The effect of styrene-butadiene rubber and ethylene vinyl acetate polymers on the mechanical properties of Engineered Cementitious Composites

Azadmanesh, Hadi; Hashemi, Seyed Amir Hossein; Ghasemi, Seyed Hooman

doi:10.1016/j.coco.2021.100656

Cited by 21 publications

(12 citation statements)

References 37 publications

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“…2 The mechanical behavior of ECC is excellent in bending, which is similar to the flexibility of the metals 3 but the flexibility of ECC depends on the fiber dispersion and mixing method. 4 The tensile strain in this composite reaches up to 8%. 5 The ECC consists of cement, water, fly ash, silica sand, water-reducing admixture, and fiber.…”

Section: Introductionmentioning

confidence: 89%

Effect of freeze and thaw cycle on the mechanical properties of engineered cementitious composites with un-oiled fibers containing liquid and solid polymers

Azadmanesh

Hashemi

Ghasemi

2022

Journal of Composite Materials

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Nowadays, the application of the engineered cementitious composites(ECC) is expected to highly develop. Due to the lack of access to oiled- polyvinyl alcohol (PVA) fibers in many parts of the world, the implementation of the ECC has contained many difficulties. In this study, to increase the mechanical properties of ECC with the use of un-oiled PVA fibers, the polymers of styrene butadiene rubber (SBR), and ethylene vinyl acetate (EVA) were taken into account to resolve the abovementioned issue. Herein, also in order to enhance the tensile and flexural properties of ECC, the cement was replaced by polymers. Accordingly, a total of 7 mix designs were planned to conduct the proposed tests. The compressive strength, uniaxial tensile strength, and three-point bending tests were performed on the ECC at their 28-day age with consideration of the freeze and thaw cycle. The results of this research illustrated that the use of polymers can enhance the tensile and flexural properties of the ECC with un-oiled PVA fibers. The tensile strain in this study increased by more than 3% after the application of the polymers. Furthermore, the compressive strength increased by more than 47 MPa, and the deflection at the mid-span reached more than 9 mm in the bending test. However, the results showed that the use of polymers was effective on the freeze and thaw cycle and almost preserved the mechanical properties of the ECC. SBR latex has higher compatibility with the ECC in comparison with EVA powder.

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Section: Introductionmentioning

confidence: 89%

Effect of freeze and thaw cycle on the mechanical properties of engineered cementitious composites with un-oiled fibers containing liquid and solid polymers

Azadmanesh

Hashemi

Ghasemi

2022

Journal of Composite Materials

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“…[21] Styrene butadiene latex is a kind of latex commonly used in cement. [22,23] It has developed rapidly in cementing additives and has become a research hotspot at home and abroad. [24] In Ramón's study, oilwell cement will be affected by the addition of styrene butadiene latex.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the elasticity of Silicate Cement Stone with anionic styrene-butadiene latex particles

Zheng

Liao

Peng

et al. 2023

Preprint

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To address the problems of brittleness and poor elastic deformation ability of Silicate Cement stone, anionic styrene-butadiene latex particles were prepared using emulsion polymerization with styrene, liquid polybutadiene, 2-acrylamido-2-methyl-1-propanesulfonic acid, and fumaric acid as raw materials. The dispersion properties of anionic styrene-butadiene latex particles in water were investigated, as well as the elastic enhancement effect of the particles in cement. The test results show that anionic styrene-butadiene latex particles have good dispersion performance in water, is not easy to agglomerate, and can improve the fluidity of cement slurry. The elastic modulus of anionic styrene-butadiene latex particles cement stone is 43.1% and 27.8% lower than that of blank cement stone and commercially available latex particles cement stone, respectively. The finding of the mechanism analysis demonstrate that the anionic styrene-butadiene latex particles can be filled in cement stones to increase the silicate cement’s elasticity, compactness, and resistance to external stress.

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“…Recently, various research studies have mixed functional polymers into cement composites in order to enhance the mechanical properties and durability of cement composites [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. Jo et al [ 11 ] examined the characteristics of polymer concrete using unsaturated polyester resins from recycled polyethylene terephthalate plastic waste and recycled concrete aggregate; they reported that the strength of polymer concrete increased as the resin content increased.…”

Section: Introductionmentioning

confidence: 99%

“…Ferdous et al [ 12 ] investigated the effect of the resin-to-filler ratio on the mechanical properties of epoxy-based polymer concrete, and they found that the resin-to-filler ratio significantly affects the spatial distribution of aggregates. Meanwhile, Azadmanesh et al [ 13 ] used a polymer of styrene butadiene rubber and ethylene vinyl acetate to improve the mechanical properties of Engineered Cementitious Composites (ECC) using unoiled fibers. Their findings showed that the use of polymers can significantly improve the tensile and flexural strength properties of ECC.…”

Section: Introductionmentioning

confidence: 99%

Strength, Carbonation Resistance, and Chloride-Ion Penetrability of Cement Mortars Containing Catechol-Functionalized Chitosan Polymer

et al. 2021

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There have been numerous recent studies on improving the mechanical properties and durability of cement composites by mixing them with functional polymers. However, research into applying modified biopolymer such as catechol-functionalized chitosan to cement mortar or concrete is rare to the best of our knowledge. In this study, catechol-functionalized chitosan (Cat-Chit), a well-known bioinspired polymer that imitates the basic structures and functions of living organisms and biological materials in nature, was synthesized and combined with cement mortar in various proportions. The compressive strength, tensile strength, drying shrinkage, accelerated carbonation depth, and chloride-ion penetrability of these mixes were then evaluated. In the ultraviolet–visible spectra, a maximum absorption peak appeared at 280 nm, corresponding to catechol conjugation. The sample containing 7.5% Cat-Chit polymer in water (CPW) exhibited the highest compressive strength, and its 28-day compressive strength was ~20.2% higher than that of a control sample with no added polymer. The tensile strength of the samples containing 5% or more CPW was ~2.3–11.5% higher than that of the control sample. Additionally, all the Cat-Chit polymer mixtures exhibited lower carbonation depths than compared to the control sample. The total charge passing through the samples decreased as the amount of CPW increased. Thus, incorporating this polymer effectively improved the mechanical properties, carbonation resistance, and chloride-ion penetration resistance of cement mortar.

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The effect of styrene-butadiene rubber and ethylene vinyl acetate polymers on the mechanical properties of Engineered Cementitious Composites

Cited by 21 publications

References 37 publications

Effect of freeze and thaw cycle on the mechanical properties of engineered cementitious composites with un-oiled fibers containing liquid and solid polymers

Effect of freeze and thaw cycle on the mechanical properties of engineered cementitious composites with un-oiled fibers containing liquid and solid polymers

Enhancing the elasticity of Silicate Cement Stone with anionic styrene-butadiene latex particles

Strength, Carbonation Resistance, and Chloride-Ion Penetrability of Cement Mortars Containing Catechol-Functionalized Chitosan Polymer

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