CN106007455A - Water reducer capable of improving performance of concrete - Google Patents
Water reducer capable of improving performance of concrete Download PDFInfo
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- CN106007455A CN106007455A CN201610325862.0A CN201610325862A CN106007455A CN 106007455 A CN106007455 A CN 106007455A CN 201610325862 A CN201610325862 A CN 201610325862A CN 106007455 A CN106007455 A CN 106007455A
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- 239000004567 concrete Substances 0.000 title claims abstract description 44
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 38
- 150000007524 organic acids Chemical class 0.000 claims abstract description 38
- 150000007529 inorganic bases Chemical class 0.000 claims abstract description 23
- 239000007800 oxidant agent Substances 0.000 claims abstract description 20
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract 2
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 claims abstract 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 48
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 24
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 4
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- -1 TGA Chemical class 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 abstract description 36
- 125000005394 methallyl group Chemical group 0.000 abstract description 11
- 229940051841 polyoxyethylene ether Drugs 0.000 abstract description 11
- 239000004568 cement Substances 0.000 abstract description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 4
- 239000000460 chlorine Substances 0.000 abstract description 4
- 229910052801 chlorine Inorganic materials 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 4
- 239000010881 fly ash Substances 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 4
- 239000011707 mineral Substances 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 235000005985 organic acids Nutrition 0.000 description 9
- 239000004576 sand Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000004575 stone 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明涉及混凝土外加剂技术领域，公开了一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，310份～400份甲基烯丙基聚氧乙烯醚、25份～30份丙烯酸、5份～8份氧化剂、12份～16份无机碱、0.1份～0.6份有机酸、2.0份～2.8份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。本发明配比的减水剂与水泥的适应性好，具有缓凝、保塑等技术效果。本发明配比的减水剂减水率高、收缩率比低，提高混凝土防水抗渗能力，大大减少了混凝土后期自收缩。低氯、低碱降低了传统外加剂等带来的碱集料反应、钢筋锈蚀等不利因素。对水泥、粉煤灰和矿粉等有极强的亲和和分散能力，同时减少了孔隙溶液的表面张力，使生成的混凝土结构致密。The invention relates to the technical field of concrete admixtures, and discloses a water reducer for improving the performance of concrete. In parts by weight, each component and its content are 310 to 400 parts of methallyl polyoxyethylene ether, 25 1-30 parts of acrylic acid, 5-8 parts of oxidizing agent, 12-16 parts of inorganic base, 0.1-0.6 parts of organic acid, 2.0-2.8 parts of inorganic ammonium salt; organic acid includes thioglycolic acid, inorganic ammonium salt includes persulfuric acid Ammonium. The proportioned water reducing agent of the invention has good adaptability to cement and has technical effects such as setting retardation and plastic preservation. The proportioned water-reducing agent of the invention has high water-reducing rate and low shrinkage ratio, improves the waterproof and anti-seepage ability of concrete, and greatly reduces the self-shrinkage of concrete in the later stage. Low chlorine and low alkali reduce the unfavorable factors such as alkali-aggregate reaction and steel corrosion caused by traditional admixtures. It has strong affinity and dispersion ability to cement, fly ash and mineral powder, etc., and at the same time reduces the surface tension of the pore solution, making the resulting concrete structure dense.
Description
技术领域technical field
本发明涉及混凝土外加剂技术领域，尤其涉及一种提高混凝土性能的减水剂。The invention relates to the technical field of concrete admixtures, in particular to a water reducer for improving the performance of concrete.
