preparation and cement fluidity of slowrelease
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preparation and cement fluidity of slowrelease.

Preparation and Cement Fluidity of Slow-Release ...

High performance polycarboxylate-type superplasticizer (PCSP) was synthesized with acrylic acid (AA), polyethylene glycol allyl ether (APEG) and one monomer of methyl acrylate (MA), methacrylate acid

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Preparation and Cement Fluidity of Slow-Release ...

Excitingly, the maximum flow reached up to 394 mm at a water-cement ratio of 0.35 and this high fluidity could be simultaneously maintained for 2 h, which facilitated concrete transport over long ...

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Comparison of ester-based slow-release polycarboxylate ...

2021-11-13  The time-dependent fluidity retention of the cement slurry containing PCT is an essential aspect of their practical application. Thus, the dispersing effects of the polymers (PCT) were investigated by mini-slump tests, and the evolution of the fluidity of the cement paste was determined over time.

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Performance of a SlowRelease Type Carboxylic Polymer

Test results of the fluidity, Zeta potential and adsorption in cement paste show that the polymer SLPC has the remarkable anti-adsorbing and high fluid-retaining ability for enhancing fluidity of ...

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Preparation and dispersion properties of polycarbonate ...

2021-3-5  Referring to the fluidity of cement paste with PCE-1 to PCE-6, the dispersion properties of PCEs with different monomer ratios were discussed. As the initial fluidity data are shown in Fig. 6, the fluidity of cement paste improved significantly when PCEs were introduced. The fluidity of the blank samples without PCEs was 185 mm and the sample ...

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Preparation and performance of the ultra-high

2021-11-1  1. Introduction. Cement mortar is widely used in fields of masonry, plaster, repair and caulk, which is one of the commonly used cementitious materials [1,2].Ultra-high performance mortar (UHPM) has many advantages, such as early-high strength, high tenacity and quality, excellent durability [], and so on.The UHPM has a high engineering practicability, which can be used for rapid repair ...

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Preparation of sulfomethylated softwood kraft lignin as a ...

The sulfomethylated lignin with a higher charge density adsorbed more on cement particles and improved the fluidity of a cement paste more effectively than did commercial lignosulfonates. Adding 0.5 wt% of sulfomethylated lignin to the cement paste increased the fluidity of the paste from 65 mm to 200 mm, while the addition of 0.4 wt% of ...

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A novel branched claw-shape lignin-based polycarboxylate ...

2019-5-1  The fluidity retention of PCE-Ls was evaluated through the fluidity loss test of the cement paste with 0.15% PCE-Ls. The results were shown in Fig. 11. From Fig. 11, it can be seen that at 0.15% dosage, the initial fluidity of the cement paste with PCE-Ls is greater than that of PCE-B. In the first 90 min after preparation, the fluidity of the ...

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钢纤维形状对高性能混凝土性能的影响

2020-12-23  SUN Bochao. Preparation and volume stability of UHPC with high fluidity[D]. Harbin Institute of technology, 2015(in Chinese). [22] 焦楚杰, 孙伟, 高培正, 等. 钢纤维高强混凝土力学性能研究[J]. 混凝土与水泥制品, 2005(3):35-38. doi: 10.3969/j.issn.1000-4637.2005

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Performance of a SlowRelease Type Carboxylic Polymer

Test results of the fluidity, Zeta potential and adsorption in cement paste show that the polymer SLPC has the remarkable anti-adsorbing and high fluid-retaining ability for enhancing fluidity of ...

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Preparation and dispersion properties of polycarbonate ...

2021-3-5  Referring to the fluidity of cement paste with PCE-1 to PCE-6, the dispersion properties of PCEs with different monomer ratios were discussed. As the initial fluidity data are shown in Fig. 6, the fluidity of cement paste improved significantly when PCEs were introduced. The fluidity of the blank samples without PCEs was 185 mm and the sample ...

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Preparation, characterization and... preview related ...

1 天前  The application performances in cement showed that PCEs with the best paste fluidity retentions had the longest final setting time and the shortest setting time interval, and the PCEs with good fluidity properties can obviously delay the hydration process and lower the hydration heat.

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Preparation and properties of a low-cost magnesium ...

2021-10-4  Preparation and properties of a low-cost magnesium phosphate cement with the industrial by-products boron muds. ... The fluidity of MPC pastes prepared by calcined boron muds increased with increasing calcination temperatures. Typically, a higher calcination temperature would increase the size of calcined minerals and decrease the total ...

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Preparation of sulfomethylated softwood kraft lignin as a ...

The sulfomethylated lignin with a higher charge density adsorbed more on cement particles and improved the fluidity of a cement paste more effectively than did commercial lignosulfonates. Adding 0.5 wt% of sulfomethylated lignin to the cement paste increased the fluidity of the paste from 65 mm to 200 mm, while the addition of 0.4 wt% of ...

