Effect of Metakaolin on the Physical Properties and Setting Time of High Performance Concrete

Bao Min Wang; Hai Nan Ma; Ming Li; Yu Han

doi:10.4028/www.scientific.net/KEM.539.195

Paper Titles

Study on Hydration Degree of Portland Cement-Slag Complex Binders
p.172

Study on Pore Structure Characterization of Concrete at Different Ages by Thermoporometry
p.178

Determining the Contact Angle of Hardened Cement Paste Using Thin Layer Wicking Method
p.184

Solubility Behavior of the Hydration Products in the Pore Solution of Hydrated Cement Pastes
p.189

Effect of Metakaolin on the Physical Properties and Setting Time of High Performance Concrete
p.195

The Effect of Curing System on Mechanical Properties of Desulphurization Gypsum-Slag Composite Binder
p.200

The Influence of Curing Temperature on the Coordination of the Expansion and Strength of High Strength Expansive Concrete
p.205

Preparation of MgO- and CaO-Bearing Expansive Agent Used for Cement-Based Materials
p.211

Study on Compatibility of Modified the Cement-Based Composite Biomass Materials by Agent
p.215

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Effect of Metakaolin on the Physical Properties and Setting Time of High Performance Concrete

Abstract:

Abstract. Kaolin native to Jilin Province was calcined at the constant temperature of 750°C for 4 hours to obtain the high pozzolanic metakaolin(Al₂Si₂O₇). The effects of metakaolin (MK) on the static flow expansion of cement paste and the workability and setting time of concrete were studied with the content of 0, 5%, 10% and 15% by weight of cementitious material. The test results show that: when the dosage of superplasticizer is 2% by weight of cementitious material, the setting time of concrete shortens obviously and the slump and expansion decrease with the raising of MK content. When 5% of cement is replaced by MK, the setting time of concrete shortens by 5%; the slump and the slump flow decrease by 5.5% and 4.4% respectively.