Journal of Guangdong University of Technology ›› 2018, Vol. 35 ›› Issue (04): 119-126.doi: 10.12052/gdutxb.170161

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Effect of Ground Granulated Blast Furnace Slag on Properties Based on Analysis of Water Film Thickness Hypothesis

Wen Meng-dan, Chen Jia-jian, Gao Yu-shen, Ma An-min   

  1. Department of Civil Engineering, Foshan University, Foshan 528000, China
  • Received:2017-12-05 Online:2018-07-09 Published:2018-06-06
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Abstract: To study the effect of ground granulated blast furnace slag (GGBS) on the flowability, cohesiveness and strength of cement paste, 30 mixes of cement paste samples with different water/cementitious material ratios and different GGBS contents were measured. To reveal the flowability mechanism of GGBS cement paste, the packing density of 5 different cementitious mixes with various GGBS content was measured. The water film thickness of each cement paste mix was calculated based on the packing density test, and the effect of water film thickness on the flowability of GGBS cement paste was discussed. Results demonstrated that addition of moderate GGBS could increase the flowability and compressive strength, but impair the cohesiveness. The best overall performance of cement paste occurs when 5% GGBS is added. The addition of GGBS had positive effect on packing density of cementitious materials. The water film thickness is the major governing factor of flowability of GGBS cement paste, and the flowability of cement paste increases with the increase of water film thickness.

Key words: flowing property, ground granulated blast furnace slag (GGBS), strength, water film thickness

CLC Number: 

  • TU528.52
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