水热固化淤泥质渣土砖砌体抗压性能试验研究

Experimental study on the compressive behavior of masonry fabricated by slag soil brick from mucky construction waste soil

通过模拟地下成岩机理的水热固化技术,将淤泥质渣土脱水处理并添加石灰、再生骨料等搅拌均匀后压制成砖坯,在蒸压釜中进行高温高压养护,使其内部发生水热固化反应,制成绿色环保的水热固化渣土砖。设计制作了水热固化渣土砖砌体并进行轴心抗压试验,研究砖的类型和砂浆类型及强度对水热固化渣土砖砌体破坏过程、荷载-变形特性、抗压强度和弹性模量的影响。结果表明:水热固化渣土砖的抗压强度设计值和弹性模量平均值分别较GB 50003—2011规范值高38%和44%,该产品可用于替代传统墙体材料在实际工程中应用。

By simulating the hydrothermal solidification technique of underground rock formation mechanism,the sludge soil is dehydrated and mixed evenly with lime,recycled aggregates,etc.,and then pressed into bricks.The bricks are then cured under high temperature and high pressure in an autoclave to undergo hydrothermal solidification reaction inside,forming green and environmentally friendly hydrothermal solidified slag soil bricks.To study the basic mechanical properties of hydrothermal solidified slag soil brick masonry,hydrothermal solidified slag soil brick masonry was designed and fabricated,and axial compressive tests were conducted to investigate the effects of brick type,mortar type,and strength on the failure process,load deformation characteristics,compressive strength,and elastic modulus of the masonry.The results showed that the compressive strength design value and average elastic modulus of hydrothermal solidified slag soil brick were 38%and 44%higher than the requirements of GB 50003—2011,respectively.This product can be used to replace traditional wall materials in practical engineering applications.