CN102336547A - Cement asphalt mortar with high elastic damping - Google Patents
Cement asphalt mortar with high elastic damping Download PDFInfo
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- CN102336547A CN102336547A CN2011101770626A CN201110177062A CN102336547A CN 102336547 A CN102336547 A CN 102336547A CN 2011101770626 A CN2011101770626 A CN 2011101770626A CN 201110177062 A CN201110177062 A CN 201110177062A CN 102336547 A CN102336547 A CN 102336547A
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Abstract
The invention provides a cement asphalt mortar. The cement asphalt mortar comprises cement, an expanding agent, sand, emulsified bitumen, water, a water reducer, an antifoaming agent, aluminum powder and rubber powder; The mass part ratio of cement to expanding agent to sand to emulsified bitumen to water to water reducer to antifoaming agent to aluminum powder to rubber powder is 90: (5-15): (100-180): (25-45): (15-30): (0.1-1.5): (0.01-0.15): (0.001-0.02): (1-20). According to the invention, rubber powder recovered by old tire can replace of partial emulsified bitumen or sand, under the condition of keeping certain intensity, the rubber powder has better damping performance than that of asphalt, simultaneously the rubber powder has low temperature sensitivity and is capable of keeping good damping performance under the various temperature; the adopted polypropylene fiber is capable of improving the uniformity of a cement asphalt mortar mixture, substantially raising the workability of the cement asphalt mortar mixture and enhancing the crack resistance and volume stability of the mortar.
Description
Technical field
The present invention relates to a kind of cement asphalt mortar of snappiness damping, be suitable for inter-city high-speed rail, city high speed light rail and city underground and use.
Background technology
One Chinese patent application 200710149995.8, one Chinese patent application 200710078508.3 and one Chinese patent application 200710078480.3 disclose a kind of emulsified bitumen respectively; It all is to adopt cationic emulsifier and the compound of nonionic emulsifying agent to prepare emulsified bitumen as emulsifying agent; The part emulsified bitumen has carried out practical application, and is respond well.But above-mentioned emulsified bitumen is to be used in the cell board non-fragment orbit cement emulsified asphalt mortar, and inapplicable for vertical connected plate type unballasted track cement emulsified bituminous mortar.
Chinese patent 200910076818.0 discloses a kind of emulsified bitumen, is used for vertical linking-board type non-fragment orbit.But, the high and low temperature poor stability of its emulsified bitumen, the early strength of cement emulsified asphalt mortar is lower, on the stability of cement emulsified asphalt mortar and high low temperature workability, has much room for improvement.
Summary of the invention
The purpose of this invention is to provide a kind of snappiness damping, cement asphalt mortar that workability is good.
Cement asphalt mortar provided by the invention comprises cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder and rubber powder; The ratio of quality and the number of copies of said cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder and rubber powder is 90: (5-15): (100-180): (25-45): (15-30): (0.1-1.5): (0.01-0.15): (0.001-0.02): (1-20).
In the above-mentioned cement asphalt mortar, the granularity of said rubber powder is 30 orders～200 orders; The waste Crumb rubber that reclaims for old tire gets final product.
In the above-mentioned cement asphalt mortar, said cement can be silicate cement; Specifically can be P I 42.5 cement, P I 52.5 cement, PII42.5 cement, PII52.5 cement, PO 42.5 cement or PO 52.5 cement; Said swelling agent can be the UEA swelling agent.
In the above-mentioned cement asphalt mortar, said sand can be common thin river sand; The fineness modulus of said sand can be 1.4-1.8; Said emulsified bitumen can be and splits the type anionic emulsified bitumen slowly, is applicable to vertical connected plate type unballasted track cement emulsified bituminous mortar.
In the above-mentioned cement asphalt mortar, said water reducer can be polycarboxylate dehydragent; Said skimmer is the organic silicon modified by polyether skimmer, like the new and effective skimmer of DXP-008.
In the above-mentioned cement asphalt mortar, the granularity of said aluminium powder is 200 orders-250 orders.
In the above-mentioned cement asphalt mortar, said mortar also can comprise polypropylene fibre; The ratio of quality and the number of copies of said polypropylene fibre and cement can be (0.1-2.0): 90, specifically can be 1.0: 90,1.5: 90 or 2.0: 90.
Above-mentioned cement asphalt mortar is made up of cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre; The ratio of quality and the number of copies of said cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre can be 90: (5-15): (100-180): (25-45): (15-30): (0.1-1.5): (0.01-0.15): (0.001-0.02): (1-20): (0.1-2.0).
