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Journal articles on the topic 'Polycarboxylate superplasticizer (PCE)'

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Published: 5 June 2025
Last updated: 2 August 2025

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1

Chuang, Po-Hsiang, Yu-Hui Tseng, Yunhui Fang, Miaomiao Gui, Xiuxing Ma, and Jinjing Luo. "Effect of Side Chain Length on Polycarboxylate Superplasticizer in Aqueous Solution: A Computational Study." Polymers 11, no. 2 (2019): 346. http://dx.doi.org/10.3390/polym11020346.

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Molecular dynamics simulations were carried out to study the conformations of polycarboxylate ether (PCE) superplasticizers with different side chain lengths in aqueous solution. For four types of PCE molecules—PCE1, PCE2, PCE3, and PCE4—the steric hindrance between the PCE molecules increased with increasing side chain length. The side chain length not only affects water mobility but also affects the distribution of water molecules in the system. Simulation results indicate that water molecules were trapped by the PCE molecules, reducing the diffusion properties. PCE molecules with long side
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2

Xia, Yuchen, Wei Shi, Shuncheng Xiang, et al. "Synthesis and Modification of Polycarboxylate Superplasticizers—A Review." Materials 17, no. 5 (2024): 1092. http://dx.doi.org/10.3390/ma17051092.

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The molecular-scale structural changes in polycarboxylic superplasticizer (PCE) can influence dispersion and water retention. Polycarboxylate superplasticizer, synthesized using different methods, may alter dispersion and water-reducing effects. The synthesis of PCE involves creating a novel macromolecular monomer with a controllable molecular mass, adjustable lipophilic, and hydrophilic moieties, as outlined in this study. This article reviews processes for synthesizing polycarboxylates and identifies the optimal method through orthogonal experiments to produce a modified polycarboxylate supe
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3

Deng, Zuiliang, Guimin Lu, Lefeng Fu, Weishan Wang, and Baicun Zheng. "Investigation of the Behavior and Mechanism of Action of Ether-Based Polycarboxylate Superplasticizers Adsorption on Large Bibulous Stone Powder." Materials 14, no. 11 (2021): 2736. http://dx.doi.org/10.3390/ma14112736.

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The aim of this paper is to study the adsorption behavior of polycarboxylate superplasticizers (PCE) on coarse aggregates with a property of high water consumption (above 2%). The coarse aggregates were ground into a powder to create large bibulous stone powder, and it was observed that significant amounts of the ether-based PCE were absorbed onto large bibulous stone powder. The adsorption rate immediately reached a maximum after 5 min and then gradually decreased until an equilibrium absorption was established after 30 min. Zeta potential, infrared spectroscopy, and thermogravimetric analysi
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4

Sua-Iam, Gritsada, and Natt Makul. "Effect of Superplasticizer Type and Dosage on early-Age Shrinkage of Portland Cement and Rice Husk Ash Pastes." Advanced Materials Research 450-451 (January 2012): 407–12. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.407.

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In this work, the effect of superplasticizer type and dosage on early-age shrinkage of ordinary Portland cement (OPC) and rice husk ash paste (RHA) was investigated. The OPC and RHA pastes with a water/binder materials ratio (W/B) by weight of 0.22 and various dosages of polycarboxylate ether-based superplasticizers (PCE) and sulphonated naphthalene formaldehyde condensates (SNF) were investigated. RHA was partially substituted of 0%, 10% and 20 % by weight of OPC. Volumetric shrinkages of the pastes at the first 72 hours of hydration have been found to range from 0.28 to 12.26 mm3/g and from
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5

Xiang, Shuncheng, Yingli Gao, and Caijun Shi. "Progresses in Synthesis of Polycarboxylate Superplasticizer." Advances in Civil Engineering 2020 (July 3, 2020): 1–14. http://dx.doi.org/10.1155/2020/8810443.

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The prerequisite to synthesize PCE was to prepare new macromonomers with controlled molecular mass, adjustable hydrophilic-lipophilic groups, long-chain alkyl groups, and large terminal hydroxyl groups as well. Structural modifications in the molecular scale of polycarboxylate superplasticizer (PCE) would lead to changes in properties of dispersion and water retention as well as enhancement in the compatibility of Portland cement and so on. This paper reviewed recent developments from synthetic methods of macromonomers as the initial step of production of PCE, PCE at room and elevated temperat
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6

Alya, Harichane, and Belalia Fatiha. "Influence of Polycarboxylate Superplasticizer on the Calorimetric and Physicomechanical Properties of Mortar." IgMin Research 1, no. 2 (2023): 133–35. http://dx.doi.org/10.61927/igmin128.

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The use of polycarboxylate ether superplasticizer PCE in the preparation of mortars and concretes influences the hydration kinetics and the amount of total heat released. This leads to a modification of certain properties of the mortar, namely workability, calorimetry and mechanical resistance. In this study two ether polycarboxylate superplasticizers with different chemical structures were used; they were incorporated at different dosages into a standardized cement-based mortar. The objective of this work is to study the effectiveness of these superplasticizers and to select the most compatib
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7

Torres, Anthony, Federico Aguayo, Srinivas Allena, and Michael Ellis. "Investigating the Rheological Properties of Ultra High Strength Concrete Made with Various Superplasticizers." Advances in Sciences and Engineering 11, no. 2 (2019): 95–100. http://dx.doi.org/10.32732/ase.2019.11.2.95.

