CN111141610A - Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof - Google Patents
Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof Download PDFInfo
- Publication number
- CN111141610A CN111141610A CN202010065783.7A CN202010065783A CN111141610A CN 111141610 A CN111141610 A CN 111141610A CN 202010065783 A CN202010065783 A CN 202010065783A CN 111141610 A CN111141610 A CN 111141610A
- Authority
- CN
- China
- Prior art keywords
- test block
- concrete
- core sample
- concrete test
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device for detecting the compressive strength of concrete by a counter-pressure method and an application method thereof, wherein the device comprises the following steps: the device comprises: a concrete test block supporting device; pressing the concrete test block; a test block pressurizing power device; the device comprises a frame body. The application method comprises the following steps: step 1, drilling a core sample for a concrete solid member; step 2, cleaning the surface of the core sample of the concrete test block; step 3, placing the concrete test block core sample into an annular groove formed by the concrete test block supporting device and the concrete test block pressing block; step 4, pouring a fluid diffusion agent into the gap between the concrete test block core sample and the annular groove; step 5, the pressure of the test block pressurizing power device is reset to zero, and the test block pressurizing power device is started; step 6: taking out the damaged concrete test block core sample; and 7: and obtaining the real force value detected by the concrete test block core sample. The device for detecting the compressive strength of the concrete by the counter-pressure method and the application method thereof realize convenient detection of the solid member.
Description
Technical Field
The invention relates to the technical field of constructional engineering concrete quality detection, in particular to a device for detecting the compressive strength of concrete by a counter-pressure method and an application method thereof.
Background
Concrete is the most important material in building engineering, determines the quality of engineering, and the strength is the basis for determining other properties of concrete, and is the most important property of concrete. The concrete strength detection method includes a test block method, a rebound method, an ultrasonic method, a core drilling method and a pulling-out method.
1. The test block method is that the mixed concrete is poured into a specified cube test mould during construction, the mould is formed by vibration or insertion, after 28 days of maintenance is carried out according to specified temperature and humidity, a pressure test strength test is carried out, 150mm cube test pieces are taken as standard pieces, and 100mm and 200mm cube test pieces are converted according to specified size conversion coefficients. The concrete test block reflects the strength of a concrete entity to a certain extent, is a main basis for evaluating the quality of concrete, is the most common and basic detection method, and is the most intuitive and economic method.
The disadvantages are as follows: the test block method can directly reflect the strength of the concrete test block, but when the strength of the concrete test block is in doubt, the test block can hardly reflect the real strength of the entity member.
2. A core drilling method is characterized in that a diamond drill bit is used for drilling a core sample on a representative concrete structure, the core sample is processed, two ends of the core sample are sawed, ground or supplemented to be manufactured into a cylinder for measuring the compressive strength, but after the core is taken, a knot can be damaged to a certain extent, particularly, the damage to a steel bar drawn out of the structure is larger, so that structural members of important parts can be subjected to rechecking agreement of a design party, core pulling can be carried out, and the parts and the number of the core taking can be specified.
The disadvantages are as follows: the large diameter of the core sample causes high labor intensity, strict sampling process requirement, high core sample processing requirement, local damage to structural components, and too many steel bars of the components are inconvenient to extract.
3. The rebound method is to determine the surface hardness of the concrete by a rebound instrument and then deduce the compressive strength of the concrete by combining the carbonization depth of the concrete. The rebound value measured by the rebound instrument is the hardness of the concrete surface, the hardness of the material is related to the strength of the material, so that a special strength measurement curve of the rebound value and the strength is established to deduce a strength value, when a rebound method is adopted for detection, the detection surface of the rebound instrument is an original concrete surface, and the rebound instrument is smooth and clean and should not have a loose layer, laitance and a pitted surface, the loose layer and impurities are removed by a grinding wheel if necessary, and residual powder or fragments are not required.
