CN201096775Y - A detection device for light material concrete fluid performance and equality - Google Patents

Abstract

The utility model relates to a measuring device for measuring the rheological capability and homogeneity of lightweight aggregate concrete. The measuring device is characterized in that the measuring device comprises an S-shaped flow groove (2), a segregation degree barrel (4) and a bracket (5); the S-shaped flow groove (2) is made of transparent organic glass; the central part of the S-shaped flow groove (2) is a horizontal chute; graduation lines are arranged on the horizontal chute which is 500 mm in length of the S-shaped flow groove (2); a graduation line is arranged at every 100 mm on the horizontal chute; the S-shaped flow groove (2) is arranged on the bracket (5); an active baffle (1) is arranged in the direction perpendicular to the horizontal plane at the upper-end mouth of the S-shaped flow groove (2); the segregation degree barrel (4) arranged right below the outlet of a chute (3) is composed of a top-layer barrel (6), a middle barrel (7), a bottom-layer barrel (8) and a pedestal (9). With simple structure, the measuring device can measure the rheological capability and homogeneity of lightweight aggregate concrete.

Description

A kind of light aggregate concrete rheological property and homogeneous pick-up unit

Technical field

The utility model relates to a kind of light aggregate concrete rheological property and homogeneous pick-up unit.

Technical background

Along with the fast development of China's building trade and the acceleration of infrastructure construction, light aggregate concrete is widely used in all kinds of non bearing structures and major bearing structures with functional characteristics such as its lightweight, high-durability and insulation, sound insulation, antidetonations.The development light aggregate concrete is considered to alleviate dead load, the main path that concrete is developed to lightweight, high-strength direction.In the last few years, light aggregate concrete had all obtained developing by leaps and bounds in worldwide, was widely used in skyscraper, Longspan Bridge and unique construction, had become new growth engines of countries in the world building material industry at present.

But, because light-weight aggregate has porous structure, density is littler than cement slurry, at the high flowability light aggregate concrete, particularly very easily float in the light aggregate concrete and cause the light aggregate concrete laminated segregation, cause construction accident and economic loss, therefore, the homogeneous construction of in advance estimating for light aggregate concrete seems particularly important.

The utility model content

The purpose of this utility model is to provide a kind of light aggregate concrete rheological property simple in structure and homogeneous pick-up unit, and this pick-up unit can detect the rheological property and the homogenieity of light aggregate concrete.

To achieve these goals, the technical solution of the utility model is: a kind of light aggregate concrete rheological property and homogeneous pick-up unit, it is characterized in that it comprises S type flow groove 2, delamination degree bucket 4, support 5, the mobile groove 2 of S type adopts transparent organic glass to make, the middle part of the mobile groove 2 of S type is horizontal chute, on the horizontal chute of the middle minister 500mm of the mobile groove 2 of S type scale mark is arranged, every 100mm has the bar scale mark; The mobile groove 2 of S type is shelved on the support 5, the upper port place of the mobile groove 2 of S type is along being provided with shifting board 1 with the surface level vertical direction, shifting board 1 is positioned at the place ahead of the horizontal chute of the mobile groove 2 of S type, the lower port place of the mobile groove 2 of S type is provided with chute 3, delamination degree bucket 4 be positioned at chute 3 outlet under, the outlet of chute 3 is less than the internal diameter of delamination degree bucket 4; Delamination degree bucket 4 is made of top layer bucket 6, middle bucket 7, bottom bucket 8, base 9, be cavity in top layer bucket 6, middle bucket 7, the bottom bucket 8, bottom bucket 8 is shelved on the base 9, and middle bucket 7 is shelved on the bottom bucket 8, on the bucket 7, middle bucket 7 was 1-6 in the middle of top layer bucket 6 was shelved on.

The interior diameter of top layer bucket 6, middle bucket 7, bottom bucket 8 is 200mm, and the height of top layer bucket 6, middle bucket 7, bottom bucket 8 is 100mm, and material adopts steel or cast iron.

Support 5 is square stool subtypes that angle steel or wooden frame are made, and perhaps support 5 is round stool type platforms that angle steel or wooden frame are made.

