CGM grout material specification latest cement grouting material application technical specifications ( GB / T50448 - 2015).

CGM grout material specification latest cement grouting material application technical specifications ( GB / T50448 - 2015). Recently, the ministry of housing and urban and rural construction to the national standard 'standard of cement-based grouting materials use skills' ( GB / T50448 - 2015). Effective as of November 1, 2015. On the basis of engineering construction standards for printed and distributed to 2012 standards revised plan tell ( Build the [2012] no. 5) Tell the request by the ministry of housing and urban and rural construction standardization skills committee arranged China metallurgical construction research institute co. , LTD. , a new construction group co. , LTD. Jointly with the relevant planning, construction, supervision and manufacturers of changes to the group, to the national standard 'standard of cement-based grouting materials use skills' GB/T50448 - 2008 amended, expand the homework. Revised group widely collect relevant standards at home and abroad and malls typical commodity characteristics, especially the post-tensioned prestressed duct grouting material, and study the function of these standards for information requests, inspection methods, project planning and construction acceptance of the content, carry on detailed test assignments, conclude that the skills of the standard content and index. Expert group thought together, 'standard' is entirely summarized the Chinese cement grouting materials over the years the discussion results and engineering practice experience, the primary skill index set is reasonable, to the satisfaction of construction need, operational applicability, no serious legacy, has reached the world advanced level. Of the standard, will further promote the development of the cement-based grouting materials, the extend its use area, reduce the gap of cement-based grouting materials in China and the world, gradually with the world standards, grouting materials for China export standard guarantee supply useful skills, lead all grouting career development.