CN202119687U - Testing device for testing anti-flushing and abrasion-resistant performance of hydraulic concrete - Google Patents
Testing device for testing anti-flushing and abrasion-resistant performance of hydraulic concrete Download PDFInfo
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- CN202119687U CN202119687U CN2011202102463U CN201120210246U CN202119687U CN 202119687 U CN202119687 U CN 202119687U CN 2011202102463 U CN2011202102463 U CN 2011202102463U CN 201120210246 U CN201120210246 U CN 201120210246U CN 202119687 U CN202119687 U CN 202119687U
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Abstract
The utility model discloses a testing device for testing anti-flushing and abrasion-resistant performance of hydraulic concrete, which belongs to the technical field of building material performance tests and comprises a steel barrel, a blending propeller, an adjusting valve and a high-pressure water pump. A steel support is installed in the steel barrel, and a detachable barrel cover is arranged at the upper portion of the steel barrel. The blending propeller is located in the steel barrel, and the upper portion of the blending propeller is driven by a motor device. A conviction section valve and the high-pressure water pump are connected with the steel barrel through conduits. Concrete testing blocks to be tested are arranged on the steel support. During testing, formed standard testing blocks after being soaked are arranged in the device, mixture of standard sand and water is added in, the volume ratio of the sand and the water is 1:5, and the device is opened. Wear rate of the concrete testing blocks after 24 hour's continuous flushing and abrasion serves as index which reflects the anti-flushing and abrasion-resistant performance of the concrete. The testing device for the testing anti-flushing and abrasion-resistant performance of the hydraulic concrete has the advantages of being accurate in simulation, simple in device, convenient to operate, short in testing time and the like.
Description
Technical field
The utility model belongs to the building materials technical field of performance test, is specifically related to a kind of test unit of testing water conservancy project concrete anti-abrasion performance.
Background technology
Concrete relies on its excellent performance, becomes the building materials of widespread use in modern society's construction.Because concrete is easy to machine-shaping, the shape and size that can meet design requirement; And its adjustable is strong, good endurance, and maintenance cost is few.Concrete is topmost building materials in water conservancy project construction and coastland construction, like bridge pier, dam and various coastal buildings.Yet physical environment is complicated, and problems have in use appearred in concrete, and wherein erosive wear is one of modal disease of hydraulic structure.High-velocity flow and solid suspended particle wherein produce percussive action when flowing through concrete surface, can cause the erosive wear of concrete surface to destroy.Facts have proved that concrete rate of wear mainly receives the influence of water velocity and current sand factor.
At present, under laboratory condition, simulating concrete for hydraulic structure fully is very difficult towards galling bad.Introduced following three kinds of methods in the concrete for hydraulic structure testing regulations of China (DL/T 5150-2001):
(1) concrete resists and contains sand current scour test (ring method); Concrete annular sample is fixed on the test unit; Drive water and sand high speed rotating in the sample ring by the motor impeller, the sample inboard is worn, estimate concrete anti-impact mill performance with the mass loss of sample;
(2) concrete anti-abrasion test (steel ball method under water); The moulding concrete sample is placed the steel drum bottom; Simultaneously steel ball and water are put into bucket, utilize paddle to drive the current flow at high speed, steel ball moves together under water simultaneously; The wearing and tearing concrete sample is surperficial, estimates the relative abrasion resistance of concrete surface with the relative weight loss of sample;
(3) concrete anti-abrasion test (wind sand marksmanship); Use air compressor pressurized air; As power, the sand in the sanding device is sprayed impact wear concrete sample surface at a high speed through nozzle and shower nozzle with it; After necessarily circulating, to estimate the concrete anti-abrasion performance towards the sand using amount of mill with towards the attrition rate.
In these methods, ring method equipment is simple, easy operating, and test speed is fast, but it concretely receives towards mill mode and actual condition inconsistently, and test findings is difficult to reflect concrete anti-impact mill performance in the actual engineering; Steel ball method method is simple under water, and device operability is strong, but its test period is long, and small ball is difficult to real simulation river sand, extra large sand, lacks enough cogencyes; Wind sand marksmanship is easy to various parameters in the control test, and equipment cost is low, but it needs often to change shower nozzle, and sand speed has big gap with wind speed.
This shows that the test unit of a kind of new test water conservancy project concrete anti-abrasion performance of utility model can reflect the working condition of concrete for hydraulic structure more realistically, is very significant for test concrete anti-abrasion performance.
The utility model content
The purpose of the utility model is the deficiency to prior art; Actual conditions according to the concrete for hydraulic structure facility receives to dash mill in conjunction with the limitation of laboratory examination, propose test unit and test method that a kind of new lab investigation concrete for hydraulic structure anti-impact is ground performance; It has simulation accurately; Equipment is simple, and is easy to operate, the effect that the test duration is short.