背景技术Background technique
2000年之后，混凝土作为建筑类目前使用最广泛的建材类材料，迎来了黄金发展时期，随着砂石等自然资源的无序开发开采使用，致使天然砂资源完全枯竭，碎石资源紧张，市场供应产品质量参差不齐，原材料单价居高不下。因此，考虑进一步使用天然砂的替代材料为重中之重。针对目前机制砂的含泥粉量波动较大、颗粒形状不均、碎石含泥量大、混凝土行业产能过剩、技术控制水平普遍较低情况，我们将混凝土的研发方向确定为高流态高性能混凝土，其中关键的高性能减水剂配方的研发定向为绿色环保、高抗泥、低标号砼流态化、高标号砼高流态化。After 2000, concrete, as the most widely used building material in construction, ushered in a golden period of development. With the disorderly development and exploitation of natural resources such as sand and gravel, the natural sand resources were completely exhausted, and gravel resources were in short supply. The quality of products supplied in the market is uneven, and the unit price of raw materials remains high. Therefore, consideration of alternative materials for the further use of natural sand is a top priority. In view of the current situation that the mud content of machine-made sand fluctuates greatly, the particle shape is uneven, the crushed stone has a large mud content, the concrete industry has overcapacity, and the technical control level is generally low, we have determined the research and development direction of concrete to be high fluidity and high Performance concrete, in which the research and development of the key high-performance water reducing agent formula is oriented towards environmental protection, high mud resistance, fluidization of low-grade concrete, and high-fluidization of high-grade concrete.
发明内容Contents of the invention
本发明针对现有技术的缺点，公开了一种提高混凝土性能的减水剂。Aiming at the shortcomings of the prior art, the invention discloses a water reducer for improving the performance of concrete.
为了解决上述技术问题，本发明通过下述技术方案得以解决。In order to solve the above technical problems, the present invention is solved through the following technical solutions.
一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，310份～400份甲基烯丙基聚氧乙烯醚、25份～30份丙烯酸、5份～8份氧化剂、12份～16份无机碱、0.1份～0.6份有机酸、2.0份～2.8份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。A water-reducing agent for improving the performance of concrete. In parts by weight, each component and its content are: 310-400 parts of methallyl polyoxyethylene ether, 25-30 parts of acrylic acid, 5-8 parts Oxidant, 12-16 parts of inorganic base, 0.1-0.6 parts of organic acid, 2.0-2.8 parts of inorganic ammonium salt; the organic acid includes thioglycolic acid, and the inorganic ammonium salt includes ammonium persulfate.
本发明配比的减水剂利用合成技术手段改变分子链的结构来控制混凝土拌合物高流动性与高抗离析性之间的匹配性，达到制备高流态、免振捣、高流态混凝土的目的。The proportioned water reducer of the present invention uses synthetic technology to change the structure of the molecular chain to control the matching between the high fluidity and high segregation resistance of the concrete mixture, so as to achieve the preparation of high fluidity, vibration-free, high fluidity purpose of concrete.
本发明配比的减水剂在抗泥性、流态性、保塑性、耐久性等方面要明显优于目前市场上同类型产品。本发明配比的减水剂减水率高、收缩率比低，提高混凝土防水抗渗能力，大大减少了混凝土后期自收缩。低氯、低碱降低了传统外加剂等带来的碱集料反应、钢筋锈蚀等不利因素。对水泥、粉煤灰和矿粉等有极强的亲和和分散能力，同时减少了孔隙溶液的表面张力，使生成的混凝土结构致密。The water reducer formulated in the present invention is obviously superior to similar products currently on the market in terms of mud resistance, fluidity, plastic retention, and durability. The proportioned water-reducing agent of the invention has high water-reducing rate and low shrinkage ratio, improves the waterproof and anti-seepage ability of concrete, and greatly reduces the self-shrinkage of concrete in the later stage. Low chlorine and low alkali reduce the unfavorable factors such as alkali-aggregate reaction and steel corrosion caused by traditional admixtures. It has strong affinity and dispersion ability to cement, fly ash and mineral powder, etc., and at the same time reduces the surface tension of the pore solution, making the resulting concrete structure dense.
作为优选，氧化剂为过氧化氢、过氧乙酸、重铬酸钠、铬酸、高锰酸钾和过硫酸铵中的一种。Preferably, the oxidizing agent is one of hydrogen peroxide, peracetic acid, sodium dichromate, chromic acid, potassium permanganate and ammonium persulfate.
