CN104058695A - Gravity mortar for sound barrier quick filling and preparation method thereof - Google Patents
Gravity mortar for sound barrier quick filling and preparation method thereof Download PDFInfo
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- CN104058695A CN104058695A CN201410303554.9A CN201410303554A CN104058695A CN 104058695 A CN104058695 A CN 104058695A CN 201410303554 A CN201410303554 A CN 201410303554A CN 104058695 A CN104058695 A CN 104058695A
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Abstract
The invention discloses a preparation method of gravity mortar for sound barrier quick filling. The gravity mortar comprises 30-40 parts of Portland cement, 10-15 parts of sulfoaluminate cement, 45-55 parts of aggregate, 3-8 parts of silica fume, 0.5-1.0 part of early-strength admixture, 0.1-0.5 part of retarder and 0.1-0.5 part of water reducing agent. The initial flowability of the mortar mixed with water is greater than 360mm, and the flowability after 30 minutes is greater than 300mm; and the early strength is high, the strength of more than 20 MPa can be obtained within 1-2 hours, and the strength after 28 days exceeds 50 MPa. The filled mortar can satisfy the requirement of torsion addition within a short time without degradation of the later strength; the mortar is convenient and simple for construction, and can be used by mixing with water; the mortar can be constructed at sub-zero temperature; and the strength can continuously grow at sub-zero temperature to achieve the final service performance.
Description
Technical field
What the present invention relates to is a kind of structure material, in particular the preparation method of gravity mortar for a kind of sound barrier Fast Filling.
Background technology
Gravity mortar is the material of the adjustable superstrength of a kind of performance and high flowability, relies on the self gravitation mortar that filling requires with regard to meeting grouting voluntarily.There is fast, good flowing properties time of coagulation, early strength is high, anti-fatigue performance good, the features such as heat, convenient and quick construction defy severe cold.Can widespread use wind barrier base steel plate be installed by filling, the installation filling of sound barrier base steel plate and mast base steel plate installation filling etc.All actively launch at present the gravity mortar research and development of superstrength high flowability both at home and abroad, but still had following technological difficulties: 1, cannot obtain very high initial flow degree, cause constructional difficulties and cannot ensure the requirement of strength after construction; 2, cannot ensure later stage degree of mobilization retention value, construction operable time shortens greatly; 3, cannot obtain very high early strength and ensure that later strength continues to increase; 4, cannot be along with the variation of seasonal temperature has corresponding good adaptability.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the preparation method of a kind of sound barrier Fast Filling gravity mortar is provided, make that gravity mortar early strength is high, degree of mobilization is large.
The present invention is achieved by the following technical solutions, the present invention by weight, comprises 30～40 parts of Portland cements, 10～15 parts of aluminosulfate cements, 45～55 parts, aggregate, 3～8 parts of silicon ashes, 0.5～1.0 part of hardening accelerator, 0.1～0.5 part of retardant, 0.1～0.5 part of water reducer.
As one of optimal way of the present invention, described Portland cement is 52.5 grades of intensity and above ordinary Portland cement.
As one of optimal way of the present invention, the intensity of described aluminosulfate cement is more than 525 grades.
As one of optimal way of the present invention, described aggregate is the quartz sand that particle diameter is less than 1.18mm continuous grading.
As one of optimal way of the present invention, described hardening accelerator is that calcium formiate and SODIUMNITRATE make by weight 1:1 is composite.
As one of optimal way of the present invention, described retardant is that Sunmorl N 60S and borax make by weight 2:1 is composite.
Described fiber is polypropylene fibre, can form the netted support effect of three-dimensional random distribution in mortar, and the tiny crack that mortar was formed at the sclerosis initial stage is stopped in evolution, is difficult to further develop.Thereby can improve the fracture toughness property of mortar, improve the anti-crack and anti-seepage performance of mortar, be mortar, concrete works cracking resistance, antiseepage is wear-resisting, the new type ideal material of insulation.
The preparation method of gravity mortar for a kind of sound barrier Fast Filling, by described Portland cement, aluminosulfate cement, aggregate, silicon ash, hardening accelerator, retardant, these powder stirrings of water reducer evenly after, add the water of 0.14～0.16 times of powder weight, after mechanical stirrer fully stirs, can use.
