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Impact of Acid Ether Ratio of Polycarboxylate Ether on Early Strength Enhancement of Calcium Silicate Hydrate Seed
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Fengzhen LEI1, 2, 3, Lei LEI1, 2, 3, Yangyang KANG1, 2, 3, Caijun SHI1, 2, 3
Journal of the Chinese Ceramic Society | 2023, 51(7) : 1649 - 1659
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Journal of the Chinese Ceramic Society | 2023, 51(7): 1649-1659
• Research Articles •
Impact of Acid Ether Ratio of Polycarboxylate Ether on Early Strength Enhancement of Calcium Silicate Hydrate Seed
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Fengzhen LEI1, 2, 3, Lei LEI1, 2, 3, Yangyang KANG1, 2, 3, Caijun SHI1, 2, 3
Affiliations
  • 1.Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha 410082, China
  • 2.International Science Innovation Collaboration Base for Green & Advanced Civil Engineering Materials of Hunan Province, Hunan University, Changsha 410082, China
  • 3.Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China

    • LEI Fengzhen (1997-), female, Master candidate. E-mail:

About Author:

LEI Fengzhen (1997-), female, Master candidate. E-mail:

Published: 2023-06-09 doi: 10.14062/j.issn.0454-5648.20230129
Outline
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Adding calcium silicate hydrate seed-polycarboxylate ether (C-S-Hs-PCE) to cement-based materials can effectively improve the early strength. C-S-Hs-PCE can provide nucleation sites for the formation of a hydration product C-S-H gel, effectively promoting the generation of the C-S-H gel, and accelerating the process of cement hydration. The acid-ether ratio is an important structural parameter of comb-type PCE molecules, having an impact on the synthesis and early strength enhancement of C-S-Hs-PCE. This paper investigated the effect of acid-ether ratio on the particle size of C-S-Hs-PCE and the early strength of cement-based materials by using dynamic light scattering (DLS) particle size analysis, total organic carbon analysis, X-ray diffraction, low-field time-domain nuclear magnetic resonance, scanning electronic microscopy, isothermal calorimetry, and compressive strength tests, respectively. The results show that the C-S-Hs-PCE formed at a high acid-ether ratio PCE has a smaller particle size, which is more conducive to promoting the hydration of the silicate phase and the generation of calcium hydroxide and C-S-H gel, thereby accelerating the hydration of the paste, reducing the total porosity of mortar, and improving the early compressive strength of mortar, especially within 24 h.

acid-ether ratio  /  calcium silicate hydrate seed  /  particle size  /  early strength
雷凤珍, 雷蕾, 康阳阳, 史才军. 聚羧酸减水剂的酸醚比对水化硅酸钙晶种早强作用的影响. 硅酸盐学报, 2023 , 51 (7) : 1649 -1659 . DOI: 10.14062/j.issn.0454-5648.20230129
Fengzhen LEI, Lei LEI, Yangyang KANG, Caijun SHI. Impact of Acid Ether Ratio of Polycarboxylate Ether on Early Strength Enhancement of Calcium Silicate Hydrate Seed[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (7) : 1649 -1659 . DOI: 10.14062/j.issn.0454-5648.20230129
Appendix
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Year 2023 volume 51 Issue 7
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Article Info
doi: 10.14062/j.issn.0454-5648.20230129
  • Receive Date：2023-03-05
  • Online Date：2026-10-19
  • Published：2023-06-09
Article Data
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History
  • Received：2023-03-05
  • Revised：2023-03-27
Funding
Affiliations
    1.Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha 410082, China
    2.International Science Innovation Collaboration Base for Green & Advanced Civil Engineering Materials of Hunan Province, Hunan University, Changsha 410082, China
    3.Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China

Corresponding:

SHI Caijun (1963-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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