In the above-mentioned cement asphalt mortar, the ratio of quality and the number of copies of said cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre specifically can be 90: 10: 132: 37: 19: 1.0: 0.07: 0.005: 3: 1.5,90: 10: 180: 45: 15: 1.5: 0.07: 0.005: 1.0: 1.0,90: 10: 124: 37: 20: 1.5: 0.07: 0.005: 6: 1.0 or 90: 10: 108: 25: 10: 1.5: 0.07: 0.005: 12:2.
In the above-mentioned cement asphalt mortar, the length of said polypropylene fibre can be 6mm.
Above-mentioned cement asphalt mortar provided by the invention can prepare according to the method that comprises following step:
A, preparation siccative: according to the mix capacity of the stirrer that uses, prepare said cement, swelling agent, sand, polypropylene fibre, rubber powder and aluminium powder, stir through stirrer and make the dry mash that mixes according to said quality proportioning;
B, preparation cement asphalt mortar: according to the mix capacity of the stirrer that uses and the mix amount of actual needs; Add said emulsified bitumen, water, water reducer and skimmer according to said quality proportioning, the dry mash that drops into above-mentioned quality proportioning after stirring again is stirred to uniform mixing and promptly gets said cement tar sand mortar.
Wherein, the mixing speed among the step a of aforesaid method can be 80r/min～120r/min, and churning time can be 5min～6min; After adding said emulsified bitumen, water, water reducer and skimmer among the aforesaid method step b, mixing speed can be 60r/min～80r/min, and churning time can be 30s; Add pre-assigned said dry mash then, mixing speed can be 60r/min～80r/min, and churning time can be 60s～90s; Changing mixing speed then is 110r/min～120r/min; Churning time is 150s～200s, and changing mixing speed at last is 40r/min～60r/min, and churning time is 60s～90s.
The present invention adopts prewired solid-state siccative powder, joins the preparation method who stirs in the liquid material that mixes again, in whole process, only needs a gap to feed intake, and goes to control each item performance of mixture through change mixing speed and time.Because the process that feeds intake is simple; Be not vulnerable to bring the cement asphalt mortar Effect on Performance because of gap repeatedly feeds intake; As the distribution that drops into the water yield in each in the process in stage can have influence on the mortar air content what and mobile, the cement asphalt mortar performance that makes this preparation method produce is more stable.
The rubber powder that the present invention adopts old tire to reclaim substitutes part emulsified bitumen or sand; Rubber powder is keeping having better damping capacity with respect to pitch under the certain situation of intensity; The temperature sensitivity of rubber powder is low simultaneously, under all temps, all can keep good damping performance; Mix polypropylene fibre simultaneously, not only improved the homogeneity of cement asphalt mortar mixture, improved the workability of cement asphalt mortar mixture greatly, also improved the resistance to cleavage and the volume stability of mortar.
Embodiment
Employed experimental technique is ordinary method like no specified otherwise among the following embodiment.
Used material, reagent etc. like no specified otherwise, all can obtain from commercial sources among the following embodiment.
Used swelling agent is the UEA swelling agent in following embodiment of the present invention and the Comparative Examples; Slowly splitting the type anionic emulsified bitumen is that ER type negatively charged ion splits the type emulsified bitumen slowly; Polycarboxylate dehydragent is the UNF-5AST polycarboxylate dehydragent; Silicone antifoam agent is the new and effective skimmer of DXP-008; The length of polypropylene fibre is 6mm; The granularity of aluminium powder is 200 orders-250 orders.
The preparation of embodiment 1, cement asphalt mortar
(1) preparation of dry mash: P I 42.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4), aluminium powder (200 order) and rubber powder (granularity is 30 orders) mixed and stir obtaining dry mash; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand, aluminium powder and rubber powder is 90: 10: 132: 0.005: 3;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate dehydragent and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder and rubber powder is 90: 10: 132: 37: 19: 1.0: 0.07: 0.005: 3.
The Specifeca tion speeification of the cement asphalt mortar of present embodiment preparation is as shown in table 1.
The preparation of embodiment 2, cement asphalt mortar
(1) preparation of dry mash: P I 52.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4), aluminium powder (200 order), rubber powder (granularity is 200 orders) and polypropylene fibre mixed and stir obtaining dry mash; Wherein, the ratio of quality and the number of copies of P I 52.5 cement, UEA swelling agent, river sand, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 132: 0.005: 3: 1.5;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate dehydragent and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of P I 52.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 132: 37: 19: 1.0: 0.07: 0.005: 3: 1.5.
