CN110171938A - Concrete waste grout corrosion inhibiter and application and the pumping aid agent and application prepared with the corrosion inhibiter - Google Patents
Concrete waste grout corrosion inhibiter and application and the pumping aid agent and application prepared with the corrosion inhibiter Download PDFInfo
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- CN110171938A CN110171938A CN201910383959.0A CN201910383959A CN110171938A CN 110171938 A CN110171938 A CN 110171938A CN 201910383959 A CN201910383959 A CN 201910383959A CN 110171938 A CN110171938 A CN 110171938A
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- concrete waste
- corrosion inhibiter
- aid agent
- grout
- pumping aid
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The present invention relates to the technical fields that concrete waste grout recycles, and in particular to concrete waste grout corrosion inhibiter and application are mixed by the ingredient for including following parts by weight: 5-20 parts of glucose, 20-40 parts and water 45-75 parts of citric acid；Also disclose the pumping aid agent and application prepared using the corrosion inhibiter and concrete waste grout；Pumping aid agent is prepared using simple corrosion inhibiter cooperation concrete waste grout is formed in the present invention, realizes the recycling and reusing of concrete waste grout, has saved resource, reduces waste pulp discharge amount, environmental protection；Pumping aid agent is formed after the waste pulp that concrete mixing plant generates are processed, mortar is pumped instead of traditional profit, has saved cost.
Description
Technical field
The present invention relates to the technical fields that concrete waste grout recycles, and in particular to concrete waste grout corrosion inhibiter and application
And the pumping aid agent and application prepared with the corrosion inhibiter.
Background technique
Concrete mixing plant is the place of centralized production concrete, needs to utilize concrete mixing tank car after concrete synthesis
Transport to construction site uses.But a large amount of concrete waste can be generated after mixing plant process and tank car transport
Slurry, leads to the waste from stacking Cheng Shan of concrete mixing plant.Show that every cube of concrete of production will generate according to data analysis result
The concrete waste grout of 20-40kg.
Currently, the processing method that the waste pulp generated to concrete mixing plant and its stirring transport tank vehicle are taken are as follows: pass through sand
Stone separator is separated, and sandstone recycles after separation, is toppled over outside transport to mixing plant after waste pulp precipitating, this processing side
Some materials in waste pulp are directly toppled over waste by formula, and cost is big, and are existed and toppled over because environmental requirement cannot arbitrarily topple over
The problem of place difficulty is looked for；Either waste pulp are carried out dehydrating, form the lower solid block of water content, are then transported to stirring
It mixes and topples over outside station, such mode equally exists waste of resource, and there are dumping ground difficulties to look for due to environmental requirement cannot arbitrarily topple over
The problem of.
In addition, pressurizeing to hopper will after the concrete of stirring transport tank car is in the hopper of discharging to concrete mixer
Concrete is squeezed into pump line, is delivered to and is poured a little.Before squeezing into concrete into pump line, need that pumping aid agent is first added into pump line
Soak pipeline.In the prior art, pumping aid agent is usually directly bought using pump line wetting agent made of various raw material particular formulations
It is voluntarily formulated with or with plurality of raw materials, higher cost.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of concrete waste grout inhibition
Agent, composition is simple, and low manufacture cost can be handled concrete waste grout, realizes refuse reclamation, environmental protection and saving.
The first purpose of this invention is achieved through the following technical solutions:
A kind of concrete waste grout corrosion inhibiter is mixed by the ingredient for including following parts by weight: 5-20 parts of glucose, citric acid
40 parts and water 45-75 parts of 20-.
By using above-mentioned technical proposal, glucose (glucose), organic compound, molecular formula C6H12O6.Citric acid
(Citric Acid), a kind of important organic acid also known as citric acid, clear crystal, Chang Hanyi molecular crystalline water is odorless, has very
Strong tart flavour, it is soluble easily in water.It is mixed glucose, citric acid and water to form corrosion inhibiter, can be added in concrete waste grout
Waste pulp are turned waste into wealth, realize refuse reclamation, have saved concrete waste grout resource, and can discharge to avoid waste pulp and cause dirt
Dye.
