CN1079382C - Composite additive for concrete - Google Patents
Composite additive for concrete Download PDFInfo
- Publication number
- CN1079382C CN1079382C CN99112172A CN99112172A CN1079382C CN 1079382 C CN1079382 C CN 1079382C CN 99112172 A CN99112172 A CN 99112172A CN 99112172 A CN99112172 A CN 99112172A CN 1079382 C CN1079382 C CN 1079382C
- Authority
- CN
- China
- Prior art keywords
- concrete
- composite additive
- calcium
- condensation product
- naphthalene sulfonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/20—Sulfonated aromatic compounds
- C04B24/22—Condensation or polymerisation products thereof
- C04B24/226—Sulfonated naphtalene-formaldehyde condensation products
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a composite additive for concrete, which is composed of the following raw materials according to the proportion by weight: 75 to 85 wt% of naphthalenesulfonic acid formaldehyde condensate, 8 to 15 wt% of calcium lignosulfonate, 3 to 5 wt% of saccharified calcium, 2 to 5 wt% of citric acid and 1 to 2 wt% of sorbitol. The composite additive can increase the flowability of the concrete under the condition of not increasing a bleeding rate and is suitable for producing the concrete from various types of cement, so that the composite additive is worthy to popularize.
Description
The present invention relates to a kind of composite additive for concrete.
Concrete is the material of construction that modern maximum is used and since modern building fabric to stride greatly, towering, high direction such as durable develops, and presses for the various complicated requirement that concrete performance comprehensively satisfies modernization construction stage, operational phase.Then require concrete to have good workability in the modernization construction stage, comprise flowability, cohesiveness, water-retentivity, and require concrete before building, to keep its workability, to adapt to the needs of concrete pumping.Gong Ying concrete admixture in the market, the following defective of ubiquity in the middle of reality is used: though, the water-reducing effect that has is better, though it can make concrete flowability improve, causes the concrete water bleeding rate to increase, and influences its quality uniformity; Two, the cement adaptability to different varieties that has is relatively poor, cause easily concretely short coagulate, problem such as false set, it directly has influence on concrete normal construction thus.How can either under the prerequisite that does not increase bleeding rate, improve concrete flowability, can be that China has a difficult problem to be solved at present in the middle of the modernization construction not causing that concrete short coagulates, adapting to the cement fabrication of concrete of different varieties under the prerequisite of false set again.
The objective of the invention is provides a kind of composite additive for concrete for solving above-mentioned technical deficiency, can improve concrete flowability after it and the coagulation soil phase stir under the prerequisite that does not increase bleeding rate, and adapt to the cement fabrication of concrete of different varieties.
The objective of the invention is to be achieved through the following technical solutions: it is made composite additive for concrete by the following weight proportion raw material;
Naphthalene sulfonic acidformaldehyde condensation product 75-85
Calcium lignin sulphonate 8-15
Saccharification calcium 3-5
Citric acid 2-5
Sorbyl alcohol 1-2.
For further realizing purpose of the present invention, said naphthalene sulfonic acidformaldehyde condensation product is made by the following weight proportion raw material: NAPTHALENE FLAKES. (INDUSTRIAL GRADE 0.5, the vitriol oil 0.55, formaldehyde 0.32, liquid caustic soda 0.6, calcium hydroxide 0.3.
Its technological process is as follows:
NAPTHALENE FLAKES. (INDUSTRIAL GRADE drops into reactor, is warmed to 150-155 ℃, drips the vitriol oil, reacted 2-4 hour, add the water hydrolysis then, keep acidity, add formaldehyde condensation again more than 30%, temperature of reaction is controlled at 105 ℃, reacted 0.5-1 hour, then in and add liquid caustic soda and calcium hydroxide is neutralized to neutrality in the still, be naphthalene sulfonic acidformaldehyde condensation product after the drying, this condenses and calcium lignin sulphonate, saccharification calcium, citric acid, sorbyl alcohol mix to evenly by suitable proportion, are composite additive for concrete.
