CN102507376B - Method for rapidly evaluating separation degree of cement asphalt mortar - Google Patents
Method for rapidly evaluating separation degree of cement asphalt mortar Download PDFInfo
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- CN102507376B CN102507376B CN 201110343317 CN201110343317A CN102507376B CN 102507376 B CN102507376 B CN 102507376B CN 201110343317 CN201110343317 CN 201110343317 CN 201110343317 A CN201110343317 A CN 201110343317A CN 102507376 B CN102507376 B CN 102507376B
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- conductivity
- slurry
- mortar
- cement asphalt
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 50
- 239000004568 cement Substances 0.000 title claims abstract description 37
- 239000010426 asphalt Substances 0.000 title claims abstract description 35
- 238000000926 separation method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 44
- 238000005259 measurement Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 208000034189 Sclerosis Diseases 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a method for rapidly evaluating the separation degree of cement asphalt mortar. The method comprises the following steps of: (a) loading: pouring the cement asphalt mortar into a beaker, wherein the height of the mortar is 10 cm; (b) measuring conductivity of an upper layer: inserting an electrode of a conductivity meter into a cement asphalt mortar body in the beaker, keeping the electrode in the mortar body at the height over 5 cm, and reading the conductivity of an upper-layer mortar body; (c) measuring conductivity of a lower layer: moving the electrode down by 5 cm, keeping the electrode at the position, and reading the conductivity of a lower-layer mortar body; and (d) calculating the separation degree: calculating the conductivity difference between the lower-layer mortar body and the upper-layer mortar body, multiplying the conductivity difference by 1.43 to obtain the density difference between the lower-layer mortar body and the upper-layer mortar body, dividing the density difference by twice of the density of the mortar to obtain the separation degree of the cement asphalt mortar to be measured. According to the method, the separation degree ofthe mortar can be measured in real time before the cement asphalt mortar is hardened, and the construction quality can be better ensured, so that the rework of a project is avoided, the time limit for the project is reduced, the materials for the project are saved, and the cost of the project is lowered.
Description
Technical field
The present invention relates to a kind of cement asphalt mortar degree of separation evaluation method.
Background technology
At present, China begins to build on a large scale high-speed railway, and non-fragment orbit has become the main flow pattern of track.Cement asphalt mortar is plate-type ballastless track key function material, has the effects such as leveling, buffering, absorbing.The main raw material(s) of cement asphalt mortar is cement, emulsified asphalt, sand, water etc., and mortar product is the slurry with certain fluid ability, is metastable suspension system, generally adopts pouring construction.The cement asphalt mortar that mixes is owing to density between its component is different, and sedimentation easily occurs sand etc., and causes slurry to separate; The mortar that degree of separation exceeds standard can not be used for construction, if be used for construction, construction quality is difficult to guarantee.Therefore, must estimate the degree of separation of mortar.Present evaluation method mainly adopts measures the degree of separation that hardened paste levels density difference is estimated cement asphalt mortar, need during measurement that the cement asphalt mortar test block is sawed-off is two-layer about be, measure respectively quality and the volume of upper and lower layer mortar, by formula: degree of separation=(bottom density-top density) * 0.5/ top and the bottom average density * 100% calculates the degree of separation of mortar.The problem that this method exists is: owing to reasons such as the cement asphalt mortar section are rough, measuring error is larger; And because the object that the method is measured can only be the slurry after the sclerosis, and this moment, cement asphalt mortar was finished perfusion, was a kind of afterwards measurement, can not carry out timely degree of separation measurement to presclerotic slurry, often cause engineering to do over again, prolong the duration, the waste material strengthens engineering cost.
Summary of the invention
The object of the invention is to, a kind of cement asphalt mortar degree of separation fast appraisement method is provided, the method can be before the cement asphalt mortar sclerosis, Real-time Measuring goes out the degree of separation of mortar, with its guiding construction, can better guarantee construction quality, avoid engineering to do over again, reduce the duration, economical with materials, reduce project cost.
The present invention realizes its goal of the invention, and the technical scheme that adopts is that a kind of cement asphalt mortar degree of separation fast appraisement method the steps include:
A, material loading: the cement asphalt mortar that will newly mix is poured in the beaker, and making the cement asphalt mortar height in the beaker is 10cm, leaves standstill 10min;
The measurement of the conductivity on b, upper strata: the electrode of conductivity meter is inserted the cement asphalt mortar slurry of beaker, and with the electrode holder of conductivity meter, make electrode remain on height more than the 5cm of slurry, read out the conductivity of upper strata slurry;
The measurement of the conductivity of c, lower floor: the electrode holder that unclamps conductivity meter moves down 5cm with electrode, with electrode holder electrode is clamped to make it remain on this position again; Read out the conductivity of lower floor's slurry;
The calculating of d, degree of separation: the electric conductivity difference of calculating lower floor's slurry and upper strata slurry, and this electric conductivity difference be multiply by the density difference that conversion coefficient 1.43 obtains lower floor's slurry and upper strata slurry, with the slurry density of this density difference divided by 2 times, namely obtain the degree of separation of cement asphalt mortar to be measured again.
The principle of the inventive method is: because the hydrolysis of cement minerals causes slurry to have stronger conductive capability; In separative cement asphalt mortar, because the sedimentation of sand causes the liquid-solid ratio of levels slurry inconsistent, and therefore slurry will cause the levels conductivity inconsistent mainly by solution conductivity.Experimental study through the applicant is found: in two minutes, density difference between the levels slurry is 1.43 times of the two electric conductivity difference, thereby can calculate the density difference between the levels slurry and then obtain the degree of separation of slurry by the electric conductivity difference of measuring the levels slurry, and according to this to its qualified making an appraisal whether.
