Cement-based cementitious material and its formation method
AssigneeNational Taiwan University of Science and Technology
InventorsChun-Tao Chen, Yue-Sheng Wang
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Abstract
A method for forming cement-based cementitious material includes: pouring a cement paste into a mold; applying an electrical current to the cement paste to perform an electro-osmotic reaction; and transferring the reacted cement paste into a water tank for curing, thereby obtaining a functionally graded cement-based cementitious material. A pair of electrodes is placed in the mold and connected to an external power source. The compressive strength of the functionally graded cement-based cementitious material in the middle is lower than that at either of both ends.
Claims18
A method for forming cement-based cementitious material, comprising:
- pouring a cement paste into a mold, wherein a pair of electrodes is disposed in the mold, and the pair of electrodes is connected to an external power source;
- applying an electrical current to the cement paste between the pair of electrodes to perform an electro-osmotic reaction, wherein the electrical current is applied for 2 to 14 hours and wherein the electrical current is between 0.01 A and 0.2 A;
- and
- transferring the reacted cement paste into a water tank for curing, thereby obtaining a functionally graded cement-based cementitious material,
- wherein a compressive strength in a middle of the functionally graded cement-based cementitious material is lower than that at both ends, and
- wherein the functionally graded cement-based cementitious material has a ratio of calcium hydroxide (Ca(OH)2) to silica (SiO2) at both ends being higher than that in the middle.
Dependencies are inferred from the claim text.