CN202083688U - A cement concrete slump measuring device - Google Patents

Abstract

A cement concrete slump measuring device includes a cylinder body, a bottom plate and a measuring device. The cylinder and the bottom plate are connected by bolts. The measuring device includes a vertical pole, a steel ruler and a horizontal scale. Both the vertical pole and the steel ruler are fixed vertically on the bottom plate. The horizontal scale is set on the vertical pole to read the slump of cement concrete. . The utility model has the advantages of simple structure, convenient operation, relatively fixed measuring device and test body, and high measurement accuracy.

Description

A cement concrete slump measuring device

technical field

The utility model relates to a building material testing tool, in particular to a cement concrete slump measuring device.

Background technique

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.

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. Compared with the operating manpower, time and test results consumed by the indoor test and the construction site test, the difference will be greater.

Put the slump cylinder in the center of the floor, one person steps on the pedals on both sides of the slump cylinder to fix the slump cylinder, and one person loads and tamps the cement concrete. This operation is slow and the fixed slump cylinder stands for a long time The labor intensity is high; during the tamping process of the tamping rod, a certain frictional resistance is generated between the slump cylinder wall and the cement concrete mixture, and the slump cylinder is easy to move upward or left and right, and the height of the cement concrete cone increases or Deviated from the center of the bottom plate, the height of the cement concrete cone often exceeds the standard height of the slump cylinder of 300mm, which affects the measurement of the standard cement concrete cone height difference and cannot truly and accurately reflect the test indicators.

After lifting the slump cylinder, when measuring the height difference between the height of the cylinder and the highest point of the cement concrete cone after the collapse, the horizontality of the scale scale or the verticality of the scale scale is a visual (gesturing) method, which is very random. The reading of the difference between the scale and the height of the cement concrete cone is not intuitive, and the reading error is also relatively large. It is difficult to accurately measure the slump within the required 1mm.

The operating space is small and the environment is poor. The slump cylinder is fixed by the pedals on both sides of the human foot, and the operating space of the personnel is relatively fixed. At the same time, when loading materials and inserting a tamping rod to tamp the cement concrete mixture, the pollution to human clothing is large, and the operation is extremely difficult. convenient.

Utility model content

The utility model improves the existing cement concrete slump measuring cylinder, and aims to provide a cement concrete slump measuring device with simple structure, convenient operation and high accuracy.

The utility model adopts the following technical solutions: a cement concrete slump measuring device, including a cylinder body, a bottom plate and a measuring device, the cylinder body and the bottom plate are connected by bolts; the measuring device includes a vertical benchmark, a horizontal scale and a steel Ruler; the vertical pole and the steel ruler are parallel to the central axis of the cylinder and on the same plane, vertically arranged on the bottom plate, and the horizontal scale is sleeved on the vertical pole.

In the utility model, a connecting block is welded at the bottom of the cylinder body, and bolt holes are arranged on the connecting block, and the bolts are fixedly arranged on the bottom plate by welding.

In the utility model, two handles are arranged on the cylinder body.

In the utility model, the vertical pole and the steel rule are welded on the bottom plate, and the horizontal scale can be rotated on the vertical pole.

The bottom plate in the utility model is a standard steel plane plate, and the cylinder body and the bottom plate are connected by bolts. The cylinder body is a frustum-shaped tube shaped product made of thin steel plate or other metals, and its inner wall is smooth. Two handles are installed at two-thirds of the height outside the slump cylinder to facilitate lifting the cylinder after tamping the cement concrete. At least two connecting blocks are welded symmetrically to the axis of the cylinder at the lower end of the cylinder, and bolt holes are provided to facilitate fixing the cylinder by bolts. Both the vertical pole and the steel ruler are welded and fixed on the bottom plate, and are kept perpendicular to the bottom plate. The horizontality of the scale scale and the verticality of the scale scale are fixed. The reading of the difference with the height of the cement concrete cone is intuitive, which can reduce the arbitrariness of visual inspection, and the slump measurement accuracy can reach within 1mm.

In summary, the utility model is a cement concrete slump measuring device with simple structure, convenient operation and high accuracy.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is a left view of the utility model.

Fig. 3 is a top view of the utility model.

Symbols in the figure: 1-cylinder, 2-handle, 3-steel ruler, 4-bottom plate, 5-bolt, 6-connecting block, 7-vertical pole, 8-horizontal ruler, 9-collar, 10-nut.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

Referring to Fig. 1, a connecting block 6 is welded at the bottom of the cylinder body 1, and a bolt hole is provided on the connecting block 6, and the bolt 5 passes through the bolt hole and cooperates with the nut 10 to fix the cylinder body 1 and the bottom plate 4, and the bolt 5 is welded and fixed on the On the bottom plate 4, two handles 2 are arranged on the cylinder body 1. Referring to Fig. 2 and Fig. 3, the vertical pole 7 and the steel ruler 3 are parallel to the central axis of the cylinder body 1 and on the same plane, and are arranged on the bottom plate 4 by welding. Rotate on mark pole 7, keep and vertical on horizontal ruler 8 and vertical mark pole 7.

The process of detecting the slump of cement concrete is as follows: First, the cylinder body 1 and the bottom plate 4 are fixedly connected by bolts 5, then the cement concrete to be tested is put into the cylinder body and compacted, after the cement concrete is filled and leveled, pass the horizontal One end of the ruler 8 is in contact with the highest point of the cylinder body to obtain the height of the cylinder body 1; the cylinder body 1 is lifted by the handle 2, and the cement concrete to be tested will slump due to its own weight. Move the horizontal ruler 8 up and down, put one end of it in contact with the highest point of the cement concrete test body after the collapse, and point the other end to the steel ruler 3, and take a direct reading, that is, the height of the cement concrete test body after the collapse, the cylinder body and the cement concrete test body after the collapse The height difference of the test body is the slump of the cement concrete. Since the moisture in cement concrete is easy to lose, the whole testing process needs to be completed within 5 minutes.

Claims (6)

1. A cement concrete slump measuring device, comprising a cylinder, a base plate and a measuring device, is characterized in that: the axis of the cylinder is perpendicular to the base plate and is fixedly connected with the base plate; the measuring device comprises a vertical benchmark, a horizontal Scale and steel ruler; the vertical pole and steel ruler are vertically arranged on the bottom plate and on one side of the cylinder, the axes of the vertical pole and steel ruler are on the same plane as the axis of the cylinder, the A collar matching the cross-section of the vertical pole is provided on the horizontal scale and fitted on the vertical pole. 2. A kind of cement concrete slump measuring device according to claim 1, characterized in that: the cylinder and the base plate are fixedly connected by bolts, and on the outer surface of the bottom of the cylinder, the cylinder is At least two connecting blocks are welded symmetrically about the axis, and bolt holes are arranged on the connecting blocks, and the cylinder body and the bottom plate are connected as a whole through bolts inserted in the bolt holes. 3. A kind of cement concrete slump measurement device according to claim 2, is characterized in that: one end of described bolt is welded and fixed on described base plate. 4. A kind of cement concrete slump measuring device according to claim 3, is characterized in that: Two handles are provided on the cylinder. 5. A kind of cement concrete slump measurement device according to claim 4, is characterized in that: described vertical mark pole and steel ruler are vertically arranged on described base plate by welding. 6. A kind of cement concrete slump measuring device according to claim 5, is characterized in that: the collar on the described horizontal scale can be rotated on the described vertical mark.

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