CN104276772A - Preparation method of hydraulic cementing material - Google Patents
Preparation method of hydraulic cementing material Download PDFInfo
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- CN104276772A CN104276772A CN201410465490.2A CN201410465490A CN104276772A CN 104276772 A CN104276772 A CN 104276772A CN 201410465490 A CN201410465490 A CN 201410465490A CN 104276772 A CN104276772 A CN 104276772A
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- hydraulic cementing
- cement
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- cementing materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Abstract
The invention discloses a preparation method of hydraulic cementing material, belonging to the field of a cement-based material. The preparation method comprises the following step: commonly grinding the following raw materials in parts by weight: 35-40 parts of regenerative cement, 40-50 parts of water quenching slag, 6-8 parts of gypsum, 2-4 parts of modifiers and 5-10 parts of hydrated calcium melilite conversion agents, to obtain the hydraulic cementing material with specific surface area of 360m<2>/kg-400m<2>/kg, besides suitable cementing characteristic and early strength, the late strength of the hydraulic cementing material is stably increased, and the anti-carbonization property and waterproof property of clinker-free cement can be improved. For the hydraulic cementing material, the mortar breaking strength in 28 days is 8-10MPa, the compressive strength is greater than 45MPa, the mortar, concrete and products are endowed with excellent anti-penetrability performance, harmful ion erosion resistance performance and fire resistance performance, and the hydraulic cementing material is applicable to pavement of a roadbed, production of fireproof thermal-insulating building materials, residential smoke exhaust flues and dry-mixed mortar, and curing of heavy metal ions.
Description
Technical field
The present invention relates to a kind of preparation method of hydraulic cementing materials, belong to cement-based material field.
Background technology
In China, cement and concrete are the Two Mainstays industries of building field.Show according to Chinese architecture material federation and national statistics data, reach 24.1 hundred million tons at the annual cement output of China in 2013, concrete output reaches 21.96 billion cubic meters.Meanwhile, along with Urbanization in China accelerate, construction industry enters the high speed development stage, and a large amount of old building reaches working life, or due to other factors need remove.General concrete working life is 50 ~ 100 years, and China in the early days of foundation built up concrete works has progressed into the dismounting phase.According to incompletely statistics, in China's demolishing buildings in 2007 and construction process, create the discarded concrete that total amount reaches 1.5 hundred million tons, expect the year two thousand twenty by the discarded concrete of generation 2,000,000,000 tons.The building waste that discarded concrete causes has become the serious problem of building trade one, extremely urgent to the recycling of discarded concrete.
Concrete consumes as industry characteristics, simultaneously with serious environmental pollution with Nonrenewable resources (Wingdale, sand, stone) and Nonrenewable energy resources (coal, oil, Sweet natural gas).The big academician in Wuzhong just proposed Chinese cement concrete industry and urgently transforms before more than 10 years, accelerated to go on the sustainable development path of high-quality, low consumption, efficient and environmentally compatible, made this topmost building structural materials of cement concrete become green material.For cement, it is reported, the Wingdale reserves that China is tentatively verified are about 45,000,000,000 tons, and what can develop is about 25,000,000,000 tons, by current cement output, within 35 years, just there will be the problem of limestone resource exhaustion afterwards.And adopt clay ingredient cement baking, not only can destroy the soil that the mankind depend on for existence, and SiO in clay
2content is lower, is unsuitable for producing high gelation cement, and clay fusing point is high, and during production, heat consumption of clinker is higher.Within 2009, China's cement production consumption accounts for 6.6% of national total energy consumption.
In China, discarded concrete mainly does simple landfill disposal as building waste at present, and also have and use after discarded concrete fragmentation as roadbed material, overall utilising efficiency is low.Therefore, the high efficient energy sources regeneration how realizing discarded concrete becomes current hot issue.
Chinese patent CN201310110697.3 discloses one " preparation method of easy fired hydraulic cementing materials ", this gelling material has early strong, utilize waste in a large number, reduce production energy consumption, but early stage condensation is too fast, later strength is inadequate, and poor with admixture adaptability, is difficult to be widely used in Practical Project.
Chinese patent CN201110428161.7 discloses " a kind of ecological cementing material ", and this gelling material for raw material with solid waste such as building refuse brick powder and semi-dry desulphurization ash, utilizes the cooperative compensating effect of storeroom, turns waste into wealth.But the building refuse brick meal component in different material differs greatly, final product quality is difficult to unified regulation and control.
Chinese patent CN201010533024.5 discloses one " gelatinization material of phosphoaluminic salt system ", and this gelling material has early strong, the premium properties that resistivity against fire is good.But early stage condensation is too fast, and in practical application, operation easier is comparatively large, and cost is higher, limits industrialization promotion.
Summary of the invention
Goal of the invention: the object of the invention is to the performance deficiency for avoiding existence in the re-using of reuse water mud, and a kind of preparation method and application of hydraulic cementing materials are provided.
Technical scheme: the object of the invention is to prepare a kind of hydraulic cementing materials by following measure.
A preparation method for hydraulic cementing materials, the composition of described hydraulic cementing materials, according to parts by weight is:
Above-mentioned each component mix grinding is counted 360m to fineness with specific surface area
2/ kg ~ 400m
2/ kg, the hydraulic cementing materials of acquisition.
During use, suitable water-cement ratio is 0.30 ~ 0.50, can mix all kinds of chemical admixture.
Described gypsum is natural dihydrate gypsum, anhydrite, chemical gypsum and one or both and two or more common use under 300 DEG C ~ 800 DEG C conditions in calcinate.
Described recycled cement is by waste residue after thick to wastewater slurry solid slag, cement board waste residue, foamed concrete waste residue, discarded concrete regeneration, fine aggregate, form through high-temperature calcination activation, calcining temperature is 600 DEG C ~ 1000 DEG C, preferably 800 DEG C ~ 900 DEG C.
Described properties-correcting agent is the one in potassium primary phosphate, SODIUM PHOSPHATE, MONOBASIC, primary ammonium phosphate.
Described hydratable calcium melilith transforming agent is metakaolin, one in the ripe powder of alunite or both jointly use.
Beneficial effect
1, energy-saving and emission-reduction, low-carbon environment-friendly: the reuse water mud used in the present invention is that recycling obtains from wastewater slurry solid slag, cement board waste residue, foamed concrete waste residue, waste concrete, while Appropriate application construction waste, decrease the consumption of the Nonrenewable resources such as Resurvey cement producting material clay, Wingdale; And require no calcining in technical process, change the production technique that silicate cement two grinds a burning, energy consumption only needs 1/1 to four/3rd of silicate cement, decreases the discharge of GHG carbon dioxide and other obnoxious flavour in production process.Save energy, reduces production cost, has good environmental benefit and economic benefit.
2, there is excellent fireproof heat insulating performance: the hydratable calcium melilith transforming agent in gelling material of the present invention supplements the alumina content in system, in hydrated product except aquation gehlenite, also have C-S-H gel, AFm, ettringite etc.When high temperature, between each component of this gelling material, can solid state reaction be there is, generate ceramic body, also can keep higher-strength, so have excellent fire performance, can use as fire-proof construction material.
3, improve the resisting erosion of sulfate ability of cement: in hydratable calcium melilith transforming agent, metakaolin is that a kind of molecular arrangement is irregular, present thermodynamics and to be situated between the artificial pozzolanic material of high reactivity of steady state.The ripe powder of alunite can supplement aluminum oxide required for subsequent reactions and alkaline environment.After joining reuse water mud, the CH that hydratable calcium melilith transforming agent and hydrated reaction of cement are produced reacts, and generates hydratable calcium melilith (C
2aSH
8), hydratable calcium melilith inner unlike hydrolysis product of cement the same as Van der Waals key and hydrogen bond, but based on covalent linkage and ionic linkage, in conjunction with more tight, concrete is made to have higher intensity, improve the degree of compactness in system, substantially increase Sulfate Resistance of Concrete energy.
4, production technique simple possible: production technique feasibility provided by the invention is strong, simple to operation, is easy to suitability for industrialized production and promotes and implement, be with a wide range of applications.
