Visual cement paste gelling strength monitoring device and method for retaining wall

Abstract

The invention relates to a visual cement paste gelling strength monitoring device and method for a retaining wall.The cement paste gelling strength monitoring method comprises the steps that a pressurized and heated fluid is used for providing controllable pressure and temperature for a reaction kettle containing cement paste so as to simulate the temperature and pressure state of the cement paste under a corresponding stratum; after the cement paste is set and hardened for a preset time, fluid is applied to the pressurizing pipeline extending into the cement paste; a fluid pressure value P at the same time is recorded according to the form change of the cement paste at the pipe orifice observed through the window of the reaction kettle. The cement paste gelling strength monitoring device comprises a reaction kettle which is provided with a pressure cavity for accommodating cement paste, wherein the top of the reaction kettle is connected with a pressure chamber; a heating part which is used for providing heat energy for the reaction kettle, wherein a pressure chamber at the top of the reaction kettle is connected with an input pipeline used for injecting pressurized fluid into the pressure chamber, the side face of the reaction kettle is connected with at least one first measuring pipe configured to stretch into cement paste, and the reaction kettle is provided with a first visual window corresponding to the first measuring pipe.

Description

technical field [0001] The invention relates to the technical field of cement slurry gel strength monitoring, in particular to a visual cement slurry gel strength monitoring device and method for retaining walls. Background technique [0002] A retaining wall refers to a structure that supports roadbed fill or hillside soil and prevents the deformation and instability of fill or soil. In the cross section of the retaining wall, the part directly in contact with the supported soil is called the back of the wall; the part opposite to the back of the wall is called the wall; the part in direct contact with the foundation is called the base; The top surface of the wall is called the top of the wall; the front end of the base is called the toe of the wall; the rear end of the base is called the heel of the wall. According to different protection requirements, retaining walls can be divided into gravity retaining walls, anchor retaining walls, thin-wall retaining walls, reinforce...

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the existing devices or methods for testing cement bond strength indoors, such as: (1) lack of simulation methods for the pressure and temperature state of the in-situ formation, and the final experimental data is not convincing, so it cannot Accurately and effectively provide comprehensive experimental data support for on-site construction; (2) The process of the experiment is often invisible, because it is impossible to observe the microscopic state changes of the cement slurry in each setting period, so it is impossible to detect any hydration moment of the cement slurry Therefore, the final evaluation result of the cement slurry coagulation quality is also inaccurate

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