This paper introduces the cause of the easy aging of sodium silicate binder and the harm of its aging to the sand nature, and puts forward the methods and effects of sodium silicate binder modifying.
A kind of micro-porous permeable material is prepared based on common features of existing permeable materials and taking dense accumulation of fine sand as the matrix and epoxy resin as binder.
根据已有透水材料的共同特点，以细砂密集堆积体为基质，环氧树脂为胶结料，制备出一种微孔透水性材料。
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The heat cured sand of Al-Mg-B compound phosphate inorganic binder was modified by ultrasonic oscillation to binder and adding organic polymer YPPJ while mixing of sand.