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. Material in the course, will be subject to the natural environment of various factors, pile engineering testing, its performance is gradually reduced, or even destroyed, these damaging effects can be divided into physical, chemical, and biological effects and other effects. Physical effects include dry and wet changes, temperature changes and freezing and thawing and the like. Wet and temperature changes in the material expands and contracts repeatedly can cause the material to crack or even be destroyed. In cold areas, freezing and thawing of the material damage is more serious. Chemical effects include erosion and damage water or gas acid, alkali, salt and other substances to the material. Biological and biochemical effects, refers to a material by insects, fungi and other decay and corrosion. When general mineral materials, such as stone, brick, concrete, etc., exposed to the atmosphere or water level changes in the area, mainly physical destructive effect occurs; when in the water, in addition to the physical effects of chemical erosion may occur. Metal materials, manufacturers pile engineering test center, the main cause of damage is the role of chemical corrosion and electrochemical corrosion. Wood and plant fibers composed of organic material, often due to the biological effect is destroyed. 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. Building mortar test materials should be based on the different requirements of pile foundation engineering test center quickly and can be taken from the same plate or the same vehicle transporting the mortar. When the laboratory sample, can be removed from the mechanical or manual mixing of mortar. The number of samples taken should be more than 1 to 2 times the test materials used.  laboratory mixing mortar material should be consistent with the requirements of the test site materials, and transport into the room in advance, so that the sand to dry; when mixing at room temperature should be (20 ± 5) ℃; if cement agglomeration should be fully mixed, pile construction engineering testing, and through 09mm sieve. Sand should be 5mm through a sieve. Material weighing accuracy requirements are: cement, admixture of ± 05%, sand, lime paste is ± 1%. b mortar mixing ratio by mass calculated with the weighed preparation 5L cement and mortar to dry sand. First weighed into the mix of cement and sand pot dry mix about 15min, then mix shovel to make a recess in the middle of the lime paste weighed into the recess and into the amount of water. Dilute the lime paste, then mixing with cement and sand together, continue successively add water and stir until the mixture was uniform color, workability about empirically observed to meet the requirements, it can carry out consistency test, which normally takes mixing 5min. Pile Foundation Engineering Testing, malpractice detection, detection of pile foundation engineering construction provided by the Construction Engineering Testing Co., Ltd. Henan malpractice. Pile Foundation Engineering Testing, malpractice detection, detection of pile foundation engineering construction is the increasing prevalence of Henan Construction Engineering Testing Co., Ltd. (www.hnrsjc.cn) (www.rsgcjc.com) this year introduced a new upgrade, the above picture is for reference only, please You call Tel picture on this page or to obtain the latest information, contact: Wang Wei.