CN101838129B - Premixed dry mortar - Google Patents

Premixed dry mortar Download PDF

Info

Publication number
CN101838129B
CN101838129B CN2010101603563A CN201010160356A CN101838129B CN 101838129 B CN101838129 B CN 101838129B CN 2010101603563 A CN2010101603563 A CN 2010101603563A CN 201010160356 A CN201010160356 A CN 201010160356A CN 101838129 B CN101838129 B CN 101838129B
Authority
CN
China
Prior art keywords
dry
sand
mix
water glass
quality
Prior art date
Application number
CN2010101603563A
Other languages
Chinese (zh)
Other versions
CN101838129A (en
Inventor
肖雪军
鞠宇飞
刘文斌
徐开胜
张小鹏
Original Assignee
常州市众华建材科技有限公司
常州工程职业技术学院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 常州市众华建材科技有限公司, 常州工程职业技术学院 filed Critical 常州市众华建材科技有限公司
Priority to CN2010101603563A priority Critical patent/CN101838129B/en
Publication of CN101838129A publication Critical patent/CN101838129A/en
Application granted granted Critical
Publication of CN101838129B publication Critical patent/CN101838129B/en

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention relates to a building material technology, in particular to a concrete premix. A premixed dry mortar is prepared by mainly mixing the components of 12-25 percent of cement, 3-4 percent of pulverized fuel ash, 32-50 percent of yellow sand, 2.7-3.4 percent of mortar thickening powder and 0-0.05 percent of additive. The premixed dry mortar is characterized in that sodium silicate casting used sand is added in the main components. The invention solves the problem of larger consumption of the yellow sand in the traditional premixed dry mortar.

