CN108609997B - Nano Monte soil modified bottom ash building cementing material, mortar, concrete and preparation method - Google Patents
Nano Monte soil modified bottom ash building cementing material, mortar, concrete and preparation method Download PDFInfo
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- CN108609997B CN108609997B CN201810284932.1A CN201810284932A CN108609997B CN 108609997 B CN108609997 B CN 108609997B CN 201810284932 A CN201810284932 A CN 201810284932A CN 108609997 B CN108609997 B CN 108609997B
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- 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
- C04B28/34—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 cold phosphate binders
- C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- 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
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Abstract
The invention discloses a nano Monte soil modified bottom ash building cementing material, mortar, concrete and a preparation method thereof, wherein the nano Monte soil modified bottom ash building cementing material comprises the following components in parts by weight: 1000-4000 parts of waste incineration bottom ash; 425#1000-4000 parts of cement; 20-160 parts of sodium hydroxide; 1-8 parts of alpha-olefin sodium sulfonate; 0.1-6 parts of sodium phosphate; 20-200 parts of nano Monte soil; 10-150 parts of triisopropanolamine; 20-180 parts of a water reducing agent and mixing water, wherein the water-solid ratio is 0.2-0.5. According to the technical scheme provided by the invention, the waste incineration bottom ash is effectively used, the obtained mortar and concrete have better performance, and the problem of pollution of the bottom ash can be effectively solved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a nano Monte soil modified bottom ash building cementing material, mortar, concrete and a preparation method thereof.
Background
The main gelled material that uses at present in engineering construction is cement, and cement not only can consume a large amount of energy in process of production, also can discharge a large amount of carbon dioxide simultaneously, and this can cause very big influence to the environment, consequently seeks a novel gelled material that can replace cement preparation high performance concrete, has important meaning to environmental protection and sustainable development.
Disclosure of Invention
The invention mainly aims to provide a nano Monte soil modified bottom ash building cementing material, mortar, concrete and a preparation method thereof, and aims to provide a novel cementing material capable of replacing cement to prepare high-performance concrete.
In order to realize the purpose, the invention provides a nano Monte soil modified bottom ash building gel material which comprises the following components in parts by weight:
preferably, the nano Monte soil modified bottom ash building gel material comprises the following components in parts by mass:
preferably, the waste incineration bottom ash is ground by using a ball mill until the particle size is 0.02-0.07 mm.
Preferably, the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
The invention also provides a preparation method of the nano Monte soil modified bottom ash building gel material, which comprises the following steps:
dissolving nano-montmorillonite and alpha-olefin sodium sulfonate in 2/3 mixing water to form a first solution;
dissolving triisopropanolamine and a water reducing agent in the remaining 1/3 mixed water to form a second solution;
mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate into powder through dry stirring, adding a second solution into the powder, stirring for the first time, and adding 425#And stirring the cement and the first solution for the second time to obtain the nano Monte soil modified bottom ash building gel material.
Preferably, the waste incineration bottom ash, the sodium hydroxide and the sodium phosphate are mixed into powder through dry mixing, then the second solution is added into the powder for first stirring, and then 42 is added simultaneously5#Cement and the first solution are stirred for the second time to obtain the nano Monte soil modified bottom ash building gel material, and the method specifically comprises the following steps:
dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate in a forced mixer for 5-10 min to form powder, then adding the second solution into the powder, stirring at the rotating speed of 135-145 r/min for 5-10 min,then adding 425 at the same time#And stirring the cement and the first solution at the rotating speed of 280-290 r/min for 8-12 min to obtain the nano Monte soil modified bottom ash building gel material.
The invention further provides a nano Monte soil modified bottom ash building mortar which comprises a nano Monte soil modified bottom ash building cementing material and sand, wherein the mass of the sand is 1.5-3.5 times that of the nano Monte soil modified bottom ash building cementing material;
the nano Monte soil modified bottom ash building gel material is the nano Monte soil modified bottom ash building gel material.
Preferably, the particle size of the sand is 0.3-4.0 mm.
The invention further provides the nano Monte soil modified bottom ash building concrete which comprises a nano Monte soil modified bottom ash building cementing material, sand and stones, wherein the mass of the sand and the stones is 0.8-2 times and 2-4 times of that of the nano Monte soil modified bottom ash building cementing material;
the nano Monte soil modified bottom ash building gel material is the nano Monte soil modified bottom ash building gel material.
