CN105254203A - Concrete and mortar expanding agent - Google Patents
Concrete and mortar expanding agent Download PDFInfo
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- CN105254203A CN105254203A CN201510617196.3A CN201510617196A CN105254203A CN 105254203 A CN105254203 A CN 105254203A CN 201510617196 A CN201510617196 A CN 201510617196A CN 105254203 A CN105254203 A CN 105254203A
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Abstract
The invention discloses a concrete and mortar expanding agent, and belongs to the technical field of building material. The concrete and mortar expanding agent is prepared from, by weight, 90 to 100 parts of native alum, 50 to 60 parts of modified gypsum powder, 35 to 45 parts of periclase powder, 15 to 20 parts of expanded graphite powder, 10 to 15 parts of calcium alginate, 8 to 12 parts of a nano gum powder, 8 to 12 parts of turpentine, and 6 to 10 parts of zeolite powder. According to a preparation method, native alum is taken as the main raw material, and the auxiliary materials such as modified gypsum powder are added, so that the obtained concrete and mortar expanding agent is low in alkalinity, high in expansion rate, and low in dry shrinkage rate, is capable of generating high swelling stress after doping into concrete or mortar so as to realize shrinkage compensation, and a safe expanding agent with excellent durability.
Description
Technical field:
The present invention relates to building material technical field, be specifically related to a kind of concrete and mortar expansion agent.
Background technology:
Concrete and mortar expansion agent be a kind of with cement, water mix after become large through hydration reaction to produce volume crystallization, thus cause concrete and mortar volume to expand, produce certain prestress, to help control concrete and Mortar shrinkage cracking.The main component of early expansion agent is gypsum, and for some time multiplex calcined kaolin, high green coal gangue, alunite, anhydrous calcium sulphoaluminate or calcium aluminate clinker and gypsum are prepared thereafter, but there is the problem that speed of expansion is slow, expansion energy is low.
Disclose a kind of high-performance cement expansive agent in patent CN102503210A, comprise anhydrous calcium sulphoaluminate, calcium sulfate and calcium oxide, its weight percent is 40-60:20-40:10-25.The rate of expansion of this swelling agent is higher, but the phase of expansion is short, and after using with concrete match ratio, effect is better early stage, and As time goes on the later stage can weaken gradually and even disappear, and is unfavorable for the long-term stability of strength of cement.
Summary of the invention:
Technical problem to be solved by this invention is to provide that a kind of rate of expansion is high, the phase of expansion long and the concrete of safety and environmental protection and mortar expansion agent.
Technical problem to be solved by this invention adopts following technical scheme to realize:
A kind of concrete and mortar expansion agent, be made up of the raw material of following parts by weight:
Native alum 90-100 part, modified landplaster 50-60 part, periclasite powder 35-45 part, expanded graphite powder 15-20 part, alginate calcium 10-15 part, nanometer rubber powder 8-12 part, turps 8-12 part, zeolite powder 6-10 part;
Its preparation method is as follows:
(1) native alum, modified landplaster, periclasite powder and zeolite powder are mixed rear feeding rotary kiln, at 1200-1500 DEG C, calcine 1-2h, then quenching in air, obtains expansive clinker;
(2) expansive clinker is mixed with expanded graphite powder, alginate calcium, then add in ball mill, be milled to granularity and be less than 30 μm, obtain mixed powder;
(3) in mixed powder, add nanometer rubber powder and turps, fully mix, be then placed in microwave treatment 5-10min under microwave frequency 2450MHz, power 600W, finally pack warehouse-in.
Described modified landplaster is made up of the raw material of following parts by weight: terra alba 70-80 part, carbon nano fiber 3-5 part, carboxymethyl cellulose 5-8 part, ethanol 90-100 part, its method of modifying is: be first scattered in ethanol by terra alba and carboxymethyl cellulose, carbon nano fiber is added after soaking 25-30min, mixture is supersound process 15-20min at ultrasonic frequency 40kHz, temperature 45-55 DEG C, after concentrating, drying, be ground into powder.
The invention has the beneficial effects as follows: the present invention take native alum as main raw material, and add the auxiliary materials such as modified landplaster, obtained swelling agent has the features such as alkalescence is low, rate of expansion is high, the phase of expansion is long, contract with dry rate is little, stronger expansion stress can be produced after mixing concrete or mortar, playing compensate for shrinkage effect, is the swelling agent that a kind of safety and durability is good.Wherein periclasite powder and adding of expanded graphite powder extend the phase of expansion, improve the later strength of swelling agent, nanometer rubber powder and terebinthinely add the synergy that improve between auxiliary material.
Embodiment:
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1
(1) 90 parts of native alums, 50 parts of modified landplasters, 35 parts of periclasite powder and 10 parts of zeolite powders are mixed rear feeding rotary kiln, at 1200-1500 DEG C, calcine 2h, then quenching in air, obtains expansive clinker;
(2) expansive clinker is mixed with 15 parts of expanded graphite powder, 10 parts of alginate calciums, then add in ball mill, be milled to granularity and be less than 30 μm, obtain mixed powder;
(3) in mixed powder, add 8 parts of nanometer rubber powders and 10 parts of turps, fully mix, be then placed in microwave treatment 10min under microwave frequency 2450MHz, power 600W, finally pack warehouse-in.