Ordinary Portland cement is long as gravity packing material ubiquity time of coagulation, the not high defect of early strength, can not meet the requirement of filling completely.For this deficiency of ordinary Portland cement, employing time of coagulation, aluminosulfate cement fast, that early strength is high was composite with it, add on this basis the admixtures such as high efficiency water reducing agent to carry out modification to compound system, the filling characteristic of ordinary Portland cement is improved significantly, both improve mobility, taken into account preferably again time of coagulation and strength characteristics.Silicon ash is the unformed silicon oxide of high fineness, has higher pozzolanic activity, hydrolysis product of cement CH can be converted into CSH gel, promotes intensity and degree of compactness to improve, and accelerates hydration rate, improves early strength.Silicon ash has adjusting viscosity concurrently, improves cohesiveness, reduces bleeding, improves the functions such as impermeability, intensity and weather resistance.Calcium formiate and SODIUMNITRATE be as a kind of admixture, there is the hydrated cementitious of acceleration, avoid in the winter time or low temperature and moisture condition under the rate of set of constructing cross the problems such as slow, improve the performance of mortar strength, and can play certain minimizing effect.Sunmorl N 60S and borax have good delayed coagulation, and in addition, Sunmorl N 60S can effectively suppress chemical shrinkage, and aquation initial stage Sunmorl N 60S, due to absorption, complexing, the effect such as wetting, has accelerated C
3the dissolving of A, has promoted the generation of Alt, suppresses C simultaneously
3the aquation of S and the generation of CH, can effectively reduce hydration heat, delays the formation of structure.
The present invention has the following advantages compared to existing technology: after mortar blunge of the present invention, initial flow degree is greater than 360mm, and after 30min, degree of mobilization is greater than 300mm, and early strength is high, obtains the intensity that exceedes 20MPa in 1～2h, and 28d intensity exceedes 50MPa.After mortar injection, can complete the requirement that adds torsion within a short period of time, not retraction of later strength, easy construction, simple, add water and stir and can use, can under subzero temperature condition, construct, and under subzero temperature condition, intensity can sustainable growth, reaches final use properties.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
The gravity mortar of the present embodiment by weight, comprise that 30 parts of ordinary Portland cements, strength grade are greater than 52.5 grades, 12 parts of aluminosulfate cements, intensity are 525 grades, 40 parts of quartz sands, particle diameter are less than 1.18mm continuous grading, 5 parts of silicon ashes, 0.5 part of hardening accelerator, 0.1 part of retardant, 0.1 part of water reducer.
The hardening accelerator of the present embodiment is that calcium formiate and SODIUMNITRATE make by weight 1:1 is composite.The retardant of the present embodiment is that Sunmorl N 60S and borax make by weight 2:1 is composite.The water reducer of the present embodiment is polycarboxylic acids dehydragent.
After powder stirring is even, add the water of 0.14 times of powder weight, after mechanical stirrer fully stirs, can use.
Embodiment 2
The gravity mortar of the present embodiment by weight, comprise that 40 parts of ordinary Portland cements, strength grade are greater than 52.5 grades, 15 parts of aluminosulfate cements, intensity are 525 grades, 55 parts of quartz sands, particle diameter are less than 1.18mm continuous grading, 8 parts of silicon ashes, 1.0 parts of hardening accelerator, 0.5 part of retardant, 0.5 part of water reducer.
The hardening accelerator of the present embodiment is that calcium formiate and SODIUMNITRATE make by weight 1:1 is composite.The retardant of the present embodiment is that Sunmorl N 60S and borax make by weight 2:1 is composite.The water reducer of the present embodiment is polycarboxylic acids dehydragent.
After powder stirring is even, add the water of 0.16 times of powder weight, after mechanical stirrer fully stirs, can use.
Embodiment 3
The gravity mortar of the present embodiment by weight, comprise that 35 parts of ordinary Portland cements, strength grade are greater than 52.5 grades, 13 parts of aluminosulfate cements, intensity are 525 grades, 50 parts of quartz sands, particle diameter are less than 1.18mm continuous grading, 3 parts of silicon ashes, 0.75 part of hardening accelerator, 0.4 part of retardant, 0.3 part of water reducer.
The hardening accelerator of the present embodiment is that calcium formiate and SODIUMNITRATE make by weight 1:1 is composite.The retardant of the present embodiment is that Sunmorl N 60S and borax make by weight 2:1 is composite.The water reducer of the present embodiment is polycarboxylic acids dehydragent.
After powder stirring is even, add the water of 0.15 times of powder weight, after mechanical stirrer fully stirs, can use.
After the gravity mortar blunge that embodiment 1～3 makes, initial flow degree is greater than 360mm, and after 30min, degree of mobilization is greater than 300mm, and early strength is high, obtains the intensity that exceedes 20MPa in 1～2h, and 28d intensity exceedes 50MPa.
