沥青混合料弯曲蠕变试验仪是检测仪器，适用于测定沥青混合料的试件在规定的温度和加载应力水平条件下弯曲蠕变的应变速率，评价沥青混合料的变形性能。
Asphalt mixture bending creep tester is a testing instrument, which is suitable for measuring the strain rate of bending creep of asphalt mixture specimens under the conditions of specified temperature and loading stress level, and evaluating the deformation performance of asphalt mixture.
沥青混合料弯曲蠕变试验仪符合中华人民共和国行业标准：JTG E20 — 2011/T 0728—2000。
Asphalt mixture bending creep tester Meets the industry standard of the People's Republic of China: JTG E20 — 2011 / T 0728 — 2000.
沥青混合料弯曲蠕变试验仪主要特点：
★液晶屏显示位移及时间关系曲线。
★并自动判断试验结果。
★自动控制整个试验过程(包括:加载、保护、试验、判断及卸载).
★设置电脑接口,通过电脑打印曲线及结果。
★具有分段采样功能。采样速率:在开始加载后的10秒内,采样速率不小于100HZ;此后5min 不小于1 HZ; 然后以不小于0.2HZ至试验结束。
★液晶屏显示位移及时间关系曲线。并自动判断试验结果。
★设置电脑接口,通过电脑打印曲线及结果。
★自动控制整个试验过程(包括:加载、保护、试验、判断及卸载)
★具有水循环系统,保证温度均衡。
★加载形式采取垂直加载避免了结构不合理造成的载荷不恒定的弊端，性能可靠。
Main Features of Asphalt Mixture Creep Tester:
★ LCD screen shows displacement and time curve.
★ And automatically judge the test results.
Automatically control the entire test process (including: loading, protection, testing, judgment and unloading).
★ Set up a computer interface to print curves and results through a computer.
★ With segmented sampling function. Sampling rate: within 10 seconds after the start of loading, the sampling rate is not less than 100HZ; thereafter 5min is not less than 1HZ; then it is not less than 0.2HZ until the end of the test.
★ LCD screen shows displacement and time curve. And automatically judge the test results.
★ Set up a computer interface to print curves and results through a computer.
★ Automatically control the entire test process (including: loading, protection, testing, judgment and unloading)
★ With water circulation system to ensure temperature equilibrium.
★ The loading form adopts vertical loading to avoid the disadvantages of unsteady load caused by irrational structure and reliable performance.
沥青混合料弯曲蠕变试验仪技术参数:
★大载荷及精度:30kg±5g
★位移测量范围及精度:0～20mm±0.01mm。
★控温范围及精度: 60℃～-20℃±0.1℃。
★时间测量范围及精度:0-60min±1S。
★外形尺寸:880×480×1000mm。
★环境温度：≤30℃。
★相对湿度：≤85%。
★整机功耗：2KW。
★仪器净重：130kg
★电源电压：220v
Technical parameters of asphalt creep tester:
★ High load and accuracy: 30kg ± 5g
★ Displacement measurement range and accuracy: 0 ～ 20mm ± 0.01mm.
★ Temperature control range and accuracy: 60 ℃ ～ -20 ℃ ± 0.1 ℃.
★ Time measurement range and accuracy: 0-60min ± 1S.
★ Dimensions: 880 × 480 × 1000mm.
★ Ambient temperature: ≤30 ℃.
★ Relative humidity: ≤85%.
★ Whole machine power consumption: 2KW.
★ Net weight of the instrument: 130kg
★ Power supply voltage: 220v
沥青混合料弯曲蠕变试验仪操作规程：
★将试件从恒温水槽中取出，立即对称安放在支座上，试件上下方向应与试件成型时方向一致。高温弯曲蠕变试验必须在恒温水槽中进行，低温弯曲蠕变试验可在恒温水槽或试验机的环境箱中进行。
★将荷载传感器、位移计与数据采集系统或双笔X-Y记录仪连接，以X轴为时间轴，Y轴记录荷载（Y1）及位移（Y2），选择适宜的量程后调零。
★在梁跨正中间安放位移测定装置，跨中挠度可以用LVDT、电测百分表测定。位移计支座固定在试验机机身上。位移计测头支于试件跨中中间（1个位移计）或两测（用2个位移计）。位移计有效量程应大于预计的大挠度的1.2倍。当采用X-Y记录仪，为正确地从曲线读取数据，在开始加载后的60s内，记录仪的走纸速度（或扫描速度）宜不小于100mm/min，直至试验结束宜不小于10m
Asphalt mixture bending creep tester operating procedures:
★ Take the test piece out of the constant temperature water tank and immediately place it symmetrically on the support. The up and down direction of the test piece should be the same as the direction of the test piece when it is formed. The high temperature bending creep test must be performed in a constant temperature water tank, and the low temperature bending creep test can be performed in a constant temperature water tank or an environmental box of a testing machine.
★ Connect the load sensor and displacement meter to the data acquisition system or double pen X-Y recorder, take the X axis as the time axis, and record the load (Y1) and displacement (Y2) on the Y axis. Select the appropriate range and adjust it to zero.
★ Displacement measuring device is placed in the middle of the beam span. The mid-span deflection can be measured by LVDT and electric dial indicator. The displacement meter support is fixed on the testing machine body. The displacement measuring head is supported by the middle of the test piece (1 displacement meter) or two measurements (using 2 displacement meters). The effective range of the displacement meter should be greater than 1.2 times the expected large deflection. When using X-Y recorder, in order to read data from the curve correctly, the paper feeding speed (or scanning speed) of the recorder should be not less than 100mm / min within 60s after the start of loading, and it should be not less than 10m until the end of the test.