Preferably, the particle size of the sand is 0.3-4.0 mm; and/or the particle size of the stones is 5-35 mm.
The invention provides a nano Monte soil modified bottom ash building cementing material, which is prepared by burning waste bottom ash and 425#The cement, the sodium hydroxide, the alpha-olefin sodium sulfonate, the sodium phosphate, the nano Monte soil, the triisopropanolamine and the water reducing agent are used as main raw materials, so that the strength of mortar and concrete prepared by the nano Monte soil modified bottom ash building cementing material meets the construction requirement, and meanwhile, the mortar and the concrete have better durability and can better meet the use requirement; moreover, the waste incineration bottom ash is used for replacing part of cement, so that the pollution problem of the waste incineration bottom ash is effectively solved, the cost of the building cementing material is greatly reduced, and the double effects of solid waste recycling, energy conservation and environmental protection are achieved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The invention provides a nano Monte soil modified bottom ash building gel material which comprises the following components in parts by weight:
preferably, the nano Monte soil modified bottom ash building gel material comprises the following components in parts by mass:
the waste incineration bottom ash (called bottom ash for short) is one of the solid wastes of waste incineration power generation, and the chemical compositions of the bottom ash, the fly ash and the cement are similar from the comparison in table 1. A large number of researches find that the bottom ash is similar to the fly ash, has potential volcanic ash characteristics, and releases active SiO through certain chemical means, such as alkali activation, damage to a vitreous body on the outer layer of the bottom ash and the like2、Al2O3Simultaneously depolymerizing and disintegrating the network aggregate into [ SiO ]4]、[AlO4]And the like, and finally react to form a hydraulic gelled substance such as C-S-H, C-A-H and the like.
TABLE 1 comparison of chemical composition of refuse incineration bottom ash with No. 325 cement and fly ash
According to the invention, the waste incineration bottom ash is activated by chemical substances such as sodium hydroxide and sodium phosphate, and the activated bottom ash microstructure, hydration products, components of a small-pore solution and the like are regulated and controlled by using the nano Monte soil, so that the nano Monte soil modified bottom ash building cementing material, mortar and concrete are prepared, and the recycling comprehensive utilization of the bottom ash is realized.
Wherein, the alpha-olefin sodium sulfonate (AOS) is a surfactant, has a certain wrapping effect on carbon in the bottom ash of the waste incineration, and can effectively inhibit the influence of the carbon on the activity of the bottom ash of the waste incineration.
The waste incineration bottom ash is one of the solid wastes of waste incineration power generation, which is generally inactive, and in this embodiment, the waste incineration bottom ash is ground to a particle size of less than 0.07mm, so that the waste incineration bottom ash is active, and preferably, the waste incineration bottom ash is ground to a particle size of 0.02-0.07 mm by using a ball mill. Therefore, the smaller particle size is also beneficial to the uniform dispersion of the waste incineration bottom ash in the processing process, and meanwhile, the influence on the performance of the prepared cementing material due to the overlarge particle size of the waste incineration bottom ash can be avoided. Of course, in other embodiments, the grinding of the waste incineration bottom ash can be realized by adopting a grinding means which is conventional in the art.
The water reducing agent is preferably a polycarboxylic acid high-performance water reducing agent. The polycarboxylic acid high-performance water reducing agent is prepared by graft copolymerization of a plurality of macromolecular organic compounds taking polycarboxylate as a main body, has extremely strong water reducing performance, belongs to the leading environment-friendly concrete admixture in the world, and is widely applied to concrete construction of main structures of water conservancy, electric power, ports, railways, bridges, highways, airports, military engineering and various industrial and civil buildings.
The invention further provides a preparation method of the nano Monte soil modified bottom ash building gel material, which comprises the following steps:
step S10, dissolving nano-montmorillonite and alpha-olefin sodium sulfonate in 2/3 mixed water to form a first solution;
and (2) taking the mixing water accounting for two thirds of the total mass of the mixing water, adding the nano-montmorillonite and the alpha-olefin sodium sulfonate into the mixing water, and stirring until the nano-montmorillonite and the alpha-olefin sodium sulfonate are fully dissolved to form a first solution.
Step S20, dissolving triisopropanolamine and a water reducing agent in the remaining 1/3 mixed water to form a second solution;
and taking the remaining one third of the mixing water, adding triisopropanolamine and a water reducing agent into the mixing water, and stirring until the triisopropanolamine and the water reducing agent are fully dissolved to form a second solution.
