CN110563355A - Masonry cement for home decoration and production method thereof - Google Patents
Masonry cement for home decoration and production method thereof Download PDFInfo
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- CN110563355A CN110563355A CN201910935239.0A CN201910935239A CN110563355A CN 110563355 A CN110563355 A CN 110563355A CN 201910935239 A CN201910935239 A CN 201910935239A CN 110563355 A CN110563355 A CN 110563355A
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- cement
- powder
- home decoration
- masonry
- masonry cement
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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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of cement for home decoration, and particularly discloses masonry cement for home decoration, which is prepared from the following raw materials in percentage by mass: 60-64% of clinker, 5-6.5% of desulfurized gypsum, 28-30% of limestone and 3-4% of slag. Rolling the clinker, the desulfurized gypsum, the limestone, the slag and the grinding aid by using a roller press to obtain powder A; selecting the powder A by a V-shaped powder selecting machine to obtain fine powder B and coarse powder C; sending the coarse powder C into a ball mill for ball milling to obtain powder D; and (3) repeating the step (2) and the step (3) on the powder D, wherein the fine powder B obtained in the step (2) is a masonry cement finished product. The masonry cement has multiple use functions of easy mixing, easy smearing, proper initial setting time, high early strength, no bleeding, no layering, no bottom grabbing, strong cohesiveness, good durability, no brick cracking, no sand return and the like, and has obvious social benefit.
Description
Technical Field
The invention relates to the technical field of cement for home decoration, in particular to masonry cement for home decoration and a production method thereof.
Background
The masonry cement is a hydraulic cementing material, the code is M, which is prepared by taking one or more than one active mixed material or industrial waste with hydraulicity as a main raw material, adding a proper amount of portland cement clinker and gypsum and grinding. The cement has lower strength, can not be used for reinforced concrete or structural concrete, and is mainly used for masonry and plastering mortar, cushion concrete and the like of industrial and civil buildings; the cement has the advantages of high strength, small water seepage amount, good water retention and the like.
Along with the rapid development of the decoration market, home decoration cement becomes one of the development directions of city decoration construction, so more new requirements are put on the cement, the radiation quantity of the cement is required to be low for the use in home decoration, and the early strength of the cement is required to be high so as to meet the condition of short-term construction of home decoration.
Disclosure of Invention
the invention provides masonry cement for home decoration and a production method thereof, which aim to solve the problem that slag cement in the prior art cannot meet the use requirement of home decoration.
In order to achieve the purpose, the technical scheme of the invention is as follows:
The cement is used for building and building home decoration, and is prepared from the following raw materials in percentage by mass: 60-64% of clinker, 5-6.5% of desulfurized gypsum, 28-30% of limestone and 3-4% of slag.
The technical principle and the effect of the technical scheme are as follows:
1. In the technical scheme, 5-6.5% of desulfurized gypsum and SO in cement are adopted3The content of (2) is moderate, so that the initial setting time of the cement is suitable, namely the initial setting time meets the national industry standard of more than 45min, and meanwhile, the difference of the initial setting time of the masonry cement adopting 5 percent of desulfurized gypsum and 6.5 percent of desulfurized gypsum is about 30min, namely the cement can be adjusted under the range value so that the cement can adapt to the climate of hot summer and cold winter in Chongqing.
2. 28-30% of limestone is adopted in the scheme, on one hand, the limestone is a natural and harmless mixed material, the radiation quantity of cement can be effectively reduced, and the limestone is very suitable for home decoration, on the other hand, the use of 28-30% of limestone also improves the early strength of the cement, and the early strength improvement can enable decoration engineering to be demolded in a short time, so that the construction requirements of short-term engineering such as home decoration and the like can be met, and the engineering progress is improved.
3. the use of 3-4% slay in this scheme, the use of slay can improve the guarantor's water retention nature of mortar on the one hand, reduces the heat that produces when the hydration simultaneously, because the easy wearing nature of slay is poor on the one hand, consequently the influence of slay to cement powder specific surface area can be avoided in the use of a small amount of slay, also can reduce the radiant quantity that brings because of the slay simultaneously, makes this cement more be applicable to the home decoration and uses.
Further, the raw material also included 0.022% grinding aid.
