CN107572864B - Water-permeable concrete reinforcing agent and preparation method thereof - Google Patents
Water-permeable concrete reinforcing agent and preparation method thereof Download PDFInfo
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- CN107572864B CN107572864B CN201710863146.2A CN201710863146A CN107572864B CN 107572864 B CN107572864 B CN 107572864B CN 201710863146 A CN201710863146 A CN 201710863146A CN 107572864 B CN107572864 B CN 107572864B
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Abstract
The invention discloses a water-permeable concrete reinforcing agent and a preparation method thereof, wherein the reinforcing agent comprises the following raw materials in parts by weight: 50-80 parts of alcohol amine organic matter, 40-60 parts of polyoxyethylene alkylphenol ether, 20-30 parts of polyhydric alcohol, 10-20 parts of calcium carbonate whisker, 15-25 parts of sodium lignosulfonate, 4-8 parts of dioctyl sodium sulfosuccinate, 3-5 parts of rare earth aluminate coupling agent, 5-10 parts of sodium tripolyphosphate and 1-3 parts of antioxidant. The reinforcing agent has good compatibility among raw materials, can obviously improve the strength of the water-permeable concrete, can keep a certain through hole to meet the requirement of water permeability, and simultaneously ensures that the concrete has good water-reducing, wear-resisting, oxidation-resisting and water-retaining properties.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a water-permeable concrete reinforcing agent and a preparation method thereof.
Background
The pervious concrete is also called porous concrete, and is sand-free concrete and pervious terrace. It is a porous light concrete made up by using aggregate, cement, reinforcing agent and water through a certain preparation process. The pervious concrete contains no fine aggregate, and is a honeycomb structure with holes uniformly distributed by coating a thin layer of cement slurry on the surface of the coarse aggregate and mutually bonding, so the pervious concrete has the characteristics of air permeability, water permeability, light weight and the like. The development and use of the pervious concrete can solve the problems that rainwater flows into the ground, the underground water is effectively supplemented, and urban environment problems such as rapid decline of urban underground water level and the like are solved; and can effectively eliminate the harm of oil compounds on the ground and the like to the environmental pollution; meanwhile, the composite material is an excellent paving material which can protect underground water, maintain ecological balance and relieve urban heat island effect. Therefore, the pervious concrete has special significance in the aspects of benign development of human living environment, urban rainwater management, water pollution prevention and control and the like.
The pervious concrete is high-permeability mortar-free porous concrete, products made of the pervious concrete form a large number of pores, contact among aggregates of the products is point contact, and the required bonding strength can hardly be achieved only by cement, so that a reinforcing agent is required to be adopted. The concrete reinforcing agent is added together with the concrete admixture in the concrete mixing process to improve the compressive strength of the concrete, thereby achieving the purposes of reducing the using amount of cementing materials and saving the production cost of the concrete. However, a great deal of literature reports that the prior water-permeable concrete reinforcing agent generally has the following defects: poor compatibility with concrete, poor reinforcing effect and difficulty in meeting the strength of water-permeable concreteAnd (5) degree requirement.
The raw materials adopted by the reinforcing agent have poor environmental protection performance and are easy to cause environmental pollution, and the concept of the reinforcing agent is contrary to the concept of green buildings.
The reinforcing agent has no water reducing effect, and the water reducing agent is compounded with the retarder due to the existence of saturated mixing amount, so that if the mixing amount is increased too much, the water reducing effect is reduced, the setting time of the concrete is delayed, and the later strength of the concrete is possibly influenced.
Although the reinforcing effect is achieved, the through pores cannot be maintained to satisfy the requirement of water permeability.
High raw material cost, complex preparation process and the like.
Disclosure of Invention
The invention provides a novel water-permeable concrete reinforcing agent and a preparation method thereof, aiming at the problems of the existing concrete reinforcing agent. The invention not only can improve the strength of the water permeable concrete and simultaneously can keep a certain through hole to meet the requirement of the water permeability of the concrete, but also has the advantages of short solidification time, good water reducing effect, strong oxidation resistance, low raw material cost, simple preparation process and the like.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a water permeability concrete reinforcing agent comprises the following raw materials in parts by weight: 50-80 parts of alcohol amine organic matter, 40-60 parts of polyoxyethylene alkylphenol ether, 20-30 parts of polyhydric alcohol, 15-25 parts of calcium carbonate whisker, 10-20 parts of sodium lignosulfonate, 4-8 parts of dioctyl sodium sulfosuccinate, 3-5 parts of rare earth aluminate coupling agent, 5-10 parts of sodium tripolyphosphate and 1-3 parts of antioxidant.
