JPH11147005A - Degassing method of inorganic hydraulic substance or kneaded material - Google Patents

Abstract

(57) [Problem] To easily remove bubbles of an inorganic hydraulic substance or a kneaded material in a short time. A method for degassing an inorganic hydraulic substance or a kneaded material by applying ultrasonic waves to a sample of an inorganic hydraulic substance or a kneaded material in a liquid to remove bubbles in the sample.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to deaeration of a sample of an inorganic hydraulic substance or a kneaded material in a liquid.

[0002]

2. Description of the Related Art Conventionally, when measuring the apparent mass in water of a sample such as an inorganic hydraulic kneaded material or a constituent material of the inorganic hydraulic kneaded material, if these samples contain bubbles, an error occurs in the measured value. It is necessary to remove air bubbles from the sample (degas).

[0003] In the conventional degassing method, air bubbles are removed by placing a sample in a closed container and reducing the pressure around the sample by a pump (by a vacuum pump method).

However, the deaeration method by the vacuum pump method is as follows.
Many equipment such as a desiccator, a pump, and a liquid nitrogen for cooling are required, and a long time is required for degassing, which is a factor of prolonging a measurement time of a unit water amount.

[0005]

<A> The present invention resides in a method for easily removing air bubbles from an inorganic hydraulic substance or a kneaded material. <B> The present invention is a method for removing bubbles of an inorganic hydraulic substance or a kneaded material in a short time.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to degassing an inorganic hydraulic substance or kneaded material by applying ultrasonic waves to a sample of the inorganic hydraulic substance or kneaded material in a liquid to remove bubbles in the sample. Method, or when measuring the volume of the inorganic hydraulic substance or kneaded material in the liquid, or the apparent mass, put the sample and liquid of the inorganic hydraulic substance or the kneaded material in a container, stir, and ultrasonically To remove bubbles in the sample by applying, the method of deaeration of the inorganic hydraulic substance or the kneaded material, or in the method of deaeration of the inorganic hydraulic substance or the kneaded material, ultrasonic waves through a container or a propagating liquid A method for degassing an inorganic hydraulic substance or a kneaded material, which is characterized by being applied to a sample.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

<A> Deaeration of inorganic hydraulic substance or kneaded material The deaeration of inorganic hydraulic substance or kneaded material is carried out in a sample of an inorganic hydraulic substance such as cement or an inorganic hydraulic kneaded material such as mortar or concrete. The ultrasonic bubbles are removed by ultrasonic waves. As this liquid, water or oil is used.

For example, after a fixed amount of a sample is collected in a container 2, an approximately equal amount of liquid is added thereto and uniformly mixed, and then, as shown in FIG. 2
The ultrasonic wave is applied using the ultrasonic wave generating device 3. When ultrasonic waves are applied to the sample, bubbles in the sample can be degassed in a short time. The frequency of the ultrasonic wave is, for example, 25 kHz.
A range from z to 150 kHz is used. The time for applying the ultrasonic wave is 0.5 to 20 minutes.

<B> Another Example of Deaeration of Inorganic Hydraulic Material or Kneaded Material Another method of applying ultrasonic waves to a liquid and a sample 1 is to transmit ultrasonic waves efficiently through a propagating liquid 4. it can.

For example, as shown in FIG.
A propagation liquid 4 that is water, oil, or a liquid similar thereto is disposed between the liquid and the container 2. For this purpose, a liquid tank 5 is attached to the ultrasonic generator 3, the propagation liquid 4 is put in the liquid tank 5, and the container 2 containing the liquid and the sample 1 is placed therein.

When ultrasonic waves are generated by the ultrasonic generator 3,
The ultrasonic wave is transmitted to the liquid tank 5 and transmitted to the sample of the inorganic hydraulic substance or the kneaded material via the propagation liquid 4.

<C> Examples of Use of Degassing of Inorganic Hydraulic Material or Kneaded Material Degassing of inorganic hydraulic material or kneaded material is used in various cases. Used to calculate the density of the state in contact with. Alternatively, it is used when calculating the density of the inorganic hydraulic kneaded material in contact with water.

First, the mass of the inorganic hydraulic substance or the kneaded material in the atmosphere is determined. Next, the apparent mass of the inorganic hydraulic substance or the kneaded material in the liquid is determined. At this time, an accurate apparent mass can be obtained by sufficiently removing the gas such as air contained in the inorganic hydraulic substance or the kneaded material in the liquid. Since gas such as air is extracted from the inorganic hydraulic substance or the kneaded substance, the volume of the inorganic hydraulic substance in the liquid is determined, and the mass is divided by the volume to come into contact with the liquid of the inorganic hydraulic substance or the kneaded substance. It is possible to obtain the density of the state where the user is.

[0015]

According to the present invention, the following effects can be obtained. <A> By using ultrasonic waves, bubbles can be easily removed from the inorganic hydraulic substance or the kneaded material in a short time. <B> By using ultrasonic waves, it is possible to reduce work procedures and equipment. <C> Because the ultrasonic generator is easy to carry,
The density and apparent mass of the inorganic hydraulic substance or kneaded material in the solution can be easily measured anywhere.

[Brief description of the drawings]

FIG. 1 is an explanatory view of applying ultrasonic waves to a sample.

FIG. 2 is another explanatory view of applying ultrasonic waves to a sample.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Solution and sample 2 ... Container 3 ... Ultrasonic generator 4 ... Propagation liquid 5 ... Liquid tank

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Norio Marushima Taisei Construction Co., Ltd. 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo

Claims (3)

[Claims] 1. A method for degassing an inorganic hydraulic substance or kneaded material, wherein ultrasonic waves are applied to a sample of the inorganic hydraulic substance or kneaded material in a liquid to remove bubbles in the sample. 2. When measuring the volume or apparent mass of an inorganic hydraulic substance or a kneaded substance in a liquid, a sample of the inorganic hydraulic substance or the kneaded substance and a liquid are placed in a container, and the mixture is stirred. A method for degassing an inorganic hydraulic substance or a kneaded material, which removes air bubbles in a sample by applying a sound wave. 3. The method for degassing an inorganic hydraulic substance or kneaded material according to claim 1, wherein ultrasonic waves are applied to the sample via a container or a propagating liquid. Degassing method of inorganic hydraulic substance or kneaded material.