Advantage of the present invention: one, scientific formulation is reasonable, it can reduce the concrete water amount significantly, the big limit of the amount of making it levels off to the required best water consumption of hydrated reaction of cement, promptly guarantee to reduce to greatest extent under the chemically-bonded water prerequisite free-water quantity, it can reach dense, the effect efficiently of concrete height, and has realized improving concrete durability, improves intensity and mobile purpose; Two, utilize the tensio-active agent of different molecular weight compound, play super folded effect, the dispersion effect of cement granules is improved greatly, make that cement granules and water molecules are full and uniform to be combined, so concrete flowability is further improved; Three, adapt to widely, it can adapt to the manufacture of cement concrete of different varieties, can't cause concretely shortly coagulate, problem such as false set; Four, the concrete of mix of the present invention has good rheological properties, bleeding not, do not emanate, can reach self-flowing dense, so guarantee concrete pouring quality easily, prevent because of the bleeding segregation or the unreal concrete early defect that causes that vibrates, it can also regulate concrete time of coagulation simultaneously, improve concrete workability, improve concrete intensity, and make concrete volume stability in process of setting, hydration heat is low, temperature deformation is little, dry shrinkage is also little, not only be difficult for producing the crack of macroscopic view and microcosmic after the sclerosis, and have fine and close microcosmic and a microscopical structure, concrete impermeability and corrosion resistance nature are improved greatly, cause concrete weather resistance to strengthen greatly.
Embodiment 1:
Naphthalene sulfonic acidformaldehyde condensation product is made by the following weight proportion raw material: NAPTHALENE FLAKES. (INDUSTRIAL GRADE 0.5, the vitriol oil 0.55, formaldehyde 0.32, liquid caustic soda 0.6, calcium hydroxide 0.3.NAPTHALENE FLAKES. (INDUSTRIAL GRADE drops into reactor, be warmed to 150-155 ℃, drip the vitriol oil, reacted 2-4 hour, add the water hydrolysis then, keep acidity more than 30%, add formaldehyde condensation again, temperature of reaction is controlled at 105 ℃, reacts 0.5-1 hour, then in and add liquid caustic soda and calcium hydroxide is neutralized to neutrality in the still, be synthetic naphthalene sulfonic acidformaldehyde condensation product after the drying.
Take by weighing raw material by following weight proportion again:
Naphthalene sulfonic acidformaldehyde condensation product 75
Calcium lignin sulphonate 8
Saccharification calcium 3
Citric acid 2
Sorbyl alcohol 1
Then naphthalene sulfonic acidformaldehyde condensation product and calcium lignin sulphonate, saccharification calcium, citric acid, sorbyl alcohol are mixed to evenly by suitable proportion, be composite additive for concrete.
Embodiment 2:
Naphthalene sulfonic acidformaldehyde condensation product is made by the following weight proportion raw material: NAPTHALENE FLAKES. (INDUSTRIAL GRADE 0.5, the vitriol oil 0.55, formaldehyde 0.32, liquid caustic soda 0.6, calcium hydroxide 0.3.NAPTHALENE FLAKES. (INDUSTRIAL GRADE drops into reactor, be warmed to 150-155 ℃, drip the vitriol oil, reacted 2-4 hour, add the water hydrolysis then, keep acidity more than 30%, add formaldehyde condensation again, temperature of reaction is controlled at 105 ℃, reacts 0.5-1 hour, then in and add liquid caustic soda and calcium hydroxide is neutralized to neutrality in the still, be synthetic naphthalene sulfonic acidformaldehyde condensation product after the drying.
Take by weighing raw material by following weight proportion again:
Naphthalene sulfonic acidformaldehyde condensation product 80
Calcium lignin sulphonate 12
Saccharification calcium 4
Citric acid 3.5
Sorbyl alcohol 1.8
Then naphthalene sulfonic acidformaldehyde condensation product and calcium lignin sulphonate, saccharification calcium, citric acid, sorbyl alcohol are mixed to evenly by suitable proportion, be composite additive for concrete.
