一，全自动冻融试验箱概述：

全自动冻融试验箱是专业混凝土检测仪器，适用于混凝土、建筑砖块、陶瓷砖、外墙砂浆及其它建材的冻融试验，制冷压缩机采用法国泰康节能、环保型涡旋式低温压缩机组，风机为无极调速，可根据环度可根据环境温度从而改变风机的转速。 整体性能稳定，全自动冻融试验箱采用好的不锈钢板，一体式结构，操作简单方便。

First, the automatic freeze-thaw test box overview:
The automatic freeze-thaw test box is a professional concrete testing instrument, which is suitable for the freeze-thaw test of concrete, building bricks, ceramic tiles, exterior wall mortar and other building materials. The refrigeration compressor adopts France Taikang imported energy-saving and environment-friendly scroll-type low temperature. In the compressor unit, the fan is steplessly regulated, and the fan speed can be changed according to the ambient temperature. The overall performance is stable, and the automatic freeze-thaw test chamber is made of high-quality stainless steel plate with integrated structure, which is easy and convenient to operate. It has the characteristics of small footprint and convenient movement. It is the preferred model for building materials enterprises, colleges and universities and testing centers.

二，全自动冻融试验箱符合标准：

GB/T3810-2006陶瓷砖抗冻性试验方法

GB/T2542-2003砌墙砖试验方法

GB/T4111-1997混凝土小型空心砌块试验方法

GB/T11973-1997加气混凝土抗冻性试验方法

JGJ/T70-2009砂浆抗冻性能试验方法

GB/T11973-2006蒸汽加气混凝土砌块试验方法

GB/T11968-2006混凝土小型空心砌块试验方法

GB/T241-1994岩石抗冻性试验方法

Second, the automatic freeze-thaw test chamber meets the standards:
GB/T3810-2006 ceramic brick frost resistance test method
GB/T2542-2003 brick wall test method
GB/T4111-1997 concrete small hollow block test method
GB/T11973-1997 Aerated concrete frost resistance test method
JGJ/T70-2009 mortar anti-freezing performance test method
GB/T11973-2006 steam aerated concrete block test method
GB/T11968-2006 concrete small hollow block test method
GB/T241-1994 rock frost resistance test method

三，全自动陶瓷砖冻融试验箱产品特点：

压缩机、加热部分、电源控制部分均采用进口件，高质量、高性能

满载运转时冻融箱内各点温度极差不超过2℃

仪表自动控制，数据曲线实时动态显示、试验数据自动存储，具有试验意外终断自动恢复功能

安装方便，占地小，低噪音

Third, automatic ceramic tile freeze-thaw test chamber Features:
The compressor, heating part and power control part are all imported parts, high quality and high performance.
The temperature difference between the various points in the freeze-thaw box does not exceed 2 °C when fully loaded
Automatic meter control, real-time dynamic display of data curve, automatic storage of test data, automatic recovery of test accidental termination
Easy installation, small footprint and low noise

四，全自动冻融试验箱技术参数：

五，全自动冻融试验箱使用方法：

试验采用水冻水融法,把符合外观要求的100×100×400的混凝土试件和测温试件放进试件桶中,用17~23℃的水浸泡4天，然后把试件桶放入冻融试验槽中，用循环的冷冻液对试件反复进行降温和升温，周期性地把试件内放的水进行冻结和融化。混凝土试件每做25次冻融循环试验，都要测量1次重量和相对动弹性模量。当相对动弹性模量下降至初始值的60％或质量损失率达5％时，即认为试件已达破坏，并以相应的冻融循环次数作为该混凝土的抗冻等级。如果试件冻融至预定的循环次数，而相对动弹性模量或质量损失率均未达到上述指标，可认为试验的混凝土抗冻性已满足设计要求。根据冻融循环次数及相应的相对动弹性模量可计算出混凝土耐久性系数，供设计选材时参考。因此，在动弹性模量，质量损失率和耐久性系数为评定指标的混凝土抗冻试验中。

Fifth, the use of automatic freeze-thaw test chamber:
The test uses the water-frozen water-melting method, put 100×100×400 concrete specimens and temperature-measuring specimens that meet the appearance requirements into the specimen bucket, soak them in water at 17~23°C for 4 days, then put the specimen bucket The sample is placed in a freeze-thaw test tank, and the test piece is repeatedly cooled and warmed by the circulating freezing liquid, and the water placed in the test piece is periodically frozen and melted. For every 25 freeze-thaw cycles of concrete specimens, the weight and relative dynamic modulus are measured once. When the relative dynamic elastic modulus drops to 60% of the initial value or the mass loss rate reaches 5%, it is considered that the test piece has reached the damage, and the corresponding freeze-thaw cycle number is used as the anti-freeze level of the concrete. If the test piece freezes and freezes to the predetermined number of cycles, and the relative dynamic elastic modulus or mass loss rate does not reach the above index, it can be considered that the tested concrete frost resistance has met the design requirements. According to the number of freeze-thaw cycles and the corresponding relative dynamic elastic modulus, the concrete durability coefficient can be calculated for reference when designing materials. Therefore, in the concrete antifreeze test in which the dynamic elastic modulus, the mass loss rate and the durability coefficient are the evaluation indexes, the device is an essential test device. It can meet the needs of design, research and construction of various related industries at home and abroad.