Description

Dry-mix
Technical field
The present invention relates to building material technology, relate in particular to a kind of concrete and use Preblend.
Background technology
Cast used sand can be divided into three kinds of wet type old sand, resin bonded sand and used sodium silicate sands.But with regard to regenerating used, be difficult relatively.The depleted old sand is an alkalescence, and part is toppled over by institute, and not even a blade of grass grows, adds China's high grade quartz sand resource relative shortage, if the old sand comprehensive utilization is not discarded in a large number, is exactly the significant wastage to limited resources, and causes serious environmental to pollute.China is world's foundry industry first big country; China in 2008 foundry goods YO reaches more than 3,000 ten thousand tons, accounts for 40% of worldwide production, and the 1 year depleted old sand amount in the whole nation is more than 3,000 ten thousand tons; Major part is by uncontrollable discharge, and wherein the quantity discharged of water glass cast used sand is also more than 1,000,000 tons.The dehydration high-modulus sodium silicate water glass, yellow soda ash and the sodium hydrogencarbonate that contain in the water glass cast used sand can cause disadvantageous effect to the workability and the mechanical property of dry-mix, so the water glass cast used sand is not always as the raw materials for production of dry-mix.
Dry-mix is meant that fine aggregate and inorganic binder, water-keeping thickening material, mineral admixture and the additive handled through dry screened carry out a kind of particulate state or the powdery that physical mixed forms by a certain percentage; Form with packed or in bulk is transported to the building site, the material that can directly use after adding water and mixing and stirring.Stir mortar with conventional on-site and compare, dry-mix has following advantage: (1) excellent quality; (2) wide in variety; (3) workability is good; (4) easy to use; (5) environmental protection; (6) economy.Wherein the used fine aggregate of dry-mix mainly is natural yellow ground, and yellow ground is the maximum starting material of consumption in the dry-mix.Present yellow ground is Nonrenewable resources, and through market survey, ceiling price once increased to 100 yuan/ton in recent years, and the trend of this rise in price also clearly.Country will inevitably limit the exploitation of natural yellow ground to the protection of natural river course, makes the resource of yellow ground more and more nervous, will inevitably bring restriction to the development of dry-mix.
Summary of the invention
In order to overcome above-mentioned defective, the technical problem that the present invention will solve is: the bigger problem of yellow ground usage quantity in the existing dry-mix provides a kind of yellow ground usage quantity little dry-mix.
In order to overcome the defective that exists in the background technology; The technical solution adopted for the present invention to solve the technical problems is: a kind of dry-mix; Main constituent is that cement, flyash, yellow ground, mortar densification powder and admixture are mixed with and form; In main constituent, add the water glass cast used sand, the quality of constituent is formed as follows:
Cement: 12~25%
Flyash: 3~4%
Yellow ground: 32~50%
Water glass cast used sand: 32~50%
Mortar densification powder: 2.7~3.4%
Admixture: 0~0.002%
Admixture described in the present invention is water reducer, air entrapment agent or redispersable latex powder or above-described more than one mixture.
Described water reducer accounts for 0.1 of dry-mix quality~0.3 ‰ described in the present invention; Described air entrapment agent accounts for 0.06 of dry-mix quality~0.09 ‰; Said redispersable latex powder accounts for 0.1 of dry-mix quality~1 ‰; Above-mentioned used water reducer is a calcium lignin sulphonate, and air entrapment agent is an X 2073, and redispersable latex powder is the EVA rubber powder of Wa Ke company; Wherein calcium lignin sulphonate has delayed coagulation concurrently; Above-mentioned used mortar densification powder is the HZ-P highly effective water-keeping densification powder that Changzhou great positive building materials ltd is sold, and has good water-keeping thickening effect, can significantly improve the workability of dry-mix.
Employed cement is 32.5 or 42.5 ordinary Portland cements among the present invention, and the flyash that is adopted is II level ash, and it has better economic property when satisfying the technical feature requirement; The yellow ground of being selected for use among the present invention is a natural river sand, and its silt content is 0.9%, and fineness modulus is 2.3, and apparent density is 2640kg/m 3
Its composition of water glass cast used sand described in the present invention has SiO 2, dehydration high-modulus sodium silicate water glass, yellow soda ash and sodium hydrogencarbonate, also have a spot of red stone simultaneously, wherein SiO 2Content is more than 90%, and fineness modulus is 1.9, is mainly silica sand, and silt content is 4.0%, and fineness modulus is 1.9, and apparent density is 2610kg/m 3Wherein " mud " in the water glass cast used sand is different from " mud " in the natural yellow ground, mainly is tiny silica powder, can be used as the flour filler in the dry-mix, and is less to the properties of dry-mixed mortar influence.Experimental study shows that under the same intensity grade, the water glass cast used sand less than 60% o'clock, does not have negative interaction to dry-mix workability and mechanical property for sand coarse aggregate ratio.This external water glass cast used sand and yellow ground can be through changing the dry-mix that cement-sand ratio prepares different intensity grades under the situation of mixing.
Beneficial effect: under the prerequisite that guarantees identical properties of dry-mixed mortar, utilize water glass cast used sand instead of part yellow ground, can solve the stacking problem of old sand like this, can reduce the cost of dry-mix again as gathering materials the preparation dry-mix.The destruction that simultaneously can avoid the water glass cast used sand that environment is caused.
Embodiment
The present invention is described further through following instance.
Instance 1~6 takes by weighing different material according to the quality mixture ratio in the table 1 and mixes, and the water of adding 17~22% stirs.Testing used cement is 32.5 ordinary Portland cements, and the yellow ground fineness modulus is 2.3, and water glass cast used sand fineness modulus is 1.9, and flyash is II level ash.
Can find out that by table 1 test-results along with the increase of water glass cast used sand volume, dry-mix intensity is on a declining curve.The water glass cast used sand for sand coarse aggregate ratio below 60%, very little to the influence of intensity, also very little to the mortar working Effect on Performance.
Instance 7~12 takes by weighing different material according to the quality mixture ratio in the table 2 and mixes, and the water of adding 16~22% stirs.Testing used cement is 42.5 ordinary Portland cements, and the yellow ground fineness modulus is 2.3, and water glass cast used sand fineness modulus is 1.9, and flyash is II level ash.
Can know by instance 7~10 data, water glass cast used sand and yellow ground to the situation of mixing under, can prepare the dry powder motar of four strength grades commonly used through the adjustment wc, be respectively DPM5.0, DPM7.5, DPM10 and DPM15.Through the quality mixture ratio that instance 7~10 is embodied, can suitably reduce slurry consistency through the adjustment water requirement, can prepare the dry-mixed masonry mortar of four strength grades such as DMM5.0, DMM7.5, DMM10 and DMM15 of corresponding label.
Instance 11,12 shows, water glass cast used sand and yellow ground to the situation of mixing under, can prepare the dry powder ground mortar of DSM15 and two labels commonly used of DSM20, test-results shows workability and good mechanical properties.
Under the table 1 same intensity grade, the cast used sand volume is to the influence of dry-mix serviceability
Table 2 yellow ground, water glass cast used sand be under the situation of mixing, the preparation of different intensity grades dry-mix
Sequence number Instance 7 Instance 8 Instance 9 Instance 10 Instance 11 Instance 12
Strength grade DPM5.0 DPM7.5 DPM10 DPM15 DSM15 DSM20
42.5 cement/Kg 196.3 226.3 256.3 286.3 271.5 351.9
Flyash/Kg 50.2 50.2 50.2 50.2 66.6 66.6
Densification powder/Kg 50.2 40.2 40.2 40.2 54 54
Air entrapment agent/Kg 0.0251 0.0201 0.0201 0.0201 0.027 0.027
Wood calcium/Kg 0.1506 0.1206 0.1206 0.1206 0.162 0.162
Yellow ground/Kg 736.6 586.6 571.6 556.6 704.1 663.9
Water glass cast used sand/Kg 736.6 586.6 571.6 556.6 704.1 663.9
Denseness/mm 109 86 106 100 41 60
28d intensity/MPa 6.6 11.6 13.7 15.8 17.99 20.48

