Why to detect unqualified prestressed pipe pressure slurry

Prestressed pulp slurry pipeline pressure testing of prestressed pipe pressure test of prestressed pipe pressure JTG/TF50 - paste manufacturer 2011 'standard of technical specification for construction of highway bridge of prestressed concrete pipe pressure slurry in some areas were repeatedly unqualified phenomenon. Upon receiving the notification from the customer, our architectural technology co. , LTD. R&d and technology on the scene, to our material site inspection! In supervision of party a, the contractor, under the witness of our staff to recheck, the scene material result to everyone's surprise, no problem, all the indicators qualified! Where is the problem? Accompanied by the three parties, we find the third party testing unit, the detection results of prestressed pipe pressure slurry dispute! The third agency also said testing result is objective, there is no other reason! After negotiation, we do together and makes the material inspection, look at the results! This experiment, the problem came out! Due to JTG/TF50 - 2011 'technical specification for construction of highway bridge standard prestressed pipe pressure slurry mixing, in the standard specified in a minute more than 1000 RPM high speed mixer or pulping machine, they are ordinary net cement slurry mixer, without using high-speed dispersion machine, after some indicators unqualified lead to detection - - - Later not to mention, agreed to send the third party testing institutions, do the report again! Here, note that the JTG/TF50 - 2011 'standard of technical specification for construction of highway bridge of prestressed concrete pipe pressure slurry, must be more to tell the customer USES high-speed pulping machine ( More than 1000 revolutions per minute) 。