Has the advantages that: grinding aid is added into the raw materials, so that the raw materials are more favorably ground.
Further, the grinding aid is an alcohol amine compound.
Has the advantages that: the grinding aid is a common grinding aid in the market, is convenient to purchase, and has the effect of improving early strength of cement.
Further, the mass percentage of the desulfurized gypsum in the raw material of the cement is 5%.
Has the advantages that: the initial setting time of the masonry cement under the mass percentage is about 150-165 min (the initial setting time of the cement is required to be more than 45min by national industry standards), the masonry cement is suitable for being used in cold winter in Chongqing, and the initial setting of the cement can be accelerated in a humid environment.
further, the mass percent of the desulfurized gypsum in the raw materials of the cement is 6-6.5%.
Has the advantages that: the initial setting time of the masonry cement under the mass percentage is about 175-180 min (the initial setting time of the national standard is more than 45min), the masonry cement is suitable for hot summer in Chongqing, and the initial setting time of the cement is shortened due to high temperature in summer and fast evaporation of moisture in the cement, so that the initial setting time of the cement can be prolonged by properly adopting the cement with higher content of desulfurized gypsum.
The invention also discloses a production method of the masonry cement for home decoration, which comprises the following steps:
Step 1: rolling the clinker, the desulfurized gypsum, the limestone, the slag and the grinding aid by using a roller press to obtain powder A;
Step 2: selecting the powder A in the step 1 by adopting a V-shaped powder selecting machine to obtain fine powder B and coarse powder C;
and step 3: sending the coarse powder C obtained in the step 2 into a ball mill for ball milling to obtain powder D;
and 4, step 4: and (3) repeating the step (2) and the step (3) on the powder material D obtained in the step (3), wherein the fine powder B obtained in the step (2) is a masonry cement finished product.
Has the advantages that: the masonry cement prepared by the process has the advantages of uniform fineness (the screen allowance is less than 5%) through detection, has multiple use functions of easy mixing, easy smearing, proper initial setting time, high early strength, no bleeding, no layering, no bottom grabbing, no brick cracking, no sand return and the like, has obvious social benefit, can be popularized and applied in home decoration engineering construction, and fills the blank of the home decoration cement market.
Further, the specific surface area of the fine powder B obtained in the step 2 is not less than 450m2/kg。
Has the advantages that: the specific surface area is not less than 450m2In the/kg range, the specific surface area of the masonry cement is large, so that the cement is easy to mix and smear, the cement can be fully hydrated in the early stage, the early strength of the cement in the specific surface area range is over 60 percent of the later strength according to experiments, the time for removing the formwork can be shortened when the early strength of the cement is higher, the construction period is shortened, and the masonry cement is very suitable for home decoration.
Detailed Description
The following is further detailed by way of specific embodiments:
Examples 1-5 the raw material formulations are shown in table 1 below:
Table 1 shows the raw material ratios (in mass percent) of masonry cements for home decoration in examples 1 to 5
wherein the clinker comprises the following main mineral components: dicalcium silicate, tricalcium silicate, tetracalcium aluminoferrite and tricalcium aluminate.
The mixture ratio of each component in the clinker meets the national standard GB/T21372-2008 Portland cement clinker.
the preparation process of the clinker comprises the following steps: after being crushed in mine, the limestone is homogenized, mixed with siliceous material, aluminous material and iron material in certain proportion, ground into raw material powder, and the homogenized raw material powder is calcined into clinker through preheater, decomposing furnace and rotary kiln.
The main components of the slag in this application are shown in table 2 below.
Table 2 shows the main components and contents (% by mass) of slag
the main component of the grinding aid is an alcohol amine compound, and the grinding aid adopts a model provided by Chongqing branch company of Tangshan Jidong cement admixture GmbH: JY-GA-3FK grinding aid.
The following method for producing masonry cement for home decoration, which is described in detail by taking example 1, comprises the steps of:
Step 1: 60 percent of clinker, 6.5 percent of desulfurized gypsum, 29.5 percent of limestone, 4 percent of slag and 0.022 percent of grinding aid are mixed and rolled by a rolling machine to obtain powder A.
