How long is the test report of the building material? Is there a corresponding national document?
Valid to see the customer's request. The general validity period is one year. No corresponding national documents are valid for a long period of time.
Building materials testing:
This book is with the enterprise, based on the work process of curriculum development and design, to professional activities as the guide, to the ability as the goal, the project prepared for the carrier. Through this book study, you can be familiar with the basic properties of commonly used building materials and technical requirements, at the same time with the building materials testing pilot, witness the quality of the sampling staff and job skills. The contents of the book include: the basic knowledge of building materials and testing, sand and stone technical indicators detection, the main technical indicators of cement testing, concrete admixtures and admixture performance testing, ordinary concrete performance testing, building mortar performance testing, block material quality testing, Steel and steel welding pieces of technical performance testing, waterproof material performance testing, architectural glass technical indicators and testing, construction gypsum products technical requirements and testing, architectural coatings performance testing, a total of 12 projects, using the current standards, norms, Contact practical, simple and practical. Each project has a summary and self-test exercises to help students consolidate their learning outcomes. This book is for vocational colleges construction engineering technology, engineering cost, civil engineering testing technology and civil engineering related materials for teaching materials, but also as engineering and technical personnel, building materials testing job skills training materials or reference books.