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Ultra-High Strength Concrete (UHSC) is a high-strength and highly ductile material formulated to provide compressive strengths exceeding 130MPa. UHSC materials typically have a very low water-to-cementitious ratio (w/cm), which requires the use of superplasticizers to disperse the fine particles and to make the material workable for placing, handling and consolidating. Common examples of superplasticizer compositions include Polynaphthalene Sulfonate (PNS), Polymelamine Sulfonate (PMS) and Polycarboxylate Ether (PCE) based polymers. This study focuses on assessing the impact of various superpl
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8

Li, Nan, and Bei Ding. "The Performance of Low Air-Entraining Polycarboxylate Superplasticizer." Advanced Materials Research 1129 (November 2015): 361–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1129.361.

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A new low air-entraining polycarboxylate superplasticizer (denoted as L-PCE) was synthesized by using oxirane/epoxypropane (denoted as EO/PO) block-polyether as one of monomers. The molecular structure of EO/PO block-polyether monomer was characterized by proton nuclear magnetic resonance spectroscopy (denoted as 1H NMR). The pore parameters, workability, and compressive strength of the concrete added with L-PCE were compared to that added with conventional polycarboxylate superplasticizer (denoted as G-PCE) or the G-PCE compounding with defoaming agent. The results demonstrate that the air en
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9

Ali, Maisarah, Muhamad Zharif Ahmad, and Siti Asmahani Saad. "Effect of Polycarboxylate Ether (PCE) Addition to Physical and Mechanical Characteristics of High Performance Concrete." Advanced Materials Research 1115 (July 2015): 146–49. http://dx.doi.org/10.4028/www.scientific.net/amr.1115.146.

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Conventional concrete does not have durability and higher strength as produced by high performance concrete (HPC). It is known that the HPC possess the following three properties which are high workability, high strength, and durability. The introduction of polycarboxylate ether (PCE) superplasticizer was proved to enhance the workability of concrete even though at a lower water to cement ratio. The study was conducted to find the optimum dosage of PCE and to compare its compressive strength, physical characteristics and morphology of the HPC. The result of the test shows that the high perform
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10

Gu, Yue, Qian Ping Ran, Xin Shu, Cheng Yu, Hong Lei Chang, and Kai Lv. "Synthesis of SiO2-PCE Core-Shell Nanoparticles and its Modification Effects on Cement Hydration." Key Engineering Materials 711 (September 2016): 249–55. http://dx.doi.org/10.4028/www.scientific.net/kem.711.249.

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NanoSiO2 was widely used to modify the property of cementitious materials, however, for nanoparticles used in cement-based materials, key problem is the effective dispersion. The surface modification technology can be introduced to promote dispersion of nanoparticles in aqueous system, especially in cement pore solution, which possess high concentration of ions. In this study, at first, NanoSiO2-polycarboxylate superplasticizer (SiO2-PCE) core-shell nanoparticle was synthesized from silanized polycarboxylate superplasticizer and colloidal nanoSiO2 by the “grafting to” method, then SiO2-PCE was
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11

Guo, Guangming, Si Wu, Guoshan Liu, Fuyong Zhang, and Luyan Wang. "Synthesis and Performance of HPEG-AA-AMPS-HPA Polycarboxylate Superplasticizer." Journal of Physics: Conference Series 2737, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2737/1/012007.

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Abstract An clay-resistance and slump-retaining polycarboxylate superplasticizer (PCE-RC) was synthesized using macro-monomer HPEG with different molecular weight, acrylic acid (AA), 2-acrylamide-2-methacrylic acid (AMPS) and 2-hydroxy-1-methylethyl acrylate (HPA) via H2O2-NaHSO3 redox initiator system. Effects of the acid-ether ratio, HPEG molecular weight, the amount of AMPS and HPA on the properties of PCE-RC in cement were discussed and the optimal molar ratio of HPEG3000, AA, AMPS and HPA was 1:4.5:0.1:0.1. As-synthesized polycarboxylate superplasticizer PCE-RC was characterized by GPC an
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12

Lin, Xiaochen, Pohsiang Chuang, and Yunhui Fang. "The study on polycarboxylate superplasticizer with polyamine side chain using molecular dynamics simulation." Journal of Physics: Conference Series 2133, no. 1 (2021): 012013. http://dx.doi.org/10.1088/1742-6596/2133/1/012013.

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Abstract A new type of water-reducing agent, which contains polyamine side chains, has been theoretically studied utilizing molecular dynamics simulation (MD) in this research. The models of three types of water reducers in an aqueous solution, including SNF, PCE, and PCA, have been constructed, simulated, and analyzed. The results indicate that compared to the linear structure of SNF, the traditional PCE water-reducing agent has a stronger interaction with water molecules, so it has a better water-reducing effect. This stronger interaction is mainly provided by the side chain of PCE. PCA furt
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13

Wang, Zi Ming, Zi Chen Lu, Fang Lu, and Hui Qun Li. "Relationship between Structure and Performance of Polycarboxylate Superplasticizer." Key Engineering Materials 509 (April 2012): 57–64. http://dx.doi.org/10.4028/www.scientific.net/kem.509.57.