Step 2: and (3) selecting the powder A in the step (1) by adopting a V-shaped powder selecting machine to obtain fine powder B and coarse powder C.
And step 3: and (3) sending the coarse powder C obtained in the step (2) into a ball mill for ball milling treatment to obtain powder D.
And 4, step 4: and (3) repeating the step (2) and the step (3) on the powder material D obtained in the step (3), wherein the fine powder B obtained in the step (2) is a masonry cement finished product.
Examples 2 to 5 were the same as in example 1 except that the compounding ratio of the raw materials was different.
In addition, 3 sets of comparative experiments were carried out on masonry cements prepared in the following proportions in examples 1 to 5:
Table 3 shows the raw material ratios (in mass percent) of comparative examples 1 to 3
wherein comparative examples 1 to 3 were produced in the same manner as in example 1.
Now, the masonry cement prepared in the examples 1 to 5 and the masonry cement prepared in the comparative examples 1 to 3 are detected, and the detection items mainly comprise: the specific surface area of the cement is detected by a surface area detector, the setting time is measured by GB/T1346-2011 test method for water consumption, setting time and stability of standard consistency of the cement, the compressive strength of the cement for 3 days and 28 days is detected by GB/T17671-1999 test method for strength of cement mortar (ISO method), and the detection results are shown in the following table 4.
In addition, the flow expansion degree of the cement paste prepared in the examples 1-5 is detected to be 220-240mm by using a flow expansion degree detector, and the fineness of the cement in the examples 1-5 is detected to be uniform by using a 45-micrometer sieve analysis method (the result is expressed by the percent of the residue on the sieve, and the residue on the sieve is less than 5%).
The cements obtained in examples 1 to 5 and comparative examples 1 to 3 were made into mortar, and water retention was measured according to the method for measuring water retention of masonry cement in appendix A of national standards (GB/T3183-2017 masonry cement), wherein the water retention of the cement mortar in examples 1 to 5 was about 90%, and the water retention of the cement mortar in comparative examples 1 to 3 was about 80%.
Table 4 shows the results of the tests of examples 1 to 5 and comparative examples 1 to 3
In combination with table 4 above, it can be seen that:
1. the specific surface areas of the masonry cements prepared in examples 1 to 5 are not less than 450m2kg proves that the cement prepared by the method has large specific surface area, is easy to mix and smear, can be fully hydrated in the early stage, and has high early strength, the early strength (3d compressive strength) of the cement prepared by the examples 1-5 is more than 60% of the later strength (28d compressive strength), and the higher the early strength of the cement is, the shorter the formwork removal time is, so that the construction period is shortened, and the cement is very suitable for home decoration.
2. While the specific surface area of the masonry cement obtained in comparative examples 1-3 was reduced, particularly in comparative example 1, the specific surface area was reduced by about 14% as compared to that of example 1, because the amount of slag used in comparative example 1 was high, slag was able to optimize the micro-cellular structure of the cement when it was pulverized, but the slag was poor in grindability, resulting in a reduction in the specific surface area of the cement, whereas in comparative examples 2-3, the specific surface area was increased as compared to comparative example 1, but was still much lower than that of the cement obtained in examples 1-5.
3. The masonry cement obtained in example 1-2 has a longer initial setting time of 175 to 180min, while the masonry cement obtained in example 3-5 has a shorter initial setting time of 150 to 165min, SO that such a cement is very suitable for use in Chongqing local climates, for example, in high-temperature weather of 7 to 8 months, cement having a desulfurized gypsum content of 6% or 6.5% can be used, and the mortar has a shortened setting time at high temperature, but the increased desulfurized gypsum content increases SO in the cement3the initial setting time of the cement is further prolonged, and the cement mortar is more suitable for the construction period.
4. the compressive strength of the cements prepared in examples 1-5 measured after 28 days of setting is greater than 36.5MPa, and the cement standard of M32.5 grade is satisfied, while the early compressive strength of the cements prepared in comparative examples 1-3 is reduced, and the early strength (3d compressive strength) of the cements prepared in comparative examples 1-3 is less than 60% of the later strength (28d compressive strength), i.e. the early strength is low, and the cement can not be demolded in a short time when in use, so that the cement is not suitable for short-term engineering such as home decoration.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics in the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the present invention, several modifications and improvements can be made, and these should also be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. The masonry cement for home decoration is characterized in that: the cement is prepared from the following raw materials in percentage by mass: 60-64% of clinker, 5-6.5% of desulfurized gypsum, 28-30% of limestone and 3-4% of slag.