The disadvantages are as follows: the accuracy is relatively poor, a certain strength measurement curve is needed, and when the quality of the surface and the internal quality of the concrete are obviously different, such as chemical corrosion or fire, frostbite during hardening and the like, the method cannot be used.
4. Ultrasonic testing method
The ultrasonic method is to measure the sound time values of the structural concrete member separately from the measuring area by an ultrasonic instrument. The propagation speed of the ultrasonic waves in the medium reflects the mechanical characteristics of the structure, and the strength and the internal quality of the concrete are reflected through the measured mechanical characteristics.
The disadvantages are as follows: when the ultrasonic method is used for measuring the strength, because factors influencing the sound velocity are many, such as the variety of cement, the amount of cement, the sand content, the variety and the maximum particle size of coarse aggregate, the water content, the age and the like, and when the used materials, the water content and the age are different, the relationship between the propagation speed and the strength of concrete is greatly different, so that the strength of the concrete is difficult to accurately measure by using the ultrasonic method, and at present, the ultrasonic method and the rebound resilience method are usually combined together to measure the strength of the concrete, namely, the so-called ultrasonic rebound synthesis method (a single ultrasonic method is mainly used for detecting the homogeneity of the concrete). Therefore, the concrete strength measured according to the technical specification for detecting the concrete strength by the ultrasonic rebound comprehensive method (the ultrasonic rebound method) is smaller than the actual strength of the concrete, but the rule is obvious, the discreteness is small, the explanation method is reliable, and a corresponding strength measurement curve needs to be established according to the materials and the environmental conditions used by the concrete in each region.
5. After-loading extraction method
The pulling-out method is a semi-damage detection method, and the pulling strength of the concrete is determined according to the pulling force when the anchor in the concrete of the test structure is pulled out, so that the cubic compressive strength of the concrete is calculated. Generally, the method is classified into a pre-cast pull-out method and a post-cast pull-out method. The pre-buried extraction method is to pre-embed an anchoring piece at a certain distance of the surface layer of the concrete member, and after the concrete is hardened, the anchoring piece applies extraction force to obtain the estimated strength of the concrete. The post-installation pulling-out method is a micro-damage method for detecting the compressive strength of concrete according to the measured pulling-out resistance by using a pulling-out method after drilling, grinding a groove and installing an anchoring piece on hardened concrete.
The disadvantages are as follows: the existing detection equipment has certain difficulty for detecting the solid member.
Based on the technical problems in the prior art, the inventor provides a device for detecting the compressive strength of concrete by a compression method and an application method thereof by combining construction experience for many years.
Disclosure of Invention
The invention provides a device for detecting the compressive strength of concrete by a counter-pressing method and an application method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for detecting concrete compressive strength by a counter-pressure method comprises:
the concrete test block supporting device is used for supporting the concrete test block to be detected;
the concrete test block pressing block is abutted against the concrete test block and forms an extrusion space of the concrete test block together with the concrete test block supporting device;
the test block pressurizing power device is connected to the concrete test block pressing block so as to apply extrusion force to the concrete test block pressing block;
the device comprises a device frame body, wherein the concrete test block supporting device and the test block pressurizing power device are arranged on the device frame body.
Furthermore, the device frame body is also provided with a first pressure-bearing end plate for supporting the test block pressurizing power device.
Furthermore, a concentric fixed shaft is fixedly arranged at the center of the bottom end of the test block pressurizing power device, an opening with a diameter larger than the diameter of the concentric fixed shaft is formed in the first pressure-bearing end plate, threads are formed in the concentric fixed shaft, and the test block pressurizing power device is fixed on the first pressure-bearing end plate through nuts matched with the threads.
Furthermore, the concrete test block supporting device is provided with a cambered surface groove matched with the appearance structure of the concrete test block, and the concrete test block pressing block is also provided with a cambered surface groove matched with the appearance structure of the concrete test block.
