Effect of Super-Absorbent Polymer (SAP) Incorporation Method on Mechanical and Shrinkage Properties of Internally Cured Concrete

Huang, Xingliang; Liu, Xiaoyu; Rong, Hongliu; Yang, Xiaolong; Duan, Yunsheng; Ren, Tingting

doi:10.3390/ma15217854

Cited by 12 publications

(12 citation statements)

References 42 publications

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“…It is found that when the environmental relative humidity was 65%, the compressive strength increased by 19%, and the permeability coefficient of concrete decreased by 30%. Huang et al [22] studied the effect of SAP on mechanical properties and shrinkage properties under different mixing methods, and found that partial pre-absorption method of incorporation had the least influence.…”

Section: Introductionmentioning

confidence: 99%

Effect of super absorbent polymer mixing method on shrinkage performance of cast-in-place concrete confined by existing concrete

Li,

Zuo,

Huang

et al. 2024

Mater. Res. Express

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To study the effect of different super absorbent polymer (SAP) mixing methods on mechanical and shrinkage properties of internal curing concrete, SAP mixing mode was used as the study variable, and simulated the bridge leveling structure. The flow performance test, mechanical performance test, free shrinkage test, restrained shrinkage test and scanning electron microscope observation test were carried out on the internal curing concrete. The influence of different mixing methods on the flow properties, mechanical properties, shrinkage properties and microstructure of internal curing concrete were analyzed. The results showed that the amount of mixing water had a great influence on the fluidity when adding pre-absorbent SAP; The effect of SAP on the mechanical properties is minimal when the dosage is 0.2% of the mass of cementing material; Pre-absorbent SAP has the best effect on improving shrinkage cracks of concrete; SAP stored water at the initial stage of hydration, promoted the generation of hydration products, prolong the hydration process, filled the gap inside the concrete, and improved the anti-cracking performance. It is recommended that SAP should be partially pre-absorbed.

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Section: Introductionmentioning

confidence: 99%

Effect of super absorbent polymer mixing method on shrinkage performance of cast-in-place concrete confined by existing concrete

Li,

Zuo,

Huang

et al. 2024

Mater. Res. Express

Self Cite

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“…Due to various practical problems, including the accumulation of air bubbles during construction, the resulting concrete is prone to shrinkage and cracking. The shrinkage of concrete could lead to many problems, such as volume stability, steel corrosion, structural leakage and damage, and even catastrophic collapse; therefore, it has a great influence on the building's structural health and service life [1]. For instance, the bridge guardrail is one of the important structural elements of a bridge and its cracking could be observed occasionally.…”

Section: Introductionmentioning

confidence: 99%

“…It was suggested that internal curing techniques were efficient to reduce the self-shrinkage of concrete and diminish the concrete cracking risk that originated from insufficient curing [2]. During the long-term service life of concrete, the pre-incorporated internal curing component could provide internal water to continuously cure the hardened concrete [1,3,4]. Such internal curing materials can be categorized into two types, i.e., organic and inorganic materials.…”

Section: Introductionmentioning

confidence: 99%

Reduction in the Constrained Shrinkage and Crack Risk of Different-Strength-Level Concretes with Saturated Ceramsite

Nan,

Zuo,

Han

et al. 2024

Buildings

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To reduce the shrinkage and cracking risk of concrete, internal curing technology was applied to modify concretes with different strength levels (C30 and C60) by incorporating saturated ceramsite. Three kinds of tests were carried out to study the effects of the incorporation of saturated ceramsite on the compressive strength, hydration temperature rise, and shrinkage behavior of the concretes, respectively. It was found that the internal hydration temperature rise of the concrete could be delayed and reduced due to the internal curing effect of ceramsite. Moreover, both the early-stage and long-term constrained shrinkage behavior of the internal cured concretes were monitored with embedded strain sensors and compared with free shrinkage behavior. For the C30 concrete system, with the incorporation of saturated ceramsite, its constrained shrinkage at 96 h was reduced greatly from 181 µε to 36 µε. Furthermore, the surface-attached-sensor method was also used to study the shrinkage behavior of the concrete beams and it was found that the sensor location affected the measured shrinkage values greatly. The model beams of both the C30 and C60 concrete systems shrunk significantly in the first month, and the highest cracking risk occurred in this period as well. The internal curing effect of saturated ceramite could significantly reduce the constrained shrinkage of the concrete beam, evidently diminishing the cracking risk. More importantly, compared to the ordinary concrete C30 system, it was revealed that such an internal curing effect was more effective in promoting the performance of the higher-strength concrete (C60). With this effect, the cracking risk of C60 concrete was reduced from 0.69 to 0.37 at 300 days and changed little from then on.

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“…The findings of the research have demonstrated that the aggregate that is obtained from waste glass can, in fact, be utilized fruitfully in the manufacturing of polymer concrete [ 21 , 22 ]. The application of super absorbent polymers (SAP), also referred to simply as SAP, is a technique that has proven to be extraordinarily effective in reducing the amount of autogenous shrinkage (AS) that takes place in high-performance concrete [ 23 , 24 ]. This technique is also sometimes referred to as SAP.…”

Section: Introductionmentioning

confidence: 99%

“…The concrete’s shrinkage can be efficiently improved by combining a SAP with preabsorbed water, and this combination produces a shrinkage reduction impact that is more pronounced than the effect produced by simply adding the SAP dry. Concrete can be efficiently prevented from cracking if a SAP is added to it [ 23 , 24 , 25 , 26 ]. This will enhance the microstructure of the concrete, which will improve its density as well as its resistance to cracking.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Mechanical Properties and Durability of Polymer Silica Fume Concrete with Vinyl Ester Resin

Farahani

Fakharian³

et al. 2023

Materials

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Polymer concrete, which contains silica fume powder and vinyl ester resin as two replacements for Portland cement, has improved mechanical properties and durability compared to ordinary concrete. Thus, this kind of concrete is considered to be a high-strength concrete that is resistant to corrosion and chemical attacks. In this paper, the effects of the combination of silica fume powder and vinyl ester resin as two Portland cement replacements on the workability and slump value, initial and final water absorption, compressive and tensile strength, and failure and fracture paths of the polymer concrete have been investigated. All investigations have been based on 16 different polymer concrete mixture designs. The results indicate that the optimum percentages for a combination of silica fume and vinyl ester resin, which has the maximum compressive strength (34.26 MPa) and the maximum tensile strength (4.92 MPa), are a combination of 10% silica fume and 5% vinyl ester resin. To evaluate the durability of polymer concrete, the water absorption of all mixture designs has also been measured. Accordingly, the mixture design, which includes a combination of 15% vinyl ester resin and 5% silica fume, has a minimum initial and final water absorption equal to 0.62% and 1.95%, respectively.

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Effect of Super-Absorbent Polymer (SAP) Incorporation Method on Mechanical and Shrinkage Properties of Internally Cured Concrete

Cited by 12 publications

References 42 publications

Effect of super absorbent polymer mixing method on shrinkage performance of cast-in-place concrete confined by existing concrete

Effect of super absorbent polymer mixing method on shrinkage performance of cast-in-place concrete confined by existing concrete

Reduction in the Constrained Shrinkage and Crack Risk of Different-Strength-Level Concretes with Saturated Ceramsite

Experimental Study on Mechanical Properties and Durability of Polymer Silica Fume Concrete with Vinyl Ester Resin

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