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2007•Journal of Hebei Polytechnic UniversityRequires access

The Effect of Low Water Cement Ratio on Hydration Degree of Portland Cement

Sun Xiao-ha

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Abstract

The hydration degree of Portland cement under the condition of low water cement ratio was tested,and the microstructure of hardened cement paste was studied by means of XRD and SEM.The results show that the hydration degree of cement is lower under the low water cement ratio than under the high water cement ratio,and there exists more unhydrated cement in the hardened cement paste with low water cement paste,the crystallization and growth of cement hydrates is affected.The complete crystals of portlandite and etringite can not be seen almost.

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The hydration degree of Portland cement under the condition of low water cement ratio was tested,and the microstructure of hardened cement paste was studied by means of XRD and SEM.The results show that the hydration degree of cement is lower under the low water cement ratio than under the high water cement ratio,and there exists more unhydrated cement in the hardened cement paste with low water cement paste,the crystallization and growth of cement hydrates is affected.The complete crystals of portlandite and etringite can not be seen almost.

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Available abstract

The hydration degree of Portland cement under the condition of low water cement ratio was tested,and the microstructure of hardened cement paste was studied by means of XRD and SEM.The results show that the hydration degree of cement is lower under the low water cement ratio than under the high water cement ratio,and there exists more unhydrated cement in the hardened cement paste with low water cement paste,the crystallization and growth of cement hydrates is affected.The complete crystals of portlandite and etringite can not be seen almost.

Key concepts: Cement, Portlandite, Portland cement, Materials science, Water–cement ratio, Microstructure, Composite material, Degree (music)

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