Skip to main content

Effect of borax on hydration and hardening properties of magnesium and pottassium phosphate cement pastes

Journal of Wuhan University of Technology-Mater. Sci. Ed. volume 25, pages 613–618 (2010)Cite this article

Abstract

Magnesium and potassium phosphate cement (MKPC) sample were prepared by mixing dead burnt MgO powder, potassium phosphate and different dosages of retarder borax to investigate the effect of borax on its hydration and hardening characteristics. The pH value, fluidity, hydration temperature and strength development of MKPC paste were investigated, and the mineralogical composition and microstructural morphology of its hydration products were analyzed. The experimental results indicated that, within a certain dosage, borax caused an endothermal effect for MKPC paste, which decreased the early hydration rate of MKPC paste, increased the fluidity of MKPC paste. Thus, strength and micro-morphology of hardened MKPC are affected. It can be concluded that borax in MKPC paste retards the early hydration rate of MKPC paste by forming a film onto surface of MgO, decreasing the temperature and increasing the pH value of the system. As borax dosage varying, different factors may dorminate the effects.

This is a preview of subscription content, access via your institution.

Access options

Buy single article

Instant access to the full article PDF.

USD 39.95

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

References

  1. B E I Abdelrazig, J H Sharp, B El-Jazairi. The Chemical Composition of Mortars Made from Magnesia-Phosphate Cement[J]. Cem. Concr. Res., 1988, 18(3): 415–425

    Article  CAS  Google Scholar 

  2. Q Yang, X Wu. Factors Influencing Properties of Phosphate Cement-based Binder for Rapid Repair of Concrete[J]. Cem. Concr. Res., 1999, 29(3): 389–396

    Article  CAS  Google Scholar 

  3. Q. Yang, B. Zhu and X. Wu, Characteristics and Durability test of Magnesium Phosphate Cement-based Material for Rapid Repair of Concrete[J]. Materials and Structures, 2000, 33(4): 229–234

    Article  CAS  Google Scholar 

  4. Q Yang, S Zhang, X Wu. Deicer-scaling Resistance of Phosphate Cement-based Binder for Rapid Repair of Concrete[ J]. Cem. Concr. Res., 2002, 32(1): 165–168

    Article  CAS  Google Scholar 

  5. S S Seehra, Saroj Gupta, Satander Kumar. Rapid Setting Magnesium Phosphate Cement for Quick Repair of Concrete Pavements-Characterisation and Durability Aspects[J]. Cem. Concr. Res., 1993, 23(2): 254–266

    Article  CAS  Google Scholar 

  6. H Jiang, B Liang, L M Zhang. Investigation of MPB with Super Early Strength for Repair of Concrete[J]. Journal of Building Materials, 2001, 4(2): 196–198 (in Chinese)

    CAS  Google Scholar 

  7. H Jiang, L M Zhang. Study on Magnesium Phosphate Cement[J]. Wuhan Gongye Daxue Xuebao, 2001, 23(4): 32–34 (in Chinese)

    CAS  Google Scholar 

  8. A Wagh, SY Jeong, D Singh. High Strength Phosphate Cement Using Industrial by Product Ashes[C]. Proceedings of First International Conference. In: A Azizinannini et al., eds..Amer. Soc. Civil Eng., 1997: 542–533

  9. A Wagh, S Y Jeong, D Singh. Method of Waste Stabilization via Chemically Bonded Phosphate Ceramics[P]. U S Patent, 5830815, 1998-11-3

  10. D Singh, A Wagh, Phosphate Bonded Structural Product from High Volume Wastes[P]. US Patent, 5846894. 1998-12-8

  11. Zhu Ding, Zongjin Li. High Early Strength Phosphate Cement with Fly Ash[J]. ACI Material Journal, 2005, 102(6): 375–381

    Google Scholar 

  12. Zhu Ding, Zongjin Li.The Preparation and Properties of High Early Strength Magnesium Phosphosilicate Cement[J]. Chinese Journal of Materials Research, 2006, 20(2): 141–147 (in Chinese)

    Google Scholar 

  13. E Soudée, J Péra. Mechanism of Setting Reaction in Magnesia-Phosphate Cements[J]. Cem. Concr. Res., 2000, 30: 315–321

    Article  Google Scholar 

  14. E Soudée, J Péra. Influence of Magnesia Surface on the Setting Time of Magnesia-Phosphate Cement[J]. Cem. Concr. Res., 2002, 32: 153–157

    Article  Google Scholar 

  15. T Sugama, L E Kukacka. Magnesium Monophosphate Cement Derived from Diammonium Phosphate Solutions[J]. Cem. Concr. Res., 1983, 13(3): 407–416

    Article  CAS  Google Scholar 

  16. T Sugama, L E Kukacka. Characteristics of Magnesium Polyphosphate Cements Derived from Ammonium Polyphosphate Solutions[J]. Cem. Concr. Res., 1983, 13: 499–506

    Article  CAS  Google Scholar 

  17. BEI Abdelrazig, JH Sharp, B El-Jazairi. The Microstructure and Mechanical Properties of Mortars Made from Magnesia-Phosphate Cement[J]. Cem. Concr. Res., 1989, 19: 247–258

    Article  Google Scholar 

  18. Sarkar AK. Phosphate Cement Based Fast Setting Binders[J]. Ceram. Bulletin, 1990, 69(2): 234–238

    CAS  Google Scholar 

  19. Sarkar AK. Hydration and Dehydration Characteristics of Struvite and Dittmarite Pertaining to Magnesium Ammonuim Phosphate Cement Systems[J]. Ceram. Bulletin, 1990, 69(2): 234–238

    CAS  Google Scholar 

  20. C S Liu, F Y Cheng, Y H, et al. Effect of the Particle Sizes of Raw Materials on Hydration and Harden Process of Calcium Phosphate Bone Cement[J]. Journal of Chinese Ceramic Society, 1999, 27(2): 139–146(in Chinese)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Materials Science and Engineering, South East University, Nanjing, 210096, China

    Jianming Yang  (杨建明) & Chunxiang Qian  (钱春香)

  2. Institute of Civil Engineering, Yancheng Institute of Technology, Yancheng, 224051, China

    Jianming Yang  (杨建明)

  3. Jiangsu Important Laboratry in Civil Engineering material, Nanjing, 210096, China

    Chunxiang Qian  (钱春香)

Authors
  1. Jianming Yang  (杨建明)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Chunxiang Qian  (钱春香)
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Chunxiang Qian  (钱春香).

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Yang, J., Qian, C. Effect of borax on hydration and hardening properties of magnesium and pottassium phosphate cement pastes. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 25, 613–618 (2010). https://doi.org/10.1007/s11595-010-0055-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11595-010-0055-6

Key words

  • magnesium and potassium phosphate cement (MKPC)
  • hydration
  • fluidity
  • strength