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The structure of the polycarboxylate superplasticizer (PCE) and the relationship between the structure and the performance of PCE were summarized and analyzed. Based on these results achieved so far, the consensus and the unified opinions were presented while the ambiguous and contradictory points were compared and discussed. Furthermore, the different effect on performance caused by different structure such as side chain length, degree of polymerization, side chain density, functional group were discussed systematically. Finally the existing problems and the measures to be taken in the future
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14

Liu, Xiao, Zi Ming Wang, Hui Qun Li, and Ting Li. "Mechanism and Application Performance of Slow-Release Polycarboxylate Superplasticizer." Advanced Materials Research 560-561 (August 2012): 574–79. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.574.

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A type of slow-release polycarboxylate superplasticizer (PCE) was prepared and its application performance and mechanism were studied systematically. The experimental results of cement and concrete showed that the prepared slow-release PCE can slowly play a dispersing role and finally achieve a good dispersing effect within 120 minutes. Its adsorption behavior on the surfaces of cement particles was measured by a total organic carbon (TOC) analyzer, displaying the validity of slow adsorption. The hydrate exothermic curves showed that the slow-release PCE only delayed the hydration but did not
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15

Kong, Tae-Woong, Hyun-Min Yang, Han-Seung Lee, and Chang-Bok Yoon. "Evaluations of All-in-One, Polycarboxylate-Based Superplasticizer with Viscosity Modifying Agents for the Application of Normal-Strength, High-Fluidity Concrete." Applied Sciences 11, no. 23 (2021): 11141. http://dx.doi.org/10.3390/app112311141.

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High fluidity concrete exhibits an excellent self-compacting property. However, the application of typical high-fluidity concrete is limited in the normal strength range (18~35 MPa) due to the large amount of binder. Therefore, it is important to solve these problems by adding a viscosity modifying agent (VMA) with a superplasticizer (PCE), which helps to improve the fluidity of the concrete. In addition, the rheology and stability of the concrete with VMA can be improved by preventing bleeding and segregation issues. Current studies focused on the physical phenomena of concrete such as the fl
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16

Liu, Xiao, Xiao Fei Song, Qi Feng Luo, et al. "Energy Saving Preparation and Evaluation of a Novel Polycarboxylate Superplasticizer." Materials Science Forum 1035 (June 22, 2021): 1006–12. http://dx.doi.org/10.4028/www.scientific.net/msf.1035.1006.

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A novel polycarboxylate superplasticizer (PCE) with energy saving preparation was elaborately designed and synthesized by using acrylic acid (AA), hydroxypropyl acrylate (HPA) and isopentenyl polyethylene glycol (IPEG) as monomers. To investigate the effects of the preparation method on the effectiveness of PCE, the PCEs were prepared from energy-saving method and common method respectively, and the hydration heat evolutions of the cement pastes containing these PCEs were comparatively probed. Furthermore, the working mechanisms of the PCEs by different preparations were identified via adsorpt
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17

Cao, Yang, and Hongte Wu. "Preparation and performance analysis of polycarboxylate superplasticizer modified with fluorine-containing monomer and silicon dioxide nanoparticles." Materials Express 14, no. 4 (2024): 605–13. http://dx.doi.org/10.1166/mex.2024.2665.

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With the development of technology, the performance requirements for building materials in the modern construction industry are increasing. Nanomaterials and polycarboxylate superplasticizers (PCE) have good applicability in this field. Therefore, we develop a composite material by incorporating a fluorocarbon surfactant (FS) as a shrinkage-reducing agent into the PCE and modifying it with silicon dioxide nanoparticles (nano-SiO2) (SiO2-FS-PCE). Moreover, we investigate the preparation, dispersity, flowability, rheological properties, adsorption performance, and microstructure of the SiO2-FS-P
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18

Sun, Chong, Guang Jun Zheng, Yao Bi, and Hui Zhou. "Synthesis for an Amide-Ester Type Polycarboxylate Superplasticizer and its Application in Concrete." Advanced Materials Research 989-994 (July 2014): 233–37. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.233.

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A new type of amide-modified polycarboxylate superplasticizer was synthesized by a two-step method: Firstly, a mixture of amidated and esterified products reacted by maleic anhydride and 2-aminoethanol was modified through Mannich reaction. Then, the modified product was reacted with Prenyl alcohol polyethenoxy ether (TPEG), acrylic acid and other monomers to obtain an amide-structured polycarboxylate superplasticizer. The molecular weight and molecular weight distribution were measured by Gel permeation chromatography (GPC). Lastly, the optimum AA to modified product ratio, initiator dosage a
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19

Wang, Zi Ming, Fang Lu, Zi Chen Lu, Hui Qun Li, and Xiao Liu. "Discussion on the Performance and the Reduction of Shrinkage Induced by Polycarboxylate Superplasticizer." Advanced Materials Research 687 (April 2013): 456–60. http://dx.doi.org/10.4028/www.scientific.net/amr.687.456.

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The shrinkage-reducing type polycarboxylate superplasticizer (SRPCA) has become a hot research issue both at home and abroad for its perfect water-reducing ability, outstanding shrinkage-reducing and slump retaining ability. The effect of ordinary polycarboxylate superplasticizer (PCA) and shrinkage-reducing PCA on the drying shrinkage of cement mortar was studied thoroughly in this paper. The result showed that the SRPCA can effectively reduce the drying shrinkage of cement mortar. Moreover, the shrinkage-reducing mechanism was discussed from the aspect of molecular structure to the solution
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20

Lin, Zeyu. "Synthesis and performance study of a highly dispersed HPEG-type polycarboxylate superplasticizer." Journal of Physics: Conference Series 2194, no. 1 (2022): 012028. http://dx.doi.org/10.1088/1742-6596/2194/1/012028.

