How to identify concrete accelerator quality is good or bad for every building materials enterprises are important things, in order to be able to let the vast number of friends can better understand and master the identification method, in this small series will be to identify the control concrete accelerator quality of the four methods in about.
1, the benchmark sample preparation: reference sample is offerred by the company, hands over preserves by the plant, the reference sample necessary preserved intact, keep dry, by the person responsible for the custody, prohibit indiscriminate sprinkle, misplacing, ban at random to the increased any substance. If there is a reference sample of inaccurate back, active contact the company, by the company for the supply of.
2, check with cement: check with cement by the plant their own procurement, customer specified cement type was supplied by the customer, check with cement necessary preserved intact, keep dry, by the person responsible for the custody, prohibit indiscriminate sprinkle, misplacing, ban at random to the increased any substance. Check with cement should be replaced frequently, should avoid placing too long and the cement test data is inaccurate.
3, test equipment:
(1), (2), coagulation time stopwatch tester
(3) electronic balance test equipment should adhere to clean, neat, accurate, before each test to carry out the calibration of the instrument, to avoid the error caused by the data distortion.
4, test methods: concrete accelerator examination should be strict according to national standard jc477-2005 shown in normative approach are examined. The weighing goods to achieve accurate, mixing uniformly, the moment into the mold to be fast, the best control in about 30 seconds, the longest not more than 50 seconds.