2015 (43) 23.03.2017 (57) A durable, moisture-resistant gypsum product is provided with smooth furnish which comprises a laminated glass fiber mat (30) in which glass fibers (12) are...

Issue 4/2015 WUHAN UNIVERSITY OF TECHNOLOGY

Application of new types of retarders in improving the properties of FGD gypsum

1 Introduction China is a developing country with coal as its main energy resource. The energy infrastructure is dominated by the coal fired power industry. Taking 2012 as an example, the yield of...