Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, is one of the qualification place in Henan Province since the first detection through examination of business. Business in the Pile qualification qualification, the qualification grade steel, a qualified indoor environment, building energy efficiency testing, subject testing, materials testing, curtain detection, detection of roads and bridges, air defense projects to detect a number of test qualification and testing laboratories. ① measured elongation will have to pull off the ends of the specimen aligned breaks, Yongcheng main structural inspection, as far as possible so that its axis is located on a straight line. Pull off such a gap is formed at a variety of reasons, this gap should be included in the specimen fractured the inner part of the gauge length. ② such as when to pull off at the end of the gauge near distance greater than l0 / 3, the main structure detection, can directly measure out has been stretched caliper gauge length l1 (mm). ③ such as pulling off at the end to close the distance gauge is less than or equal to l0 / 3, the main structure of Yucheng detected displacement may determine l1 following method: length, beam garden detect the main structure, from pull off at O take substantially equal to the short length of the number of cells to obtain B, then take the remaining segment length equal to the number of cells (a)) of the half to give C point; or take the remaining number of cells (odd number, minus 1 and plus 1 of the half, get C and C1 point. l1 shifted respectively AO + OB + 2BC or AO + OB + BC + BC1. As direct measurements obtained elongation can reach a predetermined value and technical conditions, you can not use the shift method .④ as specimen gauge endpoint on or gauge at fault, the test result is invalid and should be retested. Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, Henan Province since the first qualification place in one of the detection business assessment. Qualification business including pile qualification, the qualification grade steel, an indoor environmental qualification, building energy efficiency testing, subject testing, materials testing, curtain detection, detection of roads and bridges, air defense projects to detect a number of test qualification and testing laboratories. Pozzolanic material Many varieties of natural volcanic ash, tuff, pumice, zeolite rock, diatomaceous earth and diatoms stone; artificial are calcined coal gangue, shale burning, burning clay, cinder, siliceous slag and other national standards. " for cement Pozzolanic material "(GB / T47-2005) provides Pozzolanic material SO3 content shall not exceed 3%; pozzolan test must be qualified; mixed with 30% Pozzolanic material in cement mortar 28d 65 compressive strength of Portland cement mortar 28d compressive strength ratio of not less than 062. For artificial Pozzolanic material, but also the provisions of its loss on ignition shall not exceed 10%. Liangyuan main body structure detection _ price structure detection _ malpractice detected by the increasing prevalence of Construction Engineering Testing Co., Ltd. Henan Henan malpractice Construction Engineering Testing Co., Ltd. (www.hnrsjc.cn) (www.rsgcjc.com) strong, credible, in Zhengzhou, Henan Province construction industry has accumulated a large number of loyal customers. The company better work attitude and continuously improve innovative ideas will lead malpractice detection into the brilliant and you work for a better future!