CN108328966B - Permeable mortar for sponge city and preparation method thereof - Google Patents

Permeable mortar for sponge city and preparation method thereof Download PDF

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Publication number
CN108328966B
CN108328966B CN201810067306.7A CN201810067306A CN108328966B CN 108328966 B CN108328966 B CN 108328966B CN 201810067306 A CN201810067306 A CN 201810067306A CN 108328966 B CN108328966 B CN 108328966B
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slag
parts
water
permeable mortar
oil
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CN108328966A (en
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张�杰
李运生
李海英
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Henan Institute of Engineering
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Henan Institute of Engineering
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02Macromolecular compounds
    • C04B26/10Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/14Polyepoxides
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00284Materials permeable to liquids
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a permeable mortar for sponge cities and a preparation method thereof, wherein the permeable mortar comprises slag, silica fume, crushed pebbles and a reinforcing agent, and the preparation method comprises the following steps: adding the modified slag, silica fume and crushed pebbles into a stirrer, stirring for 5-10min, adding 1-3 parts of concentrated sulfuric acid, soaking the activated carbon for 18-24h, 4-6 parts of reinforcing agent and 1-3 parts of wetting dispersant, continuously stirring for 2-5min, adding 3-5 parts of silane coupling agent and drier, continuously stirring for 10-20min, and uniformly stirring to obtain the water-permeable mortar.

