INFLUENCE OF SUPERPLASTIFYING ADDITIVES BASED ON POLYCARBOXYLATE ETHER ON THE TECHNOLOGICAL AND PHYSICAL-TECHNICAL PROPERTIES OF GYPSUM-CETMENT-POZZOLANIC BINDER-Reference-Cited by-同舟云学术

INFLUENCE OF SUPERPLASTIFYING ADDITIVES BASED ON POLYCARBOXYLATE ETHER ON THE TECHNOLOGICAL AND PHYSICAL-TECHNICAL PROPERTIES OF GYPSUM-CETMENT-POZZOLANIC BINDER

Published:2024-05-22 Issue:8 Volume:9 Page:20-28
ISSN:2071-7318
Container-title:Bulletin of Belgorod State Technological University named after. V. G. Shukhov
language:en
Short-container-title:

Author:

Qais H.¹,Bogdanov R.²,Morozova N.²,Mavlyuberdinov A.²,Suleymanova L.³

Affiliation:

1. University of Sana'a

2. Kazan State University of Architecture and Engineering

3. Belgorod State Technological University named after V.G. Shukhov

Abstract

Effective modifiers of the structure and properties of concrete based on gypsum-cement-pozzolanic binder are chemical additives. Among a wide range of chemical additives, superplasticizing additives can be distinguished. The most effective in terms of water-reducing effect, increasing the mobility and strength of concrete based on gypsum-cement-pozzolanic binder are superplasticizers based on polycarboxylate ethers. The paper presents studies of the influence of superplasticizing additives on the physical and technical properties of gypsum-cement-pozzolanic binder based on low-grade gypsum and cement binders, and a binary active mineral additive consisting of zeolite-containing marl and microsilica. It has been shown that the introduction of the studied modifiers makes it possible to improve the performance properties of products based on gypsum-cement-pozzolanic binder, which is expressed in an increase in compressive strength and an increase in water resistance. Patterns of changes in water demand, setting time, and water-reducing effect of the gypsum-cement-pozzolanic binder mixture were obtained when it is modified with polycarboxylate additives of the following grades:“Melflux 2651 F”, “Polyplast type S”, “Polyplast type R”, “SPS-06”, “SPS-08”, “DK-100” and C-3 in comparison with unmodified HCPV, the change in strength with compression and softening coefficient of gypsum-cement-pozzolanic binder stone with these additives. It has been established that reducing the water requirement of the gypsum-cement-pozzolanic binder mixture by 60 % increases the compressive strength of gypsum-cement-pozzolanic binder stone samples by 33.5 MPa compared to the control composition. It has been shown that the most effective modifiers among those studied are “Polyplast type S” and “DK-100”.

Publisher

BSTU named after V.G. Shukhov

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