Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1456963 | Cement and Concrete Research | 2010 | 5 Pages |
Abstract
This paper describes the mechanical properties and microstructure of calcium aluminate based ultra high strength cement at early age. By using silica fume, polycarboxylate based superplasticizers and a hybrid defoaming mixer, which is anon-contact mixer, cement paste with water to powder ratio of 0.1 can be cast in a mold. When the water to powder ratio is 0.1, the bending strength of hardened samples can be obtained over 30 MPa. Samples were cured at 40 or 60 °C for 7 days. At 60 °C, C3AH6 is mainly produced, whereas C3AH6 and C2AH8 are produced at 40 °C. The mechanical properties of hardened samples with low water to powder ratio are related to the pore volume and pore size distribution.
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Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Etsuo Sakai, Tomoaki Sugiyama, Tuyoshi Saito, Masaki Daimon,