Step S30, mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate into powder through dry mixing, then adding a second solution into the powder, stirring for the first time, and adding 425 at the same time#And stirring the cement and the first solution for the second time to obtain the nano Monte soil modified bottom ash building gel material.
The method comprises the steps of firstly, dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate for 5-10 min to obtain mixed powder, then gradually adding the second solution prepared in the step S20 into the mixed powder, continuously stirring for a period of time, and then adding 425#And (5) adding cement into the first solution prepared in the step (S10), and quickly stirring for a period of time to obtain the nano Monte soil modified bottom ash building cementing material.
In this embodiment, step S30 may be specifically performed as follows: dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate in a forced mixer for 5-10 min to form powder, adding the second solution into the powder, stirring at the rotating speed of 135-145 r/min for 5-10 min, and simultaneously adding 425#And stirring the cement and the first solution at the rotating speed of 280-290 r/min for 8-12 min to obtain the nano Monte soil modified bottom ash building cementing material, and the method has the characteristics of simplicity, strong operability, convenience in construction and easiness in popularization and use. Of course, in other embodimentsStep S30 may be performed by using other types of stirring nodes, or by using other stirring methods conventional in the art.
The nano Monte soil modified bottom ash building gel material provided by the invention at least has the following advantages: (1) incineration of bottom ash with garbage 425#The cement, the sodium hydroxide, the alpha-olefin sodium sulfonate, the sodium phosphate, the nano Monte soil, the triisopropanolamine and the water reducing agent are used as main raw materials, so that the strength of mortar and concrete prepared by the nano Monte soil modified bottom ash building cementing material meets the construction requirement, and meanwhile, the mortar and the concrete have better durability and can better meet the use requirement; (2) the waste incineration bottom ash is used for replacing part of cement, the waste incineration bottom ash is changed into valuable, the pollution problem of the waste incineration bottom ash is effectively solved, the pollution problem caused by cement production is improved due to the fact that the using amount of the cement is reduced, the cost of the building cementing material is greatly reduced, and the dual effects of solid waste recycling, energy conservation and environmental protection are achieved.
The invention also provides a nano Monte soil modified bottom ash building mortar which comprises a nano Monte soil modified bottom ash building cementing material and sand, wherein the mass of the sand is 1.5-3.5 times that of the nano Monte soil modified bottom ash building cementing material; the nano Monte soil modified bottom ash building gel material is the nano Monte soil modified bottom ash building gel material.
The nano Monte soil modified bottom ash building mortar can be prepared according to a preparation method of building mortar in the field, for example, the nano Monte soil modified bottom ash building cementing material and sand are put into a mortar stirrer and stirred until the nano Monte soil modified bottom ash building cementing material and the sand are uniformly mixed. Wherein the grain diameter of the sand is preferably 0.3-4.0 mm.
The invention further provides the nano-Monte soil modified bottom ash building concrete, which comprises the nano-Monte soil modified bottom ash building cementing material, sand and stones, wherein the mass of the sand and the stones is 0.8-2 times and 2-4 times of that of the nano-Monte soil modified bottom ash building cementing material; the nano Monte soil modified bottom ash building gel material is the nano Monte soil modified bottom ash building gel material.
The nano Monte soil modified bottom ash building concrete can be prepared according to the conventional preparation method of building concrete in the field, for example, the nano Monte soil modified bottom ash building cementing material, sand and stones are put into a concrete mixer and stirred until being uniformly mixed. The particle size of the sand is preferably 0.3-4.0 mm; and/or the particle size of the stones is preferably 5-35 mm.
The technical solutions of the present invention are further described in detail with reference to the following specific examples, which should be understood as merely illustrative and not limitative.
Example 1 preparation of a Nano Monte soil modified bottom Ash cementitious Material for construction
(1) Preparing raw materials: 1500Kg of waste incineration bottom ash and 425 Kg of waste incineration bottom ash are weighed correspondingly#1500Kg of cement, 30Kg of sodium hydroxide, 2Kg of alpha-olefin sodium sulfonate, 0.6Kg of sodium phosphate, 60Kg of nano-montmorillonite, 30Kg of triisopropanolamine, 30Kg of TJ-1 series polycarboxylic acid high-performance water reducing agent and 1050Kg of mixing water for later use.
(2) Preparing a cementing material:
adding the nano monte soil and the alpha-olefin sodium sulfonate into 700Kg of mixing water, and stirring until the nano monte soil and the alpha-olefin sodium sulfonate are fully dissolved to form a first solution;
adding triisopropanolamine and a water reducing agent into 350Kg of mixed water, and stirring until the triisopropanolamine and the water reducing agent are fully dissolved to form a second solution;
dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate in a forced mixer for 5min, then gradually adding the second solution into the mixer, stirring at the rotating speed of 140r/min for 10min, and then simultaneously adding 425 into the mixer#And stirring the cement and the first solution at the rotating speed of 285r/min for 10min to prepare the nano Monte soil modified bottom ash building cementing material.
Example 2 preparation of a Nano Monte soil modified bottom Ash cementitious Material for construction
(1) Preparing raw materials: 2000Kg of waste incineration bottom ash and 425 Kg of waste incineration bottom ash are weighed correspondingly#1500Kg of cement, 60Kg of sodium hydroxide, 3Kg of alpha-olefin sodium sulfonate, 0.8Kg of sodium phosphate, 80Kg of nano-montmorillonite, 50Kg of triisopropanolamine, 40Kg of TJ-1 series polycarboxylic acid high-performance water reducing agent and 1350Kg of mixing water for later use.
(2) Preparing a cementing material:
adding nano Monte and alpha-olefin sodium sulfonate into 900Kg of mixing water, and stirring until the nano Monte and the alpha-olefin sodium sulfonate are fully dissolved to form a first solution;
adding triisopropanolamine and a water reducing agent into 450Kg of mixed water, and stirring until the triisopropanolamine and the water reducing agent are fully dissolved to form a second solution;
dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate in a forced mixer for 8min, then gradually adding the second solution into the mixer, stirring for 8min at the rotating speed of 135r/min, and then simultaneously adding 425 into the mixer#And stirring the cement and the first solution for 8min at the rotating speed of 280r/min to prepare the nano Monte soil modified bottom ash building cementing material.
Example 3 preparation of a Nano Monte soil modified bottom Ash cementitious Material for construction
(1) Preparing raw materials: 2000Kg of waste incineration bottom ash and 425 Kg of waste incineration bottom ash are weighed correspondingly#2500Kg of cement, 60Kg of sodium hydroxide, 3Kg of sodium alpha-olefin sulfonate, 0.8Kg of sodium phosphate, 100Kg of nano-montmorillonite, 50Kg of triisopropanolamine, 45Kg of TJ-1 series polycarboxylic acid high-performance water reducer and 1650Kg of mixing water for later use.
(2) Preparing a cementing material:
adding nano Monte and alpha-olefin sodium sulfonate into 1100Kg of mixing water, and stirring until the nano Monte and the alpha-olefin sodium sulfonate are fully dissolved to form a first solution;
adding triisopropanolamine and a water reducing agent into 550Kg of mixed water, and stirring until the triisopropanolamine and the water reducing agent are fully dissolved to form a second solution;
dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate in a forced mixer for 10min, then gradually adding the second solution into the mixer, stirring at the rotating speed of 145r/min for 10min, and then simultaneously adding 425 into the mixer#Cement andand stirring the solution for 12min at the rotating speed of 290r/min to prepare the nano Monte soil modified bottom ash building cementing material.
Example 4 preparation of a Nano Monte soil modified bottom Ash cementitious Material for construction
(1) Preparing raw materials: 1500Kg of waste incineration bottom ash and 425 Kg of waste incineration bottom ash are weighed correspondingly#1800Kg of cement, 45Kg of sodium hydroxide, 2Kg of alpha-olefin sodium sulfonate, 0.6Kg of sodium phosphate, 75Kg of nano-montmorillonite, 40Kg of triisopropanolamine, 40Kg of TJ-1 series polycarboxylic acid high-performance water reducing agent and 1200Kg of mixing water for later use.
(2) Preparing a cementing material:
adding nano Monte and alpha-olefin sodium sulfonate into 800Kg of mixing water, and stirring until the nano Monte and the alpha-olefin sodium sulfonate are fully dissolved to form a first solution;
adding triisopropanolamine and a water reducing agent into 400Kg of mixed water, and stirring until the triisopropanolamine and the water reducing agent are fully dissolved to form a second solution;
dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate in a forced mixer for 10min, then gradually adding the second solution into the mixer, stirring at the rotating speed of 140r/min for 10min, and then simultaneously adding 425 into the mixer#And stirring the cement and the first solution at the rotating speed of 285r/min for 10min to prepare the nano Monte soil modified bottom ash building cementing material.