Furthermore, the concrete test block supporting device comprises a second pressure-bearing end fixed on the device frame body and a test block pressure supporting block fixedly installed on the second pressure-bearing end plate, and a cambered surface groove matched with the appearance structure of the concrete test block is formed in the test block pressure supporting block.
Furthermore, the test block pressurizing power device is an oil pressure power machine, and an oil pressure check valve is arranged on the oil pressure power machine.
Further, the concrete test block pressing block is provided with a moving track capable of moving on the device frame body, and the device frame body is provided with a track groove capable of being matched with the moving track.
The invention also aims to provide an application method of the device for detecting the compressive strength of the concrete by a compression method, which comprises the following steps:
step 4, pouring a fluid diffusion agent into the gap between the concrete test block core sample and the annular groove;
step 6: closing the pressurizing power device, releasing pressure of the pressurizing power device, and taking out the damaged concrete test block core sample;
and 7: and establishing a compressive strength curve according to the recorded pressure peak value when the concrete test block core sample is damaged and the compressive strength of the corresponding standard test block, thereby obtaining the real pressure value detected by the concrete test block core sample.
Further, in step 1, the core sample drilling of the concrete solid member comprises the following steps:
step 1.1: positioning a core sample taking area, marking the sampling area, and watering and wetting the sampling area 3-5 hours before sampling;
step 1.2: installing a core drilling machine above the area opposite to the core sampling area, fixing the core drilling machine on the concrete surface of the core sampling, adjusting a main shaft of the core drilling machine to enable the main shaft to be perpendicular to a tangent line of the outer surface of the core sampling, and conducting electric trial drilling;
step 1.3: adopting a drilling tool capable of drilling a core sample with the diameter of 38 mm, wherein the drilling speed is 1.5-2mm/min, the injection pressure of cooling water of a core drilling machine is 0.55-0.6Mpa, and the flow rate of the cooling water is 6-8L/min, stopping drilling until the drilling depth is 20mm, unloading the core drilling machine, and taking down the core sample;
step 1.4: fixing the core sample, cooling the core sample and a saw blade of a saw cutter by water, and sawing the core sample into the core sample with the length of 10 mm by the saw cutter, wherein the sawing plane is kept to be vertical to the axis of the core sample in the sawing process;
step 1.5: fixing the core sample and keeping the end face of the core sample flat, grinding the end face of the sawed core sample by using a single-face grinding machine, and keeping the end face of the core sample vertical to the axis of the core sample in the grinding process;
step 1.6: and (3) putting the molded core sample into a 60-degree oven to be dried for 60-80 minutes.
In step 4, the coagulant is composed of 20-30 parts by mass of silicate mineral powder, 10-15 parts by mass of acrylic emulsion, 20-30 parts by mass of silicate cement, 0.5-1 part by mass of surfactant, 0.2-0.3 part by mass of retarder, 0.1-0.4 part by mass of water-retaining agent, 0.5-1 part by mass of cellulose ether and 15-20 parts by mass of water.
Compared with the prior art, the invention has the following advantages:
1. according to the device for detecting the compressive strength of the concrete by the counter-pressure method, the counter-pressure detection of the concrete test block is realized through the matching arrangement of the concrete test block pressing block, the concrete test block supporting device and the test block pressurizing power device;
2. according to the device for detecting the compressive strength of the concrete by the butt-pressing method, the concentric fixed shaft is arranged, so that the force application position of the test block pressurizing power device can be conveniently adjusted;
3. the application method of the invention realizes the detection of the solid member by adopting the mode of finely processing the core sample so as to obtain more accurate detection data.
Drawings
Fig. 1 is a schematic structural diagram of a device for detecting the compressive strength of concrete by a counter-pressure method in embodiment 1 of the invention.
