Effect of Methyl Cellulose/Poly(Acrylic Acid) Blends on Physico-Mechanical Properties of Portland Cement Pastes

Negim, El‐Sayed; Niyazbekova, Rimma; Bekbayeva, Lyazzat; Utelbayeva, Akmaral; Herki, B.A.; Merey, Nursultanov

doi:10.13005/ojc/330152

Cited by 6 publications

(5 citation statements)

References 12 publications

(16 reference statements)

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“…That is why dynamic characteristics that determine capacity of material to form solid frame represent a value. Moreover, dynamic characteristics determine conditions of formation fill finely divided materials that are directly depend on humidity of filler [5,6].…”

Section: Description Of Research Methodologymentioning

confidence: 99%

On the Issue of an Ash Microsphere Application as a Framework Forming Filler in Composite Materials

Atyaksheva

Niyazbekova

Sarsikeyev

et al. 2018

KEM

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Hollow aluminum and silica microsphere is a component of ash wastes from heat and power industry that today is widely used as a microaddition almost in all sectors of economy. It is used to improve properties of different materials and constructions or to produce advanced properties of these materials. Hollow aluminum and silica microsphere is non-reactive microaddition that determine its advantages in producing ecologically friendly materials and in providing materials with additional properties without changing the basic. In this paper research has been conducted on identifying the modulus of viscosity focused on the effect on the capacity to form structure links that are influence the properties of producing leak less framework. Modulus of viscosity is one of the main dynamic characteristics of fill finely divided materials that determine materials and constructions strength properties including the capability to form a rigid frame. The research was carried out to determine the correlation between the modulus of viscosity and the humidity of raw component in order to identify optimal conditions of material formation and producing an item with the highest level of durability and rigidity. Moreover, the paper revealed the connection between the modulus of viscosity and the size of non-reactive microaddition based on set humidity and the influence of the microaddition size on the trend in modulus of viscosity.

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Section: Description Of Research Methodologymentioning

confidence: 99%

On the Issue of an Ash Microsphere Application as a Framework Forming Filler in Composite Materials

Atyaksheva

Niyazbekova

Sarsikeyev

et al. 2018

KEM

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“…The results of water absorption of the cement pastes mixed with grafted copolymers decreased with the increasing of AA in the copolymer. This is attributed to deposited into the pore structure of the hardened cement pastes as results of the hydration process [30].…”

Section: Water Absorptionmentioning

confidence: 99%

Modification of chitosan as chemical admixture for cement pastes

et al. 2020

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T HREE different composition ratios of chitosan-g-acrylic acid, P[Ch-g-AA] were prepared in the presence of potassium persulphate as an initiator using free radical technique. The grafted copolymers were characterized through FT-IR, TGA, DSC, and SEM. The results showed that these grafted copolymers have a single glass transition indicating that these copolymers can form a miscible phase. The P[Ch-g-AA] exhibit thermal stability. SEM of the grafted copolymers showed no phase separation, when compared with the pure Ch. The effect of grafted copolymers on the physico-mechanical properties of cement pastes was investigated. The addition of water mixed with grafted copolymer to the cement, improves properties of cement pastes. As the ratios of AA in the grafted copolymer increases, the water-to-cement (WC) ratio, setting time as well as water absorption decreases. While The compressive strength was sharply increased at nearly all hydration ages.

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“…The shortest curing time was due to crosslinking agent of PVCV. In general, pot-life and cure time of primer syrups depend on many factors such as catalysis, temperatures and crosslinking agent 24,25,26,27 . Contact angle measured by producing a drop of liquid on the surface of dried primer film.…”

Section: Characterization Of Primer Filmsmentioning

confidence: 99%

The Effect of Poly vinyl chloride-co-vinyl acetate Crosslinking Agent on Mechanical Properties of Acrylic Primer for Concrete Substrate Application

Negim¹,

Irmukhametova²,

Bekbayeva³

et al. 2018

Orient. J. Chem

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Effect of addition 0.5 and 1% of poly vinyl chloride-co-vinyl acetate (PVCV) as crosslinking agent to acrylic syrup on mechanical properties of primer was studied. Acrylic syrup made from a methyl methacrylate monomer solution of terpolymers. Terpolymers were used based on methyl methacrylate, 2-ethylhexyl acrylate and methacrylic acid. Mechanical properties including pot-life, tensile strength, elongation, water absorption, contact angle and bond strength were investigated. The results showed that the addition of PVCV to acrylic syrup improved the mechanical properties of primer due to the presence of carbon-chlorine bonds which produce the dispersion forces. However, as the concentration of PVCV increases, the mechanical properties of primer increases. The primer syrup containing 65% 2-ethylhexyl acrylate and 1.0% PVCV has good bonding strength with concrete substrate around 2.05 MPa.

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Effect of Methyl Cellulose/Poly(Acrylic Acid) Blends on Physico-Mechanical Properties of Portland Cement Pastes

Cited by 6 publications

References 12 publications

On the Issue of an Ash Microsphere Application as a Framework Forming Filler in Composite Materials

On the Issue of an Ash Microsphere Application as a Framework Forming Filler in Composite Materials

Modification of chitosan as chemical admixture for cement pastes

The Effect of Poly vinyl chloride-co-vinyl acetate Crosslinking Agent on Mechanical Properties of Acrylic Primer for Concrete Substrate Application

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