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日本最近研制了一种混凝土传感器,在混凝土灌浆作业时,将这种传感器装在模板外侧,即可了解板模内部混凝土的灌注情况。混凝土浇灌作业的关键在于将混凝土振捣密实,不留空隙。灌浆完毕后以木锤敲击模板,凭声音判断混凝土的灌注情况。而这种传感器是利用微电流测知混凝土中所含水份,同时根据发光二极管的发亮情况来显示混凝土的灌注情况。传感器重53g,外形尺寸为2×3×2cm。内装干电池。装设时先在模板上开一个小孔,将感应部件塞人孔内,传感
In Japan, a concrete sensor has recently been developed. When the concrete is grouted, this type of sensor can be mounted on the outside of the stencil to understand the infusion of concrete inside the formwork. The key to concrete watering operations is to vibrate concrete densely and compactly without leaving any gaps. After the grouting was completed, a wooden hammer was used to strike the template and the perfusion of the concrete was judged by sound. This kind of sensor uses the micro current to measure the moisture content in the concrete, at the same time according to the light emitting diode to show the concrete perfusion. The sensor weighs 53g and has an external dimension of 2 x 3 x 2cm. Built-in dry batteries. When installing a small hole in the template, the sensing part is plugged into the hole, sensing