The drawings illustrate the following:
the concrete test block pressing device comprises a concrete test block supporting device 1, a concrete test block 2, a concrete test block 3, a concrete test block pressing block 4, a test block pressing power device 41, a concentric fixed shaft, a device frame 5, a first pressure-bearing end plate 6, a second pressure-bearing end plate 7 and a test block pressure supporting block 8.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, it being understood that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
Example 1
As shown in fig. 1, a device for detecting the compressive strength of concrete by a counter-pressure method comprises:
the concrete test block supporting device 1 is used for supporting a concrete test block 2 to be detected;
the concrete test block pressing block 3 is abutted against the concrete test block 2 and forms an extrusion space of the concrete test block 2 together with the concrete test block supporting device 1;
the test block pressurizing power device 4 is connected to the concrete test block pressing block 3 so as to apply extrusion force to the concrete test block pressing block 3;
the device comprises a device frame body 5, wherein the concrete test block supporting device 1 and the test block pressurizing power device 4 are arranged on the device frame body 5.
In this embodiment, the protruding end of the test block pressurizing power device 4 can be fixedly connected to the concrete test block pressing block 3; and can also contact with the concrete test block pressing block 3 in an abutting mode.
The device frame body 5 is also provided with a first pressure-bearing end plate 6 for supporting the test block pressurizing power device 4, wherein the first pressure-bearing end plate 6 is fixed on the device frame body 5 through a bolt, and the levelness or verticality of the first pressure-bearing end plate 6 is adjusted through the bolt to ensure that the test block pressurizing power device 4 is kept horizontal or vertical. Wherein, keeping horizontal or vertical represents the relative position of the device for detecting the concrete compressive strength by the compression method.
The central position of the bottom end of the test block pressurizing power device 4 is fixedly provided with a concentric fixed shaft 41, the first pressure-bearing end plate 6 is provided with an opening with a diameter larger than the diameter of the concentric fixed shaft 41, the concentric fixed shaft 41 is provided with threads, and the test block pressurizing power device 4 is fixed on the first pressure-bearing end plate 6 through nuts matched with the threads.
As a preferred embodiment of the present invention, the position of the test block pressurizing power device 4 and the position of the force applied to the concrete test block pressing block 3 can be adjusted by adjusting the specific position of the concentric fixed shaft 41, so as to ensure that the applied force is intensively applied to the concrete test block 2.
The concrete test block supporting device 1 is provided with a cambered surface groove matched with the appearance structure of the concrete test block 2, and the concrete test block pressing block 3 is also provided with a cambered surface groove matched with the appearance structure of the concrete test block 2.
In this embodiment, the concrete test block pressing block 3 is provided with two functional surfaces, one of which is an acting surface for applying force to the test block pressurizing power device 4, and the other of which is a pressing surface of the concrete test block 2.
The concrete test block supporting device 1 comprises a second pressure-bearing end plate 7 fixed on the device frame body 5 and a test block pressure supporting block 8 fixedly installed on the second pressure-bearing end plate 7, and an arc surface groove matched with the appearance structure of the concrete test block 2 is formed in the test block pressure supporting block 8. The depth of the arc surface groove on the test block pressure support block 8 is smaller than the radius of the concrete test block 2 (in this embodiment, the concrete test block 2 is a cylinder with a diameter of 38 mm and a length of 10 mm); the depth of the cambered surface groove on the concrete test block pressing block 3 is smaller than the radius of the concrete test block 2.
The test block pressurizing power device 4 is an oil pressure power machine, and an oil pressure check valve is arranged on the oil pressure power machine.
The concrete test block pressing block 3 is provided with a moving rail (not shown) which can move on the device frame body 5, and the device frame body 5 is provided with a rail groove which can be matched with the moving rail.
The application method of the device for detecting the compressive strength of the concrete by the compression method comprises the following steps:
step 4, pouring a fluid-shaped diffusion agent into the gap between the core sample of the concrete test block and the annular groove so as to ensure that the core sample is tightly combined with the pressing plate and the bearing plate without gaps;
step 6: closing the test block pressurizing power device 4, decompressing the test block pressurizing power device 4, and taking out the damaged concrete test block core sample;
and 7: and establishing a compressive strength curve according to the recorded pressure peak value when the concrete test block core sample is damaged and the compressive strength of the corresponding standard test block, thereby obtaining the real force value detected by the concrete test block core sample.