For real simulation light aggregate concrete layering situation in flow state, adopt the mobile groove of S type, every 100mm has the bar scale mark on the level trough of its long 500mm, horizontal chute left side charging part has movable plate washer, when drawing back shifting board, light aggregate concrete will flow to the right along horizontal chute under the effect of gravity, when the light aggregate concrete mixture flows to distance for 100mm, 200mm, 300mm, 400mm and 500mm in horizontal chute, write down its flowing time and be respectively t ₁₀, t ₂₀, t ₃₀, t ₄₀, t ₅₀(s), the rheological property that reflects the light aggregate concrete mixture with this.

In order to make the light aggregate concrete that goes out from the mobile concentrated flow of S type flow into the delamination degree bucket fully, at its flow export a chute is installed, the outlet of chute is less than the internal diameter of delamination degree bucket, can make the light aggregate concrete that goes out from the mobile concentrated flow of S type flow into the delamination degree bucket fully, at last can be by the homogenieity of delamination degree bucket test light aggregate concrete.

The simple gimmickery of the utility model utilization has solved the homogeneity of light aggregate concrete evaluation problem that always is difficult to fine solution on the engineering, can be in the pumpability and the homogenieity of testing laboratory and building-site scientific evaluation light aggregate concrete, have characteristics such as convenient and practical, simple in structure, accurate, quick, can be used for the homogenieity evaluation of light aggregate concrete and normal concrete.

Description of drawings

Fig. 1 is the structural representation of pick-up unit of the present utility model;

Fig. 2 is the structural representation of the mobile groove of S type of pick-up unit of the present utility model;

Fig. 3 is the exploded view of the delamination degree bucket of pick-up unit of the present utility model;

Among the figure: 1-shifting board, the 2-S type groove that flows, 3-chute, 4-delamination degree bucket, 5-support, 6-top layer bucket, 7-middle bucket, 8-bottom bucket, 9-base.

Embodiment

Embodiment 1:

One, a kind of light aggregate concrete rheological property and homogeneous pick-up unit, it comprises S type flow groove 2, delamination degree bucket 4, support 5, the mobile groove 2 of S type adopts transparent organic glass to make, the middle part of the mobile groove 2 of S type is horizontal chute, on the horizontal chute of the middle minister 500mm of the mobile groove 2 of S type scale mark is arranged, every 100mm has the bar scale mark, is accurate to 5mm; The mobile groove 2 of S type is shelved on the support 5, the upper port place of the mobile groove 2 of S type is along being provided with shifting board 1 with the surface level vertical direction, shifting board 1 is positioned at the place ahead of the horizontal chute of the mobile groove 2 of S type, the lower port place of the mobile groove 2 of S type is provided with chute 3, delamination degree bucket 4 be positioned at chute 3 outlet under, the outlet of chute 3 is less than the internal diameter of delamination degree bucket 4; Delamination degree bucket 4 is made of top layer bucket 6, middle bucket 7, bottom bucket 8, base 9, top layer bucket 6, in ask bucket 7, be cavity in the bottom bucket 8, bottom bucket 8 is shelved on the base 9, middle bucket 7 is shelved on the bottom bucket 8, top layer bucket 6 is shelved on the middle bucket 7, (the middle bucket 7 among Fig. 1 is 2 to middle bucket 7, also can be 1 or 6, determines as required for 1-6 is individual, when middle bucket 7 is 1, delamination degree bucket 4 is 3 layers, and when middle bucket 7 was 6, delamination degree bucket 4 was 8 layers; Top layer bucket 6 is a ground floor).

The interior diameter of top layer bucket 6, middle bucket 7, bottom bucket 8 is 200mm, and the height of top layer bucket 6, middle bucket 7, bottom bucket 8 is 100mm, and material adopts steel or cast iron.Support 5 is square stool subtypes that angle steel or wooden frame are made, and perhaps support 5 is round stool type platforms that angle steel or wooden frame are made.

Two, a kind of light aggregate concrete prescription sees Table 1, during preparation, earlier dry material is dropped into concrete mixer together, stirs 60 seconds, adds mixing water again, continues to stir after 120 seconds, makes and newly mixes light aggregate concrete.

Three, adopt pick-up unit of the present utility model to light aggregate concrete rheological property and homogeneous evaluation procedure, it comprises the steps:

1) preparation of pick-up unit.

2) put down baffle plate 1, light aggregate concrete is poured into the S type groove 2 that flows from the flow upper port of groove 2 of S type, fill until the leading portion of baffle plate 1; Open baffle plate, record light aggregate concrete flowing time, flowing time is designated as t respectively ₁₀, t ₂₀, t ₃₀, t ₄₀, t ₅₀(second), represent the time when the light aggregate concrete mixture flows to distance for 100mm, 200mm, 300mm, 400mm, 500mm in horizontal chute respectively, reflect the rheological property of light aggregate concrete mixture with this.

