Effect of VAE emulsion and inorganic fillers on the properties of styrene-acrylic emulsion based cement composite joint sealant

Wang, Zhihang; Xu, Jie; Meng, Xin; Huang, Zhe; Wei, Xia

doi:10.1016/j.conbuildmat.2021.122976

Cited by 6 publications

(4 citation statements)

References 15 publications

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“…Meanwhile, the microstructure of the 20 wt %-SAE-modified PAG cement was well distributed and dense, and the number of large pores and connected microcracks were considerably reduced, indicating that the polymer filled the pores in the microstructure of the modified cement. 13 Simultaneously, the polymer film and gel in the hydration products of the PAG cement formed a continuous network structure. 42 This continuous network structure was bridged with the crystals in the hydration products to form a whole, which effectively delayed microcrack generation and diffusion.…”

Section: Sem Analysis Of the Interior Of Pag Cement Mixed With Saementioning

confidence: 99%

“…11 Styrene-acrylic emulsion (SAE) can adapt to various environments and maintain stable properties owing to its excellent mechanical stability, chemical stability, and durability. 12,13 The glass transition temperature of SAE is lower than the cement hydration temperature, and SAE can form a polymer film in cement mortar, which is commonly used for modifying concrete and mortar. 14,15 Shi et al studied the effects of SAE on the mechanical properties of repair mortar.…”

Section: Introductionmentioning

confidence: 99%

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Effects of styrene–acrylic emulsion on bond performance and interface microstructure of repair mortar of ternary cementitious system

Shi,

Bu,

2024

J of Applied Polymer Sci

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This study investigates the effects of styrene–acrylic emulsion (SAE) as a modifier and interfacial agent on the interfacial bond performance of ordinary Portland cement–aluminate cement–gypsum (PAG) repair mortar. The hydration products and interfacial microstructure are analyzed via x‐ray diffraction (XRD), x‐ray photoelectron spectroscopy (XPS), Fourier‐transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The results demonstrate that the addition of SAE can effectively enhance the tensile bond strength and flexural bond strength of the PAG repair mortar, and the optimal addition amount of SAE is 10 wt%. The tensile and flexural bond strengths of the PAG repair mortar with SAE interfacial agent at 40% concentration are 1.38 and 1.34 times than those of the mortar without the interfacial agent, respectively. XPS and FTIR analyses reveal that the carboxyl groups in SAE and Ca2+ generated from cement hydration form Ca2+–carboxyl complexes. The SEM and XRD analyses indicate that SAE can alter the distribution and size of crystals at the bond interface and considerably reduce the thickness of the bond interface; however, SAE cannot change the type of hydration products at the bond interface.

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Section: Sem Analysis Of the Interior Of Pag Cement Mixed With Saementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of styrene–acrylic emulsion on bond performance and interface microstructure of repair mortar of ternary cementitious system

Shi,

Bu,

2024

J of Applied Polymer Sci

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“…The addition of polymer in ordinary concrete may improve many properties of concrete, e.g., deformation capacity, bond performance, waterproof performance and durability (Ferdous et al 2020;Sabău et al 2020). At present, polymer reinforced concrete is mainly used as structural repair agent, adhesive, waterproof material, corrosion resistant protection material, and etc., rarely as building material Wang et al 2021aWang et al , 2021b. The polymer reinforced concrete has not been used as a large volume of structural material, for its strength is not so high and its cost is higher than that of ordinary concrete (Dunaj et al 2020;Sokołowska 2020;Wang et al 2021aWang et al , 2021b.…”

Section: Introductionmentioning

confidence: 99%

“…At present, polymer reinforced concrete is mainly used as structural repair agent, adhesive, waterproof material, corrosion resistant protection material, and etc., rarely as building material Wang et al 2021aWang et al , 2021b. The polymer reinforced concrete has not been used as a large volume of structural material, for its strength is not so high and its cost is higher than that of ordinary concrete (Dunaj et al 2020;Sokołowska 2020;Wang et al 2021aWang et al , 2021b. Additionally, added alone, fiber can improve the strength and flexibility of concrete greatly, but in this case, there are obvious defects in the transition zone between fiber and matrix, for which most of the fiber is pulled out when the concrete is damaged, indicating that the effect of fiber has not been fully exploited (Congro et al 2019;Rai and Singh 2021;Tsiotsias and Pantazopoulou 2021;Al-Hamrani and Alnahhal 2021).…”