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Abstract HPEG has long been widely used as an alternative to TPEG. In this study, a new high-performance HPEG-type polycarboxylate superplasticizer PCE-A was synthesized by using H2O2 and sodium hypophosphite/Vc redox initiation system to provide free radicals under aqueous polymerization conditions with HPEG and acrylic acid as the main raw materials. The results showed that the best performance of the synthetic polycarboxylate superplasticizer was achieved when the acid to ether ratio was 4.50, Vc was 0.25%, H2O2 was 0.80% and sodium hypophosphite was 1.7%, which could effectively reduce the
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21

Yang, Lei, Pengfei Wang, Shuqiong Luo, Yaxin Wang, and Shengye Xu. "Performance and Mechanism of Polycarboxylate Superplasticizer in Red Mud Blended Cementitious Materials." Polymers 17, no. 13 (2025): 1738. https://doi.org/10.3390/polym17131738.

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The utilization of red mud by blending it into cement paste is still facing poor workability issues due to the finer particle size and higher water absorption of red mud, which can be solved by the addition of polycarboxylate superplasticizer (PCE) to effectively maintain the working performance. However, the specific mechanisms by which different topologies of PCEs, in terms of water-reducing (WR)- and slump-retaining (SR)-type PCEs, influence red mud blended cement paste require further clarification. This research investigates the effect of WR-PCE and SR-PCE on the rheological properties, m
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Zhang, Yan, Huaqing Liu, Jialong Liu, and Ruiming Tong. "Effect of Sodium Hexametaphosphate and Trisodium Phosphate on Dispersion of Polycarboxylate Superplasticizer." Materials 12, no. 24 (2019): 4190. http://dx.doi.org/10.3390/ma12244190.

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Enhancement in dispersion of polycarboxylate superplasticizer (PCE) could be obtained by incorporating retarders in normal concrete. The generally believed reason was that the consumption of free water and polymer at the beginning was reduced by retarding cement hydration. This theory could not convincingly explain why sodium hexametaphosphate (SHMP) was able to promote the dispersion capacity of PCE, while trisodium phosphate (TSP) could not, despite that both TSP and SHMP could obviously retard the cement hydration. The adsorption behavior of PCE and phosphate was investigated and the mechan
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Liu, Xiao, Zi Ming Wang, Xu Liang, Jie Zhu, and Yang Zhang. "Preparation and Characterization of Polycarboxylate Superplasticizer Synthesized at Non-Aqueous Condition." Applied Mechanics and Materials 357-360 (August 2013): 1358–61. http://dx.doi.org/10.4028/www.scientific.net/amm.357-360.1358.

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Polycarboxylate superplasticizer (PCE) was synthesized in non-aqueous system to achieve the rapid transportation and convenient preparation. The results showed that, PCE using isopentenyl polyethylene glycol (TPEG) or isobutenyl polyethylene glycol (IPEG) as macromonomer exhibited excellent paste fluidities and retaining properties at 80°C and 75°C, respectively. Fourier Transform infrared spectroscopy (FTIR) measurement confirmed the polymerization between monomers. The synthesized PCE as solid state was dissolved into water to prepare the PCE solution, and its cement application performances
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Chen, Hao. "Study on Preparation of Slow-release Polycarboxylate Superplasticizer by Macromonomer EPEG at Room Temperature." Journal of Physics: Conference Series 2539, no. 1 (2023): 012041. http://dx.doi.org/10.1088/1742-6596/2539/1/012041.

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Abstract Slow-release polycarboxylate superplasticizer was synthetic under room-temperature conditions, a free radical copolymerization reaction occurred under the action of a redox initiator, and the optimal preparation process and temperature effect were discussed in detail. The results show that the best preparation process (EP-15) is: acid-to-ether ratio is 1.89, the amount of NaH2PO2 is 2.27%, the appropriate reaction temperature is 15-25°C, and the suitable macromonomer is EPEG-3000 of OXIRANCHEM. Tests have verified that compared to a commercially available slow-release polycarboxylate
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Kou, Zefeng, Kaijian Huang, Muhua Chen, Hongyan Chu, Linye Zhou, and Tianqi Yin. "Synthesis of Biomass Polycarboxylate Superplasticizer and Its Performance on Cement-Based Materials." Materials 18, no. 14 (2025): 3416. https://doi.org/10.3390/ma18143416.

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Polycarboxylate superplasticizer (PCE) is an important part of improving the overall performance of concrete. However, its synthetic raw materials are overly dependent on petrochemical products, and it also causes problems such as environmental pollution. With the development of the building material industry, the demand for petrochemical resources required for synthetic water-reducing agents will increase rapidly. Therefore, there is an urgent need to transition the synthetic raw materials of PCE from petrochemicals to biomass materials to reduce the consumption of nonrenewable resources as w
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Fang, Yun Hui, Yu Liang Ke, Hua Zhen Lai, Zhao Peng Wang, Li Na Zhong, and Xiu Xing Ma. "Study on the Synthesis, Properties and Characterization of EPEG Slump Retaining Typed Polycarboxylate Superplasticizer." Key Engineering Materials 905 (January 4, 2022): 325–30. http://dx.doi.org/10.4028/www.scientific.net/kem.905.325.