The Specifeca tion speeification of the cement asphalt mortar of present embodiment preparation is as shown in table 1.
The preparation of embodiment 3, cement asphalt mortar
(1) preparation of dry mash: PII42.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4), aluminium powder (200 order), rubber powder (granularity is 150 orders) and polypropylene fibre mixed and stir obtaining dry mash; Wherein, the ratio of quality and the number of copies of PII 42.5 cement, UEA swelling agent, river sand, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 180: 0.01: 1: 1;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate dehydragent and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of PII 42.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 180: 45: 15: 1.5: 0.07: 0.01: 1: 1.
The Specifeca tion speeification of the cement asphalt mortar of present embodiment preparation is as shown in table 1.
The preparation of embodiment 4, cement asphalt mortar
(1) preparation of dry mash: PII52.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4), aluminium powder (200 order), rubber powder (granularity is 200 orders) and polypropylene fibre mixed and stir obtaining dry mash; Wherein, the ratio of quality and the number of copies of PII 52.5 cement, UEA swelling agent, river sand, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 124: 0.005: 6: 1;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate dehydragent and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of PII 52.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 124: 37: 20: 1.5: 0.07: 0.005: 6: 1.
The Specifeca tion speeification of the cement asphalt mortar of present embodiment preparation is as shown in table 1.
The preparation of embodiment 5, cement asphalt mortar
(1) preparation of dry mash: PO 42.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4), aluminium powder (200 order), rubber powder (granularity is 200 orders) and polypropylene fibre mixed and stir obtaining dry mash; Wherein, the ratio of quality and the number of copies of PO 42.5 cement, UEA swelling agent, river sand, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 108: 0.005: 12: 2;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate dehydragent and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of PO 42.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre is 90: 10: 108: 25: 30: 1.5: 0.07: 0.005: 12: 2.
The Specifeca tion speeification of the cement asphalt mortar of present embodiment preparation is as shown in table 1.
The preparation of Comparative Examples 1, cement asphalt mortar
(1) preparation of dry mash: P I 42.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4) and aluminium powder (200 order) mixed and stir obtaining dry mash; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand and aluminium powder is 90: 10: 140: 0.005;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate dehydragent and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer and aluminium powder is 90: 10: 140: 35: 20: 1.0: 0.07: 0.005.
The Specifeca tion speeification of the cement asphalt mortar of this Comparative Examples preparation is as shown in table 1.
The preparation of Comparative Examples 2, cement asphalt mortar
(1) preparation of dry mash: P I 42.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4) and aluminium powder (200 order) mixed and stir obtaining dry mash; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand and aluminium powder is 90: 10: 140: 0.005;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate water-reducer and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer and aluminium powder is 90: 10: 140: 37: 19: 1.0: 0.07: 0.005.
The Specifeca tion speeification of the cement asphalt mortar of this Comparative Examples preparation is as shown in table 1.
The preparation of Comparative Examples 3, cement asphalt mortar
(1) preparation of dry mash: with P I 42.5 cement, UEA swelling agent, river sand (fineness modulus is 1.4) and
Aluminium powder (200 order) mixes and stirs and obtains dry mash; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand and aluminium powder is 90: 10: 140: 0.005;
(2) preparation of cement asphalt mortar: will split type anionic emulsified bitumen, water, polycarboxylate water-reducer and silicone antifoam agent slowly and mix and stir and obtain liquid mixture, in the dry mash that the step on this liquid mixture input is obtained and stir and promptly obtain cement asphalt mortar; Wherein, the ratio of quality and the number of copies of P I 42.5 cement, UEA swelling agent, river sand, emulsified bitumen, water, water reducer, skimmer and aluminium powder is 90: 10: 140: 40: 18: 1.0: 0.07: 0.005.
The Specifeca tion speeification of the cement asphalt mortar of this Comparative Examples preparation is as shown in table 1.
The salient features of table 1 embodiment 1-5 and Comparative Examples 1-3 cement asphalt mortar
Performance perameter in the above-mentioned table 1 is to measure according to the TP in " the provisional technical qualification of traveller's special line railway CRTS I type plate type unballasted track cement emulsified bitumen mortar ".
