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Method for measuring cohesiveness of cement-based building mortar

A measurement method and cohesiveness technology, applied in the direction of flow characteristics, measuring devices, instruments, etc., can solve the unfavorable development of the construction industry in the direction of energy conservation and environmental protection, the difficulty of popularizing and applying ready-mixed mortar, and the poor operability of ready-mixed mortar, etc., to achieve The effect of low detection cost, simple and practical measurement method, and easy-to-understand detection results

Active Publication Date: 2014-12-17
四川鑫统领混凝土有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] With the popularity of ready-mixed mortar and the depletion of natural sand resources, most construction projects began to use machine-made sand as the aggregate of ready-mixed mortar. Poor operability of ready-mixed mortar often occurs in the base building mortar, which affects the construction efficiency. At the same time, it brings great difficulties to the popularization and application of ready-mixed mortar, which is not conducive to the development of the construction industry in the direction of energy conservation and environmental protection.
[0008] At present, during the actual construction, the construction performance of the construction mortar can only be transported to the construction site and evaluated by the construction personnel after use, which wastes a lot of time and energy. At the same time, it requires batches of construction mortar and skilled workers. It is greatly affected by subjective factors and can only be provided. Qualitative expression, unable to control in actual production

Method used

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  • Method for measuring cohesiveness of cement-based building mortar
  • Method for measuring cohesiveness of cement-based building mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 Utilizes the process of detection method of the present invention to measure cohesiveness

[0031] 1.1 Preparation of mortar

[0032] 1.1.1 When preparing mortar mixture in the laboratory, the materials used should be transported into the room 24 hours in advance. The temperature of the test chamber should be kept at (20±5)°C during mixing.

[0033] Note: When it is necessary to simulate the mortar used under the construction conditions, the temperature of the raw materials used should be consistent with that of the construction site.

[0034] 1.1.2 The raw materials used in the test should be consistent with those used on site. The machine-made sand should pass through a square hole sieve with a nominal particle size of 4.75mm in advance.

[0035] 1.1.3 When mixing mortar in the laboratory, the amount of materials should be measured by mass. Accurately weigh various materials, and its weighing accuracy: ±0.5% for cement, admixtures, admixtures, etc.; ±...

Embodiment 2

[0058] Embodiment 2 detection application example

[0059] The method of Example 1 was used to detect the average value of the degree of expansion of the cement mortar obtained by preparing the following material proportions, thereby judging its cohesiveness.

[0060] Table 2 Test results of application examples

[0061]

[0062] It can be seen from the above table that the performance of cement mortar can be judged quickly by using the detection method of the present invention, which provides standards for actual production and operation, and facilitates timely improvement of material formula to cope with changes in actual production conditions.

[0063] In summary, the method of the present invention is proposed and established for the first time to evaluate the cohesion of mortar, which provides a standard support for actual production, has strong feasibility and broad application prospects.

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Abstract

The invention relates to a method for measuring the cohesiveness of cement-based building mortar, belonging to the field of cement mortar performance detection. The method is suitable for detection of the building mortar, particularly the building mortar prepared by various types of machine-made sand. The method comprises the following steps of A, preparing the mortar; B, measuring the water use amount of the mortar; and C, measuring the expansion degree of the mortar. According to the measurement method, the target thickness meeting the requirement of actual production is firstly determined by virtue of measurement on the water use amount of the mortar; then the aim of estimating and controlling the cohesiveness of the building mortar is fulfilled by measuring the expansion degree of the mortar, so that a standard support for supplying mortar suitable for building site construction can be achieved in actual production; meanwhile, the operability of directly and objectively estimating the cohesiveness of the mortar can be improved.

Description

technical field [0001] The invention belongs to the field of cement mortar performance detection, and in particular relates to a method for measuring the cohesiveness of cement-based building mortar. The method is suitable for the detection of building mortar, especially for the detection of building mortar prepared from various machine-made sands. Background technique [0002] Construction mortar refers to a construction engineering material that is composed of inorganic cementitious materials, fine aggregates, admixtures, water, and other components determined according to performance, mixed in appropriate proportions, mixed and hardened. It mainly plays the role of bonding, padding and transferring stress. According to the production characteristics of mortar, it is divided into mortar mixed on the construction site and ready-mixed mortar produced by professional production plants. According to the use of mortar in construction engineering, it can be divided into masonry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04G01N11/00
Inventor 封培然
Owner 四川鑫统领混凝土有限公司
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