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The ethyl glycol vinyl ether polyoxyethylene ether (EPEG) is a new type of macromonomer to synthesize polycarboxylate superplasticizer (PCE), which has higher reactivity due to the unsaturated double bond and easily to polymerization. The EPEG slump retaining typed PCE can be synthesized by free radical polymerization though EPEG, acrylic acid and hydroxyethyl acrylate (HEA). The HEA had the greatest influence on slump retaining performance. High polymerization conversion rate of EPEG typed PCE was beneficial to improve the concrete performance.
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Xiong, Long, Guang Jun Zheng, Yao Bi, Cheng Fei Fu, and Shao Feng Wang. "Effect of Sodium Methylacrysulfonate upon the Molecular Weight and Performance of Polycarboxylate Superplasticizer." Advanced Materials Research 989-994 (July 2014): 91–96. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.91.

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The effect of sodium methylacrysulfonate (SMAS) upon the molecular weight, molecular weight distribution and polycarboxylate (PCE)’s dispersion and dispersion-retaining ability were investigated by Gel permeation chromatography (GPC) and test of the fluidity of cement pastes. The results showed that the dosage of SMAS was inversely proportional to the molecular weight of polycarboxylate, and a cubic equation relationship existed between the molecular weight of the polycarboxylate and the reciprocal of SMAS dosage. There was an optimum middle dosage of sodium methylacrysulfonate which could con
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Lin, Zhijun, Xiaofang Zhang, Zhanhua Chen, Yue Xiao, and Yunhui Fang. "Study on adsorption, rheology and hydration behaviours of Polycarboxylate(PCE) superplasticizer synthesized by different acid to ether ratio." Journal of Physics: Conference Series 2133, no. 1 (2021): 012007. http://dx.doi.org/10.1088/1742-6596/2133/1/012007.

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Abstract Polycarboxylate superplasticizer is synthesised by different acid to ether ratio, which is changing the main chain structure parameters, obtained different microstructures. The effect of different microstructure PCE superplasticizer on the fluidity of cement paste, rheological thixotropy, adsorption capacity and hydration heat are studied. The results show that dispersing performance in cement with acid to ether ratio of 3.5 is the best, the molecular weight and side chain density have rather little effect on the cement hydration process.
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Zhu, Jie, Zi Ming Wang, Xiao Liu, Xu Liang, and Hui Qun Li. "Research on Esterification Technology of Polycarboxylate Superplasticizer and its Cement Paste Fluidities." Applied Mechanics and Materials 405-408 (September 2013): 2857–60. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2857.

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The synthesis process of esterification products used for the preparation of polycarboxylate superplasticizier (PCE) was systematically investigated, and the influences of water dosage, the catalyst dosage, reaction time and inhibitor dosage on the esterification rate and cement paste fluidities were determined. The results showed that the esterification rate can reach more than 95% as the water-carrying agent of 70 g, catalyst-alcohol ratio of 0.07, reaction time of 7 hours, inhibitor-acrylic acid ratio of 0.03, respectively. The obtained esterification products subsequently copolymerized wit
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Tutal, Adrian, Stephan Partschefeld, Jens Schneider, and Andrea Osburg. "EFFECTS OF BIO-BASED PLASTICIZERS, MADE FROM STARCH, ON THE PROPERTIES OF FRESH AND HARDENED METAKAOLIN-GEOPOLYMER MORTAR: BASIC INVESTIGATIONS." Clays and Clay Minerals 68, no. 5 (2020): 413–27. http://dx.doi.org/10.1007/s42860-020-00084-8.

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AbstractConventional superplasticizers based on polycarboxylate ether (PCE) show an intolerance to clay minerals due to intercalation of their polyethylene glycol (PEG) side chains into the interlayers of the clay mineral. An intolerance to very basic media is also known. This makes PCE an unsuitable choice as a superplasticizer for geopolymers. Bio-based superplasticizers derived from starch showed comparable effects to PCE in a cementitious system. The aim of the present study was to determine if starch superplasticizers (SSPs) could be a suitable additive for geopolymers by carrying out bas
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Fu, Cheng Fei, Guang Jun Zheng, Kang Ling Li, Yao Bi, and Long Xiong. "Effects of the Carboxyl Density on the Properties of Polycarboxylate-Type Superplasticizer." Advanced Materials Research 989-994 (July 2014): 151–55. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.151.

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The effect of carboxyl density (the ratio of acrylic acid and polyoxyethylene ether) upon the performance, molecular weight, and monomer conversion rate of polycarboxylate (PCE) were investigated by slump test, Gel Permeation Chromatography (GPC) and High Performance Liquid Chromatography (HPLC), respectively. The results showed that with carboxyl density increased from 2:1 to 7:1, molecular weight of PCE increased from 7968.5 to 13930.1 and the molecular weight distribution coefficient increased from 1.5 to 2. The HPLC date indicated carboxyl density does not affect the rate of monomer conver
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Hussein, Farah, Saif Altai, and Asmaa Sami. "Workability adjustment and sensitivity of different fine cement mixtures to polycarboxylate ether-based superplasticizer." Journal of Applied Engineering Science 20, no. 2 (2022): 432–39. http://dx.doi.org/10.5937/jaes0-34663.