Preferably, it is by including that the ingredient of following parts by weight mixes: 10-15 parts of glucose, 25-35 parts of citric acid
With 55-65 parts of water.
By using above-mentioned technical proposal, optimize the constituent content of corrosion inhibiter, improves it and processing of concrete waste grout is imitated
Fruit.
A second object of the present invention is to provide a kind of above-mentioned concrete waste grout corrosion inhibiter to be prepared using concrete waste grout
Application in pumping aid agent, concrete waste grout is recycled, economical environment-protective.
Third object of the present invention is to provide a kind of pumping aid agents prepared with above-mentioned concrete waste grout corrosion inhibiter, by coagulation
Native waste pulp recycling and reusing, economical environment-protective.
Third object of the present invention is achieved through the following technical solutions:
A kind of pumping aid agent comprising the ingredient of following parts by weight: concrete waste grout and account for concrete waste grout weight 2%-10%'s
Concrete waste grout corrosion inhibiter.
By using above-mentioned technical proposal, is matched with concrete waste grout and corrosion inhibiter, obtain pumping aid agent, it can by coagulation
Native waste pulp are applied in the pump line wetting of pump truck after carrying out waste recovery, economize on resources, environment friendly and pollution-free；Coagulation can be reduced again
The operation cost of soil mixing station.
Preferably, the concrete waste grout corrosion inhibiter accounts for the 4%-8% of concrete waste grout weight.
Preferably, the concrete waste grout corrosion inhibiter accounts for the 5%-7% of concrete waste grout weight.
By using above-mentioned technical proposal, optimizes component proportion, improve the comprehensive performance of pumping aid agent.
Preferably, the solid content in the concrete waste grout is 45wt%-75wt%.
Preferably, the solid content in the concrete waste grout is 50wt%-70wt%.
Preferably, the solid content in the concrete waste grout is 55wt%-65wt%.
By using above-mentioned technical proposal, the corrosion inhibiter in the present invention is made to can be adapted for the concrete waste of different solid contents
Slurry, strong applicability, application range are wider.
Fourth object of the present invention is to provide a kind of application of above-mentioned pumping aid agent in concrete mixer profit pump, by coagulation
At pumping aid agent, the pump line for pump truck is soaked for native waste pulp processing post-processing, can save the cost of profit pump.
In conclusion the invention has the following beneficial effects:
(1) corrosion inhibiter composition is simple, at low cost；Excessive chemical component is not introduced, is soaked to after waste pulp processing as pumping aid agent
Pump line will not impact the concrete performance transmitted in pump line, highly-safe；
(2) corrosion inhibiter deploys concrete waste grout, forms pumping aid agent, realizes to the refuse reclamation of concrete waste grout, that is, saves
Resource, and overcome problem of environmental pollution caused by waste pulp discharge；
(3) concrete waste grout generated in mixing plant production process and in tank car is handled, pumping aid agent is formed, as mixing plant
Profit pump mortar, 1.2 ten thousand cost can be saved daily.
Specific embodiment
The contents of the present invention are further detailed combined with specific embodiments below.
Glucose is selected from the sharp Chemical Co., Ltd. in Jinan poly- hundred million, industrial glucose in the present invention；Citric acid is selected from Jinan
Poly- hundred million sharp Chemical Co., Ltd.s, content are 99.9 (%), and No. CAS is 77-92-9.Concrete waste grout in the present invention is from mixed
The waste pulp generated in residual fraction and concrete mixing plant production process in solidifying soil transportation tank car, main component is still
The cementitious material of incomplete aquation and the mixture of fine particle.
Embodiment 1
A kind of concrete waste grout corrosion inhibiter is mixed: glucose 50kg, citric acid by the ingredient for including following parts by weight
200kg and water 450kg.
Embodiment 2
A kind of concrete waste grout corrosion inhibiter is mixed: glucose 100kg, citric acid by the ingredient for including following parts by weight
250kg and water 550kg.
Embodiment 3
A kind of concrete waste grout corrosion inhibiter is mixed: glucose 150kg, citric acid by the ingredient for including following parts by weight
350kg and water 650kg.
Embodiment 4
A kind of concrete waste grout corrosion inhibiter is mixed: glucose 120kg, citric acid by the ingredient for including following parts by weight
310kg and water 620kg.