In step 1 of this embodiment, the core sample drilling of the concrete solid member comprises the following steps:
step 1.1: positioning a core sample taking area, marking the sampling area, watering and wetting the sampling area 3-5 hours before sampling to ensure the smooth drilling of a drilling tool and the integrity of a core sample, wherein the core sample which is not watered and wetted is easy to damage in the actual operation process;
step 1.2: installing a core drilling machine above the area opposite to the core sampling area, fixing the core drilling machine on the concrete surface of the core sampling, adjusting a main shaft of the core drilling machine to enable the main shaft to be perpendicular to a tangent line of the outer surface of the core sampling, and conducting electric trial drilling;
step 1.3: adopting a drilling tool capable of drilling a core sample with the diameter of 38 mm, wherein the drilling speed is 1.5-2mm/min (the axial drilling depth of the core sample is referred to herein), the injection pressure of cooling water of the core drilling machine is 0.55-0.6Mpa, the flow rate of the cooling water is 6-8L/min, stopping drilling until the drilling depth is 20mm, unloading the core drilling machine, and taking down the core sample;
step 1.4: fixing the core sample, cooling the core sample and a saw blade of a sawing machine by water, sawing the core sample into the core sample with the length of 10 mm by the sawing machine, sawing off two ends of the core sample, and reserving a middle section, wherein a sawing plane is kept to be vertical to the axis of the core sample in the sawing process;
step 1.5: fixing the core sample and keeping the end face of the core sample flat, grinding the end face of the sawed core sample by using a single-face grinding machine, and keeping the end face of the core sample vertical to the axis of the core sample in the grinding process;
step 1.6: and (3) putting the molded core sample into a 60-degree oven to be dried for 60-80 minutes.
In step 4 of this example, the coagulant is composed of 20 to 30 parts by mass of silicate mineral powder, 10 to 15 parts by mass of acrylic emulsion, 20 to 30 parts by mass of portland cement, 0.5 to 1 part by mass of surfactant, 0.2 to 0.3 part by mass of retarder, 0.1 to 0.4 part by mass of water-retaining agent, 0.5 to 1 part by mass of cellulose ether, and 15 to 20 parts by mass of water.
The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only for illustrating the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. The utility model provides a to pressing method detection concrete compressive strength device which characterized in that includes:
the concrete test block supporting device is used for supporting the concrete test block to be detected;
the concrete test block pressing block is abutted against the concrete test block and forms an extrusion space of the concrete test block together with the concrete test block supporting device;
the test block pressurizing power device is connected to the concrete test block pressing block so as to apply extrusion force to the concrete test block pressing block;
the device comprises a device frame body, wherein the concrete test block supporting device and the test block pressurizing power device are arranged on the device frame body.
2. The device for detecting the compressive strength of the concrete by the counter-pressure method according to claim 1, wherein a first pressure-bearing end plate for supporting the test block pressurizing power device is further arranged on the device frame body.
3. The device for testing the compressive strength of concrete by a counter-pressure method according to claim 2, wherein a concentric fixed shaft is fixedly arranged at the center of the bottom end of the test block pressurizing power device, the pressure-bearing end plate is provided with an opening with a diameter larger than the diameter of the concentric fixed shaft, the concentric fixed shaft is provided with threads, and the test block pressurizing power device is fixed on the first pressure-bearing end plate through a nut matched with the threads.
4. The device for detecting the compressive strength of concrete by the counter-pressure method according to claim 1, wherein the concrete test block supporting device is provided with a cambered surface groove matched with the appearance structure of the concrete test block, and the concrete test block pressing block is also provided with a cambered surface groove matched with the appearance structure of the concrete test block.
