Colored pervious concrete and preparation process thereof
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A permeable concrete and colored technology, applied in the field of permeable concrete, can solve the problems affecting engineering and opening traffic time, high compressive strength and flexural strength, and high porosity
Active Publication Date: 2020-04-03
成都新豪鼎盛建材有限公司
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[0006] The existing colored permeable concrete has high compressive strength and flexural strength, high porosity, and good water permeability, but after construction, it needs 7-14 days of curing time, which greatly affects the follow-up project and opening time for traffic
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preparation example 1-3
[0046] In Preparation Example 1-3, the polycarbonate diols were selected from the polycarbonate diols sold by Jining Huakai Resin Co., Ltd. with the model number T-5652N, and the polycaprolactone polyols were selected from Dongguan Kaisili Plastics Co., Ltd. The brand of polycaprolactone polyol sold by Raw Material Co., Ltd. is PCL208, the nano-silica is selected from the nano-silica of the model TSP-H10 sold by Jiangsu Tianxing New Material Co., Ltd., and the chitosan is selected from Shanghai Kuoquan Chitosan is sold by Biotechnology Co., Ltd. under Cat. No. 001.
preparation example 1
[0047] Preparation Example 1: (1) According to the ratio of raw materials in Table 1, 4.5kg of polycarbonate diol and 5kg of polycaprolactone polyol were placed in a vacuum drying oven and dried at 100°C for 4 hours; (2) adding 1kg isophorone diisocyanate, 5kg nano silicon dioxide and 3kg cyclohexanone, stir and heat up to 60°C, add 0.5kg dibutyltin dilaurate, heat up to 70°C, stir for 3h, add 3.4kg epoxy acrylic resin and 1.5kg 1,4-butanediol, continue to stir and react for 1h, and keep warm for 2h; (3) add 5kg dimethyl sulfoxide, 3.4kg gelatin solution and 1.2kg chitosan, and stir for 3.5h at 60°C, Prepare polyurethane modified gelatin.
[0048] The raw material ratio of polyurethane modified gelatin in table 1 preparation example 1-3
[0049]
[0050]
preparation example 2
[0051] Preparation Example 2: (1) According to the raw material ratio in Table 1, put 6 kg of polycarbonate diol and 8 kg of polycaprolactone polyol in a vacuum drying oven, and dry at 110 ° C for 2.5 hours; (2) add 2kg isophorone diisocyanate, 8kg nano silicon dioxide and 4.5kg cyclohexanone, stir and heat up to 65°C, add 0.8kg dibutyltin dilaurate, heat up to 75°C, stir for 2h, add 4.7kg epoxy acrylic acid Resin and 2kg 1,4-butanediol, continue to stir and react for 1.5h, keep warm for 2h; (3) add 8kg dimethyl sulfoxide, 5.3kg gelatin solution and 1.8kg chitosan, at 70 ℃, stir for 2h, Prepare polyurethane modified gelatin.
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Abstract
The invention discloses a colored pervious concrete and a preparation process thereof. The colored pervious concrete is prepared from the following raw materials in parts by weight: 260 to 340 parts of cement; 30 to 60 parts of mineral powder; 60 to 90 parts of fly ash, 20 to 45 parts of silica fume, 150 to 200 parts of water, 700 to 900 parts of a fine aggregate, 800 to 1200 parts of a coarse aggregate, 10 to 20 parts of a pigment, 8 to 16 parts of an early strength accelerator, 45 to 80 parts of bisphenol A epoxy resin, 35 to 55 parts of polyurethane modified gelatin and 60 to 90 parts of acuring accelerator; wherein the curing accelerator is prepared from 2-ethyl-4-methylimidazole, a modified anhydride curing agent and a cardanol modified polyamide in a mass ratio of 1 to (1.3 to 1.5)to (0.7 to 1). The colored pervious concrete has the advantages of being high in pervious coefficient, high in early compressive strength and breaking strength, short in curing time, capable of shortening open traffic time and good in thermal aging resistance and freezing and thawing resistance.
Description
technical field [0001] The invention relates to the technical field of permeable concrete, more specifically, it relates to a colored permeable concrete and a preparation process thereof. Background technique [0002] With the continuous acceleration of our country's infrastructure construction, the construction area continues to increase, the urbanization process is getting faster and faster, more and more roads, and the permeable area is constantly decreasing, which often results in urban areas with light rain waterlogging, heavy rain waterlogging, black and smelly water bodies, Environmental problems such as heat islands are serious, and because ordinary concrete is impermeable and difficult to conduct heat convection with the air, it loses the ability to control the humidity and temperature of the surface, its specific heat capacity is small, and the heat absorption is strong, which makes the average temperature of the surface rise, forming the "heat island effect" "In h...
Claims
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Application Information
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