作为优选，无机碱为氢氧化钾、氢氧化钠、氢氧化钙的一种。Preferably, the inorganic base is one of potassium hydroxide, sodium hydroxide and calcium hydroxide.
作为优选，以重量份数计，各组分及含量为，310份～380份甲基烯丙基聚氧乙烯醚、25份～29份丙烯酸、5份～7份氧化剂、12份～15份无机碱、0.1份～0.5份有机酸、2.0份～2.9份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。Preferably, in parts by weight, each component and its content are 310-380 parts of methallyl polyoxyethylene ether, 25-29 parts of acrylic acid, 5-7 parts of oxidizing agent, 12-15 parts Inorganic base, 0.1-0.5 parts of organic acid, 2.0-2.9 parts of inorganic ammonium salt; the organic acid includes thioglycolic acid, and the inorganic ammonium salt includes ammonium persulfate.
作为优选，以重量份数计，各组分及含量为，360份甲基烯丙基聚氧乙烯醚、28份丙烯酸、6份氧化剂、14份无机碱、0.4份有机酸、2.4份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。Preferably, in parts by weight, each component and its content are 360 parts of methallyl polyoxyethylene ether, 28 parts of acrylic acid, 6 parts of oxidant, 14 parts of inorganic base, 0.4 part of organic acid, 2.4 parts of inorganic ammonium salts; organic acids include thioglycolic acid, and inorganic ammonium salts include ammonium persulfate.
作为优选，以重量份数计，各组分及含量为，360克甲基烯丙基聚氧乙烯醚、28克丙烯酸、6克氧化剂、14克无机碱、0.4克有机酸、2.4克无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。As preferably, in parts by weight, each component and its content are: 360 grams of methallyl polyoxyethylene ether, 28 grams of acrylic acid, 6 grams of oxidant, 14 grams of inorganic base, 0.4 grams of organic acid, 2.4 grams of inorganic ammonium salts; organic acids include thioglycolic acid, and inorganic ammonium salts include ammonium persulfate.
作为优选，巯基乙酸在有机酸中的质量分数为90％～99％。Preferably, the mass fraction of thioglycolic acid in the organic acid is 90%-99%.
作为优选，过硫酸铵在无机铵盐中的质量分数为95％～99％。Preferably, the mass fraction of ammonium persulfate in the inorganic ammonium salt is 95%-99%.
与现有技术相比，本发明的有益效果为：本发明配比的减水剂在抗泥性、流态性、保塑性、耐久性等方面要明显优于目前市场上同类型产品。Compared with the prior art, the beneficial effect of the present invention is that the proportioned water reducer of the present invention is obviously superior to similar products currently on the market in terms of mud resistance, fluidity, plastic retention, and durability.
本发明配比的减水剂减水率高、收缩率比低，提高混凝土防水抗渗能力，大大减少了混凝土后期自收缩。低氯、低碱降低了传统外加剂等带来的碱集料反应、钢筋锈蚀等不利因素。对水泥、粉煤灰和矿粉等有极强的亲和和分散能力，同时减少了孔隙溶液的表面张力，使生成的混凝土结构致密。The proportioned water-reducing agent of the invention has high water-reducing rate and low shrinkage ratio, improves the waterproof and anti-seepage ability of concrete, and greatly reduces the self-shrinkage of concrete in the later stage. Low chlorine and low alkali reduce the unfavorable factors such as alkali-aggregate reaction and steel corrosion caused by traditional admixtures. It has strong affinity and dispersion ability to cement, fly ash and mineral powder, etc., and at the same time reduces the surface tension of the pore solution, making the resulting concrete structure dense.
具体实施方式detailed description
实施例1Example 1
一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，310份甲基烯丙基聚氧乙烯醚、25份丙烯酸、5份氧化剂、12份无机碱、0.1份有机酸、2.0份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。A water reducing agent for improving the performance of concrete, in parts by weight, each component and its content are: 310 parts of methallyl polyoxyethylene ether, 25 parts of acrylic acid, 5 parts of oxidizing agent, 12 parts of inorganic base, 0.1 part of Organic acid, 2.0 parts of inorganic ammonium salt; organic acid includes thioglycolic acid, and inorganic ammonium salt includes ammonium persulfate.
