Detection method for content of chloridions in sand for transmission line engineering foundation concrete

Abstract

The invention relates to a detection method for the content of chloridions in sand for transmission line engineering foundation concrete. The detection method comprises the following steps: Step S1, putting a sand sample in a set volume into a first transparent barrel body; Step S2, pumping distilled water in a second transparent barrel body into the first transparent barrel body through a water pump, and stirring the sand sample through a stirring shaft to dilute the chloridions in the sand sample; Step S3, dropping potassium chromate in a set volume into a third space, dropping silver nitrate into the third space to allow the silver nitrate to react with chlorides in the distilled water to generate white silver chloride sediments, wherein the potassium chromate is used as an indicator; when all the chloridions in the distilled water react with the silver ions, superfluous silver nitrate and potassium chromate generate erythrine silver chromate sediments, thus completing the reaction;and Step S4, reading data on a first metering switch, a second metering switch and a third metering switch to obtain the content of the chloridions. The detection method can obtain the content valueof the chloridions in the sand for concrete.

Description

technical field [0001] The invention relates to the field of power transmission line engineering, in particular to a method for detecting chloride ion content in sand used for foundation concrete of power transmission line engineering. Background technique [0002] The economically developed areas in the southeast coast of my country have a large demand for construction sand. At the same time, as the society pays more and more attention to environmental issues, relevant state departments have begun to restrict sand mining activities in rivers, etc., and the supply of construction sand is becoming more and more. Due to tension, a certain degree of "sand shortage" has appeared in many places. At present, the company's procurement of basic raw materials is only cement and steel bars, and the sand for concrete is purchased by subcontractors themselves. In some areas, there is widespread monopoly supply of basic raw materials by local forces. In addition, the distribution of conv...

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Problems solved by technology

[0004] At present, the screening of concrete sand on the construction site only depends on "earth experience" such as visual inspection, hand touch, and mouth taste, while the identification of the chloride ion (Cl-) content of concrete sand needs to be sampled and sent to a professional laboratory for inspection, and there is a long cycle of results. , high test costs, etc., and it is impossible to supervise all transshipped construction sand

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