Claims (3)

1. dry-mix, main constituent are that cement, flyash, yellow ground, mortar densification powder and admixture are mixed with and form, and it is characterized in that: in main constituent, add the water glass cast used sand, the quality of constituent is formed as follows:
Cement: 12~25%
Flyash: 3~4%
Yellow ground: 32~50%
Water glass cast used sand: 32~50%
Mortar densification powder: 2.7~3.4%
Admixture: 0~0.05%
Said admixture is water reducer, air entrapment agent or redispersable latex powder or above-described more than one mixture.
2. dry-mix as claimed in claim 1 is characterized in that: described water reducer account for water glass cast used sand preparation the dry-mix quality 0.1~0.3 ‰; Described air entrapment agent accounts for 0.06 of dry-mix quality~0.09 ‰; Said redispersable latex powder accounts for 0.1 of dry-mix quality~1 ‰.
3. dry-mix as claimed in claim 1 is characterized in that: described its composition of water glass cast used sand has SiO 2, sodium silicate water glass, yellow soda ash and sodium hydrogencarbonate contain red stone, wherein SiO simultaneously 2Content is more than 90%, and fineness modulus is 1.9.
CN2010101603563A 2010-04-30 2010-04-30 Premixed dry mortar CN101838129B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101603563A CN101838129B (en) 2010-04-30 2010-04-30 Premixed dry mortar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101603563A CN101838129B (en) 2010-04-30 2010-04-30 Premixed dry mortar

Publications (2)

Publication Number Publication Date
CN101838129A CN101838129A (en) 2010-09-22
CN101838129B true CN101838129B (en) 2012-08-29

Family

ID=42741838

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010101603563A CN101838129B (en) 2010-04-30 2010-04-30 Premixed dry mortar

Country Status (1)