Preferably, the alkanolamine organic substance is one or more than two of triisopropanolamine, triethanolamine and diisopropanolamine.
Preferably, the polyoxyethylene alkylphenol ether is one or two of polyoxyethylene octyl phenol ether and polyoxyethylene nonyl phenol ether.
Preferably, the above-mentioned polyhydric alcohol is one or more of ethylene glycol, glycerol and pentaerythritol.
Preferably, the antioxidant is one or more of antioxidant 1010, antioxidant CA and antioxidant 168.
The raw materials used in the scheme of the invention are all commercial products.
The preparation method of the water permeability concrete reinforcing agent comprises the following steps:
(1) weighing the components according to the proportion, adding the alcohol amine organic matter, polyoxyethylene alkylphenol ether and polyhydric alcohol into a reactor, and stirring for 10-20min at the temperature of 40-60 ℃ and the rotating speed of 300-500r/min to obtain a mixture;
(2) adding calcium carbonate crystal whisker, sodium lignosulphonate, dioctyl sodium sulfosuccinate and rare earth aluminate coupling agent into the mixture, adding 100-150 parts of water, and continuously stirring for 20-30min to obtain emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
Compared with the prior art, the invention has the following beneficial effects:
1. the reinforcing agent is prepared from various organic and inorganic raw materials, has good compatibility among the raw materials, can improve the bonding force among pervious concrete, further obviously improves the strength of the pervious concrete, can keep a certain through hole to meet the requirement of the pervious concrete, and simultaneously ensures that the concrete has good water reducing, wear resisting, oxidation resisting and water retaining properties.
2. According to the formula disclosed by the invention, sodium lignosulfonate and dioctyl sodium sulfosuccinate are used as water reducing agents, so that the water reducing effect is remarkable, the cement particles can be effectively prevented from agglomerating, the fluidity of concrete processing is improved, the dosage of cement is reduced, and the cost is saved.
3. The rare earth aluminate coupling agent is added in the formula, so that the interface action between organic matters and concrete can be obviously improved, the binding power between raw materials can be improved, the mechanical property of the concrete can be improved, and simultaneously, the dispersion state of concrete filler in the organic matters can be improved, so that the concrete can keep a certain through hole to meet the requirement of water permeability.
4. When the reinforcing agent is applied to the water permeable concrete, the compressive strength at 7d is more than or equal to 30MPa, the compressive strength at 28d is more than or equal to 40MPa, the flexural strength at 7d is more than or equal to 3.7MPa, the flexural strength at 28d is more than or equal to 4.3MPa, and the wear resistance of G0-30 is more than or equal to 3.2kg/m2G0-30-60 wear resistance more than or equal to 18kg/m2And the water permeability coefficient is more than or equal to 3.5 mm/s.
5. The invention also has the advantages of environment-friendly raw materials, safe construction, lower cost, simple preparation process and the like, has good social, ecological and economic benefits, and is easy to realize industrial production.
Detailed Description
The present invention will be further described with reference to the following specific examples, which do not constitute the scope of the present invention.
Example 1
A water permeability concrete reinforcing agent comprises the following raw materials in parts by weight: 60 parts of triisopropanolamine, 40 parts of polyoxyethylene octylphenol ether, 25 parts of glycerol, 15 parts of calcium carbonate whisker, 15 parts of sodium lignosulfonate, 4 parts of dioctyl sodium sulfosuccinate, 3 parts of rare earth aluminate coupling agent, 8 parts of sodium tripolyphosphate and 2 parts of 1010 antioxidant.
