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Monitoring setting and hardening characteristics of cement and similar - using measuring chamber with two electro-acoustic transducers having opposed emitting and receiving surfaces
Monitoring setting and hardening characteristics of cement and similar - using measuring chamber with two electro-acoustic transducers having opposed emitting and receiving surfaces
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机译:使用带有两个具有相对发射和接收表面的电声换能器的测量室,监控水泥等的凝结和硬化特性
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摘要
A cell for acoustically monitoring the condition of a material which passes from a liq. or paste-like state to the solid state, comprises a cell body defining a measuring chamber, two electro-acoustic transducers, having planar, mutually opposed emitting and receiving surfaces, mounted in the measuring chamber, and two end portions constituting two opposed passages adapted to receive a removable sealing plug. As cement sets and progressively hardens, both the transit time and the attenuation of acoustic pulses transmitted through the cement decrease. The pressure on the cement may be controlled by a membrane and its temp. may be measured by a thermocouple.
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