Claims (9)
1. a sound barrier Fast Filling gravity mortar, it is characterized in that, by weight, comprise 30～40 parts of Portland cements, 10～15 parts of aluminosulfate cements, 45～55 parts, aggregate, 3～8 parts of silicon ashes, 0.5～1.0 part of hardening accelerator, 0.1～0.5 part of retardant, 0.1～0.5 part of water reducer, 1～2 part of fiber.
2. a kind of sound barrier Fast Filling gravity mortar according to claim 1, is characterized in that, described Portland cement is 52.5 grades of intensity and above ordinary Portland cement.
3. a kind of sound barrier Fast Filling gravity mortar according to claim 1, is characterized in that, the intensity of described aluminosulfate cement is more than 525 grades.
4. a kind of sound barrier Fast Filling gravity mortar according to claim 1, is characterized in that, described aggregate is the quartz sand that particle diameter is less than 1.18mm continuous grading.
5. a kind of sound barrier Fast Filling gravity mortar according to claim 1, is characterized in that, described hardening accelerator is that calcium formiate and SODIUMNITRATE make by weight 1:1 is composite.
6. a kind of sound barrier Fast Filling gravity mortar according to claim 1, is characterized in that, described retardant is that Sunmorl N 60S and borax make by weight 2:1 is composite.
7. a kind of sound barrier Fast Filling gravity mortar according to claim 1, is characterized in that, described water reducer is polycarboxylic acids dehydragent.
8. a kind of sound barrier Fast Filling gravity mortar according to claim 1, is characterized in that, described fiber is polypropylene fibre.
9. the preparation method of gravity mortar for a kind of sound barrier Fast Filling as claimed in claim 1, it is characterized in that, by described Portland cement, aluminosulfate cement, aggregate, silicon ash, hardening accelerator, retardant, these powder stirrings of water reducer evenly after, add the water of 0.14～0.16 times of powder weight, after mechanical stirrer fully stirs, can use.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198345A (en) * | 2015-09-07 | 2015-12-30 | 安徽鑫润新型材料有限公司 | High-abrasion-resistance insulation mortar |
| CN105948651A (en) * | 2016-05-09 | 2016-09-21 | 河南省交通科学技术研究院有限公司 | High strength polymer cement mortar with self-curing function |
| CZ306663B6 (en) * | 2015-09-01 | 2017-04-26 | České vysoké učenà technické v Praze, Fakulta stavebnà | A dry prefabricated mixture of a multifunctional silicate composite |
| CN107651923A (en) * | 2016-07-25 | 2018-02-02 | 二十二设计有限公司 | The manufacture method of cement mortar product |
| CN111960776A (en) * | 2020-08-28 | 2020-11-20 | 南京好声音环保工程有限公司 | Special gravity mortar for sound barrier foundation |
| CN112010610A (en) * | 2020-08-31 | 2020-12-01 | 江苏博思通新材料有限公司 | Preparation method of gravity mortar for high-flow-state super-early-strength sound barrier |
| CN112723841A (en) * | 2021-02-08 | 2021-04-30 | 北京金隅砂浆有限公司 | Anti-crack plastering mortar |
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| JP2008162838A (en) * | 2006-12-27 | 2008-07-17 | Taiheiyo Material Kk | Polymer cement mortar for floor |
| CN101457562A (en) * | 2008-12-31 | 2009-06-17 | 王本淼 | Light component for cast-in-situ hollow floor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ306663B6 (en) * | 2015-09-01 | 2017-04-26 | České vysoké učenà technické v Praze, Fakulta stavebnà | A dry prefabricated mixture of a multifunctional silicate composite |
| CN105198345A (en) * | 2015-09-07 | 2015-12-30 | 安徽鑫润新型材料有限公司 | High-abrasion-resistance insulation mortar |
| CN105948651A (en) * | 2016-05-09 | 2016-09-21 | 河南省交通科学技术研究院有限公司 | High strength polymer cement mortar with self-curing function |
| CN107651923A (en) * | 2016-07-25 | 2018-02-02 | 二十二设计有限公司 | The manufacture method of cement mortar product |
| CN111960776A (en) * | 2020-08-28 | 2020-11-20 | 南京好声音环保工程有限公司 | Special gravity mortar for sound barrier foundation |
| CN112010610A (en) * | 2020-08-31 | 2020-12-01 | 江苏博思通新材料有限公司 | Preparation method of gravity mortar for high-flow-state super-early-strength sound barrier |
| CN112723841A (en) * | 2021-02-08 | 2021-04-30 | 北京金隅砂浆有限公司 | Anti-crack plastering mortar |
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| CN104058695B (en) | 2016-06-29 |
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