5. The device for testing the compressive strength of concrete by the counter-pressure method according to claim 1, wherein the concrete test block supporting device comprises a second pressure-bearing end plate fixed on the device frame body and a test block pressure supporting block fixedly installed on the second pressure-bearing end plate, and the test block pressure supporting block is provided with a cambered surface groove matched with the appearance structure of the concrete test block.
6. The device for testing the compressive strength of concrete by the counter-pressure method according to claim 1, wherein the test block pressurizing power device is an oil pressure power machine, and the oil pressure power machine is provided with an oil pressure check valve.
7. The device for testing the compressive strength of concrete by a counter-pressing method according to claim 1, wherein the concrete test block pressing block is provided with a moving rail capable of moving on the device frame body, and the device frame body is provided with a rail groove capable of being matched with the moving rail.
8. The application method of the device for detecting the compressive strength of the concrete by the counter-pressure method according to any one of claims 1 to 7, is characterized by comprising the following steps:
step 1, drilling a core sample for a concrete solid member, wherein the core sample is a concrete test block with the diameter of 38 mm and the length of 10 mm;
step 2, cleaning the surface of the core sample of the concrete test block, wiping the core sample by cotton cloth, and removing scum on the surface of the core sample of the concrete test block so as to avoid influencing the compressive strength;
step 3, placing the concrete test block core sample into an annular groove formed by an arc surface groove formed in the concrete test block supporting device and an arc surface groove formed in the concrete test block pressing block;
step 4, pouring a fluid diffusion agent into the gap between the concrete test block core sample and the annular groove;
step 5, the pressure of the test block pressurizing power device is reset to zero, the test block pressurizing power device is started, the annular groove holding the concrete test block core sample is pressurized until the concrete test block core sample between the concrete test block supporting device and the concrete test block pressing block is damaged by pressure, the pressurization is stopped, and the pressure peak value when the concrete test block core sample is damaged is recorded;
step 6: closing the test block pressurizing power device, releasing pressure of the test block pressurizing power device, and taking out the damaged concrete test block core sample;
and 7: and establishing a compressive strength curve according to the recorded pressure peak value when the concrete test block core sample is damaged and the compressive strength of the corresponding standard test block, thereby obtaining the real pressure value detected by the concrete test block core sample.
9. The method of use according to claim 8, wherein the step 1 of drilling a core sample from the concrete solid member comprises the steps of:
step 1.1: positioning a core sample taking area, marking the sampling area, and watering and wetting the sampling area 3-5 hours before sampling;
step 1.2: installing a core drilling machine above the area opposite to the core sampling area, fixing the core drilling machine on the concrete surface of the core sampling, adjusting a main shaft of the core drilling machine to enable the main shaft to be perpendicular to a tangent line of the outer surface of the core sampling, and conducting electric trial drilling;
step 1.3: adopting a drilling tool capable of drilling a core sample with the diameter of 38 mm, wherein the drilling speed is 1.5-2mm/min, the injection pressure of cooling water of a core drilling machine is 0.55-0.6Mpa, and the flow rate of the cooling water is 6-8L/min, stopping drilling until the drilling depth is 20mm, unloading the core drilling machine, and taking down the core sample;
step 1.4: fixing the core sample, cooling the core sample and a saw blade of a saw cutter by water, and sawing the core sample into the core sample with the length of 10 mm by the saw cutter, wherein the sawing plane is kept to be vertical to the axis of the core sample in the sawing process;
step 1.5: fixing the core sample and keeping the end face of the core sample flat, grinding the end face of the sawed core sample by using a single-face grinding machine, and keeping the end face of the core sample vertical to the axis of the core sample in the grinding process;
step 1.6: and (3) putting the molded core sample into a 60-degree oven to be dried for 60-80 minutes.