The preparation of modified landplaster: first 70 parts of terra albas and 6 parts of carboxymethyl celluloses are scattered in 90 parts of ethanol, 3 parts of carbon nano fibers are added after soaking 30min, mixture is supersound process 20min at ultrasonic frequency 40kHz, temperature 50-55 DEG C, after concentrating, drying, be ground into powder.
Embodiment 2
(1) 100 parts of native alums, 60 parts of modified landplasters, 40 parts of periclasite powder and 10 parts of zeolite powders are mixed rear feeding rotary kiln, at 1200-1500 DEG C, calcine 2h, then quenching in air, obtains expansive clinker;
(2) expansive clinker is mixed with 20 parts of expanded graphite powder, 15 parts of alginate calciums, then add in ball mill, be milled to granularity and be less than 30 μm, obtain mixed powder;
(3) in mixed powder, add 10 parts of nanometer rubber powders and 12 parts of turps, fully mix, be then placed in microwave treatment 10min under microwave frequency 2450MHz, power 600W, finally pack warehouse-in.
The preparation of modified landplaster: first 80 parts of terra albas and 8 parts of carboxymethyl celluloses are scattered in 100 parts of ethanol, 5 parts of carbon nano fibers are added after soaking 30min, mixture is supersound process 20min at ultrasonic frequency 40kHz, temperature 50-55 DEG C, after concentrating, drying, be ground into powder.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. concrete and a mortar expansion agent, is characterized in that, is made up of the raw material of following parts by weight:
Native alum 90-100 part, modified landplaster 50-60 part, periclasite powder 35-45 part, expanded graphite powder 15-20 part, alginate calcium 10-15 part, nanometer rubber powder 8-12 part, turps 8-12 part, zeolite powder 6-10 part;
Its preparation method is as follows:
(1) native alum, modified landplaster, periclasite powder and zeolite powder are mixed rear feeding rotary kiln, at 1200-1500 DEG C, calcine 1-2h, then quenching in air, obtains expansive clinker;
(2) expansive clinker is mixed with expanded graphite powder, alginate calcium, then add in ball mill, be milled to granularity and be less than 30 μm, obtain mixed powder;
(3) in mixed powder, add nanometer rubber powder and turps, fully mix, be then placed in microwave treatment 5-10min under microwave frequency 2450MHz, power 600W, finally pack warehouse-in.
2. concrete according to claim 1 and mortar expansion agent, it is characterized in that, described modified landplaster is made up of the raw material of following parts by weight: terra alba 70-80 part, carbon nano fiber 3-5 part, carboxymethyl cellulose 5-8 part, ethanol 90-100 part, its method of modifying is: be first scattered in ethanol by terra alba and carboxymethyl cellulose, carbon nano fiber is added after soaking 25-30min, mixture is supersound process 15-20min at ultrasonic frequency 40kHz, temperature 45-55 DEG C, after concentrating, drying, be ground into powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617196.3A CN105254203A (en) | 2015-09-24 | 2015-09-24 | Concrete and mortar expanding agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617196.3A CN105254203A (en) | 2015-09-24 | 2015-09-24 | Concrete and mortar expanding agent |
Publications (1)
| Publication Number | Publication Date |
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| CN105254203A true CN105254203A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510617196.3A Pending CN105254203A (en) | 2015-09-24 | 2015-09-24 | Concrete and mortar expanding agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162480A (en) * | 2017-07-12 | 2017-09-15 | 合肥雅克丽新型建材有限公司 | A kind of preparation method of modified concrete swelling agent |
| CN107188446A (en) * | 2017-06-27 | 2017-09-22 | 常州西夏墅东方工具有限公司 | A kind of cement expansive material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1357505A (en) * | 2001-11-10 | 2002-07-10 | 李乃珍 | Dispersing concrete sweller |
| CN102336533A (en) * | 2011-06-28 | 2012-02-01 | 金树青 | Alunite concrete expanding agent |
| CN102942323A (en) * | 2012-10-31 | 2013-02-27 | 遵义市恒新化工有限公司 | Low-alkaline concrete high-efficiency expanding agent |
| KR101431586B1 (en) * | 2012-07-23 | 2014-08-20 | 주식회사 윈플로 | Cement compositions of rapid expansion agent using industrial by-products |
-
2015
- 2015-09-24 CN CN201510617196.3A patent/CN105254203A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1357505A (en) * | 2001-11-10 | 2002-07-10 | 李乃珍 | Dispersing concrete sweller |
| CN102336533A (en) * | 2011-06-28 | 2012-02-01 | 金树青 | Alunite concrete expanding agent |
| KR101431586B1 (en) * | 2012-07-23 | 2014-08-20 | 주식회사 윈플로 | Cement compositions of rapid expansion agent using industrial by-products |
| CN102942323A (en) * | 2012-10-31 | 2013-02-27 | 遵义市恒新化工有限公司 | Low-alkaline concrete high-efficiency expanding agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107188446A (en) * | 2017-06-27 | 2017-09-22 | 常州西夏墅东方工具有限公司 | A kind of cement expansive material and preparation method thereof |
| CN107162480A (en) * | 2017-07-12 | 2017-09-15 | 合肥雅克丽新型建材有限公司 | A kind of preparation method of modified concrete swelling agent |
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Application publication date: 20160120 |
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| RJ01 | Rejection of invention patent application after publication |