Get Price

Research on Preparation and Casting Construction ...

2020-9-11  In order to meet the requirements of the construction site, self-compacting concrete is mainly to find out how to reduce the water cement ratio to control the occurrence of shrinkage cracks on the premise of meeting the strength and fluidity of concrete, so as to achieve the balance between “high fluidity” and “high stability” of concrete.

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Research on Preparation and Casting Construction ...

2020-8-27  Hou, H., 2020. Research on preparation and casting construction technology of self-compacting concrete in marine climate environments. In: Bai, X. and Zhou, H. (eds.), Advances in Water Resources, Environmental Protection, and Sustainable Development. Journal of Coastal Research, Special Issue No. 115, pp. 1-3. Coconut Creek (Florida), ISSN 0749-0208.In order to meet the

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Study on Preparation and Near-Infrared Reflective ...

NaZnPO4 was prepared by heat-treating precursor with Zn(NO3)2٠6H2O、H3PO4 and anhydrous sodium carbonate as raw materials by co-precipitation method, and it was characterized with UV/VIS spectrophotometer、X-ray diffraction (XRD). The experiment results shown that the near-infrared reflection property of NaZnPO4 was very good. when the heat treatment temperature of preparation of

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3D 打印混凝土”专题文章推荐

2021-10-8  [英文] WEI W,YANG T.Study on Preparation and Properties of High Fluidity 3D Printed Cement-based Materials[J].China Concrete and Cement Products,2021(2):8-12. 【19】挤出型3D打印混凝土力学性能研究进展 引用本文:

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钢纤维形状对高性能混凝土性能的影响

2020-12-23  SUN Bochao. Preparation and volume stability of UHPC with high fluidity[D]. Harbin Institute of technology, 2015(in Chinese). [22] 焦楚杰, 孙伟, 高培正, 等. 钢纤维高强混凝土力学性能研究[J]. 混凝土与水泥制品, 2005(3):35-38. doi: 10.3969/j.issn.1000-4637.2005

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Performance of a SlowRelease Type Carboxylic Polymer

Test results of the fluidity, Zeta potential and adsorption in cement paste show that the polymer SLPC has the remarkable anti-adsorbing and high fluid-retaining ability for enhancing fluidity of ...

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Mechanism and Application Performance of Slow-Release ...

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 ...

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Preparation, characterization and... preview related ...

1 天前  The application performances in cement showed that PCEs with the best paste fluidity retentions had the longest final setting time and the shortest setting time interval, and the PCEs with good fluidity properties can obviously delay the hydration process and lower the hydration heat.

Get Price

Research on Preparation and Casting Construction ...

2020-9-11  In order to meet the requirements of the construction site, self-compacting concrete is mainly to find out how to reduce the water cement ratio to control the occurrence of shrinkage cracks on the premise of meeting the strength and fluidity of concrete, so as to achieve the balance between “high fluidity” and “high stability” of concrete.

Get Price

PAPER OPEN ACCESS Preparation and properties of ...

2020-5-2  2.3.1. Cement paste fluidity determination. Cement paste fluidity according to GB/T8077-2012 "Concrete admixture homogeneity test method" was carried out, W/C was 0.29, the amount of admixture is 0.20%, and the cement is Min Fu P.O 42.5 Cement. 2.3.2. Gel chromatography test. Waters 1515 was used. The column was connected in series by

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Preparation and Properties of a New Type of ...

Preparation and Properties of a New Type of Polycarboxylate Superplasticizer Containing Benzene Ring ... remarkable feature of FPC is that it has the strong adaptability to mud cement.The application results show that the fluidity of cement paste can reach 308 mm,and the initial and final setting time is 430 min and 502 min,respectively,and the ...

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Research on Preparation and Casting Construction ...

2020-8-27  Hou, H., 2020. Research on preparation and casting construction technology of self-compacting concrete in marine climate environments. In: Bai, X. and Zhou, H. (eds.), Advances in Water Resources, Environmental Protection, and Sustainable Development. Journal of Coastal Research, Special Issue No. 115, pp. 1-3. Coconut Creek (Florida), ISSN 0749-0208.In order to meet the

Get Price

Preparation and Characterization of Polycarboxylate ...

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.

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3D 打印混凝土”专题文章推荐

2021-10-8  [英文] WEI W,YANG T.Study on Preparation and Properties of High Fluidity 3D Printed Cement-based Materials[J].China Concrete and Cement Products,2021(2):8-12. 【19】挤出型3D打印混凝土力学性能研究进展 引用本文:

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谭洪波 - 武汉理工大学 - 材料科学与工程学院

He X., Zhi Z., Liu X. Improvement in fluidity loss of magnesia phosphate cement by incorporating polycarboxylate superplasticizer. Construction and Building Materials, 2018;165: 887-897. [2].

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