CN206132549U - Test instrument of accurate determination of concrete dry bulk density - Google Patents

Abstract

The utility model discloses a test instrument of accurate determination of concrete dry bulk density, including flourishing water containing ware, the side wall mounting water control devices of flourishing water containing ware, install the spring on the bottom plate of flourishing water containing ware, test sample table is connected to the upper end of spring, a section of thick bamboo is protected in the installation in the flourishing water containing ware, and the spring setting is in protecting a section of thick bamboo, and test sample table is protecting an internal motion, protect a section of thick bamboo and set up aproll hole and two vertical open slots. The utility model discloses but the volume of accurate measurement immersed tube concrete dry bulk density sample to the test parameter that provides accurate concrete dry bulk density is controlled to the transportation by driving of immersed tube tube coupling to the dry bulk density of accurate determination of immersed tube concrete.

Description

A kind of testing inspection instrument of Accurate Determining concrete dry unit weight

Technical field

The utility model is related to a kind of testing inspection instrument of Accurate Determining concrete dry unit weight, accurate using volume displaced method Really determine the dry density of concrete.

Background technology

Immersed tube engineering is needed due to immersed tube cube transportation, and what immersed tube armored concrete tube coupling be able to will be floated gets up, while again Consider immersed tube cube transportation freeboard value control height, the dry density of immersed tube tube coupling concrete detected, concrete it is dry Unit weight in national existing inspection criterion, without clear and definite detection method, during construction, it is conventional have hanging basket method, Core drilling method, hanging basket method, core drilling method determine the dry density of concrete and all there is certain error, and the quality of concrete is easily measured, The error of measure be mainly reflected in the volume to concrete measure aspect, core drilling method because core sample is in drilling operation, coring There are certain vibrations in equipment, there is certain deviation to the diameter of concrete core sample, and the equally cutting in concrete core sample adds During work, due to the deviation of the flatness of core sample, certain deviation is caused to the height of concrete core sample, cause to use drill core The dry density of the concrete that method is determined is inaccurate；During immersed tube concrete dry unit weight is determined, being dried test specimen will for hanging basket method The water of certain volume is drawn, the dry density for also resulting in the immersed tube concrete of hanging basket method measure is inaccurate, thus, it is necessary to produce A kind of test apparatus of energy Accurate Determining concrete dry unit weight and searching determine a kind of energy Accurate Determining immersed tube concrete dry unit weight Test method, can Accurate Determining immersed tube concrete dry density, provide accurate concrete to the control of the transportation by driving of immersed tube tube coupling The test parameters of dry density.

Utility model content

For technical problem present in background technology, the purpose of this utility model is to propose that a kind of energy Accurate Determining is mixed The testing inspection instrument of solidifying soil dry density, i.e. concrete dry unit weight detector, using volume displaced method Accurate Determining concrete dry Unit weight.

To achieve these goals, the utility model employs following technical proposals.

A kind of testing inspection instrument of Accurate Determining concrete dry unit weight, including water container, the side of the water container Water control device is installed on wall, spring, the upper end connection sample bench of spring are installed on the base plate of the water container.

Further preferably, casing is installed, spring is arranged in casing, and sample bench is transported in casing in the water container It is dynamic.

Further preferably, the casing offers apron hole.

Further preferably, casing is provided with two vertical open slots.

Further preferably, the water control device is draining valve.

Further preferably, also including the water receiving container and electronic balance being arranged at draining valve.

Further preferably, the water receiving container is graduated cylinder.

Further preferably, it is provided with thermo detector in the water container.

The utility model can accurately measure the volume of immersed tube concrete dry unit weight sample, by arranging sample bench and spring, When concrete sample is put in water container, hand can not get wet, and due to the cushioning effect of spring, immersed tube concrete dry holds The slow submerged of sample is retried, will not be dabbled, immersed tube concrete dry unit weight sample is picked and placeed conveniently.

Description of the drawings

Fig. 1 is the schematic diagram of embodiment 1.

Fig. 2 is the schematic diagram of embodiment 2.

Fig. 3 is the schematic diagram of casing in embodiment 2.

Fig. 4 is the schematic diagram of sample bench in embodiment 2.

In figure：1. water container, 2. handle, 3. draining valve, 4. sample bench, 5. spring, 6. casing, 61. open slots.

