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. Hardness refers to the degree of hard material surface is resistant to other objects carved, pressed into the surface of its capabilities. Hardness of bond between the molecular bonds of the material related to highway pile testing, generally larger covalent bonding, ionic bonding and some metal-bonded material hardness. Hardness greater wear resistance is higher, but difficult to process. In engineering, often using the relationship between hardness and strength of materials, indirect test material strength. 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. Superabsorbents depends not only on the material itself hydrophilic, but also its size and pore characteristics related to porosity. General porosity, the stronger the water absorption. Closed pores, water can not enter; coarse pores open, pile testing, easy to suck water; with many tiny pores opening material, its water absorption capacity particularly strong. Absorption of various materials vary widely, such as: dense granite mass water absorption of 01% ~ 07%; ordinary concrete of 2% to 3%; ordinary clay brick is 8% to 20%; and wood quality water absorption and other lightweight materials often greater than 100%. Water has many adverse effects on the material, pile testing and acceptance, it increases the apparent density of the material, thermal conductivity enhancement, lower intensity, volume expansion, vulnerable to frost damage, water absorption and therefore the material is unfavorable. In construction projects often apply some hydrophobic materials to reduce water absorption base material of construction sites, so as to achieve the purpose of waterproof. Absorbent material refers to the nature of the material to absorb moisture in humid air, the size of hygroscopic moisture content expressed. Pile testing | Henan malpractice testing | pile testing program provided by the Construction Engineering Testing Co., Ltd. Henan malpractice. Pile testing | Henan malpractice testing | pile testing program 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 call Tel or pictures on this page, for the latest information, contact: Wang Wei.