Country Link
CN (1) CN101838129B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102701673A (en) * 2012-05-28 2012-10-03 江西中科新建材有限公司 Masonry dry-mixed mortar
CN102701674A (en) * 2012-05-28 2012-10-03 江西中科新建材有限公司 Dry-mixed mortar for ground
CN102701681A (en) * 2012-06-28 2012-10-03 秦大春 Waste foundry sand dry-mixed mortar
CN105198482B (en) * 2015-09-16 2019-01-11 诸暨市兆山天峰干混砂浆有限公司 Aerated-block special masonry mortar
CN105837141A (en) * 2016-04-26 2016-08-10 安徽坤隆新型建材有限公司 Acid-resistant dry-mixed mortar
CN105837140A (en) * 2016-04-26 2016-08-10 安徽坤隆新型建材有限公司 Brick making mortar
CN107056178A (en) * 2016-10-12 2017-08-18 上海漕源新型建材有限公司 A kind of environmentally friendly dry powder and mortar
CN109650817A (en) * 2019-01-21 2019-04-19 淳安泰源建材有限公司 A kind of masonry mortar and its preparation process
CN110183131A (en) * 2019-06-03 2019-08-30 厦门兑泰实业有限公司 A method of plastering mortar and glue for tile auxiliary agent are produced using black casting sand
CN110128067A (en) * 2019-06-03 2019-08-16 厦门兑泰实业有限公司 A method of anticracking grout is produced using black casting sand

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101376579A (en) * 2008-10-09 2009-03-04 江苏省建筑工程集团有限公司 Limestone powder dry powder mortar

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101376579A (en) * 2008-10-09 2009-03-04 江苏省建筑工程集团有限公司 Limestone powder dry powder mortar

Also Published As

Publication number Publication date
CN101838129A (en) 2010-09-22

Similar Documents

Publication Publication Date Title
CN105272027B (en) A kind of compression strength 300MPa above ultra-high performance concretes and preparation method thereof
CN102924014B (en) Binding mortar with light weight and high droop resistance and preparation and use methods
CN1323049C (en) Machine-made sand self-compacting concrete
CN103288398B (en) High-performance machine-made sand marine concrete and preparation method thereof
Rodriguez et al. Strength and workability of masonry mortars manufactured with ladle furnace slag
CN106630844A (en) Set-retarding type long-distance pumping type concrete prepared by waste slag of subway project and application
CN102992722B (en) Ultrahigh-strength grouting material based on iron tailing sand and cement and preparation method of grouting material
CN103145360B (en) Viscosity modifier for high or ultrahigh-strength concrete
CN101323515B (en) Ultra-high strong concrete having ultra-high pumping performance and method for preparing the same
CN104446045B (en) A kind of alkali-activated carbonatite Binder Materials and preparation method thereof
CN100577599C (en) Limestone powder dry powder mortar
CN101423364B (en) Wet mixture mortar capable of pumping
CN105174854B (en) A kind of ceramic polished powder powder concrete
CN102491687B (en) Self-compaction concrete used for filling closed space as well as preparation method and application of same
CN101008315B (en) Paste-like backfill technology used in coal cutting area
CN101781109B (en) Light-weight dry-mixed masonry mortar
CN103896503A (en) Novel red-mud-based grouting material and preparation method thereof
CN103613303B (en) Modified limestone powder high-performance mineral admixture and preparation method thereof
CN101880142B (en) Method for preparing wall and floor tile adhesive mortar by using mill tailings
CN104987117A (en) Environment-friendly building thermal insulation materials
CN104829178A (en) C30 grade steel-doped slag recycled aggregate self compacting concrete and preparation method thereof
CN105776994A (en) Self-compacting concrete prepared from concrete mixing station waste slurry
CN103102125B (en) Manufactured sand underwater dispersion resistant concrete and preparation method thereof
CN104150840B (en) C60 full-manufactured sand super high-rise pump concrete
CN103102093B (en) Anticorrosion anticrack reinforcing agent for concrete

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model