Polymer-modified cement mortars: Their enhanced properties, applications, prospects, and challenges

Zhang, Xijun; Du, Mingrui; Fang, Hongyuan; Shi, Mingsheng; Zhang, Chao; Wang, Fuming

doi:10.1016/j.conbuildmat.2021.124290

Cited by 68 publications

(29 citation statements)

References 75 publications

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“…Previous studies SEM analysis demonstrated that there is an enhancement in the bond strength between the polymer and the surrounding matrix. This result complies with the studies in the literature which reported the improved bond strength between the polymer and cement matrix, and therefore enhancement in the mechanical strengths [20,35,39]. Ultimately, it can be concluded that utilizing polymers may bring about compacted microstructure along with superior mechanical properties in UHPC mixtures.…”

Section: Sem Analysissupporting

confidence: 90%

“…Therefore, polymeric UHPC has favorable mechanical and durability properties due to the microstructure development and constituent composition. The kind and concentration of polymers and cement influence their hydration [20]. This is evident comparing the mixes incorporating 5 wt.% polymer with those with 20% polymer replacement.…”

Section: Capillary Water Absorptionmentioning

confidence: 97%

“…As the hydration process continues, the polymer matrix hydrolysate interacts with Ca(OH) 2 to develop a new network matrix. These crosslinked network structure materials connect both hydrated and anhydrate particles, boosting the structural morphology of the concrete matrix [20].…”

Section: Capillary Water Absorptionmentioning

confidence: 99%

“…To enhance the flexural strength and brittleness of ultra-high-strength cementitious matrices, organic polymers can be integrated into UHPC mixtures [20,21]. Various organic polymers, including ethylene-vinyl acetate, poly-acrylamide, methyl-cellulose, styrene acrylates, and styrene-butadiene latex, can prompt such beneficial effects [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Styrene-butadiene rubber latex, epoxy resin, and poly-acrylamide are among the polymers typically used in cementitious composites in the form of aqueous solutions or dispersible powders [30][31][32]. More recently, butyl benzene latex, carboxylic styrene-butadiene latex, neoprene matrix, styrene-acrylic matrix (SAE), and polyacrylate latex have been utilized in latex-cement mortars [20]. Butyl benzene latex modified cement mortars have indicated exceptional toughness while requiring less water when compared to different types of polymers.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Polymers on Behavior of Ultra-High-Strength Concrete

et al. 2022

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The development of ultra-high-performance concrete (UHPC) is still practically limited due to the scarcity of robust mixture designs and sustainable sources of local constituent materials. This study investigates the engineering characteristics of Styrene Butadiene Rubber (SBR) polymeric fiber-reinforced UHPC with partial substitution of cement at 0, 5 and 20 wt.% with latex polymer under steam and air curing techniques. The compressive and tensile strengths along with capillary water absorption and sulfate resistance were measured to evaluate the mechanical and durability properties. Scanning Electron Microscopy (SEM) was carried out to explore the microstructure development and hydration products in the designed mixtures under different curing regimes. The results indicated that the mixtures incorporating 20 wt.% SBR polymer achieved superior compressive strength at later ages. Additionally, the tensile strength of the polymeric UHPC without steel fibers and with 20% polymers was enhanced by 50%, which promotes the development of novel UHPC mixtures in which steel fibers could be partially replaced by polymer, while enhancing the tensile properties.

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Section: Sem Analysissupporting

confidence: 90%

Section: Capillary Water Absorptionmentioning

confidence: 97%

Section: Capillary Water Absorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Polymers on Behavior of Ultra-High-Strength Concrete

et al. 2022

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Enhancement of water and salt penetration resistance into mortar cement composited with vulcanized natural rubber compound

Jitkarune

Manantapong

Tangboriboon

2022

J of Applied Polymer Sci

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Vulcanized natural rubber compound plays an important role to be used as a reinforcement phase for mortar-cement-paste matrix. Natural rubber is an organic binder to increase good adhesion for the flexible-film formation and waterproof membrane within the mortar matrix. Adding sulfur as a curing agent into natural rubber latex can increase chemical bridge bonding within the mortar cement paste matrix. Embedding vulcanized natural rubber 30 wt% (PMC-30) with a sulfur curing system was employed to increase physical, chemical, thermal, and mechanical properties due to interconnective bonding. PMC-30 possessed low water absorption of less than 10%. After 28 days of curing, they possessed a high thermal shock resistance, a low percentage of salt solution absorption, and no thermal deterioration. The mortar composite embedded with the vulcanized natural rubber compound 30 wt% (PMC-30) was an alternative mortar composite formula suitable for use in the seawater, beaches, and salt contact areas due to the lowest percentage of salt solution absorption (1.94%), low water absorption (3.17% ± 0.74), good thermal shock resistance, and the highest flexural strength (6.72 ± 0.39 MPa). Therefore, adding the vulcanized natural rubber compound in mortar cement is a good way to improve the flexural strength and water resistance of mortar cement.

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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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Polymer-modified cement mortars: Their enhanced properties, applications, prospects, and challenges

Cited by 68 publications

References 75 publications

Effect of Polymers on Behavior of Ultra-High-Strength Concrete

Effect of Polymers on Behavior of Ultra-High-Strength Concrete

Enhancement of water and salt penetration resistance into mortar cement composited with vulcanized natural rubber compound

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

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