2. A masonry cement for home decoration according to claim 1, characterized in that: the feedstock also included 0.022% grinding aid.
3. The masonry cement for home decoration according to claim 2, characterized in that: the grinding aid is an alcamine compound.
4. A masonry cement for home decoration according to claim 2, characterized in that: the mass percentage of the desulfurized gypsum in the raw material of the cement is 5 percent.
5. A masonry cement for home decoration according to claim 2, characterized in that: the mass percentage of the desulfurized gypsum in the raw materials of the cement is 6-6.5%.
6. The method for producing the masonry cement for home decoration according to any one of claims 2 to 5, characterized by: the method comprises the following steps:
Step 1: rolling the clinker, the desulfurized gypsum, the limestone, the slag and the grinding aid by using a roller press to obtain powder A;
Step 2: selecting the powder A in the step 1 by adopting a V-shaped powder selecting machine to obtain fine powder B and coarse powder C;
And step 3: sending the coarse powder C obtained in the step 2 into a ball mill for ball milling to obtain powder D;
and 4, step 4: and (3) repeating the step (2) and the step (3) on the powder material D obtained in the step (3), wherein the fine powder B obtained in the step (2) is a masonry cement finished product.
7. the masonry cement for home decoration according to claim 6, characterized in that: the specific surface area of the fine powder B obtained in the step 2 is not less than 450m2/kg。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910935239.0A CN110563355A (en) | 2019-09-29 | 2019-09-29 | Masonry cement for home decoration and production method thereof |
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| CN201910935239.0A CN110563355A (en) | 2019-09-29 | 2019-09-29 | Masonry cement for home decoration and production method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943537A (en) * | 2020-08-07 | 2020-11-17 | 绍兴柯桥第三水泥有限公司 | Masonry cement and preparation method thereof |
| CN112028504A (en) * | 2020-08-25 | 2020-12-04 | 湖州市菱湖三狮水泥有限公司 | Composite cement and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223235A (en) * | 1997-10-01 | 1999-07-21 | 格雷斯公司 | Improved processing additives for hydraulic cements |
| CN1478749A (en) * | 2002-08-26 | 2004-03-03 | 上海白水泥有限公司 | White masonry cement and its production method |
| CN102515585A (en) * | 2011-11-29 | 2012-06-27 | 湖南科技大学 | Method for utilizing semidry desulfurization waste residues to prepare masonry cement |
| CN106746797A (en) * | 2016-11-28 | 2017-05-31 | 中国建筑材料科学研究总院 | Masonry mortar cement special and preparation method thereof |
-
2019
- 2019-09-29 CN CN201910935239.0A patent/CN110563355A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223235A (en) * | 1997-10-01 | 1999-07-21 | 格雷斯公司 | Improved processing additives for hydraulic cements |
| CN1478749A (en) * | 2002-08-26 | 2004-03-03 | 上海白水泥有限公司 | White masonry cement and its production method |
| CN102515585A (en) * | 2011-11-29 | 2012-06-27 | 湖南科技大学 | Method for utilizing semidry desulfurization waste residues to prepare masonry cement |
| CN106746797A (en) * | 2016-11-28 | 2017-05-31 | 中国建筑材料科学研究总院 | Masonry mortar cement special and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943537A (en) * | 2020-08-07 | 2020-11-17 | 绍兴柯桥第三水泥有限公司 | Masonry cement and preparation method thereof |
| CN111943537B (en) * | 2020-08-07 | 2022-03-15 | 绍兴柯桥第三水泥有限公司 | Masonry cement and preparation method thereof |
| CN112028504A (en) * | 2020-08-25 | 2020-12-04 | 湖州市菱湖三狮水泥有限公司 | Composite cement and preparation method thereof |
| CN112028504B (en) * | 2020-08-25 | 2022-03-18 | 湖州市菱湖三狮水泥有限公司 | Composite cement and preparation method thereof |
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