Description

Permeable mortar for sponge city and preparation method thereof
Technical Field
The invention relates to the technical field of building materials, in particular to a permeable mortar for sponge cities and a preparation method thereof.
Background
At present, along with the development of economy, the pace of urban modern construction is accelerated, most cities are deficient in underground water resources, heat island effect and the like in succession, researches find that the problems are related to the fact that natural soil vegetation in urban construction is continuously covered by buildings and various waterproof bottom surfaces, the proportion of waterproof ground surfaces of many domestic cities exceeds 70%, the permeable property of the original natural ground surfaces is changed, the ecological environment is greatly damaged, particularly for cities with more rainwater, if the ground surfaces are paved by non-permeable materials such as cement, asphalt, marble and the like, the waterproof ground surfaces completely prevent rainwater from directly permeating into the ground during raining, and the full-area water accumulation makes people inconvenient to go out; causes precious water resource waste, increases the burden of urban drainage facilities, and further increases the drought and water shortage problems of cities due to a large amount of loss of rainwater.
Disclosure of Invention
In order to solve the problems, the invention provides the permeable mortar for the sponge city and the preparation method thereof, so that the slag is effectively utilized, and the prepared permeable mortar has better strength and water permeability.
The invention is realized by the following technical scheme:
the permeable mortar for the sponge city comprises the following raw materials in parts by weight: 45-50 parts of slag, 12-15 parts of silica fume, 6-8 parts of crushed pebbles and 4-6 parts of reinforcing agent.
Preferably, the slag is blast furnace heavy slag.
Preferably, the reinforcing agent is a mixture of aqueous epoxy acrylic emulsion and liquid polybutadiene, and the weight parts of the reinforcing agent are respectively as follows: 3-5 parts of water-based epoxy acrylic emulsion and 6-8 parts of liquid polybutadiene.
A preparation method of permeable mortar for sponge cities comprises the following steps:
the method comprises the following steps: modifying the slag to obtain modified slag;
step two: adding the modified slag, the silica fume and the crushed pebbles into a stirrer, stirring for 5-10min, adding 1-3 parts of concentrated sulfuric acid, soaking the activated carbon for 18-24h, 4-6 parts of reinforcing agent and 1-3 parts of wetting dispersant, continuously stirring for 2-5min, adding 3-5 parts of silane coupling agent, continuously stirring for 10-20min, and uniformly stirring to obtain the permeable mortar.
Preferably, the slag modification method includes the steps of:
(a) heating slag by microwave, wherein the microwave frequency is 2-4kw, and the irradiation time is 5-7 min;
(b) soaking the slag heated by microwave in tung oil for 18-24h, then performing ultrasonic treatment for 1-3h, cleaning the slag by using deionized water, soaking the slag soaked by the tung oil in a mixed material of cement slurry doped with fly ash for 40-48h, and cleaning the slag by using deionized water for later use, wherein the fly ash accounts for 20-30% of the mixture, and the ratio of the slag to the mixed material is 1:8-1: 10;
(c) calcining the slag obtained in the step b to obtain modified slag, wherein the calcining temperature is as follows: the calcining time is 1-3h at 200-400 ℃.
Preferably, the reinforcing agent is a mixture of aqueous epoxy acrylic emulsion and liquid polybutadiene, and the weight parts of the reinforcing agent are respectively as follows: 3-5 parts of water-based epoxy acrylic emulsion and 6-8 parts of liquid polybutadiene.
Preferably, the silane coupling agent is vinyltrimethylsilane.
Preferably, the wetting dispersant is any one of alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl naphthalene sulfonate and ethoxy p-nonyl phenol.
Preferably, the prepared water-permeable mortar is stored in a vacuum-sealed environment.
The invention has the beneficial effects that:
(1) the method comprises the steps of heating the heavy blast furnace slag by microwave to remove moisture, soaking the heavy blast furnace slag heated by microwave in tung oil for 18-24 hours, cleaning the heavy blast furnace slag by deionized water, soaking the heavy blast furnace slag soaked by the tung oil in a mixture of cement paste doped with fly ash for 40-48 hours, cleaning the heavy blast furnace slag by deionized water to increase the strength of the heavy blast furnace slag, and calcining the heavy blast furnace slag soaked in the mixture to ensure that the heavy blast furnace slag is easy to stir and break into required size;
(2) adding modified slag, silica fume and crushed pebbles into a stirrer, stirring for 5-10min, adding 3-5 parts of aqueous epoxy acrylic emulsion, 6-8 parts of liquid polybutadiene and 1-3 parts of wetting dispersant, continuously stirring for 2-5min, adding 3-5 parts of silane coupling agent and 1-3 parts of drier, continuously stirring for 10-20min, uniformly stirring to obtain the permeable mortar, and quickly oxidizing and crosslinking the resin in the air under the action of the coupling agent without using traditional cement and water to realize hardening.
Detailed Description
The invention will be further illustrated with reference to specific examples:
example 1
The permeable mortar for the sponge city comprises the following raw materials in parts by weight: 45 parts of slag, 12 parts of silica fume, 6 parts of crushed pebbles, 4 parts of an aqueous epoxy acrylic emulsion and liquid polybutadiene.
A preparation method of permeable mortar for sponge cities comprises the following steps:
the method comprises the following steps: modifying the slag to obtain modified slag;
step two: adding modified slag, silica fume and crushed pebbles into a stirrer, stirring for 5min, adding 1 part of concentrated sulfuric acid, soaking the mixture of 18h of activated carbon, 4 parts of aqueous epoxy acrylic emulsion and liquid polybutadiene (wherein the amount of the aqueous epoxy acrylic emulsion is 3 parts, the amount of the liquid polybutadiene is 6 parts), and 1 part of alkyl sulfonate, continuing stirring for 2min, adding 3 parts of vinyltrimethylsilane and 1 part of drier, wherein the drier comprises a mixture of cobalt iso-octoate, manganese iso-octoate and zinc iso-octoate (wherein the amount of the cobalt iso-octoate is 7 parts, the amount of the manganese iso-octoate is 1 part, and the amount of the zinc iso-octoate is 2 parts), adding 0.5 part of paratoluenesulfonic acid dissolved in bio-oil into the drier, wherein the ratio of the paratoluenesulfonic acid to the bio-oil is 1:4, the bio-oil comprises larch bio-oil or cotton stalk bio-oil, and can improve the curing speed of the water-permeable mortar, the permeable mortar is prevented from being easily cracked and slotted due to the addition of the drier, the permeable mortar is continuously stirred for 10min and is uniformly stirred to obtain the permeable mortar, and the prepared permeable mortar is stored in a vacuum sealed environment;
preferably, the slag modification method includes the steps of:
(a) heating slag by microwave, wherein the microwave frequency is 2kw, and the irradiation time is 5 min;
(b) soaking the slag heated by microwave in tung oil for 18h, then performing ultrasonic treatment for 1h, cleaning the slag by using deionized water, soaking the slag soaked by the tung oil in a mixed material of cement paste doped with fly ash for 40h, and cleaning the slag by using the deionized water for later use, wherein the fly ash accounts for 20% of the mixture, and the ratio of the slag to the mixed material is 1: 8;
(c) calcining the slag obtained in the step b to obtain modified slag, wherein the calcining temperature is as follows: the calcination time is 1h at 200 ℃.
The slag is blast furnace heavy slag.
Example 2
The permeable mortar for the sponge city comprises the following raw materials in parts by weight: a mixture of 48 parts of slag, 14 parts of silica fume, 7 parts of crushed pebbles, 5 parts of aqueous epoxy acrylic emulsion and liquid polybutadiene.
A preparation method of permeable mortar for sponge cities comprises the following steps:
the method comprises the following steps: modifying the slag to obtain modified slag;
step two: adding modified slag, silica fume and crushed pebbles into a stirrer, stirring for 8min, adding 2 parts of concentrated sulfuric acid, soaking a mixture of 20h of activated carbon, 5 parts of aqueous epoxy acrylic emulsion and liquid polybutadiene (wherein the aqueous epoxy acrylic emulsion is 4 parts, and the liquid polybutadiene is 7 parts), and 2 parts of sodium alkyl benzene sulfonate, continuing stirring for 3min, adding 4 parts of vinyltrimethylsilane and 2 parts of a drier, wherein the drier is a mixture of cobalt iso-octoate, manganese iso-octoate and zinc iso-octoate (wherein the cobalt iso-octoate is 8 parts, the manganese iso-octoate is 2 parts, and the zinc iso-octoate is 3 parts), adding 0.6 part of paratoluenesulfonic acid dissolved in bio-oil into the drier, wherein the ratio of the paratoluenesulfonic acid to the bio-oil is 1:5, the bio-oil comprises larch bio-oil or cotton straw bio-oil, and can improve the curing speed of the water-permeable mortar, and the permeable mortar is prevented from being easily cracked and slotted due to the addition of the drier, the permeable mortar is continuously stirred for 15min and can be obtained after uniform stirring, and the prepared permeable mortar is stored in a vacuum-sealed environment.
The slag modification method comprises the following steps:
(a) heating slag by microwave, wherein the microwave frequency is 3kw, and the irradiation time is 6 min;
(b) soaking the slag heated by microwave in tung oil for 20 hours, then performing ultrasonic treatment for 2 hours, cleaning the slag by using deionized water, soaking the slag soaked by the tung oil in a mixed material of cement paste doped with fly ash for 45 hours, and cleaning the slag by using the deionized water for later use, wherein the fly ash accounts for 25 percent of the mixture, and the ratio of the slag to the mixed material is 1: 9;
(c) calcining the slag obtained in the step b to obtain modified slag, wherein the calcining temperature is as follows: the calcination time is 2h at 300 ℃.
The slag is blast furnace heavy slag.
Example 3
The permeable mortar for the sponge city comprises the following raw materials in parts by weight: a mixture of 50 parts of slag, 15 parts of silica fume, 8 parts of crushed pebbles, 6 parts of aqueous epoxy acrylic emulsion and liquid polybutadiene.
A preparation method of permeable mortar for sponge cities comprises the following steps:
the method comprises the following steps: modifying the slag to obtain modified slag;
step two: adding modified slag, silica fume and crushed pebbles into a stirrer, stirring for 10min, adding 3 parts of concentrated sulfuric acid, soaking the mixture of 24h of activated carbon, 6 parts of aqueous epoxy acrylic emulsion and liquid polybutadiene, (wherein 5 parts of the aqueous epoxy acrylic emulsion, 8 parts of the liquid polybutadiene) and 3 parts of alkyl naphthalene sulfonate, continuing stirring for 5min, adding 5 parts of vinyltrimethylsilane and 3 parts of a drier, wherein the drier is a mixture of cobalt iso-octoate, manganese iso-octoate and zinc iso-octoate (wherein 9 parts of cobalt iso-octoate, 3 parts of manganese iso-octoate and 4 parts of zinc iso-octoate), the drier is also added with 0.7 part of p-toluenesulfonic acid dissolved in bio-oil, the ratio of the p-toluenesulfonic acid to the bio-oil is 1:6, the bio-oil comprises larch bio-oil or cotton stalk bio-oil, and can improve the curing speed of the water-permeable mortar, and the permeable mortar is prevented from being easily cracked and slotted due to the addition of the drier, the permeable mortar is continuously stirred for 20min and can be obtained after uniform stirring, and the prepared permeable mortar is stored in a vacuum-sealed environment.