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From previous studies, the most effective superplasticizer on workability was the polycarboxylate ether-based superplasticizer (PCE). For example, when the optimum dose, corresponding to the highest strength, was slightly exceeded, there was a possibility of a sharp drop in strength, even if the segregation was not noticeable. At construction sites, however, the workability adjustment is required to control the slump loss. The question here is how sensitive are different fine cement mixtures that are differently blended with fine additions, like silica fume, to a small increment of this superp
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Liu, Xiao, Zi Ming Wang, Hao Wu, and Hui Qun Li. "Effects of Clay on Flow Properties of Polycarboxylate Superplasticizer and its Control Measure." Advanced Materials Research 690-693 (May 2013): 682–85. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.682.

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Polycarboxylate superplasticizer (PCE) was usually sensitive to clay in mortar or concrete. The flow properties of cement pastes and mortars for PCEs with either kaolin or bentonite were studied systematically. The results showed that bentonite had a stronger influence on PCEs performance than kaolin, even no fluidity when bentonite dosage was more than 2%. The adsorption amount of bentonite on PCE was about 5-10 times more than that of kaolin, and PCEs adsorption on clay was proportional to its sensitivity to clay. The influencing mechanism of clay on PCE was analyzed from the structures of k
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Liu, Xiao, Zi Ming Wang, Xu Liang, Jie Zhu, and Jue Zhao. "Synthesis, Cement Paste Fluidities and Molecular Weight Measurements of Polycarboxylate Superplasticizer by Bulk Polymerization." Applied Mechanics and Materials 405-408 (September 2013): 2778–81. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2778.

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The synthesis process of polycarboxylate superplasticizer (PCE) by bulk polymerization was investigated. Compared with BPO as initiator, PCE prepared by using AIBN as initiator exhibited better cement paste fluidities. PCE using isopentenyl polyethylene glycol (TPEG) or isobutenyl polyethylene glycol (IPEG) as macromonomer showed excellent fluidities and retaining properties at 80°C and 75°C, respectively. The fumaric acid was more suitable to copolymerize as the third monomer than maleic anhydride. The molecular weight measurements showed that the characteristics of molecular weight and its d
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35

Zhong, Lina. "Study on Preparation and Properties of Polycarboxylate Superplasticizer with Different Molecular Weight Methylallyl Polyoxyethylene Ether." Journal of Physics: Conference Series 2539, no. 1 (2023): 012056. http://dx.doi.org/10.1088/1742-6596/2539/1/012056.

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Abstract The molecular weight of the macromonomer has a great influence on the performance of the Polycarboxylate Superplasticizer (PCE). The PCE with different structures was prepared by using methylallyl polyoxyethylene ether (HPEG) with molecular weights of 2400, 3000, 4000, and 5000. The effects of PCE on the emptying time and the rheological properties of cement paste and the properties of concrete were investigated. The test results show that the emptying time of cement paste, the plastic viscosity ratio and the emptying time ratio of concrete inverted slump have a corresponding relation
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36

Swartz, Maverick, Willy Mbasha, and Rainer Haldenwang. "The Effect of a Blended Polycarboxylate Superplasticizer on the Rheology of Self-Compacting Concrete Paste." Applied Sciences 13, no. 7 (2023): 4148. http://dx.doi.org/10.3390/app13074148.

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High-strength-performing concretes (HSPC) have been used extensively due to new building requirements and their special properties suitable for modern cities. Superplasticizers (SPs) are essential components in the mix design of these concretes since they control their fresh properties and improve durability. In practice, superplasticizers are used to achieve a desired workability without increasing the water content by dispersing agglomerated cement particles. The aim of this research was to investigate the effectiveness of a blended polycarboxylate (PCE) superplasticizer on the rheological b
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37

Lai, Huazhen. "Study on the synthesis and properties of highly dispersed and high slump-resistant polycarboxylate superplasticizer." Journal of Physics: Conference Series 2951, no. 1 (2025): 012111. https://doi.org/10.1088/1742-6596/2951/1/012111.

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Abstract The first polymer containing phosphate groups was prepared by esterification of polyacrylic acid with polyethylene glycol phosphate. The second polymer was prepared by copolymerizing ethylene glycol monovinyl polyethylene glycol ether with hydroxy butyl phosphate methacrylate and acrylic acid. Then, the first and second polymers were uniformly mixed in proportion to prepare the highly dispersed and high-slump-resistant polycarboxylate superplasticizer (PCE-P). The structure of PCE-P was characterized by infrared spectroscopy (FTIR) gel chromatography (GPC) and concrete experiments. Th
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38

Li, Huiqun, Yan Yao, Ziming Wang, Suping Cui, and Yali Wang. "Influence of Monomer Ratios on Molecular Weight Properties and Dispersing Effectiveness in Polycarboxylate Superplasticizers." Materials 13, no. 4 (2020): 1022. http://dx.doi.org/10.3390/ma13041022.