From table 1, can find out: mix rubber powder can improve cement asphalt mortar under the situation that does not influence ultimate compression strength elasticity (Young's modulus reduction, elasticity increase), promptly damping capacity increases; After adding polypropylene fibre; The degree of mobilization of cement asphalt mortar does not have much variations but divergence diminishes; The cohesiveness that cement asphalt mortar is described is improved; Add simultaneously that the material sepd degree of cement asphalt mortar reduces significantly behind the polypropylene fibre, improved the uniformity of cement asphalt mortar greatly; The rate of expansion of 24h also increases, and explains that the anti-contracility of cement asphalt mortar makes moderate progress.
Claims (9)
1. a cement asphalt mortar comprises cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder and rubber powder; The ratio of quality and the number of copies of said cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder and rubber powder is 90: (5-15): (100-180): (25-45): (15-30): (0.1-1.5): (0.01-0.15): (0.001-0.02): (1-20).
2. mortar according to claim 1 is characterized in that: said rubber powder granularity is 30 orders-200 orders.
3. mortar according to claim 1 and 2 is characterized in that: said cement is silicate cement; Said swelling agent is the UEA swelling agent.
4. according to arbitrary described mortar among the claim 1-3, it is characterized in that: said sand is river sand; The fineness modulus of said sand is 1.4-1.8; Said emulsified bitumen is for split the type anionic emulsified bitumen slowly.
5. according to arbitrary described mortar among the claim 1-4, it is characterized in that: said water reducer is a polycarboxylate dehydragent; Said skimmer is a silicone antifoam agent.
6. according to arbitrary described mortar among the claim 1-5, it is characterized in that: the granularity of said aluminium powder is 200 orders-250 orders.
7. according to arbitrary described mortar among the claim 1-6, it is characterized in that: said mortar also comprises polypropylene fibre; The ratio of quality and the number of copies of said polypropylene fibre and cement is (0.1-2.0): 90.
8. mortar according to claim 7 is characterized in that: said mortar is made up of cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre; The ratio of quality and the number of copies of said cement, swelling agent, sand, emulsified bitumen, water, water reducer, skimmer, aluminium powder, rubber powder and polypropylene fibre is 90: (5-15): (100-180): (25-45): (15-30): (0.0-1.5): (0.01-0.15): (0.001-0.02): (1-20): (0.1-2.0).
9. according to claim 7 or 8 described mortars, it is characterized in that: the length of said polypropylene fibre is 6mm.
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| CN103693934A (en) * | 2013-12-07 | 2014-04-02 | 马鞍山市金韩防水保温工程有限责任公司 | Thermal mortar for building field |
| CN105130285A (en) * | 2015-07-03 | 2015-12-09 | 大连科诺拓金科技股份有限公司 | Microstress fiber mortar mixture applied to exterior-wall surface |
| CN106587842A (en) * | 2016-12-16 | 2017-04-26 | 江苏道润工程技术有限公司 | Semi-flexible pavement material, preparation method therefor and semi-flexible pavement |
| CN107082600A (en) * | 2017-03-14 | 2017-08-22 | 中国十七冶集团有限公司 | A kind of new high-damping buffering tar sand material and preparation method |
| CN108689624A (en) * | 2018-07-06 | 2018-10-23 | 佛山陵朝新材料有限公司 | A kind of high mating type discards the preparation method of rubber powder composite mortar material |
| CN108751871A (en) * | 2018-07-26 | 2018-11-06 | 成都理工大学 | A kind of modified cement-based grouting material of waste Crumb rubber |
| CN108755325A (en) * | 2018-05-25 | 2018-11-06 | 长安大学 | A kind of cold area's assembled road and its construction method |
| CN110041827A (en) * | 2019-05-07 | 2019-07-23 | 内蒙古煤矿设计研究院有限责任公司 | A kind of water proof anti-corrosive paint that can be used for coal transporting trestle leakage and repair |
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| CN108689624A (en) * | 2018-07-06 | 2018-10-23 | 佛山陵朝新材料有限公司 | A kind of high mating type discards the preparation method of rubber powder composite mortar material |
| CN108751871A (en) * | 2018-07-26 | 2018-11-06 | 成都理工大学 | A kind of modified cement-based grouting material of waste Crumb rubber |
| CN110041827A (en) * | 2019-05-07 | 2019-07-23 | 内蒙古煤矿设计研究院有限责任公司 | A kind of water proof anti-corrosive paint that can be used for coal transporting trestle leakage and repair |
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