氧化剂为过氧化氢。无机碱为氢氧化钾。巯基乙酸在有机酸中的质量分数为90％。过硫酸铵在无机铵盐中的质量分数为95％。The oxidizing agent is hydrogen peroxide. The inorganic base is potassium hydroxide. The mass fraction of thioglycolic acid in the organic acid is 90%. The mass fraction of ammonium persulfate in the inorganic ammonium salt is 95%.
实施例2Example 2
一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，400份甲基烯丙基聚氧乙烯醚、30份丙烯酸、8份氧化剂、16份无机碱、0.6份有机酸、2.8份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。A water reducer for improving the performance of concrete, in parts by weight, each component and its content are: 400 parts of methallyl polyoxyethylene ether, 30 parts of acrylic acid, 8 parts of oxidizing agent, 16 parts of inorganic base, 0.6 part of Organic acid, 2.8 parts of inorganic ammonium salt; organic acid includes thioglycolic acid, and inorganic ammonium salt includes ammonium persulfate.
氧化剂为过氧乙酸。无机碱为氢氧化钠。巯基乙酸在有机酸中的质量分数为99％。过硫酸铵在无机铵盐中的质量分数为99％。The oxidizing agent is peracetic acid. The inorganic base is sodium hydroxide. The mass fraction of thioglycolic acid in organic acids is 99%. The mass fraction of ammonium persulfate in the inorganic ammonium salt is 99%.
实施例3Example 3
一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，380份甲基烯丙基聚氧乙烯醚、29份丙烯酸、7份氧化剂、15份无机碱、0.5份有机酸、2.9份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。A water reducer for improving the performance of concrete, in parts by weight, each component and its content are: 380 parts of methallyl polyoxyethylene ether, 29 parts of acrylic acid, 7 parts of oxidizing agent, 15 parts of inorganic base, 0.5 part of Organic acid, 2.9 parts of inorganic ammonium salt; organic acid includes thioglycolic acid, and inorganic ammonium salt includes ammonium persulfate.
氧化剂为重铬酸钠。无机碱为氢氧化钙。巯基乙酸在有机酸中的质量分数为95％。过硫酸铵在无机铵盐中的质量分数为98％。The oxidizing agent is sodium dichromate. The inorganic base is calcium hydroxide. The mass fraction of thioglycolic acid in organic acids is 95%. The mass fraction of ammonium persulfate in the inorganic ammonium salt is 98%.
同时我们选择了市场上普遍用的减水剂，采用减水率指标相同、固含量指标相同的几种减水剂做混凝土平行对比试验，试验结果见表1。At the same time, we selected the water-reducing agents commonly used in the market, and used several water-reducing agents with the same water-reducing rate index and the same solid content index to conduct parallel comparison tests on concrete. The test results are shown in Table 1.
表1实施例3的提高混凝土性能的减水剂与现有减水剂对比结果Table 1 Example 3 The water reducer for improving concrete performance and the comparison results of the existing water reducer
从表1可以看出，实施例3的提高混凝土性能的减水剂在抗泥性、流态性、保塑性、耐久性等方面指标要明显优于目前市场上同类型产品。It can be seen from Table 1 that the water reducer for improving concrete performance in Example 3 is significantly better than similar products currently on the market in terms of mud resistance, fluidity, plastic retention, and durability.