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A series of polycarboxylate superplasticizer (PCE) polymers were synthesized from acrylic acid (AA) and isoprenyloxy polyethylene glycol ether (IPEG) at the mole ratios of 3.0, 4.2, 5.0 and 6.0. In this study, the molecular weight properties of PCE polymers were recorded by size exclusion chromatography with the time interval of 1 h. Mini slump test was used to detect the dispersing effectiveness of PCE polymer in cement paste. The results indicated that the reaction rate of monomers, conversion of 52IPEG macromonomer and molecular weight of PCE polymers increased with the general adding ratio
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39

Liu, Xiao, Jia Nan Guan, Yun Sheng Zheng, Zi Ming Wang, and Xiao Wei Ren. "Synthesis of High Performance Polycarboxylate Superplasticizer through Redox Initiation System and its Application in Concrete." Key Engineering Materials 723 (December 2016): 681–86. http://dx.doi.org/10.4028/www.scientific.net/kem.723.681.

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A high performance polycarboxylate superplasticizer (PCE) was successfully synthesized by a polymerization reaction among acrylic acid (AA), maleic anhydride (MA) and isopentenyl polyethylene glycol (IPEG) through redox initiation system. The composition and amounts of initiation system, and the ratio of monomers were investigated respectively. The proportion of IPGE: MA: AA: sodium methallyl sulfonate (SMAS): ammonium persulfate (APS): ascorbic acid (ASA) was determined as 1: 3: 1.5: 0.3: 0.015: 0.012. Moreover, the effect of polymerization temperature on PCE’s cement paste fluidity was studi
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40

Zhu, Shaohong, Yanmei Lin, Yuliang Ke, and Yunhui Fang. "Study on the Influence of Early Strength Polycarboxylate Superplasticizer on Early Performance of Concrete." Journal of Physics: Conference Series 2539, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1742-6596/2539/1/012027.

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Abstract A series of polycarboxylate ether (PCE) based superplasticizers with early-strength functional monomers were prepared to study the influence of early-strength PCE on the hydration heat of cement, early strength properties, and setting time of concrete. It was found that PCE containing DAC and UP-152 had the most obvious improvement in the early strength performance of concrete, greatly improved the dispersibility of cement particles, accelerated the formation of C-S-H gel, enhanced the early hydration performance, and early advanced the setting time of concrete. It can also reduce the
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41

Rindle, Olivia, and Torben Gädt. "Along the S‐Curve – How Superplasticizers Affect the Yield Stress of Cement Paste." ce/papers 6, no. 6 (2023): 614–20. http://dx.doi.org/10.1002/cepa.2914.

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AbstractIn cementitious systems, superplasticizers have two core purposes. On the one hand, they are used to lower the yield stress of a cement paste without changing the water to cement (w/c) ratio. On the other hand, they can reduce the w/c ratio without changing the yield stress. The relationship between slump flow and dosage of a superplasticizer containing cement paste can be described as an S‐curve. Below a critical dosage, the superplasticizer does not increase the flow. Above this dosage, the flow increases linearly until the saturation dosage is reached. Further addition of polymer wi
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42

Gädt, Torben, and Thomas Wagner. "Aspects of Admixture Research: On the Use of Machine Learning in Superplasticizer Chemistry." ce/papers 6, no. 6 (2023): 600–606. http://dx.doi.org/10.1002/cepa.2771.

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AbstractThe use of superplasticizers in concrete, especially polycarboxylate ethers (PCE), has delivered the ability to easily achieve low water to cement ratios and thereby either higher strength or lower cement contents. In the last years, significant progress has been made with regard to understanding the structure‐activity relationship of the interaction of PCE and cement. For example, scaling laws have been derived for the size of adsorbed PCE, the magnitude of the steric interaction force, for the retardation of cement hydration by PCEs and more recently for competitive adsorption. While
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43

Al-Luhybi, Ashtar, Nuha H. Al-Jubory, and Anas S. Ahmed. "Influence of Superplasticizer Dosage on Workability and Mechanical properties of Concrete made with Recycled Aggregate." Journal of Engineering and Technological Sciences 54, no. 5 (2022): 220502. http://dx.doi.org/10.5614/j.eng.technol.sci.2022.54.5.2.

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This study investigated the effect of adding a type of superplasticizer (polycarboxylate ether -PCE) on the workability and mechanical properties of concrete containing recycled coarse aggregate (RCA). The effect of increasing the PCE dosage while changing the water/cement ratio on RCA strength was also studied. To accomplish these goals, three groups of concrete mixtures were prepared. The variable in these groups was the water/cement ratio (0.53, 0.57, and 0.615). In each group, the natural aggregate was replaced by two proportions of RCA (50 and 100%) and different proportions of PCE were a
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44

Liu, Xiao, Xia Bing Bai, Qian Xu, Chun Lei Xia, Guang Hong Lai, and Jia Nan Guan. "Synthesis and Application Performances of Solid Polycarboxylate Superplasticizers Using Different Initiators." Materials Science Forum 993 (May 2020): 1367–72. http://dx.doi.org/10.4028/www.scientific.net/msf.993.1367.

