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Experimental Research on the Physical and Mechanical Properties of Polyamide Latex Mortar

Author: LiuBaoHua
Tutor: LiangJianGuo
School: Hunan Agricultural University
Course: Agricultural Mechanization
Keywords: Building mortar Shrinkage deformation Mechanical Properties Workability Setting time
CLC: TU578.1
Type: Master's thesis
Year: 2006
Downloads: 73
Quote: 0
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Abstract


The exterior wall cracks and leakage is widespread quality problems can not be ignored in the construction work , a very important reason is that ordinary masonry mortar defect in the ability of anti-shrinkage . Chinese in southern climate variability, temperature and humidity alternately obvious, and the large temperature difference between day and night , the exterior plastering surface layer of mortar shrinkage is particularly serious . The use of comparative tests of the subject , in the ordinary cement mortar mixed with different amounts of polyamide latex , study its anti drying shrinkage of mortar performance , technical indicators and on the workability and mechanical properties test . This paper a comprehensive analysis of the test results , and concluded : polyamide latex the impermeable crack resistance as ordinary cement mortar admixtures , when the dosage of 5% , with the same ratio and the exterior surface mortar , cement mortar compression performance and tensile properties are not significantly reduced , it is possible to effectively control the contraction deformation of the mortar , and can increase the shear capacity of the mortar , so that can be well prevented from exterior cracks due to changes in temperature and humidity are alternately ; , latex doped added to enhance the water-holding capacity of the mortar , and the greater the dosage , the better the water retention properties ; addition, can delay the setting time of mortar mixed with less than 5% of the latex . Therefore , polyamide cement mortar used in construction and exterior plastering mortar cracks and leakage problems , and has great practical significance .

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CLC: > Industrial Technology > Building Science > Building Materials > Waterproof,moisture-proof material,caulking,sealing materials > Caulking , sealing materials > Mortar
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