Example 5 preparation of Nano Monte soil modified bottom Ash mortar for construction
1000Kg of the nano Monte soil modified bottom ash building cementitious material prepared by the step of example 1 and 3000Kg of sand are sequentially added into a stirrer to be stirred until being uniformly mixed, so as to prepare the nano Monte soil modified bottom ash building mortar, wherein the grain size of the sand is 0.4-3.0 mm.
Example 6 preparation of Nano Monte soil modified bottom Ash mortar for construction
1000Kg of the nano Monte soil modified bottom ash building cementitious material prepared in the step of example 1 and 2500Kg of sand are sequentially added into a stirrer to be stirred until being uniformly mixed, so as to prepare the nano Monte soil modified bottom ash building mortar, wherein the grain size of the sand is 1.0-3.5 mm.
Example 7 preparation of concrete for construction of Nano Monte soil modified bottom Ash
1000Kg of the nano Monte soil modified bottom ash building cementitious material prepared in the step of example 1, 1000Kg of sand and 3000Kg of pebbles are sequentially added into a stirrer to be stirred until being uniformly mixed, so that the nano Monte soil modified bottom ash building mortar is prepared, wherein the grain diameter of the sand is 0.6-3.0 mm, and the grain diameter of the pebbles is 10-20 mm.
Example 8 preparation of concrete for construction of Nano Monte soil modified bottom Ash
1000Kg of the nano Monte soil modified bottom ash building cementitious material prepared in the step of example 1, 2000Kg of sand and 3000Kg of pebbles are sequentially added into a stirrer to be stirred until being uniformly mixed, so that the nano Monte soil modified bottom ash building concrete is prepared, wherein the grain diameter of the sand is 0.8-4.0 mm, and the grain diameter of the pebbles is 5-30 mm.
Example 9 preparation of concrete for construction of Nano Monte soil modified bottom Ash
1000Kg of the nano Monte soil modified bottom ash building cementitious material prepared in the step of example 1, 2500Kg of sand and 2500Kg of pebbles are sequentially added into a stirrer to be stirred until the materials are uniformly mixed, so that the nano Monte soil modified bottom ash building concrete is prepared, wherein the grain diameter of the sand is 1.0-4.0 mm, and the grain diameter of the pebbles is 20-35 mm.
Comparative example 1
A construction cementitious material was prepared according to the procedure of example 1, except that the nano-montmorillonite in the raw material was replaced with equal mass of blending water.
Comparative example 2
An architectural mortar was prepared according to the procedure of example 5, except that the architectural cementitious material prepared in comparative example 1 was selected for preparation.
Comparative example 3
Construction concrete was prepared by following the procedure of example 7, except that the construction cementitious material prepared in comparative example 1 was selected for preparation.
The mortar or concrete prepared in examples 5 to 9 was subjected to the following tests for the relevant properties according to the national standard test method for building materials, the test method and results being as follows:
(1) the mortars prepared in examples 5 and 6 and comparative example 2 were subjected to a compressive strength test according to the test method specified in "test method for basic properties of building mortar" standard of JGJ/T70-2009, and the test results are shown in table 2 below.
TABLE 2 compression Strength test results (MPa) of mortars prepared in examples 5 and 6 and comparative example 2
As is clear from the measurement results in Table 2, the 28-day compressive strengths of the mortars prepared in examples 5 and 6 were 15.4MPa and 16.7MPa, respectively, and were much higher than the 28-day compressive strength of the mortar prepared in the comparative example by 6.5MPa, and the mortar could satisfy the use requirements of buildings and structures with different requirements.
(2) The concrete prepared in examples 7 to 9 and comparative example 3 was subjected to a compressive strength test according to the test method specified in the Standard for evaluation of concrete Strength test (GB/T50107-2010), and the test results are shown in Table 3 below.
TABLE 2 compression Strength test results (MPa) of the concretes prepared in examples 7 to 9 and comparative example 3
| Test piece | 7d | 14d | 28d | 56d |
| Comparative example 3 | 10.8 | 11.4 | 12.6 | 13.7 |
| Example 7 | 22.3 | 27.6 | 38.8 | 39.2 |
| Example 8 | 24.1 | 28.9 | 40.2 | 41.5 |
| Example 9 | 23.6 | 27.5 | 39.8 | 40.1 |
As can be seen from the test results in Table 3, the concrete prepared in examples 7 to 9 has a 28-day compressive strength of 38.8MPa, 40.2MPa and 39.8MPa, respectively, which is much higher than the 28-day compressive strength of 12.6MPa of the concrete prepared in comparative example 3, and can meet the use requirements of buildings and structures with different requirements.