Embodiment 3:
Naphthalene sulfonic acidformaldehyde condensation product is made by the following weight proportion raw material: NAPTHALENE FLAKES. (INDUSTRIAL GRADE 0.5, the vitriol oil 0.55, formaldehyde 0.32, liquid caustic soda 0.6, calcium hydroxide 0.3.NAPTHALENE FLAKES. (INDUSTRIAL GRADE drops into reactor, be warmed to 150-155 ℃, drip the vitriol oil, reacted 2-4 hour, add the water hydrolysis then, keep acidity more than 30%, add formaldehyde condensation again, temperature of reaction is controlled at 105 ℃, reacts 0.5-1 hour, in still, add liquid caustic soda then and calcium hydroxide is neutralized to neutrality, be synthetic naphthalene sulfonic acidformaldehyde condensation product after the drying.
Take by weighing raw material (kg) by following weight proportion again:
Naphthalene sulfonic acidformaldehyde condensation product 85
Calcium lignin sulphonate 15
Saccharification calcium 5
Citric acid 5
Sorbyl alcohol 28
Then naphthalene sulfonic acidformaldehyde condensation product and calcium lignin sulphonate, saccharification calcium, citric acid, sorbyl alcohol are mixed to evenly by suitable proportion, be composite additive for concrete.
Claims (2)
1, composite additive for concrete is characterized in that it is made by the following weight proportion raw material:
Naphthalene sulfonic acidformaldehyde condensation product 75-85
Calcium lignin sulphonate 8-15
Saccharification calcium 3-5
Citric acid 2-5
Sorbyl alcohol 1-2.
2, composite additive for concrete according to claim 1 is characterized in that; Said naphthalene sulfonic acidformaldehyde condensation product is made by the following weight proportion raw material: NAPTHALENE FLAKES. (INDUSTRIAL GRADE 0.5, the vitriol oil 0.55, formaldehyde 0.32, liquid caustic soda 0.6, calcium hydroxide 0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112172A CN1079382C (en) | 1999-04-14 | 1999-04-14 | Composite additive for concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112172A CN1079382C (en) | 1999-04-14 | 1999-04-14 | Composite additive for concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1270150A CN1270150A (en) | 2000-10-18 |
| CN1079382C true CN1079382C (en) | 2002-02-20 |
Family
ID=5275501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99112172A Expired - Fee Related CN1079382C (en) | 1999-04-14 | 1999-04-14 | Composite additive for concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1079382C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328203C (en) * | 2005-03-30 | 2007-07-25 | 青海大学 | Additive for saltresistance series concrete |
| CN102101759B (en) * | 2010-12-30 | 2012-08-22 | 广东水电二局股份有限公司 | Concrete composite additive and preparation method and use thereof |
| RU2484036C1 (en) * | 2011-12-30 | 2013-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Белгородский государственный технологический университет им. В.Г. Шухова" | Complex organic additive for inhibiting alkaline corrosion |
| CN104016613B (en) * | 2014-06-19 | 2016-02-03 | 长沙矿山研究院有限责任公司 | A kind ofly improve additive of filling in mine slip degree of mobilization and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034193A (en) * | 1989-01-14 | 1989-07-26 | 冶金部建筑研究总院 | Concrete dewater agent of pumping over type |
| CN1084836A (en) * | 1992-07-22 | 1994-04-06 | 山道士有限公司 | The gelling composition of good workability |
-
1999
- 1999-04-14 CN CN99112172A patent/CN1079382C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034193A (en) * | 1989-01-14 | 1989-07-26 | 冶金部建筑研究总院 | Concrete dewater agent of pumping over type |
| CN1084836A (en) * | 1992-07-22 | 1994-04-06 | 山道士有限公司 | The gelling composition of good workability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1270150A (en) | 2000-10-18 |
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