10. The application method according to claim 8, wherein in step 4, the dispersing agent comprises 20 to 30 parts by mass of silicate mineral powder, 10 to 15 parts by mass of acrylic emulsion, 20 to 30 parts by mass of portland cement, 0.5 to 1 part by mass of a surfactant, 0.2 to 0.3 part by mass of a retarder, 0.1 to 0.4 part by mass of a water-retaining agent, 0.5 to 1 part by mass of cellulose ether, and 15 to 20 parts by mass of water.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065783.7A CN111141610A (en) | 2020-01-20 | 2020-01-20 | Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof |
| CN202011141550.7A CN112033810A (en) | 2020-01-20 | 2020-10-22 | Device and method for detecting compressive strength of concrete by cambered surface opposite compression method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065783.7A CN111141610A (en) | 2020-01-20 | 2020-01-20 | Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111141610A true CN111141610A (en) | 2020-05-12 |
Family
ID=70526395
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010065783.7A Pending CN111141610A (en) | 2020-01-20 | 2020-01-20 | Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof |
| CN202011141550.7A Pending CN112033810A (en) | 2020-01-20 | 2020-10-22 | Device and method for detecting compressive strength of concrete by cambered surface opposite compression method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011141550.7A Pending CN112033810A (en) | 2020-01-20 | 2020-10-22 | Device and method for detecting compressive strength of concrete by cambered surface opposite compression method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN111141610A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033810A (en) * | 2020-01-20 | 2020-12-04 | 廊坊市阳光建设工程质量检测有限公司 | Device and method for detecting compressive strength of concrete by cambered surface opposite compression method |
| CN113155614A (en) * | 2021-04-25 | 2021-07-23 | 张启志 | Concrete compressive strength detection method and system based on similarity determination |
| CN117890425A (en) * | 2024-03-14 | 2024-04-16 | 四川水发勘测设计研究有限公司 | Concrete placement heat dissipation test device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096707B (en) * | 2022-08-26 | 2022-11-18 | 中铁北京工程局集团(天津)工程有限公司 | Building material compressive strength detection device for bridge engineering |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042932B (en) * | 2009-10-23 | 2013-12-04 | 江苏省建筑科学研究院有限公司 | Instrument for detecting mortar strength by pressure selecting method |
| CN202770707U (en) * | 2012-02-14 | 2013-03-06 | 中交第三公路工程局有限公司 | Pressure testing machine |
| CO7130281A1 (en) * | 2014-09-30 | 2014-12-01 | Univ De La Salle | Device and method for determining uncontrolled compressive strength in samples of rocks or other disc-shaped materials and subjected to diametral loading |
| CN105043866A (en) * | 2015-06-05 | 2015-11-11 | 中国科学院上海应用物理研究所 | Method and device for testing tensile strength |
| CN205826420U (en) * | 2016-06-26 | 2016-12-21 | 天津市志利车料有限公司 | A kind of compression testing machine |
| CN206459900U (en) * | 2017-02-22 | 2017-09-01 | 刘恒 | The tensile test apparatus of rock sample |
| CN206504952U (en) * | 2017-02-25 | 2017-09-19 | 北京班诺混凝土有限公司 | A kind of pressure testing machine |
| CN206740538U (en) * | 2017-05-05 | 2017-12-12 | 广州超力混凝土有限公司 | Concrete pressure testing machine |
| CN207215571U (en) * | 2017-05-25 | 2018-04-10 | 北京城建亚泰金砼混凝土有限公司 | Concrete pressure testing machine |
| CN207423670U (en) * | 2017-11-08 | 2018-05-29 | 广州市市政工程试验检测有限公司 | Anchor bar anti-pulling experiment displacement sensor fixing device after a kind of |
| CN208334078U (en) * | 2018-05-31 | 2019-01-04 | 张雨 | concrete tensile strength test device |
| CN109580383A (en) * | 2018-12-03 | 2019-04-05 | 郑州正大建筑技术有限公司 | A kind of architectural engineering concrete core sample bending testing device |
| CN111141610A (en) * | 2020-01-20 | 2020-05-12 | 廊坊市阳光建设工程质量检测有限公司 | Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof |
| CN213580456U (en) * | 2020-10-22 | 2021-06-29 | 廊坊市阳光建设工程质量检测有限公司 | Device for detecting compressive strength of concrete by cambered surface butt-pressing method |
-
2020
- 2020-01-20 CN CN202010065783.7A patent/CN111141610A/en active Pending
- 2020-10-22 CN CN202011141550.7A patent/CN112033810A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033810A (en) * | 2020-01-20 | 2020-12-04 | 廊坊市阳光建设工程质量检测有限公司 | Device and method for detecting compressive strength of concrete by cambered surface opposite compression method |
| CN113155614A (en) * | 2021-04-25 | 2021-07-23 | 张启志 | Concrete compressive strength detection method and system based on similarity determination |
| CN113155614B (en) * | 2021-04-25 | 2023-07-28 | 张启志 | Concrete compressive strength detection method and system based on similarity judgment |
| CN117890425A (en) * | 2024-03-14 | 2024-04-16 | 四川水发勘测设计研究有限公司 | Concrete placement heat dissipation test device |
| CN117890425B (en) * | 2024-03-14 | 2024-05-28 | 四川水发勘测设计研究有限公司 | Concrete placement heat dissipation test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112033810A (en) | 2020-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111141610A (en) | Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof | |
| CN106769441B (en) | Method for detecting solid strength and construction quality of grouting material for grouting connection of steel bar sleeve | |
| CN110376031B (en) | Test method for simulating coarse aggregate-mortar weakened interface | |
| CN100567983C (en) | The device of first final setting time method of testing of non-damage type concrete and use thereof | |
| Ozyildirim et al. | Concrete strength testing | |
| Gong et al. | Research on the constitutive relationship of concrete under uniaxial compression in freeze–thaw environment | |
| CN117288836A (en) | Construction concrete strength compression-resistant detection technology | |
| CN115931487A (en) | Method for testing cohesive force and internal friction angle of rock-like material | |
| Gorzelańczyk | Acoustically assessed influence of air pore structure on failure of self-compacting concretes under compression | |
| CN114414344B (en) | Method for testing performance of concrete structural surface in water environment | |
| CN109211670B (en) | Detection method for elastic modulus of CA mortar | |
| Katuwal | Correlation between concrete compressive strength and rebound number of river bed and crusher run coarse aggregate in Pokhara Valley | |
| CN211250697U (en) | High-ductility cement-based material self-healing seepage test workpiece mold | |
| Campos | Effect of fiber content on tensile strength of non-proprietary ultra-high performance concrete | |
| Petersen | LOK-TEST AND CAPO-TEST DEVELOPMENT AND THEIR APPLICATIONS. | |
| CN208334278U (en) | A kind of concrete structure elasticity modulus detection device based on core boring sampling impact echo | |
| Granja et al. | Continuous Monitoring of Concrete Mechanical Properties since an Early Age to Support Construction Phasing | |
| Jiang et al. | Evaluation of frost damage on high-belite cement concrete based on Vickers hardness and ultrasonic theory | |
| Abdel-Hafez et al. | Evaluating the astm c944 rotating cutters method for determining the abrasion resistance of concrete | |
| TWI715274B (en) | Method and structure of in-situ concrete strength testing by expansion pressure test | |
| CN102095840B (en) | Method for measuring pH value of carbonated concrete pore solution | |
| Soares et al. | Use of non-standard specimens to study the compressive strength of multi-coat renders | |
| Wang et al. | Experimental study of effects of water-cement ratio on the acoustic emission rate “a” values in concrete | |
| Cai et al. | The bonding performance of desert sand self-compacting concrete overlay on normal strength concrete substrate: Macro, micro, and ultrasonic testing | |
| Sun et al. | Monitoring and estimate of concrete compressive strength in full curing period using smart piezoelectric modules |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200512 |
|
| WD01 | Invention patent application deemed withdrawn after publication |