With the hydraulic cementing materials that the present invention obtains, except there is suitable congealing property and early strength, also due to C
2the hydration of S and the generation of hydratable calcium melilith, make stable long-term strength increase, and improves anti-carbonation properties and the water resistance of clinker-free cement.This hydraulic cementing materials, 28 days glue sand folding strengths are 8 ~ 10MPa, ultimate compression strength is greater than 45MPa, the excellent anti-permeability performance of mortar, concrete and goods, anti-harmful ion erosion performance and fire performance can be given, be applicable to making roadbed, produce fireproof heat insulating building materials, residence discharge flue, dry-mix and curing heavy metal ion.
Embodiment:
This invention implements like this: by recycled cement, water-granulated slag, calcining anhydrite product, potassium primary phosphate, metakaolin, fully mix levigate in certainweight ratio, can prepare the hydraulic cementing materials of various label.
Embodiment 1:
1. above-mentioned each component weight share proportioning is mixed mutually, wherein:
Recycled cement 36 parts, water-granulated slag 49 parts, calcining anhydrite product 6 parts, potassium primary phosphate 4 parts, metakaolin 5 parts.
2. be the particle that particle diameter is less than 2.5mm by above-mentioned mixture pulverizer meal.
3. again with atomizer mill by further for particle grinding, make its fineness be 370m
2/ kg.
Embodiment 2:
1. above-mentioned each component weight share proportioning is mixed mutually, wherein:
Recycled cement 35 parts, water-granulated slag 50 parts, calcining anhydrite product 6 parts, SODIUM PHOSPHATE, MONOBASIC 3 parts, 6 parts, the ripe powder of alunite.
2. be the particle that particle diameter is less than 3mm by above-mentioned mixture pulverizer meal.
3. again with atomizer mill by further for particle grinding, make its fineness be 380m
2/ kg.
Embodiment 3:
1. above-mentioned each component weight share proportioning is mixed mutually, wherein:
Recycled cement 37 parts, water-granulated slag 46 parts, calcining anhydrite product 8 parts, primary ammonium phosphate 2 parts, 7 parts, the ripe powder of alunite.
2. be the particle that particle diameter is less than 3.5mm by above-mentioned mixture pulverizer meal.
3. again with atomizer mill by further for particle grinding, make its fineness be 390m
2/ kg.
Embodiment 4:
1. above-mentioned each component weight share proportioning is mixed mutually, wherein:
Recycled cement 39 parts, water-granulated slag 48 parts, calcining anhydrite product 6 parts, potassium primary phosphate 2 parts, metakaolin 5 parts.
2. be the particle that particle diameter is less than 4.0mm by above-mentioned mixture pulverizer meal.
3. again with atomizer mill by further for particle grinding, make its fineness be 400m
2/ kg.
Embodiment 5:
1. above-mentioned each component weight share proportioning is mixed mutually, wherein:
Recycled cement 38 parts, water-granulated slag 47 parts, calcining anhydrite product 7 parts, SODIUM PHOSPHATE, MONOBASIC 2 parts, metakaolin and each 3 parts of the ripe powder of alunite.
2. be the particle that particle diameter is less than 4.0mm by above-mentioned mixture pulverizer meal.
3. again with atomizer mill by further for particle grinding, make its fineness be 400m
2/ kg.
The above-mentioned hydraulic cementing materials according to process for processing of the present invention is compared with conch board P.O42.5 ordinary Portland cement, and its performance index are as shown in table 1 with reference to standard GB/T 175-2007:
Table 1 the present invention and the contrast of conch board P.O42.5 cement performance parameter
As can be seen from the above table, its technical feature of hydraulic cementing materials of the present invention exceedes ordinary Portland cement, has broad application prospects.
Claims (5)
1. a preparation method for hydraulic cementing materials, is characterized in that: the composition of described hydraulic cementing materials, according to parts by weight is:
Recycled cement 35 ~ 40 parts
Water-granulated slag 40 ~ 50 parts
6 ~ 8 parts, gypsum
Properties-correcting agent 2 ~ 4 parts
Hydratable calcium melilith transforming agent 5 ~ 10 parts
Above-mentioned each component mix grinding is counted 360m2/kg ~ 400m2/kg to fineness with specific surface area, the hydraulic cementing materials of acquisition;
During use, suitable water-cement ratio is 0.30 ~ 0.50, can mix all kinds of chemical admixture.
