Full-automatic tester for slump degree of cement concrete

Abstract

The invention relates to a full-automatic tester for a slump degree of cement concrete. The full-automatic tester comprises an environmental box, as well as a slump degree cylinder, a scraping apparatus and an inserting and pounding apparatus which are successively arranged in the environmental box from bottom to top, wherein the slump degree cylinder is connected with a vertical traction apparatus; the scraping apparatus is provided with a through hole capable of being communicated with the upper end of the slump degree cylinder, and the scraping apparatus is connected with the horizontal traction apparatus; the lower end of the inserting and pounding apparatus can stretch into the slump degree cylinder, and the upper end of the inserting and pounding apparatus is connected with a liftingapparatus; a feeding apparatus for feeding materials into the slump degree cylinder is also arranged above the slump degree cylinder; the vertical traction apparatus, the horizontal traction apparatus and the lifting apparatus are respectively connected with a power apparatus, and the power apparatus is connected with a controller; and a measurement apparatus for acquiring a slump degree of cement concrete is also installed in the environmental box. By adopting the full-automatic tester for the slump degree of the cement concrete, the accuracy of a test result can be ensured, the automatic operation can be realized, the experiment continuity is good, and the accuracy and reality of a measured result are good.

Description

technical field [0001] The invention relates to the field of concrete detection equipment, in particular to a fully automatic tester for cement concrete slump. Background technique [0002] Slump is an important property of cement concrete, which directly affects the plasticizing performance and pumpability of cement concrete. The existing slump measuring instruments are mainly slump measuring cylinders, whose working principle is to put the cement concrete mixture into the standard conical slump cylinder according to the prescribed method, and lift the cylinder vertically upwards after filling and scraping. , move aside. The cement concrete mixture will slump due to its own weight. Then measure the height of the downward slump, which is the slump. [0003] However, such a slump measuring cylinder has the following problems: the plane on which the bottom plate is placed is required to be horizontal, solid and non-absorbent, and such a bottom plate lacks identification or ...

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Problems solved by technology

[0003] However, such a slump measuring cylinder has the following problems: the plane on which the bottom plate is placed is required to be horizontal, solid and non-absorbent, and such a bottom plate lacks identification or uniqueness, especially in construction sites under various construction environments and conditions , there are differences in the plane requirements of the bottom plate placed in the site selected for the in-situ test, and the randomness is large

The device has the following deficiencies: the slump cylinder is not restrained when it is lifted upwards, and it is easy to shake, and the operation will cause partial lifting, and the verticality cannot be guaranteed; the slump cylinder is easy to shake during the insertion and tamping process, which affects the accuracy of measurement

[0005] The Chinese patent with the publication number CN 2046027 U discloses a slump cylinder cleaning device, which solves the problem that after the concrete slump is detected, the inner and outer surfaces of the slump cylinder adhere to the cement mortar layer in the concrete. Concrete slurry cross flow, difficult to clean the ground, or directly discharged into the sewer, easy to cause blockage

[0006] The above-mentioned device for measuring slump in the field of concrete preparation still has the following disadvantages and deficiencies: first, manual charging, inserting and pounding operations are more labor-intensive and time-consuming, and the fluidity of freshly mixed concrete has a certain influence, and It is difficult to control the uniformity of the concrete after tamping; second, after lifting the slump cylinder, use a meter ruler to measure, due to the visual reading of the line of sight, resulting in large errors; third, the entire experimental process is difficult to complete by one person, and the continuity of the experiment is poor , the time is difficult to control, which affects the accuracy and authenticity of the measurement results; Fourth, the measurement process does not consider the influence of temperature, humidity, wind speed and other conditions on different construction sites on the experimental results

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