CN105293988A - Modified admixture for cement-based pervious concrete and preparation method of modified admixture - Google Patents
Modified admixture for cement-based pervious concrete and preparation method of modified admixture Download PDFInfo
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- CN105293988A CN105293988A CN201510845635.6A CN201510845635A CN105293988A CN 105293988 A CN105293988 A CN 105293988A CN 201510845635 A CN201510845635 A CN 201510845635A CN 105293988 A CN105293988 A CN 105293988A
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Abstract
The invention discloses a modified admixture for cement-based pervious concrete and a preparation method of the modified admixture. The modified admixture comprises the following ingredients in parts by weight: 3 parts of industrial white sugar, 50 parts of hydroxymethyl cellulose, 5 parts of polyacrylamide, 3 parts of a triterpenoid saponin air entraining agent, 90 parts of an ether polycarboxylate superplasticizer and 849 parts of water. The preparation method comprises the following steps: weighing all ingredients in parts by weight and mixing all ingredients in a PP plastic container; leaving the mixture to stand for 20 minutes; stirring in a circulating manner for 20 minutes by using a circulating pump so as to obtain a modified admixture solution. The modified admixture for the cement-based pervious concrete has the benefits as follows: the modified admixture is formed through combination of organic macromolecular ingredients and ether water-reducing ingredients with slow release properties, so that the whole construction performance of pervious concrete is closer to that of asphalt concrete, meanwhile, aggregate joint and gap distribution properties are improved, and fine non-communication gaps are sealed, so that a communicating gap channel is optimized and preparation of middle-high strength pervious concrete is facilitated.
Description
Technical field
The present invention relates to a kind of cement based pervious concrete modified additive and preparation method thereof.
Background technology
The Normal practice of cement based pervious concrete adopts cement, natural aggregate, water, admixture (part adds mineral admixture) to join through examination to determine proportioning, paves after action of forced stirring.Produce pervious concrete material therefor substantially identical with the common ready mixed concrete material of production.Because the feature of normal concrete is " rich slurry system ", pervious concrete is " poor slurry system ", simultaneously, the two application direction and constructional method all have essential distinction, the performance requriements feature that must wrap up good, the happy discharging of property according to pervious concrete aggregate, easily pave, modification slurry performance just can make premixing produce, transports, construct and carry out smoothly, ensures construction quality.Along with cement based pervious concrete large-scale popularization at home, development is a kind of improves pervious concrete stability, and enable smooth batch production premixing, the comprehensively modifying admixture of conventional ready mixed concrete tank car enclosed conveying is extremely urgent.
Summary of the invention
The object of this invention is to provide a kind of cement based pervious concrete modified additive and preparation method thereof, slurry water sensitivity can be reduced, increase slurry stability and viscosity.
For realizing above-mentioned technical purpose, technical scheme of the present invention is achieved in that
A kind of cement based pervious concrete modified additive, comprises the batching of following parts by weight:
Industry white sugar 3 parts, Walocel MT 20.000PV 50 parts, polyacrylamide 5 parts, three-iron saponin air entrapment agent 3 parts, ethers polycarboxylic acid water reducing agent 90 parts and 849 parts, water.
The preparation method of cement based pervious concrete modified additive, comprises the steps:
1) take each batching of certainweight number, and mix in PP plastic containers;
2) 20 minutes are left standstill, then;
3) within 20 minutes, modified additive solution is made with recycle pump circulation stirring.
Beneficial effect of the present invention: the present invention utilizes organic macromolecule component to coordinate the ethers diminishing component with sustained release performance to make, pervious concrete integral construction performance can be made more to be close to bituminous concrete, simultaneously, improve aggregate node and space distribution performance, close tiny noninterconnected void, optimize connectivity gap passage, be beneficial to high-strength water-permeable concrete in preparation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of ordinary process cement based pervious concrete;
Fig. 2 is the structural representation that with the addition of cement based pervious concrete after properties-correcting agent.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
A kind of cement based pervious concrete modified additive according to embodiments of the invention, comprises the batching of following parts by weight:
Industry white sugar 3g, Walocel MT 20.000PV 50g, polyacrylamide 5g, three-iron saponin air entrapment agent 3g, ethers polycarboxylic acid water reducing agent 90g and water 849g.
This cement based pervious concrete modified additive is stored in sun-shading ventilating place, storage temperature range-5 ~ 45 DEG C.3 months quality guaranteed perioves.
The preparation method of above-mentioned cement based pervious concrete modified additive, comprises the steps:
1) each batching of above-mentioned parts by weight is taken, and in PP(polypropylene) mix in plastic containers;
2) 20 minutes are left standstill, then;
3) within 20 minutes, modified additive solution is made with recycle pump circulation stirring.
During concrete use, the consumption of the modified additive solution of recommendation is 2 ~ 3% of pervious concrete gelling material total mass, in the present embodiment, select the modified additive solution of 2% of pervious concrete gelling material total mass, this modified additive solution before use, must carry out pervious concrete and coordinate and have a competition and fit card.According to examination join trial mix pervious concrete aggregate bag slurry thickness, parcel property, protect time of moulding adjustment construction consumption determination coordination in works within the scope of recommendation volume.This modified additive directly substitutes conventional concrete high efficiency water reducing agent, adds action of forced stirring by stirring unit automatic gauge, and the operation that feeds intake and the common ready mixed concrete production sequence that feeds intake is identical.The concrete-agitating time is not less than 180 seconds.