Embodiment 5
A kind of concrete waste grout corrosion inhibiter is mixed: glucose 200kg, citric acid by the ingredient for including following parts by weight
400kg and water 750kg.
Embodiment 6
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 1 comprising the ingredient of following parts by weight: concrete
The concrete waste grout 100kg that waste pulp corrosion inhibiter 2kg and solid content are 45wt%；By the two be thoroughly mixed uniformly to get
To pumping aid agent.
Embodiment 7
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 2 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 2kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 8
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 3 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 2kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 9
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 4 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 2kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 10
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 5 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 2kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 11
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 4 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 4kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 12
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 4 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 5kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 13
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 4 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 7kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 14
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 4 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 8kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 15
A kind of pumping aid agent prepared by the concrete waste grout corrosion inhibiter with embodiment 4 comprising the ingredient of following parts by weight: concrete
Waste pulp corrosion inhibiter 10kg and solid content are 45wt% concrete waste grout 100kg；The two is thoroughly mixed uniformly to get arriving
Pumping aid agent.
Embodiment 16
The pumping aid agent of embodiment 16 and the difference of embodiment 12 are: the solid content of concrete waste grout be 50wt%, remaining with
Embodiment 12 is consistent.
Embodiment 17
The pumping aid agent of embodiment 17 and the difference of embodiment 12 are: the solid content of concrete waste grout be 55wt%, remaining with
Embodiment 12 is consistent.
Embodiment 18
The pumping aid agent of embodiment 18 and the difference of embodiment 12 are: the solid content of concrete waste grout be 65wt%, remaining with
Embodiment 12 is consistent.
Embodiment 19
The pumping aid agent of embodiment 19 and the difference of embodiment 12 are: the solid content of concrete waste grout be 70wt%, remaining with
Embodiment 12 is consistent.
Embodiment 20
The pumping aid agent of embodiment 20 and the difference of embodiment 12 are: the solid content of concrete waste grout be 75wt%, remaining with
Embodiment 12 is consistent.
Embodiment 21
The pumping aid agent of embodiment 21 and the difference of embodiment 12 are: the solid content of concrete waste grout be 60wt%, remaining with
Embodiment 12 is consistent.
Blank example
Blank example and the pumping aid agent difference of embodiment 13 are: concrete waste grout corrosion inhibiter 0kg, remaining is consistent with embodiment 13.
Comparative example 1
The pumping aid agent difference of comparative example 1 and embodiment 13 is: concrete waste grout corrosion inhibiter 11kg, remaining and embodiment 13 1
It causes.
The pumping aid agent 300g of difference Example 13, blank example and comparative example 1, is put in volumetric flask and carries out follow-up observation,
And volumetric flask is placed in the interior that temperature is 25 DEG C, concrete waste grout is from sedimentation basin, the Date of Sampling of concrete waste grout
On January 6th, 2019, the preparation time of three groups of samples are on January 6th, 2019, observe decaying the time for three groups of pumping aid agents, specifically such as
Under:
On January 11st, 2019, the pumping aid agent of blank example start hardened without mobility；The pumping aid agent of embodiment 13 is in good condition, nothing
Precipitating, it is sticky and can arbitrarily stir；Out of order, no precipitating loses water condensation trend, January 12 to the pumping aid agent of comparative example 1
There is the case where partially hardened；
On January 18th, 2019, the pumping aid agent of blank example has no mobility, and dehydration is serious, and surface bleaches, basic inside and outside whole plates
Knot, can not stir；The pumping aid agent of embodiment 13 is in good condition, no precipitating, sticky arbitrarily to stir；The pumping aid agent shape of comparative example 1
State is bad, precipitates, and beginning dehydration is hardened, and insertion is harder, is not easy to stir, poor fluidity；
On January 31st, 2019, the pumping plate of blank example becomes solid, can not stir；The pumping aid agent of embodiment 13 is in good condition, nothing
Precipitating, it is sticky arbitrarily to stir；Out of order, dehydration is hardened for the pumping aid agent of comparative example 1, can not be inserted into, it is difficult to stir；
On 2 28th, 2019, the pumping plate of blank example became solid, can not stir；The pumping aid agent of embodiment 13 is in good condition, has
Slight lamination, but remain as viscous pasty state and can arbitrarily stir；The complete dehydration of the pumping aid agent of comparative example 1 is hardened, can not
Insertion, it is difficult to stir.