For realizing above-mentioned purpose, the solution of the utility model is:
A kind of test unit of testing water conservancy project concrete anti-abrasion performance, wherein: this device includes a steel drum, a paddle, control valve and high-pressure hydraulic pump, and steel bracket is equipped with in steel drum inside, and detachable bung is arranged at top; Paddle is arranged in steel drum, and its top is driven by electric machine; And the joint valve of deciding a law case is connected with steel drum through conduit with high-pressure hydraulic pump; Concrete test block to be measured places on the steel bracket.
Said steel drum is of a size of long 450mm, wide 250mm, and high 450mm, the steel bracket that be equipped with its inside is high to be 250mm.
Said paddle is of a size of 100mm ' 100mm ' 100mm, 150mm at the bottom of the end distance steel drum bucket under it.
Described electric machine is paddle and reach 400r/min speed rotation fixedly.
After adopting such scheme, the utility model has the advantages that: the test test block is 150mm ' 150mm ' 150mm reference block, and common laboratory all has this kind mould, convenient formation; Adopt the potpourri of normal sand and water concrete test block to be dashed mill, can effectively simulate the concrete working environment of water conservancy project, use paddle that potpourri is constantly stirred simultaneously, prevent that sand from sinking in water as the wearing and tearing agent; Whole device is the circulation system, need not operation bidirectional, labor and material saving after the unlatching; Can pass through control valve, the control flow velocity can be simulated multiple environment between 20-40m/s.Advantages such as in a word, the device of the utility model has simulation accurately, and equipment is simple, and is easy to operate, and the test duration is short.
Description of drawings
Fig. 1 is the test unit synoptic diagram of the test water conservancy project concrete anti-abrasion performance of the utility model.
Wherein:
1 be steel drum, 2 for conduit, 3 for high-pressure hydraulic pump, 4 for control valve,
5 be paddle, 6 for steel bracket, 7 for concrete test block to be measured,
8 is the potpourri (wearing and tearing agent) of normal sand and water.
Embodiment
Below in conjunction with embodiment the utility model is specified, the test unit of the test water conservancy project concrete anti-abrasion performance of the utility model is as shown in Figure 1, and critical piece has: a steel drum 1; Long 450mm; Wide 250mm, high 450mm, steel bracket 6 is equipped with in its inside; Steel bracket 6 height are 250mm, and detachable bung (not shown) is arranged at top; One paddle 5, it is of a size of 100mm ' 100mm ' 100mm, and it is the bucket end 150mm of end distance steel drum 1 down, can top be provided with fixedly paddle and reaches 400r/min speed motor rotating device (not shown); One control valve 4 and a high-pressure hydraulic pump 3, they with steel drum 1 between be connected with conduit 2.
Test intensity is the concrete test block of C30, adopts the flow velocity of 20m/s, 30m/s, 40m/s that the mill test is dashed in test block respectively, as embodiment 1,2,3.
Embodiment 1
1, be one group by 7, three test blocks of C30 concrete test block to be measured of standard method moulding 150mm ' 150mm ' 150mm, maintenance to 28 day test length of time;
2, before the test, 48h is soaked in test block in water; During test, take out test block, wipe surface moisture, weighing obtains testing preceding quality M0;
3, steel drum is put in test block, placed on the steel bracket; In bucket, add entry and normal sand, the volume ratio of sand and water is 1:5, and liquid level is parallel with the steel bracket end face; Cover bung, open the paddle motor, make its rotating speed reach 400r/min; Valve is transferred to 20m/s, open high-pressure hydraulic pump, this moment, flow velocity was 20m/s;
4, continuous behind mill 24h, stopping device takes out test block, rinses well, wipes surface moisture, and weighing obtains testing back mass M T.
5, calculate the rate of wear of concrete test block according to formula
; With the mean value of one group of three test block as test findings; Like the difference of single measured value and mean value above 15% o'clock; Then this value should be rejected; With the mean value of remaining two measured values as test findings; If available measured value is less than two in one group, this group test of then reforming.
Through valve with flow rate regulation to 30m/s, other is identical with embodiment 1.
Through valve with flow rate regulation to 40m/s, other is identical with embodiment 1.
Test result is as shown in table 1.
