WO2021227685A1 - 一种添加聚丙烯纤维和废旧轮胎橡胶颗粒的防渗混凝土及其制备方法 - Google Patents
一种添加聚丙烯纤维和废旧轮胎橡胶颗粒的防渗混凝土及其制备方法 Download PDFInfo
- Publication number
- WO2021227685A1 WO2021227685A1 PCT/CN2021/083975 CN2021083975W WO2021227685A1 WO 2021227685 A1 WO2021227685 A1 WO 2021227685A1 CN 2021083975 W CN2021083975 W CN 2021083975W WO 2021227685 A1 WO2021227685 A1 WO 2021227685A1
- Authority
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- WIPO (PCT)
- Prior art keywords
- parts
- cement
- rubber particles
- water
- impermeable concrete
- Prior art date
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 74
- 239000002245 particle Substances 0.000 title claims abstract description 66
- 239000000835 fiber Substances 0.000 title claims abstract description 47
- -1 polypropylene Polymers 0.000 title claims abstract description 44
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 43
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 43
- 239000010920 waste tyre Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000004568 cement Substances 0.000 claims abstract description 41
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 25
- 239000004576 sand Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000012670 alkaline solution Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000004575 stone Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 28
- 238000011161 development Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Definitions
- the invention relates to an impermeable concrete added with polypropylene fiber and waste tire rubber particles and a preparation method thereof. It is suitable for the anti-seepage and reinforcement treatment of underground spaces such as tunnels, subway stations, coal mines, etc., which can minimize pathological disasters caused by groundwater leakage.
- the present invention provides an impermeable concrete added with polypropylene fiber and waste tire rubber particles and a preparation method thereof.
- the present invention adds waste tire rubber particles on the basis of adding polypropylene fiber to plain concrete, and the test proves , After adding rubber particles, the toughness of the concrete is better, and the lack of tensile strength of the rubber particles can be compensated by the polypropylene fiber.
- the advantages and disadvantages of the two complement each other, so that the mixed fiber concrete can achieve both tensile toughness and anti-seepage. To a higher level.
- the technical scheme of the present invention is as follows:
- An impermeable concrete with polypropylene fiber and waste tire rubber particles including the following components:
- Rubber particles, polypropylene fibers, cement, water, sand, crushed stones and water reducing agents preferably, the rubber particles are scrap tires cut into pieces and crushed into rubber particles with a particle size of 60 mesh; the polypropylene fiber The particle size is 70 mesh; the cement adopts P ⁇ O42.5 grade cement; the particle size of the crushed stone is 6mm-10mm; the water reducing agent adopts a polycarboxylic acid water reducing agent.
- impermeable concrete includes the following components in parts by weight:
- the impermeable concrete includes the following components in parts by weight:
- the alkaline solution is a KOH alkaline solution with a mass concentration of 15%.
- the present invention has the following advantages:
- Polypropylene fiber is a polymer material with a melting point above 100°C. It has strong stability, water-repellent surface, and does not chemically react with other building materials. Polypropylene fiber has relatively good tensile strength and can improve the tensile performance of concrete.
- the rubber particles have high ductility and can significantly improve the toughness of concrete. Because the rubber particles can extend in any direction under extrusion, they can fill the gaps in the concrete to the greatest extent. At the same time, filling a certain proportion of rubber particles can reduce the polypropylene fiber Dosage to achieve the purpose of reducing project cost and protecting the environment.
- the present invention combines the advantages and disadvantages of polypropylene fiber and waste tire rubber particles, and by mixing polypropylene fibers and waste tire rubber particles with different particle radii and dosages, the appropriate particle size and combination can be selected according to different on-site construction conditions. Compare, select the most suitable mix ratio to ensure that good engineering waterproof requirements are met. By adding two different fibers at one time, the concrete mechanics and anti-seepage test are carried out, and the optimal two fiber mix ratios are selected, so that the concrete product can meet the requirements of the best dosage, the most cost-effective, and green and safe.
- Example 1 An impermeable concrete added with polypropylene fiber and waste tire rubber particles and its preparation method
- Impermeable concrete consists of the following components in parts by weight:
- the preparation method is as follows:
- Example 2 An impermeable concrete added with polypropylene fiber and waste tire rubber particles and its preparation method
- Impermeable concrete consists of the following components in parts by weight:
- the preparation method is the same as in Example 1.
- Example 3 An impermeable concrete added with polypropylene fiber and waste tire rubber particles and its preparation method
- Impermeable concrete consists of the following components in parts by weight:
- the preparation method is the same as in Example 1.
- test piece Take out the test piece from the curing room one day before the test, and dry the surface. Coat a layer of sealing material on the side, and then press the test piece into the test piece cover preheated by the oven. After a little cooling, the pressure can be relieved and the extruded sealing material can be eliminated. Remove the air bubbles in the pipe of the impermeability instrument, and install the test piece cover together with the test piece on the impermeability instrument for testing.
- Example 1 Specimen group number Maximum water pressure of impermeability (MPa) Plain concrete 0.7
- the impermeable concrete obtained in Example 1 1.2
- the impermeable concrete obtained in Example 2 1.1
- the impermeable concrete obtained in Example 3 1.1
- the axial compressive strength test adopts a 150mm ⁇ 150mm ⁇ 300mm prismatic specimen, which is cured to the specified age, and the specimen is placed upright, the specimen axis is aligned with the center of the lower platen of the testing machine, and the load is applied at the specified speed until it fails. , Determine its axial compressive strength, the results are shown in Table 3:
Abstract
Description
试件组号 | 抗渗最大水压(MPa) |
素混凝土 | 0.7 |
实施例1获得的防渗混凝土 | 1.2 |
实施例2获得的防渗混凝土 | 1.1 |
实施例3获得的防渗混凝土 | 1.1 |
试件组号 | 劈裂抗拉强度(MPa) |
素混凝土 | 2.32 |
实施例1获得的防渗混凝土 | 3.12 |
实施例2获得的防渗混凝土 | 3.20 |
实施例3获得的防渗混凝土 | 3.19 |
试件组号 | 抗压强度(MPa) |
素混凝土 | 33.10 |
实施例1获得的防渗混凝土 | 38.92 |
实施例2获得的防渗混凝土 | 38.89 |
实施例3获得的防渗混凝土 | 38.82 |
Claims (10)
- 一种添加聚丙烯纤维和废旧轮胎橡胶颗粒的防渗混凝土,其特征在于,所述防渗混凝土包括以下组分:橡胶颗粒、聚丙烯纤维、水泥、水、沙子、碎石和减水剂。
- 根据权利要求1所述的防渗混凝土,其特征在于,所述橡胶颗粒为废旧轮胎切块并碾碎成粒径为60目的橡胶颗粒。
- 根据权利要求1所述的防渗混凝土,其特征在于,所述聚丙烯纤维的粒径为70目。
- 根据权利要求1所述的防渗混凝土,其特征在于,所述水泥采用P·O42.5级水泥。
- 根据权利要求1所述的防渗混凝土,其特征在于,所述碎石的粒径为6mm-10mm。
- 根据权利要求1所述的防渗混凝土,其特征在于,所述减水剂采用聚羧酸系减水剂。
- 根据权利要求1所述的防渗混凝土,其特征在于,所述防渗混凝土包括以下按重量份数的组分组成:橡胶颗粒8-12份、聚丙烯纤维1-3份、水泥15-25份、水5-10份、沙子20-25份、碎石55-60份和减水剂0.1-0.3份。
- 根据权利要求7所述的防渗混凝土,其特征在于,所述防渗混凝土包括以下按重量份数的组分组成:橡胶颗粒10份、聚丙烯纤维2份、水泥20份、水6份、沙子24份、碎石56份和减水剂0.2份。
- 制备如权利要求1-8任一项所述防渗混凝土的方法,具体步骤如下:(1)将废旧轮胎切块并碾碎成粒径为60目的橡胶颗粒,准备好粒径为70目的聚丙烯纤维,水泥采用P·O42.5级水泥,碎石采用粒径6mm-10mm碎石,减水剂采用聚羧酸系减水剂;(2)将橡胶颗粒放入碱性溶液中浸泡30分钟,并取出用清水洗净晾晒干燥;(3)将水泥倒入水中,使用水泥搅拌机充分搅拌;(4)将聚丙烯纤维与橡胶颗粒混合均匀后导入事先搅拌好的水泥中,添加减水剂,使用水泥搅拌机充分搅拌;(5)将碎石和沙子倒入水泥中,充分搅拌,得到最终产物。
- 根据权利要求9所述的方法,其特征在于,所述步骤(2)中碱性溶液为质量浓度是15%的KOH碱性溶液。
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CN202010376586 | 2020-05-07 | ||
CN202010406228.6A CN111423186A (zh) | 2020-05-07 | 2020-05-14 | 一种添加聚丙烯纤维和废旧轮胎橡胶颗粒的防渗混凝土及其制备方法 |
CN202010406228.6 | 2020-05-14 |
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CN116444224A (zh) * | 2023-03-15 | 2023-07-18 | 广东清爽节能材料有限公司 | 一种丙烯酸橡胶隔声保温浆料及其制备方法、应用 |
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CN111423186A (zh) * | 2020-05-07 | 2020-07-17 | 山东大学 | 一种添加聚丙烯纤维和废旧轮胎橡胶颗粒的防渗混凝土及其制备方法 |
CN112390579A (zh) * | 2020-11-19 | 2021-02-23 | 中国电建市政建设集团有限公司 | 一种抗渗混凝土及其制备方法 |
CN112554910A (zh) * | 2020-12-04 | 2021-03-26 | 中煤科工开采研究院有限公司 | 受动载荷冲击巷道注浆加固方法 |
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CN113461355A (zh) * | 2021-08-25 | 2021-10-01 | 南京林业大学 | 废弃固体物再生利用的高性能混凝土及其制备方法 |
CN115028410B (zh) * | 2022-06-12 | 2023-06-02 | 广东工业大学 | 一种绿色环保型隔音橡胶砂浆及其制备方法 |
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CN116444224B (zh) * | 2023-03-15 | 2023-09-26 | 广东清爽节能材料有限公司 | 一种丙烯酸橡胶隔声保温浆料及其制备方法、应用 |
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