Show that the consumption proportion of the corrosion inhibiter and concrete waste grout in the present invention pumps final profit from above-mentioned tracking test
The performance of agent has a certain impact, and when inhibiter consumption it is excessive be more than the scope of the present invention after, pumping aid agent initial state is good
It is good, but be detrimental to save, it only begins to occur precipitating in 5 days hardened.Pumping aid agent of the invention then can be at room temperature (25 DEG C)
In the state of save 52 days, and always in sticky without hardened state is precipitated, using stirring, as pumping aid agent to pump line
Wetting action is good.
Effect example
The pumping aid agent 5g of Example 6-21 and blank example and comparative example 1, are placed in 21 DEG C of environment, after mixing evenly normal pressure
10 days are stood, the flowing and hardened performance test of pumping aid agent are carried out；Taking 15 section diameters is 2.5cm, and length is the empty steel pipe of 20cm,
One end is sealed with steel plate, each pumping aid agent is poured into respectively in 15 section steel pipes, and is poured out in 12s, weighs the wall built-up matter of pumping aid agent
Amount, and pumping aid agent is scraped with finger, test the lubrication sense of pumping aid agent.Flowing and hardened performance and the test result of lubrication sense are shown in Table
Shown in 1.
The performance test results of the different pumping aid agents of table 1
| Flowing and hardened performance | Wall built-up quality/g | Lubrication sense | |
| Embodiment 6 | Mixture is in sticky emulsus, without hardened, easily stirring | 1.94 | It is smooth |
| Embodiment 7 | Mixture is in sticky emulsus, without hardened, easily stirring | 1.95 | It is smooth |
| Embodiment 8 | Mixture is in sticky emulsus, without hardened, easily stirring | 1.95 | It is smooth |
| Embodiment 9 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.01 | It is smooth |
| Embodiment 10 | Mixture is in sticky emulsus, without hardened, easily stirring | 1.97 | It is smooth |
| Embodiment 11 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.03 | It is smooth |
| Embodiment 12 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.03 | It is smooth |
| Embodiment 13 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.07 | It is smooth |
| Embodiment 14 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.05 | It is smooth |
| Embodiment 15 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.04 | It is smooth |
| Embodiment 16 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.08 | It is smooth |
| Embodiment 17 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.10 | It is smooth |
| Embodiment 18 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.10 | It is smooth |
| Embodiment 19 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.08 | It is smooth |
| Embodiment 20 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.07 | It is smooth |
| Embodiment 21 | Mixture is in sticky emulsus, without hardened, easily stirring | 2.07 | It is smooth |
| Blank example | The white hardened bulk of mixture, can not stir | 1.52 | Unlubricated sense |
| Comparative example 1 | Mixture is in layering and precipitating state, is inserted into harder, stirring difficulty | 1.98 | Blocky and granular sensation is big |
Pumping aid agent in the present invention, at concrete waste grout, glucose, citric acid and water is grouped into, no excessive chemistry adds
Add agent, the adverse effect to concrete is reduced to minimum.As shown in Table 1, it is stored not under pumping aid agent normal temperature and pressure of the invention
It is hardened, it remains sticky emulsus, is conducive to stirring；And wall built-up quality is big, and lubrication sense is good, and there is good wetting pump line to make
With.It is not added with the pumping aid agent (blank example) of concrete waste grout corrosion inhibiter of the present invention, hardened serious, wall built-up quality is small, unlubricated sense,
Wetting action is poor.When adding the amount of concrete waste grout corrosion inhibiter of the present invention greater than range provided by the invention (comparative example 1), profit pump
Agent is difficult to keep sticky emulsus when storing, hardened serious, wall built-up quality reduces, and lubrication sense is greatly reduced, it is difficult to realize profit pipe mesh
's.