The preparation method of the reinforcing agent comprises the following steps:
(1) weighing the components according to the proportion, adding triisopropanolamine, polyoxyethylene octylphenol ether and glycerol into a reactor, and stirring for 20min at the temperature of 50 ℃ and the rotating speed of 300r/min to obtain a mixture;
(2) adding calcium carbonate crystal whiskers, sodium lignosulfonate, dioctyl sodium sulfosuccinate and a rare earth aluminate coupling agent into the mixture, adding 100 parts of water, and continuously stirring for 30min to obtain an emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
Example 2
A water permeability concrete reinforcing agent comprises the following raw materials in parts by weight: 70 parts of triethanolamine, 50 parts of polyoxyethylene octyl phenol ether, 30 parts of ethylene glycol, 10 parts of calcium carbonate whisker, 12 parts of sodium lignosulfonate, 6 parts of dioctyl sodium sulfosuccinate, 4 parts of rare earth aluminate coupling agent, 5 parts of sodium tripolyphosphate and 3 parts of CA antioxidant.
The preparation method of the reinforcing agent comprises the following steps:
(1) weighing the components according to the proportion, adding triethanolamine, polyoxyethylene octyl phenol ether and ethylene glycol into a reactor, and stirring for 15min at the temperature of 40 ℃ and the rotating speed of 500r/min to obtain a mixture;
(2) adding calcium carbonate whiskers, sodium lignosulfonate, dioctyl sodium sulfosuccinate and a rare earth aluminate coupling agent into the mixture, adding 120 parts of water, and continuously stirring for 20min to obtain an emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
Example 3
A water permeability concrete reinforcing agent comprises the following raw materials in parts by weight: 50 parts of diisopropanolamine, 60 parts of polyoxyethylene nonyl phenol ether, 20 parts of pentaerythritol, 15 parts of calcium carbonate whisker, 10 parts of sodium lignosulfonate, 8 parts of dioctyl sodium sulfosuccinate, 5 parts of rare earth aluminate coupling agent, 6 parts of sodium tripolyphosphate and 2 parts of 168 antioxidant.
The preparation method of the reinforcing agent comprises the following steps:
(1) weighing the components according to the proportion, adding diisopropanolamine, polyoxyethylene nonyl phenol ether and pentaerythritol into a reactor, and stirring for 10min at the temperature of 60 ℃ and the rotating speed of 500r/min to obtain a mixture;
(2) adding calcium carbonate whiskers, sodium lignosulfonate, dioctyl sodium sulfosuccinate and a rare earth aluminate coupling agent into the mixture, adding 150 parts of water, and continuously stirring for 30min to obtain an emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
Example 4
A water permeability concrete reinforcing agent comprises the following raw materials in parts by weight: 50 parts of triisopropanolamine, 30 parts of triethanolamine, 45 parts of polyoxyethylene nonyl phenol ether, 25 parts of glycerol, 20 parts of calcium carbonate whiskers, 18 parts of sodium lignosulfonate, 8 parts of dioctyl sodium sulfosuccinate, 5 parts of rare earth aluminate coupling agent, 10 parts of sodium tripolyphosphate and 2 parts of 1010 antioxidant.
The preparation method of the reinforcing agent comprises the following steps:
(1) weighing the components according to the proportion, adding triisopropanolamine, triethanolamine, polyoxyethylene nonyl phenol ether and glycerol into a reactor, and stirring for 20min at the temperature of 50 ℃ and the rotating speed of 300r/min to obtain a mixture;
(2) adding calcium carbonate whiskers, sodium lignosulfonate, dioctyl sodium sulfosuccinate and a rare earth aluminate coupling agent into the mixture, adding 150 parts of water, and continuously stirring for 25min to obtain an emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
Example 5
A water permeability concrete reinforcing agent comprises the following raw materials in parts by weight: 60 parts of triisopropanolamine, 30 parts of polyoxyethylene octylphenol ether, 20 parts of polyoxyethylene nonylphenol ether, 20 parts of pentaerythritol, 15 parts of calcium carbonate whiskers, 20 parts of sodium lignosulfonate, 6 parts of dioctyl sodium sulfosuccinate, 4 parts of rare earth aluminate coupling agent, 8 parts of sodium tripolyphosphate, 2 parts of 1010 antioxidant and 1 part of CA antioxidant.
