(50119-2013 GB) is a revision of the original national standards for the application of concrete admixtures (50119-2003 GB), which was formally implemented in March 1, 2014. The first third chapters of the provisions of the provisions of the mandatory provisions of the 3.1 sections of the admixture, 2 increase in the poly carboxylic acid system of high performance water reducer, and the technology content; 3 amendments to each chapter, "variety", "construction", increase the compatibility of various types of concrete admixtures, increase the consistency of the addition technology in "construction", increase the amount of water. Add up to times during the "construction process." added. Two increase the technology. 4 increase the added. Added technology. Added: "entry into each other." the content of each chapter is: "as the added. 5 added:" entry into each other. "The content includes:" entry test. Added. Added. "Entry into each chapter.". "Entry into each chapter." approach. "As the added. 1 added. Added." entry into each other. "." entry. Added. "Entry into each chapter." approach. ": increase the added.." entry into each chapter. "Approach.": adding. Adding. "Entry. Added." entry into each chapter. "Approach.": increase the added. Added. "Entry into each chapter." approach: "added." entry into each other. Agent of the "technical requirements" content; 6 increase and revise the basic provisions of the amendments to the ordinary water reducer, early strength The mandatory provisions of the agent, antifreeze, and waterproofing agent, etc., the 7 amendment of appendix A test method, using mortar expansion method to replace the cement paste fluidity method.
Asked the city's ready mixed concrete enterprise organization related technical personnel, seriously study the concrete admixtures application technology standard "(GB 50119-2013), the standard additive approach test, the strict implementation of the relevant provisions of the specification, especially boldface marks the mandatory provisions, to ensure that qualified additives used in construction projects in our city.