C30 is concrete towards the attrition rate under table 1 different in flow rate
| The embodiment numbering | Flow velocity (m/s) | Rate of wear (%) |
| 1 | 20 | 1.6 |
| 2 | 30 | 3.7 |
| 3 | 40 | 13.2 |
To sum up, the utility model has the advantages that: the test test block is 150mm ' 150mm ' 150mm reference block, and common laboratory all has this kind mould, convenient formation; Adopt the potpourri of normal sand and water concrete test block to be dashed mill, can effectively simulate the concrete working environment of water conservancy project, use paddle that potpourri is constantly stirred simultaneously, prevent that sand from sinking in water as the wearing and tearing agent; Whole device is the circulation system, need not operation bidirectional, labor and material saving after the unlatching; Can pass through control valve, the control flow velocity can be simulated multiple environment between 20-40m/s.Advantages such as in a word, the device of the utility model has simulation accurately, and equipment is simple, and is easy to operate, and the test duration is short.
Claims (4)
1. test unit of testing water conservancy project concrete anti-abrasion performance, it is characterized in that: this device includes a steel drum, a paddle, control valve and high-pressure hydraulic pump, and steel bracket is equipped with in steel drum inside, and detachable bung is arranged at top; Paddle is arranged in steel drum, and its top is driven by electric machine; And the joint valve of deciding a law case is connected with steel drum through conduit with high-pressure hydraulic pump; Concrete test block to be measured places on the steel bracket.
2. the test unit of test water conservancy project concrete anti-abrasion performance as claimed in claim 1, it is characterized in that: steel drum is of a size of long 450mm, wide 250mm, high 450mm, the steel bracket that be equipped with its inside is high to be 250mm.
3. the test unit of test water conservancy project concrete anti-abrasion performance as claimed in claim 1, it is characterized in that: paddle is of a size of 100mm ' 100mm ' 100mm, 150mm at the bottom of the end distance steel drum bucket under it.
4. the test unit of test water conservancy project concrete anti-abrasion performance as claimed in claim 1 is characterized in that: electric machine is paddle and reach 400r/min speed rotation fixedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202102463U CN202119687U (en) | 2011-06-21 | 2011-06-21 | Testing device for testing anti-flushing and abrasion-resistant performance of hydraulic concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202102463U CN202119687U (en) | 2011-06-21 | 2011-06-21 | Testing device for testing anti-flushing and abrasion-resistant performance of hydraulic concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202119687U true CN202119687U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202102463U Expired - Lifetime CN202119687U (en) | 2011-06-21 | 2011-06-21 | Testing device for testing anti-flushing and abrasion-resistant performance of hydraulic concrete |
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| Country | Link |
|---|---|
| CN (1) | CN202119687U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841027A (en) * | 2011-06-21 | 2012-12-26 | 厦门市宏业工程建设技术有限公司 | Test device and test method for measuring erosion and abrasion resistance of hydraulic concrete |
| CN106226185A (en) * | 2016-08-31 | 2016-12-14 | 马鞍山市海天重工科技发展有限公司 | A kind of abrasion wear test machine |
| CN109085080A (en) * | 2018-09-28 | 2018-12-25 | 内蒙古工业大学 | Concrete anti-ice abrasion test device and test method |
| CN113984577A (en) * | 2021-09-14 | 2022-01-28 | 四川能达工程检测有限公司 | Concrete anti-impact grinding test piece abrasion volume measuring device |
-
2011
- 2011-06-21 CN CN2011202102463U patent/CN202119687U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841027A (en) * | 2011-06-21 | 2012-12-26 | 厦门市宏业工程建设技术有限公司 | Test device and test method for measuring erosion and abrasion resistance of hydraulic concrete |
| CN106226185A (en) * | 2016-08-31 | 2016-12-14 | 马鞍山市海天重工科技发展有限公司 | A kind of abrasion wear test machine |
| CN109085080A (en) * | 2018-09-28 | 2018-12-25 | 内蒙古工业大学 | Concrete anti-ice abrasion test device and test method |
| CN109085080B (en) * | 2018-09-28 | 2023-10-27 | 内蒙古工业大学 | Concrete ice-wear-resistant test device and test method |
| CN113984577A (en) * | 2021-09-14 | 2022-01-28 | 四川能达工程检测有限公司 | Concrete anti-impact grinding test piece abrasion volume measuring device |
| CN113984577B (en) * | 2021-09-14 | 2024-01-26 | 四川能达工程检测有限公司 | Concrete anti-abrasion test piece abrasion volume measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA BUILDING MATERIAL TEST + CERTIFICATION GROUP Free format text: FORMER NAME: XIAMEN HONGYE PROJECT BUILDING TECHNIQUE, LTD. |
|
| CP03 | Change of name, title or address |
Address after: Sonoyama Road, Huli District of Xiamen city in Fujian province 361009 No. 802 room 704 Patentee after: China Building Material Test & Certification Group Xiamen Hongye Co., Ltd. Address before: Siming District of Xiamen City, Fujian province 361000 Doo electronic building 12 floor Patentee before: Xiamen Hongye Engineering Construction Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |