EFFECT OF SILANE MODIFIED POLYCARBOXYLIC SUPERPLASTICIZER ON FLUIDITY AND MECHANICAL PROPERTIES OF CEMENT MORTAR

Authors

  • Song Xiongfei 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan
  • Huang Haoliang 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan
  • Song Xuemin 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan
  • Hu Jie 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan
  • Wei Jiangxiong 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan
  • Yu Qijun 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan
  • Guzal Anvarovna Kasimova 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan
  • Azizbek Davlatali Ugli Nurmirzayev 1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2 Guangdong Low Carbon Technologies Engineering Center for Building Materials, Guangzhou 510640, China 3 Center for Advanced Technologies, Tashkent, Uzbekistan 4 Center for Regulation in Construction, the Republic of Uzbekistan Ministry of Construction, Uzbekistan

Keywords:

polycarboxylate superplasticizer (PCE); silane modification; molecular structure; Fluidity; mechanical strength

Abstract

The performance of concrete slurry is a very important factor in the construction engineering. In this paper, based on silane modification, the molecular structure of polycarboxylic superplasticizer was optimized. The siloxane group with reactivity with cement-based materials was introduced, so as to improve the water reducing performance of water reducing agent. The molecular structure of the new superplasticizer was characterized by FIIR, 1HNMR and GPC. The adsorption of the water-reducing agent on the surface of cement particles was determined by TOC. The results show that superplasticizer with silane can obviously improved the working performance of the mortar, but also had obvious fluidity retention ability. Because the introduction of silane significantly increased the adsorption amount of water reducing agent molecules in cement particles. At the same time, the introduction of silane decreased the mechanical properties of hardened cement mortars in 1d, because it delayed hydration. However, there was no negative effect on the mechanical properties after 3d, and even the flexural strength of 28d was increased by 13%-37%.

References

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Published

2023-05-25

How to Cite

Xiongfei , S., Haoliang , H., Xuemin , S., Jie , H., Jiangxiong, W., Qijun , Y., Kasimova , G. A., & Nurmirzayev , A. D. U. (2023). EFFECT OF SILANE MODIFIED POLYCARBOXYLIC SUPERPLASTICIZER ON FLUIDITY AND MECHANICAL PROPERTIES OF CEMENT MORTAR. GOLDEN BRAIN, 1(1), 31–36. Retrieved from https://researchedu.org/index.php/goldenbrain/article/view/4292

Issue

Vol. 1 No. 1 (2023): QURILISHDA INNOVATSION TEXNOLOGIYALAR

Section

Articles

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