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At present, the products of polycarboxylate superplasticizer (PCE) mainly present liquid state. Compared with liquid PCEs, solid PCEs have not only high storage stability, but also high water-reducing rate. Based on acrylic acid (AA) and isobutenyl polyethylene glycol (IPEG) as the main materials, a series of solid PCEs were synthesized under anhydrous condition by employing ammonium persulfate (APS), benzoyl peroxide (BPO), azobisisobutyronitrile (AIBN) and azobisvaleronitrile (ABVN) as initiators, and the effects of different initiators on the application performances of these solid PCEs wer
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45

Li, Shiyu, Xiao Liu, Yurui Xu, et al. "Synthesis and Performances of Shrinkage-Reducing Polycarboxylate Superplasticizer in Cement-Based Materials." Materials 15, no. 19 (2022): 7002. http://dx.doi.org/10.3390/ma15197002.

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Reducing or eliminating cracks caused by shrinkage of cementitious materials remains a daunting challenge for construction engineers. Drying shrinkage and autogenous shrinkage are the main shrinkage types in the service process of cement-based materials, which have a great impact on engineering applications. If cracks in concrete generate by drying or autogenous shrinkage, the mechanical properties, water resistance and durability of concrete will be also affected. It is an effective method to use chemical admixtures to inhibit the shrinkage of cement-based materials. Polycarboxylate plasticiz
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46

Batista, Giovanni dos Santos, Francisca Puertas, Antonio Shigueaki Takimi, Eleani Maria da Costa, and Marta Palacios. "Rheological Behavior of Oil Well Cement Slurries with Addition of Core/Shell TiO2@SiO2 Nanoparticles—Effect of Superplasticizer and Temperature." Materials 18, no. 2 (2025): 239. https://doi.org/10.3390/ma18020239.

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This study investigates the rheological behavior of oil well cement pastes (OWCPs) modified with core/shell TiO2@SiO2 (nTS) nanoparticles and polycarboxylate-ether (PCE) superplasticizers at different temperatures (25, 45, and 60 °C). Results show that nTS particles increased static and dynamic yield stresses and the apparent viscosity of the cement slurries due to an increased solid volume fraction and reduced free water availability. The increase in the slurry dispersion by adding PCE superplasticizers enhanced the effect of the nanoparticles on the rheological parameters. Oscillation rheome
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47

Ren, Jun, Hao Li, Ji Zhang, et al. "Effect of Salinity and Polycarboxylate Superplasticizer on Fresh Property of Seawater-Blended Cement." Polymers 15, no. 3 (2023): 541. http://dx.doi.org/10.3390/polym15030541.

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The salinity of seawater can affect the properties of mixtures of polycarboxylate superplasticizer (PCE) and seawater. The purpose of this research is to study the effect of different salinities of water on the property of seawater-mixed cement slurry. Two PCE types with different side chain lengths and acid–ether ratios were used. Their physicochemical properties were explained by nuclear magnetic resonance (NMR), size exclusion chromatography (SEC), Fourier transform infrared spectroscopy (FTIR), turbidimetry, and dynamic light scattering (DLS) analysis. The performance of the PCEs was measu
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48

Zhang, Liran, Wenqian Du, Dongmin Wang, et al. "Investigating the Effect of Microwave Induction on the Polymerization Rate of Polycarboxylate Superplasticizers." Polymers 16, no. 3 (2024): 322. http://dx.doi.org/10.3390/polym16030322.

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As a transmission medium and heating energy, microwave is widely favored due to its high efficiency, strong selectivity, and easy control. Here, the effects of different heating methods (conventional thermal induction (CI) and microwave induction (MI)) on the polymerization rate of polycarboxylate superplasticizer (PCE) were investigated. Compared with CI, MI significantly boosted the polymerization rate (by approximately 51 times) and markedly decreased the activation energy (Ea), from 46.83 kJ mol−1 to 35.07 kJ mol−1. The polar of the monomers and initiators in the PCE synthesis contributes
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49

Xiang, Shuncheng, Yansheng Tan, Yingli Gao, Zhen Jiang, Bin Liu, and Wei Zeng. "Bubble Evolution under the Action of Polycarboxylate and Air-Entraining Agent and Its Effects on Concrete Properties—A Review." Materials 15, no. 20 (2022): 7053. http://dx.doi.org/10.3390/ma15207053.

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In order to improve the performance of concrete, it is of great significance to have a better understanding the mechanism and main influencing factors of concrete bubble evolution under the action of polycarboxylate and air-entraining agents. In the present review, with respect to the generation, growth, stability, and rupture of concrete bubbles under the action of polycarboxylate and air-entraining agents, this paper discusses the influence of bubble characteristics on concrete performance and studies bubble regulation by air-entraining agents and polycarboxylate (PCE) superplasticizer. The
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50

Larsen, Oksana A., Svetlana V. Samchenko, Olga V. Zemskova, Andrey V. Korshunov, and Artyom A. Solodov. "Self-Compacting Mixtures of Fair-Faced Concrete Based on GGBFS and a Multicomponent Chemical Admixture—Technological and Rheological Properties." Buildings 14, no. 11 (2024): 3545. http://dx.doi.org/10.3390/buildings14113545.

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The use of superplasticizers in a self-compacting concrete mix without the addition of a foaming agent in practice leads to a well-known problem associated with increased air entrainment and promotes the formation of harmful large bubbles, high-void content, and ununiform appearance. This paper presents research on the properties of cement paste consisting of Ordinary Portland Cement (OPC), powder based on ground granulated blast furnace slag (GBBS), and superplasticizer. The methodology of this study was the estimation of flow diameter and flow time, as well as the evaluation of the rheologic
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