The slag modification method comprises the following steps:
(a) heating slag by microwave, wherein the microwave frequency is 4kw, and the irradiation time is 7 min;
(b) soaking the slag heated by microwave in tung oil for 24 hours, then performing ultrasonic treatment for 3 hours, cleaning the slag by using deionized water, soaking the slag soaked by the tung oil in a mixed material of cement paste doped with fly ash for 48 hours, and cleaning the slag by using the deionized water for later use, wherein the fly ash accounts for 30 percent of the mixture, and the ratio of the slag to the mixed material is 1: 10;
(c) calcining the slag obtained in the step b to obtain modified slag, wherein the calcining temperature is as follows: the calcination time is 3h at 400 ℃.
The slag is blast furnace heavy slag.
The water permeable mortar prepared by the invention has the water permeability coefficient of 4-17mm/s, the compressive strength of 20-30Mpa and the breaking strength of 3-6 Mpa, and the water permeable mortar is ensured to have higher compressive strength on the premise of better water permeability.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a sponge city is with mortar that permeates water which characterized in that: the water-permeable mortar comprises the following raw materials in parts by weight: 45-50 parts of slag, 12-15 parts of silica fume, 6-8 parts of crushed pebbles and 4-6 parts of reinforcing agent;
the preparation method of the permeable mortar for the sponge city comprises the following steps:
the method comprises the following steps: modifying the slag to obtain modified slag;
the slag modification method comprises the following steps:
(a) heating slag by microwave, wherein the microwave frequency is 2-4kw, and the irradiation time is 5-7 min;
(b) soaking the slag heated by microwave in tung oil for 18-24h, performing ultrasonic treatment for 1-3h, cleaning the slag by using deionized water, soaking the slag soaked by the tung oil in a mixed material of cement slurry doped with fly ash for 40-48h, and cleaning the slag by using the deionized water for later use, wherein the fly ash accounts for 20-30% of the mixture, and the ratio of the slag to the mixed material is 1:8-1: 10;
(c) calcining the slag obtained in the step b to obtain modified slag, wherein the calcining temperature is as follows: calcining at 200-400 deg.C for 1-3 h;
step two: adding modified slag, silica fume and crushed pebbles into a stirrer, stirring for 5-10min, adding 1-3 parts of concentrated sulfuric acid, soaking the activated carbon for 18-24h, 4-6 parts of reinforcing agent, 1-3 parts of wetting dispersant and 1 part of drier, continuously stirring for 2-5min, adding 3-5 parts of silane coupling agent, continuously stirring for 10-20min, and uniformly stirring to obtain the water-permeable mortar, wherein the drier comprises a mixture of cobalt iso-octoate, manganese iso-octoate and zinc iso-octoate, and 0.5 part of p-toluenesulfonic acid dissolved in bio-oil is added, the ratio of the p-toluenesulfonic acid to the bio-oil is 1:4, and the bio-oil comprises larch bio-oil or cotton straw bio-oil.
2. The sponge city water-permeable mortar according to claim 1, which is characterized in that: the slag is blast furnace heavy slag.
3. The sponge city water-permeable mortar according to claim 1, which is characterized in that: the reinforcing agent is a mixture of water-based epoxy acrylic emulsion and liquid polybutadiene, and the weight parts of the reinforcing agent are respectively as follows: 3-5 parts of water-based epoxy acrylic emulsion and 6-8 parts of liquid polybutadiene.
4. The sponge city water-permeable mortar according to claim 1, which is characterized in that: the silane coupling agent is vinyl trimethylsilane.
5. The sponge city water-permeable mortar according to claim 1, which is characterized in that: the wetting dispersant is any one of alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl naphthalene sulfonate and ethoxy p-nonyl phenol.
6. The sponge city water-permeable mortar according to claim 1, which is characterized in that: the prepared water-permeable mortar is stored in a vacuum-sealed environment.
CN201810067306.7A 2018-01-24 2018-01-24 Permeable mortar for sponge city and preparation method thereof Active CN108328966B (en)

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CN108328966B true CN108328966B (en) 2020-11-24

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101293763B (en) * 2008-06-26 2010-10-13 河南国基建设集团有限公司 Water permeable concrete and pavement construction method
KR101021883B1 (en) * 2010-08-25 2011-03-18 김길수 A net for repairing/ reinforcing concrete structure, mortar composition and repairing/reinforcing method for concrete structure using the same
CN105887609B (en) * 2016-04-13 2018-07-03 浙江泽汉环境科技有限公司 A kind of construction method on sponge urban ecology diafiltration ground
CN106316295A (en) * 2016-08-24 2017-01-11 重庆建工新型建材有限公司 Sand based permeable dry mix and mixture thereof
CN106830795A (en) * 2017-01-21 2017-06-13 浙江益森科技股份有限公司 A kind of sponge city preparation method of the graft type permeable mortar of compoiste adhering material
CN107010853B (en) * 2017-04-26 2019-11-15 阜阳市鑫源建材有限公司 A kind of method that microwave synergy is activated S95 grade slag powder

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