Beijing Naijiu Weiye Technology Co., Ltd products

Chloride ion is one important factor to induce reinforcement corrosion. In order to avoid premature reinforcement corrosion, chloride ion in the concrete raw material must be controlled very strictly. The related standards in our country have clear requirements to test chloride ion when chooses the raw materials, such as the matching sand, aggregate concrete, cement and admixture, mixing water, fundamentally avoid adding excessive chloride ion into the concrete. The test of the chloride ion content in concrete structure plays a significant role for the evaluation of the structure safety, and provides the extreme reference value basis for the renovation and repair of the old structure at the same time.

Chloride ion is one important factor to induce reinforcement corrosion. In order to avoid premature reinforcement corrosion, chloride ion in the concrete raw material must be controlled very strictly. The related standards in our country have clear requirements to test chloride ion when chooses the raw materials, such as the matching sand, aggregate concrete, cement and admixture, mixing water, fundamentally avoid adding excessive chloride ion into the concrete. The test of the chloride ion content in concrete structure plays a significant role for the evaluation of the structure safety, and provides the extreme reference value basis for the renovation and repair of the old structure at the same time.

The FBG Hydrostatic Level Sensor is a high-precision pressure monitoring system designed to measure the relative settlement of multiple points. In application, a series of FBG sensors are connected by connecting pipes. The pressure of each measuring point is measured by the sensor. Each sensor is composed of a pressure measuring fiber grating and a temperature measuring fiber grating. The sensor is composed of a sensing film to sense the change of water pressure and transmit it to the pressure grating. The sensor performs temperature compensation to correct the drift of sensor data caused by changes in external temperature.

FBG Earth Load Cell is a new type of optical earth load gauge developed by using high-quality constant elasticity alloy as the load transmitter, and then utilizing the inherent strain sensing characteristics of fiber grating. The Earth Load Cell is suitable for measuring soil stress in building foundations such as earth-rock dams, breakwaters, revetments, quay walls, high-rise buildings, pipeline foundations, bridge piers, retaining walls, tunnels, subways, airports, highways, railways, and anti-seepage wall structures, as well as the measurement of freezing force in glacier frozen soil. Earth Load Cell has the advantages of good stability, suitable for long-term monitoring, etc., and comes with self-temperature compensation.

Application: used to test concrete resistivity by Wenner sensor array (50 mm spacing)

Application: used to test the degree of steel-bar corrosion by electrochemical method. Standard: GB 50204-2015 Code for quality acceptance of concrete structure construction. GB/T 50344 -2004 Technical standard for inspection of building structure.

It is used to determine the permeability coefficient of sandy soil and non-cohesive soil with a small amount of gravel in the permeability test under constant water head.

HWY-501B thermostatic water bath is designed to supply the standard constant temperature  water bath for factory,enterprise,construction organization,research laboratory and colleges&universities etc.The instrument temperature control range(Room temperature+5)?~70?,adopts the LCD display high precision temperature controller,with convenient operation,low noise and high precision temperature control etc.advantages.

HWY-2 thermostatic water bath is designed to supply the standard constant temperature water bath for factory,enterprise,construction organization,research laboratory and colleges&universities etc.The instrument adopts the new-type refrigeration compressor unit with good effective cooling,low noise,is widely welcome by operators of test units and laboratories.It has big volume,high precision temperature control,and is especially suitable to use in highway engineering laboratories.