From the test data, the material performance of the nano Monte soil modified bottom ash building cementing material, mortar and concrete provided by the invention is better, and the cementing material can completely meet the use requirements, and the compressive strength of the material in 28 days is greatly reduced because necessary nano Monte soil components are not added according to the requirements of the invention in the comparative example, so that the material can not better meet the use requirements.
It should be noted that the nano monte soil is an important additive component of the building cementitious material provided by the invention, the bottom ash starts to hydrate after being activated by alkali, and the nano monte soil can effectively polymerize the shape and structure of a hydration product, so that the compactness is improved, and the performance of the finally obtained nano monte soil modified bottom ash cementitious material is ensured.
In addition, the concrete is prepared from cement in the proportion of C15 plain concrete per cubic meter: sand: stone: water 1: 2.77: 4.75: 0.67, the required cement amount is about 280Kg, 425 in Wuhan City#The price of the cement is about 500 yuan/ton. At present, bottom ash can hardly be used, and is generally disposed by landfill. Roughly estimated, the invention can prepare 1 cubic C15 concrete, and can save about 230 yuan if bottom ash is used. The invention consumes a large amount of bottom ash, has considerable economic benefit and obvious environmental protection benefit.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The nano Monte soil modified bottom ash building gel material is characterized by comprising the following components in parts by mass:
wherein the waste incineration bottom ash is ground by a ball mill until the particle size is 0.02-0.07 mm.
2. The nano Monte soil modified bottom ash building gel material as claimed in claim 1, which comprises the following components in parts by mass:
3. the nano-montmorillonite soil modified bottom ash building cementitious material of claim 1 or 2, wherein the water reducing agent is a polycarboxylic acid high performance water reducing agent.
4. A method for preparing the nano monte soil modified bottom ash building gel material as claimed in any one of claims 1 to 3, comprising the steps of:
dissolving nano-montmorillonite and alpha-olefin sodium sulfonate in 2/3 mixing water to form a first solution;
dissolving triisopropanolamine and a water reducing agent in the remaining 1/3 mixed water to form a second solution;
mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate into powder through dry stirring, adding a second solution into the powder, stirring for the first time, and adding 425#And stirring the cement and the first solution for the second time to obtain the nano Monte soil modified bottom ash building gel material.
5. The method of claim 4, wherein the waste incineration bottom ash, the sodium hydroxide and the sodium phosphate are mixed by dry mixing to form a powder, and then the second solution is added to the powder to perform a first stirring, and then 425 is added simultaneously#Cement and the first solution are stirred for the second time to obtain the nano Monte soil modified bottom ash building gel material, and the method specifically comprises the following steps:
dry-mixing the waste incineration bottom ash, sodium hydroxide and sodium phosphate in a forced mixer for 5-10 min to form powder, adding the second solution into the powder, stirring at the rotating speed of 135-145 r/min for 5-10 min, and simultaneously adding 425#And stirring the cement and the first solution at the rotating speed of 280-290 r/min for 8-12 min to obtain the nano Monte soil modified bottom ash building gel material.
6. The nano Monte soil modified bottom ash building mortar is characterized by comprising a nano Monte soil modified bottom ash building cementing material and sand, wherein the mass of the sand is 1.5-3.5 times that of the nano Monte soil modified bottom ash building cementing material;
the nano Monte soil modified bottom ash building gel material is the nano Monte soil modified bottom ash building gel material as claimed in any one of claims 1 to 3.
7. The nano-montmorillonite soil modified bottom ash building mortar of claim 6, wherein the grain size of the sand is 0.3-4.0 mm.
8. The concrete for the nano Monte soil modified bottom ash building is characterized by comprising a nano Monte soil modified bottom ash building cementing material, sand and stones, wherein the mass of the sand and the stones is 0.8-2 times and 2-4 times of that of the nano Monte soil modified bottom ash building cementing material;
the nano Monte soil modified bottom ash building gel material is the nano Monte soil modified bottom ash building gel material as claimed in any one of claims 1 to 3.
9. The nano-Monte soil modified bottom ash building concrete according to claim 8, wherein the sand has a particle size of 0.3-4.0 mm; and/or the particle size of the stones is 5-35 mm.
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