High-viscosity asphalt and preparation method thereof
A technology of high-viscosity asphalt and matrix asphalt, which is applied in building components, building insulation materials, construction, etc., can solve the problems of poor durability and weather resistance, high low-temperature brittleness, weathering cracks, etc., and achieve high durability and weather resistance, Low temperature brittleness and low production cost
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Embodiment 1
[0032] Firstly, activate the commercially available waste concrete powder and grind it into activated waste concrete powder for future use. The method is as follows:
[0033] (1) Mix waste concrete powder and powdered sodium silicate and heat it to 250-350°C and keep it warm for 1-2 hours. The weight of powdered sodium silicate added is 1%-3% of the weight of waste concrete powder, and then cool down to room temperature;
[0034] (2) Mix and grind the mixture of waste concrete powder and powdery sodium silicate obtained in step (1) with desulfurized gypsum and admixture for 15-60 minutes. The weight of the mixture is 1%-5%, the weight of the admixture is 1%-3% of the weight of the mixture of waste concrete powder and powdered sodium silicate, and it is ground to a specific surface area greater than 450 m 2 / kg of powder to obtain activated waste concrete powder; the admixture is one or more of slaked lime, sulfoaluminate, Portland cement clinker, and triethanolamine; the abov...
Embodiment 2
[0049] Firstly, the commercially available waste concrete powder is activated and ground into activated waste concrete powder for future use. The specific activation treatment method is the same as in Example 1.
[0050] Weigh the following raw materials to prepare additives:
[0051] Raw material 1: Aluminum slag powder 1kg,
[0052] Steel slag powder 25kg,
[0053] Alkali slag powder 32kg,
[0054] Activated waste concrete powder 42kg,
[0055] Raw material 2: water 20kg;
[0056] The preparation method of additive is the same as embodiment 1.
[0057] Take by weighing 4kg of the additive prepared by the above method, 3kg of epoxy resin (commercially available, the same below); 93kg of No. 70 asphalt; first mix the additive and the commercially available No. 70 asphalt in a commercially available high-shear mixer (or commercially available colloid Grinding) for 3 minutes, the temperature is controlled at 180 ° C, and finally epoxy resin is added and stirred for 5 minute...
Embodiment 3
[0061] Firstly, the commercially available waste concrete powder is activated and ground into activated waste concrete powder for future use. The activation treatment method is the same as in Example 1.
[0062] Weigh the following raw materials to prepare additives:
[0063] Raw material 1: Aluminum slag powder 2kg,
[0064] Steel slag powder 28kg,
[0065] Alkali slag powder 40kg,
[0066] Activated waste concrete powder 30kg,
[0067] Raw material 2: water 25kg;
[0068] The preparation method of additive is the same as embodiment 1.
[0069] Take by weighing 3kg of the additive prepared by the above method, 2kg of epoxy resin (commercially available, the same below); 95kg of No. 70 asphalt; first put the additive and the commercially available No. 70 asphalt in a high-shear mixer (such as Chengdu Xindu Yongtong Machinery Co., Ltd. The high-shear mixer produced by the factory) was mixed for 3 minutes, and the temperature was controlled at 170 ° C. Finally, epoxy resin ...
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