Principle of the present invention: as shown in Figure 1-2, this modified additive adds in pervious concrete, through action of forced stirring 3 minutes, abundant dispersion, utilizes water-reduction and flocculation guarantor to mould effect, when pervious concrete slurry water-cement ratio can be made to increase 0.1, keep slurry stability, glutinousness and parcel suitable with first wife's composition and division in a proportion, and greatly reduce newly mix pervious concrete aggregate between rub, keep concrete mortar plasticity 1.5 hours, be beneficial to tank car transport.Meanwhile, the bonding node of aggregate is sturdy, and space water-permeable passage is smooth, is beneficial to permeable blowdown.
In sum, by means of technique scheme of the present invention, the present invention utilizes organic macromolecule component to coordinate the ethers diminishing component with sustained release performance to make, pervious concrete integral construction performance can be made more to be close to bituminous concrete, meanwhile, improve aggregate node and space distribution performance, close tiny noninterconnected void, optimize connectivity gap passage, be beneficial to high-strength water-permeable concrete in preparation.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a cement based pervious concrete modified additive, is characterized in that, comprises the batching of following parts by weight:
Industry white sugar 3 parts, Walocel MT 20.000PV 50 parts, polyacrylamide 5 parts, three-iron saponin air entrapment agent 3 parts, ethers polycarboxylic acid water reducing agent 90 parts and 849 parts, water.
2. the preparation method of cement based pervious concrete modified additive according to claim 1, is characterized in that, comprise the steps:
1) take each batching of certainweight number, and mix in PP plastic containers;
2) 20 minutes are left standstill, then;
3) within 20 minutes, modified additive solution is made with recycle pump circulation stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845635.6A CN105293988A (en) | 2015-11-26 | 2015-11-26 | Modified admixture for cement-based pervious concrete and preparation method of modified admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510845635.6A CN105293988A (en) | 2015-11-26 | 2015-11-26 | Modified admixture for cement-based pervious concrete and preparation method of modified admixture |
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| CN105293988A true CN105293988A (en) | 2016-02-03 |
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| CN201510845635.6A Pending CN105293988A (en) | 2015-11-26 | 2015-11-26 | Modified admixture for cement-based pervious concrete and preparation method of modified admixture |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186795A (en) * | 2016-07-08 | 2016-12-07 | 江苏苏博特新材料股份有限公司 | A kind of pervious concrete special additive and application thereof |
| CN106477962A (en) * | 2016-10-27 | 2017-03-08 | 重庆绿恒环保科技有限公司 | A kind of cement base pervious concrete additive |
| CN106746884A (en) * | 2016-12-21 | 2017-05-31 | 深圳市嘉达高科产业发展有限公司 | Pervious concrete reinforcing agent and preparation method thereof |
| CN109629377A (en) * | 2018-12-27 | 2019-04-16 | 江苏诚意工程技术研究院有限公司 | A kind of pervious concrete construction method |
| CN113772995A (en) * | 2021-10-27 | 2021-12-10 | 中铁建设集团建筑发展有限公司 | Modified additive for enhancing water permeability of concrete and preparation method thereof |
Citations (4)
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| JP2001181009A (en) * | 1999-12-24 | 2001-07-03 | Taiheiyo Cement Corp | Binder for water-permeable concrete pavement, and water-permeable concrete pavement concreted at site |
| JP2002362958A (en) * | 2001-06-05 | 2002-12-18 | Taiheiyo Cement Corp | Water-permeable concrete |
| CN102898062A (en) * | 2012-10-24 | 2013-01-30 | 中建商品混凝土成都有限公司 | Special compound additive for pebble-type permeable concrete |
| CN103466993A (en) * | 2013-09-29 | 2013-12-25 | 江苏名和集团有限公司 | Additive for pervious concrete and application thereof |
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2015
- 2015-11-26 CN CN201510845635.6A patent/CN105293988A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001181009A (en) * | 1999-12-24 | 2001-07-03 | Taiheiyo Cement Corp | Binder for water-permeable concrete pavement, and water-permeable concrete pavement concreted at site |
| JP2002362958A (en) * | 2001-06-05 | 2002-12-18 | Taiheiyo Cement Corp | Water-permeable concrete |
| CN102898062A (en) * | 2012-10-24 | 2013-01-30 | 中建商品混凝土成都有限公司 | Special compound additive for pebble-type permeable concrete |
| CN103466993A (en) * | 2013-09-29 | 2013-12-25 | 江苏名和集团有限公司 | Additive for pervious concrete and application thereof |
Non-Patent Citations (3)
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| 严捍东: "《新型建筑材料教程》", 31 January 2005 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186795A (en) * | 2016-07-08 | 2016-12-07 | 江苏苏博特新材料股份有限公司 | A kind of pervious concrete special additive and application thereof |
| CN106186795B (en) * | 2016-07-08 | 2018-07-20 | 江苏苏博特新材料股份有限公司 | A kind of pervious concrete special additive and its application |
| CN106477962A (en) * | 2016-10-27 | 2017-03-08 | 重庆绿恒环保科技有限公司 | A kind of cement base pervious concrete additive |
| CN106746884A (en) * | 2016-12-21 | 2017-05-31 | 深圳市嘉达高科产业发展有限公司 | Pervious concrete reinforcing agent and preparation method thereof |
| CN109629377A (en) * | 2018-12-27 | 2019-04-16 | 江苏诚意工程技术研究院有限公司 | A kind of pervious concrete construction method |
| CN113772995A (en) * | 2021-10-27 | 2021-12-10 | 中铁建设集团建筑发展有限公司 | Modified additive for enhancing water permeability of concrete and preparation method thereof |
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Application publication date: 20160203 |
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