Application examples
Pumping aid agent in the present invention is applied in the pump line profit pump of concrete mixer, mortar is pumped instead of the profit bought, can save
A part of cost, specific as follows:
It is counted by capacity production, profit pump 30 side of mortar need to be stirred daily, every side's unit price is 350 yuan, the profit pump sand needed daily
Starch required cost are as follows: 30 × 350=10500 member；
After useless concrete and the separation of tank car cleaning of evaporator, waste pulp (solid content 45wt%-75wt%) the about side 25-40 daily, at rubbish
1000 yuan/vehicle of reason expense, per car carry 20 sides, and processing cost is calculated by daily 30 side waste pulp, then need processing cost daily:
1000/20 × 30=1500 member；
Therefore, after waste pulp being recycled, economic benefit is brought for enterprise daily are as follows: 1500+10500=12000 member.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (10)
1. a kind of concrete waste grout corrosion inhibiter, which is characterized in that it is by including that the ingredient of following parts by weight mixes: glucose
5-20 parts, 20-40 parts and water 45-75 parts of citric acid.
2. concrete waste grout corrosion inhibiter according to claim 1, which is characterized in that it is by the ingredient including following parts by weight
It mixes: 10-15 parts of glucose, 25-35 parts and water 55-65 parts of citric acid.
3. a kind of concrete waste grout corrosion inhibiter of any of claims 1 or 2 is utilizing answering in concrete waste grout preparation pumping aid agent
With.
4. a kind of pumping aid agent prepared with concrete waste grout corrosion inhibiter of any of claims 1 or 2, which is characterized in that it includes
The ingredient of following parts by weight: concrete waste grout and the concrete waste grout corrosion inhibiter for accounting for concrete waste grout weight 2%-10%.
5. pumping aid agent according to claim 4, it is characterised in that: the concrete waste grout corrosion inhibiter accounts for concrete waste grout weight
The 4%-8% of amount.
6. pumping aid agent according to claim 4, it is characterised in that: the concrete waste grout corrosion inhibiter accounts for concrete waste grout weight
The 5%-7% of amount.
7. pumping aid agent according to claim 4, it is characterised in that: the solid content in the concrete waste grout is 45wt%-
75 wt %。
8. pumping aid agent according to claim 4, it is characterised in that: the solid content in the concrete waste grout is 50 wt
%-70 wt %。
9. pumping aid agent according to claim 4, it is characterised in that: the solid content in the concrete waste grout is 55 wt
%-65 wt %。
10. a kind of application of pumping aid agent as claimed in claim 4 in concrete mixer profit pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383959.0A CN110171938B (en) | 2019-05-08 | 2019-05-08 | Concrete waste slurry corrosion inhibitor and application thereof, and pumping lubricant prepared from corrosion inhibitor and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383959.0A CN110171938B (en) | 2019-05-08 | 2019-05-08 | Concrete waste slurry corrosion inhibitor and application thereof, and pumping lubricant prepared from corrosion inhibitor and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110171938A true CN110171938A (en) | 2019-08-27 |
| CN110171938B CN110171938B (en) | 2021-07-06 |
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ID=67690664
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042408A (en) * | 1975-04-17 | 1977-08-16 | The Associated Portland Cement Manufacturers Limited | Hydraulic cements |
| CN1112601A (en) * | 1995-05-08 | 1995-11-29 | 化学工业部北京化工研究院 | Corrosion inhibitor for refrigerating fluid |
| CN105645800A (en) * | 2015-12-31 | 2016-06-08 | 中建商品混凝土成都有限公司 | Waste slurry recycling and reusing technology of concrete mixing station |
-
2019
- 2019-05-08 CN CN201910383959.0A patent/CN110171938B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042408A (en) * | 1975-04-17 | 1977-08-16 | The Associated Portland Cement Manufacturers Limited | Hydraulic cements |
| CN1112601A (en) * | 1995-05-08 | 1995-11-29 | 化学工业部北京化工研究院 | Corrosion inhibitor for refrigerating fluid |
| CN105645800A (en) * | 2015-12-31 | 2016-06-08 | 中建商品混凝土成都有限公司 | Waste slurry recycling and reusing technology of concrete mixing station |
Non-Patent Citations (1)
| Title |
|---|
| 施惠生等: "《混凝土外加剂实用技术大全》", 31 January 2008 * |
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