Compared with prior art, the invention has the beneficial effects as follows:
This method draws the degree of separation of slurry by the electric conductivity difference of slurry about measuring, before the slurry sclerosis, can be fast to the degree of separation of its slurry qualified making an appraisal whether, with guiding construction, can better guarantee construction quality, avoid engineering to do over again, reduce the duration, economical with materials, reduce project cost.
The support bar of the electrode holder of above-mentioned conductivity meter is provided with altitude scale.Like this, make in b, the c two steps operation, electrode inserts the definite more convenient of position and displacement, makes operation simpler.
The present invention is described in further detail below in conjunction with embodiment.
Embodiment
Embodiment
A kind of embodiment of the present invention is that a kind of cement asphalt mortar degree of separation fast appraisement method the steps include:
A, material loading: the cement asphalt mortar that will newly mix is poured in the beaker, and making the cement asphalt mortar height in the beaker is 10cm, leaves standstill 10min;
The measurement of the conductivity on b, upper strata: the electrode of conductivity meter is inserted the cement asphalt mortar slurry of beaker, and with the electrode holder of conductivity meter, make electrode remain on height more than the 5cm of slurry, read out the conductivity of upper strata slurry;
The measurement of the conductivity of c, lower floor: the electrode holder that unclamps conductivity meter moves down 5cm with electrode, with electrode holder electrode is clamped to make it remain on this position again; Read out the conductivity of lower floor's slurry;
The calculating of d, degree of separation: the electric conductivity difference of calculating lower floor's slurry and upper strata slurry, and this electric conductivity difference be multiply by the density difference that conversion coefficient 1.43 obtains lower floor's slurry and upper strata slurry, with the slurry density of this density difference divided by 2 times, namely obtain the degree of separation of cement asphalt mortar to be measured again.
The support bar of the electrode holder of the conductivity meter that this is routine is provided with altitude scale.
Claims (2)
1. a cement asphalt mortar degree of separation fast appraisement method the steps include:
A, material loading: the cement asphalt mortar that will newly mix is poured in the beaker, and making the cement asphalt mortar height in the beaker is 10cm, leaves standstill 10min;
The measurement of the conductivity on b, upper strata: the electrode of conductivity meter is inserted the cement asphalt mortar slurry of beaker, and with the electrode holder of conductivity meter, make electrode remain on height more than the 5cm of slurry, read out the conductivity of upper strata slurry;
The measurement of the conductivity of c, lower floor: the electrode holder that unclamps conductivity meter moves down 5cm with electrode, with electrode holder electrode is clamped to make it remain on this position again; In the conductivity that reads out the upper strata slurry 2 minutes, read out the conductivity of lower floor's slurry;
The calculation and evaluation of d, degree of separation: the electric conductivity difference of calculating lower floor's slurry and upper strata slurry, and this electric conductivity difference be multiply by the density difference that conversion coefficient 1.43 obtains lower floor's slurry and upper strata slurry, again with the slurry density of this density difference divided by 2 times, namely obtain the degree of separation of cement asphalt mortar to be measured, and according to the degree of separation that obtains to sand-cement slurry to be measured qualified making an appraisal whether.
2. a kind of cement asphalt mortar degree of separation fast appraisement method according to claim 1, it is characterized in that: the support bar of the electrode holder of described conductivity meter is provided with altitude scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110343317 CN102507376B (en) | 2011-11-03 | 2011-11-03 | Method for rapidly evaluating separation degree of cement asphalt mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110343317 CN102507376B (en) | 2011-11-03 | 2011-11-03 | Method for rapidly evaluating separation degree of cement asphalt mortar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102507376A CN102507376A (en) | 2012-06-20 |
| CN102507376B true CN102507376B (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110343317 Expired - Fee Related CN102507376B (en) | 2011-11-03 | 2011-11-03 | Method for rapidly evaluating separation degree of cement asphalt mortar |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645217B (en) * | 2013-12-26 | 2015-08-19 | 哈尔滨工业大学 | A kind of method of monitoring work progress medium pitch cement quality ratio and cement asphalt mortar gain in strength |
| CN105784543B (en) * | 2016-05-25 | 2018-03-23 | 王壹帆 | A kind of waste rubber tyre powder rubber asphalt isolation test and assessment method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100344A (en) * | 1986-01-21 | 1986-11-26 | 中国科学院环境化学所 | Conductance detecting pool |
| CN101172823A (en) * | 2007-09-30 | 2008-05-07 | 江苏博特新材料有限公司 | Rubber powder modified concrete asphalt mortar |
-
2011
- 2011-11-03 CN CN 201110343317 patent/CN102507376B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100344A (en) * | 1986-01-21 | 1986-11-26 | 中国科学院环境化学所 | Conductance detecting pool |
| CN101172823A (en) * | 2007-09-30 | 2008-05-07 | 江苏博特新材料有限公司 | Rubber powder modified concrete asphalt mortar |
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| Publication number | Publication date |
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| CN102507376A (en) | 2012-06-20 |
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Effective date of registration: 20180201 Address after: 637500 A, Nanchong, Nanchong, Sichuan, No. 7, seat No. 7 Patentee after: SICHUAN HAOLONG HIGH-TECH RAIL TRANSPORT NEW MATERIAL TECHNOLOGY CO.,LTD. Address before: 610031 Sichuan City, Chengdu Province, No. two North Ring Road, No. 111 Patentee before: Southwest Jiaotong University |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 |