2. the preparation method of hydraulic cementing materials as claimed in claim 1, it is characterized in that, described gypsum is natural dihydrate gypsum, anhydrite, chemical gypsum and one or both and two or more common use under 300 DEG C ~ 800 DEG C conditions in calcinate.
3. the preparation method of hydraulic cementing materials as claimed in claim 1, it is characterized in that, described recycled cement is by waste residue after thick to wastewater slurry solid slag, cement board waste residue, foamed concrete waste residue, discarded concrete regeneration, fine aggregate, form through high-temperature calcination activation, calcining temperature is 600 DEG C ~ 1000 DEG C, preferably 800 DEG C ~ 900 DEG C.
4. the preparation method of hydraulic cementing materials as claimed in claim 1, it is characterized in that, described properties-correcting agent is the one in potassium primary phosphate, SODIUM PHOSPHATE, MONOBASIC, primary ammonium phosphate.
5. the preparation method of hydraulic cementing materials as claimed in claim 1, it is characterized in that, described hydratable calcium melilith transforming agent is metakaolin, one in the ripe powder of alunite or both jointly use.
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| CN201410465490.2A CN104276772B (en) | 2014-09-12 | 2014-09-12 | A kind of preparation method of hydraulic cementing materials |
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| CN201410465490.2A CN104276772B (en) | 2014-09-12 | 2014-09-12 | A kind of preparation method of hydraulic cementing materials |
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| CN104276772A true CN104276772A (en) | 2015-01-14 |
| CN104276772B CN104276772B (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904847A (en) * | 2017-04-12 | 2017-06-30 | 中国矿业大学 | A kind of method that utilization discarded concrete Behavior of Hardened Cement Paste mutually prepares low fever's complex cement |
| CN113354313A (en) * | 2021-07-05 | 2021-09-07 | 常熟理工学院 | Method for preparing non-fired cement by using concrete waste residues |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560413A (en) * | 1983-05-30 | 1985-12-24 | Sumitomo Cement Co., Ltd. | Gamma-dicalcium silicate-containing cement composition |
| CN1381417A (en) * | 2001-04-23 | 2002-11-27 | 孙立朝 | Impervious composite silicate cement |
| CN1673169A (en) * | 2005-03-15 | 2005-09-28 | 华南理工大学 | Process of preparing mineral bonding material and its composite material with phosphate and aluminium-silicon material |
| CN102617059A (en) * | 2012-03-23 | 2012-08-01 | 深圳大学 | Phosphate base cementing agent |
| CN103319103A (en) * | 2013-06-09 | 2013-09-25 | 河海大学 | Regenerative hardened cement mortar gelling material and preparation method thereof |
-
2014
- 2014-09-12 CN CN201410465490.2A patent/CN104276772B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560413A (en) * | 1983-05-30 | 1985-12-24 | Sumitomo Cement Co., Ltd. | Gamma-dicalcium silicate-containing cement composition |
| CN1381417A (en) * | 2001-04-23 | 2002-11-27 | 孙立朝 | Impervious composite silicate cement |
| CN1673169A (en) * | 2005-03-15 | 2005-09-28 | 华南理工大学 | Process of preparing mineral bonding material and its composite material with phosphate and aluminium-silicon material |
| CN102617059A (en) * | 2012-03-23 | 2012-08-01 | 深圳大学 | Phosphate base cementing agent |
| CN103319103A (en) * | 2013-06-09 | 2013-09-25 | 河海大学 | Regenerative hardened cement mortar gelling material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904847A (en) * | 2017-04-12 | 2017-06-30 | 中国矿业大学 | A kind of method that utilization discarded concrete Behavior of Hardened Cement Paste mutually prepares low fever's complex cement |
| CN113354313A (en) * | 2021-07-05 | 2021-09-07 | 常熟理工学院 | Method for preparing non-fired cement by using concrete waste residues |
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|---|---|
| CN104276772B (en) | 2016-08-17 |
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