3) after light aggregate concrete flows groove 2 inflow delamination degree buckets 4 from the S type, delamination degree bucket 4 placed vibrate 30 seconds on the shaking table, then each layer concrete in the delamination degree bucket is taken out respectively, clean out the light-weight aggregate in every layer concrete, dry to weight and weigh, be accurate to 0.1g;

4) theory of variance is set out in the statistics, proposes the notion of delamination degree, and by the following formula (1) of delamination degree, depth counts the score:

$\mathrm{FCD}=\sqrt{\frac{\underset{1}{\overset{n}{\mathrm{\Σ}}}{(1-\frac{W_i}{W})}^2}{n-1}}\×100\%---\left(1\right)$

Wherein: FCD---with the concrete delamination degree of light-weight aggregate quality characterization;

w _i---the quality of light-weight aggregate in the i layer concrete, 1≤i≤5;

W---the mean value of light-weight aggregate quality in all layers;

N---the number of plies of delamination degree bucket, n=5.

Concrete computation process is as follows:

$\mathrm{FCD}=\sqrt{\frac{\underset{1}{\overset{n}{\mathrm{\Σ}}}{(1-\frac{W_i}{W})}^2}{n-1}}\×100\%=\sqrt{\frac{{(1-\frac{W_1}{W})}^2+{(1-\frac{W_2}{W})}^2+{(1-\frac{W_3}{W})}^2+{(1-\frac{W_4}{W})}^2+{(1-\frac{W_5}{W})}^2}{5-1}}\×100\%$

$=\sqrt{\frac{{(1-\frac{2300}{2500})}^2+{(1-\frac{2400}{2500})}^2+{(1-\frac{2500}{2500})}^2+{(1-\frac{2600}{2500})}^2+{(1-\frac{2700}{2500})}^2}{4}}\×100\%$

$=6.3\%$

Test findings sees Table 1.

Table 1

Concrete mix (kg/m 3)	Cement	Slag powders	Flyash	Haydites of book structure	River sand	Pumping admixture	Water reducer	Water
									200	120	100	790	610	1.26	3.52	253
	Test findings	Time	t 10	t 20	t 30	t 40	t 50	Success pumping height
2s										4s	6s	8s	10s	180m
			FCD	6.3％

Annotate: haydites of book structure is 800 grades.

Claims (3)

1. a light aggregate concrete rheological property and homogeneous pick-up unit, it is characterized in that it comprises S type flow groove (2), delamination degree bucket (4), support (5), the S type groove (2) that flows adopts transparent organic glass to make, the flow middle part of groove (2) of S type is horizontal chute, the S type flows has scale mark on the horizontal chute of middle minister 500mm of groove (2), and every 100mm has the bar scale mark; The S type groove (2) that flows is shelved on the support (5), the S type flows the upper port place of groove (2) along being provided with shifting board (1) with the surface level vertical direction, shifting board (1) is positioned at the place ahead of the horizontal chute of the mobile groove (2) of S type, the flow lower port place of groove (2) of S type is provided with chute (3), delamination degree bucket (4) be positioned at chute (3) outlet under, the outlet of chute (3) is less than the internal diameter of delamination degree bucket (4); Delamination degree bucket (4) is made of top layer bucket (6), middle bucket (7), bottom bucket (8), base (9), top layer bucket (6), middle bucket (7), bottom bucket are cavity in (8), bottom bucket (8) is shelved on the base (9), middle bucket (7) is shelved on the bottom bucket (8), on the bucket (7), middle bucket (7) was 1-6 in the middle of top layer bucket (6) was shelved on.

2. a kind of light aggregate concrete rheological property according to claim 1 and homogeneous pick-up unit, it is characterized in that: the interior diameter of top layer bucket (6), middle bucket (7), bottom bucket (8) is 200mm, the height of top layer bucket (6), middle bucket (7), bottom bucket (8) is 100mm, and material adopts steel or cast iron.

3. a kind of light aggregate concrete rheological property according to claim 1 and homogeneous pick-up unit is characterized in that: support (5) is the square stool subtype that angle steel or wooden frame are made, and perhaps support (5) is the round stool type platform that angle steel or wooden frame are made.

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