通过在工程实体结构中的应用表明，实施例3的提高混凝土减水率高、收缩率比低，提高混凝土防水抗渗能力，大大减少了混凝土后期自收缩。低氯、低碱降低了传统外加剂等带来的碱集料反应、钢筋锈蚀等不利因素。对水泥、粉煤灰和矿粉等有极强的亲和和分散能力，同时减少了孔隙溶液的表面张力，使生成的混凝土结构致密。The application in the engineering solid structure shows that the improved concrete water-reducing rate of embodiment 3 is high, the shrinkage ratio is low, the waterproof and anti-seepage ability of the concrete is improved, and the self-shrinkage of the concrete in the later stage is greatly reduced. Low chlorine and low alkali reduce the unfavorable factors such as alkali-aggregate reaction and steel corrosion caused by traditional admixtures. It has strong affinity and dispersion ability to cement, fly ash and mineral powder, etc., and at the same time reduces the surface tension of the pore solution, making the resulting concrete structure dense.
实施例4Example 4
一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，360份甲基烯丙基聚氧乙烯醚、28份丙烯酸、6份氧化剂、14份无机碱、0.4份有机酸、2.4份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。A water reducer for improving the performance of concrete, in parts by weight, each component and its content are: 360 parts of methallyl polyoxyethylene ether, 28 parts of acrylic acid, 6 parts of oxidizing agent, 14 parts of inorganic base, 0.4 part of Organic acid, 2.4 parts of inorganic ammonium salt; organic acid includes thioglycolic acid, and inorganic ammonium salt includes ammonium persulfate.
氧化剂为铬酸。无机碱为氢氧化钾。巯基乙酸在有机酸中的质量分数为91％。过硫酸铵在无机铵盐中的质量分数为96％。The oxidizing agent is chromic acid. The inorganic base is potassium hydroxide. The mass fraction of thioglycolic acid in organic acids is 91%. The mass fraction of ammonium persulfate in the inorganic ammonium salt is 96%.
实施例5Example 5
一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，360克甲基烯丙基聚氧乙烯醚、28克丙烯酸、6克氧化剂、14克无机碱、0.4克有机酸、2.4克无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。A water-reducing agent for improving concrete performance, in parts by weight, each component and its content are: 360 grams of methallyl polyoxyethylene ether, 28 grams of acrylic acid, 6 grams of oxidizing agent, 14 grams of inorganic base, 0.4 grams of Organic acid, 2.4 grams of inorganic ammonium salt; organic acid includes thioglycolic acid, and inorganic ammonium salt includes ammonium persulfate.
氧化剂为高锰酸钾。无机碱为氢氧化钠。巯基乙酸在有机酸中的质量分数为98％。过硫酸铵在无机铵盐中的质量分数为98％。The oxidizing agent is potassium permanganate. The inorganic base is sodium hydroxide. The mass fraction of thioglycolic acid in organic acids is 98%. The mass fraction of ammonium persulfate in the inorganic ammonium salt is 98%.
实施例6Example 6
一种提高混凝土性能的减水剂，以重量份数计，各组分及含量为，370份甲基烯丙基聚氧乙烯醚、28份丙烯酸、6份氧化剂、15无机碱、0.5份有机酸、2.5份无机铵盐；有机酸包括巯基乙酸，无机铵盐包括过硫酸铵。A water-reducing agent for improving concrete performance. In parts by weight, each component and its content are: 370 parts of methallyl polyoxyethylene ether, 28 parts of acrylic acid, 6 parts of oxidizing agent, 15 parts of inorganic base, 0.5 part of organic Acids, 2.5 parts inorganic ammonium salts; organic acids include thioglycolic acid, and inorganic ammonium salts include ammonium persulfate.
氧化剂为过硫酸铵。无机碱为氢氧化钾。巯基乙酸在有机酸中的质量分数为95％。过硫酸铵在无机铵盐中的质量分数为96％。The oxidizing agent is ammonium persulfate. The inorganic base is potassium hydroxide. The mass fraction of thioglycolic acid in organic acids is 95%. The mass fraction of ammonium persulfate in the inorganic ammonium salt is 96%.
总之，以上所述仅为本发明的较佳实施例，凡依本发明申请专利范围所作的均等变化与修饰，皆应属本发明专利的涵盖范围。In a word, the above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the patent of the present invention.
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