The preparation method of the reinforcing agent comprises the following steps:
(1) weighing the components according to the proportion, adding triisopropanolamine, polyoxyethylene nonyl phenol ether and pentaerythritol into a reactor, and stirring for 10min at the temperature of 60 ℃ and the rotating speed of 300r/min to obtain a mixture;
(2) adding calcium carbonate whiskers, sodium lignosulfonate, dioctyl sodium sulfosuccinate and a rare earth aluminate coupling agent into the mixture, adding 120 parts of water, and continuously stirring for 20min to obtain an emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
Example 6
A water permeability concrete reinforcing agent comprises the following raw materials in parts by weight: 65 parts of triethanolamine, 40 parts of polyoxyethylene octyl phenol ether, 20 parts of glycerol, 10 parts of pentaerythritol, 15 parts of calcium carbonate whiskers, 15 parts of sodium lignosulfonate, 5 parts of dioctyl sodium sulfosuccinate, 5 parts of a rare earth aluminate coupling agent, 6 parts of sodium tripolyphosphate and 3 parts of a CA antioxidant.
The preparation method of the reinforcing agent comprises the following steps:
(1) weighing the components according to the proportion, adding triethanolamine, polyoxyethylene octyl phenol ether, polyoxyethylene nonyl phenol ether and glycerol/pentaerythritol into a reactor, and stirring for 15min at the temperature of 50 ℃ and the rotating speed of 500r/min to obtain a mixture;
(2) adding calcium carbonate crystal whiskers, sodium lignosulfonate, dioctyl sodium sulfosuccinate and a rare earth aluminate coupling agent into the mixture, adding 100 parts of water, and continuously stirring for 30min to obtain an emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
Application examples
The enhancers prepared in examples 1-6 above were applied to pervious concrete, wherein the pervious concrete had the following formulation: the filler is ordinary Portland cement 42.5 (the dosage is 320 kg/m)3）The aggregate is single-particle-grade granite (the particle diameter is 2-5mm), the water-cement ratio is 0.3, and the aggregate is collectedThe ash ratio is 4.0, and the dosage of the reinforcing agent is 1.5 percent of the weight of the cement. The pervious concrete is prepared according to a conventional method. The compressive strength, the breaking strength, the water permeability coefficient and the wear resistance of the water permeable concrete are tested according to the industrial standard, and the test results are shown in table 1.
Table 1: performance test results of water-permeable concrete added with reinforcing agent of each example
From the above table, it can be seen that the reinforcing agent of the present invention not only can improve the strength and wear resistance of the water-permeable concrete, but also can maintain a certain amount of through pores to meet the requirement of water permeability of the concrete.
Claims (2)
1. A water permeability concrete reinforcing agent is characterized in that: the composite material comprises the following raw materials in parts by weight:
50-80 parts of alcohol amine organic matter, 40-60 parts of polyoxyethylene alkylphenol ether, 20-30 parts of polyhydric alcohol, 10-20 parts of calcium carbonate whisker, 15-25 parts of sodium lignosulfonate, 4-8 parts of dioctyl sodium sulfosuccinate, 3-5 parts of rare earth aluminate coupling agent, 5-10 parts of sodium tripolyphosphate and 1-3 parts of antioxidant;
the alcamines organic matter is one or more than two of triisopropanolamine, triethanolamine and diisopropanolamine;
the polyoxyethylene alkylphenol ether is one or two combinations of polyoxyethylene octyl phenol ether and polyoxyethylene nonyl phenol ether;
the polyalcohol is one or a combination of more of ethylene glycol, glycerol and pentaerythritol;
the antioxidant is one or more of antioxidant 1010, antioxidant CA and antioxidant 168.
2. A method for preparing the water permeable concrete reinforcing agent of claim 1, wherein: the method comprises the following steps:
(1) weighing the components according to the proportion, adding the alcohol amine organic matter, polyoxyethylene alkylphenol ether and polyhydric alcohol into a reactor, and stirring for 10-20min at the temperature of 40-60 ℃ and the rotating speed of 300-500r/min to obtain a mixture;
(2) adding calcium carbonate crystal whisker, sodium lignosulphonate, dioctyl sodium sulfosuccinate and rare earth aluminate coupling agent into the mixture, adding 100-150 parts of water, and continuously stirring for 20-30min to obtain emulsion;
(3) and (3) adding sodium tripolyphosphate and an antioxidant into the emulsion obtained in the step (2), and uniformly stirring to obtain the water-permeable concrete reinforcing agent.
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| CN111320404A (en) * | 2020-03-31 | 2020-06-23 | 广东巨三实业有限公司 | Concrete reinforcing agent and preparation method thereof |
| CN113354324A (en) * | 2021-07-07 | 2021-09-07 | 广东悦谷道路材料有限公司 | Reinforcing agent, pervious concrete and processing method of pervious concrete |
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