ε_t=Lt-Lo/L×100%

式中ε_t——试件在龄期时间的纵向限制膨胀率或纵向限制干缩率（%）

L——试件基本长度（300mm）

Lo——时间长度的初始读数（mm）

Lt——试件在龄期t时的长度读数（mm）
补偿混凝土收缩膨胀仪诚信厂家参数规格

1、标准棒长度：L=355   0.02mm

2、测量范围：0-10mm【电子数显】

3、试模规格：100×100×400mm【限制收缩实验】

4、测量精度：0.001mm

品质保证
 

售后服务承诺书

After-sales service commitment

尊敬的用户您好：

Esteemed Customers

非常感谢您选用献县鹏翼建筑仪器厂产品，营业执照注册号：92130929MA0936YT18我们将尽心尽力地为您作好售后服务。为了让您能得到快速、满意的服务，我厂本着“诚信经营，稳步发展，与时俱进”的经营理念和以诚信服务营造客户放心选择的服务宗旨，现作出并实行如下承诺：

Thank you very much for choosing the products of Xian County Pengyi construction instrument factory, business license registration number: 92130929MA0936YT18, we will do our best for you after-sales service. In order to provide you with the fastest ａnd most satisfactory service, our factory is in line with the business philosophy of "honest operation, steady development, keeping pace with the times" ａnd the service tenet of building customers＇ safe choice with honest service. We are making ａnd implementing the following commitments:

一、产品本厂承诺所有的系列产品，严格按照国标、部标标准组织生产，并承诺所提供的产品是全新的未曾使用过的，从原材料进厂到设备出厂都经过严格的和完善的检验。

Our factory promises that all series of products will be produced in strict accordance with the National Standard ａnd the ministry standard, ａnd that the products will be brand-new ａnd unused, from the raw materials into the factory to the equipment factory after strict ａnd perfect inspection.

补偿混凝土收缩膨胀仪诚信厂家