A method for measuring the adsorption performance of machine-made sandstone powder

A technology of adsorption performance and machine-made sand, which is applied in the direction of removing certain components and weighing, etc., can solve the problems of high requirements for test operators, environmental pollution by operators, and low test efficiency, and achieves low requirements for experimental operators and operation. Strong feasibility and distinct effect
CN108645747BInactive Publication Date: 2021-02-09CHINA ACAD OF BUILDING RES +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ACAD OF BUILDING RES
Publication Date
2021-02-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for measuring the adsorption performance of machine-made sandstone powder, which belongs to the technical field of civil engineering materials. Including: drying the machine-made sand to constant weight, adding a stone powder sieve for grading and sieving, and taking the stone powder at the bottom of the sieve for use; through the fluidity test of the mortar, it is determined that the fluidity of the benchmark group reaches the specified range at a low water-binder ratio The amount of water reducing agent; add the above-mentioned sieve bottom stone powder to the specified amount, carry out the mortar fluidity test according to the mortar mix ratio of the reference group, measure the fluidity of the rubber sand in the experimental group, and calculate the fluidity ratio according to the formula. Compared with the MB value of machine-made sand methylene blue, the assay method of the present invention has the characteristics of high efficiency, simple requirements for instruments and equipment, strong operational feasibility, and obvious distinction of test results, and the measurement results can better reflect whether the machine-made sand powder is There is an overall index of expansive clay minerals and their content, which has a better guiding role in controlling the content of mechanism sand and gravel powder.
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Description

technical field

[0001] The invention relates to a method for measuring the adsorption performance of machine-made sandstone powder, which belongs to the technical field of civil engineering materials. Background technique

[0002] In recent years, the scale of civil engineering infrastructure construction in my country is huge, and high-quality river sand resources are increasingly scarce. Manufactured sand resources are abundant, quality controllable, and low in cost, and have been widely used in my country. With the enhancement of environmental protection awareness, the mineable river sand resources are getting less and less, and the machine-made sand will be more widely used in our country.

[0003] The adsorption performance of stone powder with a particle size of less than 75 μm in machine-made sand is an important technical index for evaluating the performance of machine-made sand. At present, the relevant machine-made sand standards in my country generally use the tes...

Claims

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