Specific embodiment

Embodiment 1

The method for testing and detecting of Accurate Determining immersed tube concrete dry unit weight be the volume displaced method of concrete sample, concrete dry The making of unit weight detector and volume displaced method test method are described below：

1. in immersed tube concrete main body processing is drilled through or using with the consistent standard concrete test specimen of immersed tube concreting As immersed tube concrete dry unit weight sample to be measured, immersed tube concrete dry unit weight sample to be measured require to reach 28 day age and more than, Concrete hydrating reaction is fully completed, and does placement more than 24 hours to immersed tube concrete dry unit weight sample sector-style to be measured, as Immersed tube concrete dry unit weight sample to be measured；

2. processing is filled with water height more than immersed tube concrete sample to be tested height, and size can accommodate the circle for placing sample to be tested Shape or square water container (1), and two handles (2) are set, as shown in figure 1, in the position of the water surface higher than sample to be tested height Put processing, water control device, draining valve (3) as shown in Figure 1 are installed；

3. immersed tube concrete dry unit weight sample requirement to be measured can be met with weighing range, weighing precision can be accurate to 0.01g Electronic balance correct amount is carried out to immersed tube concrete dry unit weight sample to be measured, and be identified, weighing quality status stamp is m₁；

4. pair water container (1) carries out water filling, and water filling highly reaches slightly above water control device, opens draining valve (3), enters The careful observation of row, until draining valve (3) place there is not water to overflow；Close draining valve (3)；

5. immersed tube concrete sample to be measured is put in water container (1), water can not spill out in specimen is placed Water container, spring (5) can be installed on the base plate of water container (1), and (the pressure-bearing load of spring (5) need to be less than the gravity of sample Load), and welded specimen platform (4) on spring (5) (immersed tube concrete dry unit weight sample to be measured is placed on sample bench (4), it is to be measured Immersed tube concrete dry unit weight sample slowly sinks) hand of operating personnel can not contact with water, place water receiving at draining valve (3) place and hold Device, such as graduated cylinder, open draining valve (3)；

6. after draining valve (3) place confirms anhydrous spilling, draining valve (3) is closed, the water docked in water receptacle is weighed, The quality status stamp of water is：m₂；During using graduated cylinder as water receiving container, volume can be directly read.

7. pull immersed tube concrete dry unit weight sample out from water container, wiped to sample concrete surface with dry towel and be Saturated dry surface, and correct amount is carried out to immersed tube concrete dry unit weight sample, weigh sample mass and be labeled as：m₃。

8. the volume of immersed tube concrete dry unit weight sample is：V=((m₃-m₁)+m₂)/(1 ± water temperature correction factor)；

9. immersed tube concrete dry unit weight is：P=m₁/v。

Embodiment 2

With reference to Fig. 2, a kind of testing inspection instrument of Accurate Determining concrete dry unit weight, including water container (1), the Sheng Install in draining valve (3), the water container (1) to install on the side wall of water receptacle (1) and arrange in casing (6), casing (6) spring (5), the upper end sample bench (4) of spring (5), sample bench (4) motion in casing (6).So ensure immersed tube concrete dry unit weight Will not rock in sample sinking watching and topple over, further, with reference to Fig. 3, the casing (6) offers apron hole, sinking watching In, the water in casing (6) can scatter, and further, casing (6) is provided with two vertical open slots, after convenient test, picks up Immersed tube concrete dry unit weight sample.

Further, in order to prevent immersed tube concrete dry unit weight sample from rubbing with casing (6), and immersed tube concrete dry holds Sample is retried without departing from sample bench (4), with reference to Fig. 4, the sample bench (4) is provided with retaining ring, and the sample bench (4) The heart sets through hole, facilitates water to flow.

Further, it is provided with thermo detector in the water container (1).Water temperature when detecting, root are read by thermo detector Volume amendment is carried out according to water temperature.

Claims (8)

1. a kind of testing inspection instrument of Accurate Determining concrete dry unit weight, including water container, it is characterised in that：It is described to be filled with water Water control device is installed on the side wall of container, spring, the upper end connection sample bench of spring are installed on the base plate of the water container.

2. the testing inspection instrument of Accurate Determining concrete dry unit weight according to claim 1, it is characterised in that：The Sheng Casing is installed, spring is arranged in casing, and sample bench is moved in casing in water receptacle.

3. the testing inspection instrument of Accurate Determining concrete dry unit weight according to claim 2, it is characterised in that：The shield Cylinder offers apron hole.

4. the testing inspection instrument of Accurate Determining concrete dry unit weight according to claim 2, it is characterised in that：Casing sets There are two vertical open slots.

5. the testing inspection instrument of Accurate Determining concrete dry unit weight according to claim 1, it is characterised in that：The control Water installations are draining valves.

6. the testing inspection instrument of Accurate Determining concrete dry unit weight according to claim 5, it is characterised in that：Also include Water receiving container and the electronic balance being arranged at draining valve.

7. the testing inspection instrument of Accurate Determining concrete dry unit weight according to claim 6, it is characterised in that：It is described to connect Water receptacle is graduated cylinder.

8. the testing inspection instrument of Accurate Determining concrete dry unit weight according to claim 1, it is characterised in that：The Sheng Thermo detector is provided with water receptacle.