Section: Introductionmentioning

confidence: 99%

Polymer/Carbon Fiber Co-modification: Dynamic Compressive Mechanical Properties of Carbon Fiber Modified Polymer Reinforced Concrete

Wang,

Bai,

Liu

et al. 2024

ACT

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To explore the dynamic compressive mechanical properties of carbon fiber modified polymer reinforced concrete (CFMPRC), the 100 mm diameter SHPB (Split Hopkinson Pressure Bar) test system was used to carry out impact compression tests of CFMPRC with different carbon fiber volume content (0.1%, 0.2%, 0.3% and 0.4%). The dynamic stress-strain curves and fracture morphology of CFMPRC under different strain rates (37.7 s -1 to 132.2 s -1 ) were obtained, and the effects of strain rate and carbon fiber content on dynamic compressive strength, deformation and toughness of CFMPRC were analyzed. The results show that the dynamic compressive strength, deformation and toughness of CFMPRC have obvious strain rate strengthening effect and carbon fiber strengthening effect. The dynamic compressive strength, dynamic increase factor (DIF), dynamic peak strain and impact toughness of CFMPRC increase with strain rate gradually. The dynamic compressive mechanical properties of polymer reinforced concrete are improved by adding carbon fiber, and the optimal carbon fiber content is 0.2%. When carbon fiber content is 0.2%, the strain rate sensitivity of CFMPRC is the strongest, and the increase of strength is the maximum. Carbon fiber can bridge the internal cracks of concrete, and shows the co-modification effect with polymer. Polymer can enhance the carbon fiber/concrete matrix interface, which makes carbon fiber exert its effect more effectively.

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Effect of carbon fiber on the properties of polymer cement based building sealant

Wang

Bai

Ren

et al. 2022

J of Applied Polymer Sci

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The working property, bond property, and mechanical property of five kinds of polymer cement based building sealant (PCBS) with different carbon fiber content were tested. The effect of carbon fiber on the properties of PCBS was discussed by analyzing the variation of the leveling performance, consistency, low temperature flexibility, surface dry time, elastic recovery rate, tensile mechanical property, and shear mechanical property of PCBS with carbon fiber content. And the modification mechanism of carbon fiber on PCBS was interpreted using scanning electron microscopy and mercury intrusion porosimetry techniques. The results shows that PCBS still has good working property and bonding property with carbon fiber addition. As the carbon fiber content increases, the leveling performance and low temperature flexibility of PCBS are unaltered., the consistency increases, while the surface drying time and elastic recovery rate decrease. The tensile and shear mechanical properties of PCBS can be improved by adding carbon fiber. With the increase of carbon fiber content, the strength performance indexes of PCBS increase, while the energy consumption performance indexes first increased followed by a decrease. When the carbon fiber content is 0.1%, the properties of PCBS is the best. The pore structure of PCBS gradually deteriorates, and the total porosity and the percentage of macropores increase with carbon fiber addition. Carbon fiber primarily exerts cracking resistance and internal deterioration effects in PCBS.

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Effect of VAE emulsion and inorganic fillers on the properties of styrene-acrylic emulsion based cement composite joint sealant

Cited by 6 publications

References 15 publications

Effects of styrene–acrylic emulsion on bond performance and interface microstructure of repair mortar of ternary cementitious system

Effects of styrene–acrylic emulsion on bond performance and interface microstructure of repair mortar of ternary cementitious system

Polymer/Carbon Fiber Co-modification: Dynamic Compressive Mechanical Properties of Carbon Fiber Modified Polymer Reinforced Concrete

Effect of carbon fiber on the properties of polymer cement based building sealant

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