A kind of Artemisia annua fiber reinforced concrete and preparation method thereof
A fiber-reinforced, concrete technology that can be used in sustainable waste treatment, solid waste management, climate sustainability, etc., and can solve problems such as insufficient environmental protection and increased material costs
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[0024] The preparation method of the Artemisia annua fiber reinforced concrete of the embodiment of the present invention is as follows:
[0025] (1) Preparation of Artemisia annua fiber: Peel off the Artemisia annua bark of the fresh Artemisia annua plant, cut it into small sections with a length of 20 mm to 30 mm, place it in a 1% sodium hydroxide solution, soak it for 30 minutes, and remove it Take it out and rinse it with water for 4-5 times, and finally dry it naturally for later use;
[0026] (2) Preparation of concrete: Add coarse and fine aggregates, cement and water according to the design ratio, and stir evenly with a forced mixer;
[0027] Among them, the coarse and fine aggregates are crushed stone with a particle size distribution of 5-20 mm and medium sand with a fineness modulus of 2.7; the cement is slag Portland cement with P.S 32.5; the ratio of coarse and fine aggregates, cement and water For: Portland slag cement: medium sand: gravel: water is 1:0.922:2.76...
Embodiment 1
[0039] The results of the splitting tensile strength of concrete with the same matrix ratio obtained from the comparison test of splitting tensile strength at different inclusion rates of Artemisia annua fibers are shown in Table 2.
[0040] Table 2 Splitting tensile strength of concrete with different inclusion rates of Artemisia annua fibers
[0041]
[0042] Note: In the formula, F is the splitting failure load, and A is the cross-sectional area of the test block.
[0043] Aiming at the quantitative relationship between the incorporation rate of Artemisia annua fiber and the splitting tensile strength of Artemisia annua fiber reinforced concrete, the formula fitting is carried out based on the data in Table 2, as shown in figure 2 As shown, the average splitting tensile strength of Artemisia annua fiber reinforced concrete can be obtained The average splitting tensile strength of ordinary concrete The relational formula about the incorporation rate δ of Artemisi...
Embodiment 2
[0049] The cubic compressive strength results of concrete with the same matrix ratio obtained from the comparison test of cubic compressive strength at different inclusion rates of Artemisia annua fiber are shown in Table 4.
[0050] Table 4 Compressive strength of concrete cubes with different fiber incorporation ratios
[0051]
[0052] Note: In the formula, F is the compressive failure load, and A is the cross-sectional area of the test block.
[0053] Aiming at the quantitative relationship between the incorporation rate of Artemisia annua fiber and the compressive strength of the cube of Artemisia annua fiber reinforced concrete, the formula fitting is carried out based on the data in Table 4, as shown in image 3 As shown, the average cubic compressive strength of Artemisia annua fiber reinforced concrete can be obtained Average cubic compressive strength of ordinary concrete The relational formula about the incorporation rate δ of Artemisia annua fiber is as ...
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