棉花秸秆改性生土材料试验研究

Experimental Research on Raw Soil Materials Modified by Cotton Straw

为改善生土墙体的力学性能,提高其延性,本着就地取材、废物利用的原则,本文以棉花秸秆为主填料,掺入少量砂土对生土进行改性.对改性后的生土试块进行强度试验,并与常规素生土试块进行对比.结果表明,适量掺入棉花秸秆的改性生土试块力学强度和延性有较大提高,掺入中砂对其力学性能提高较大,但对延性提高不明显.

To improve the mechanical properties and the ductility of raw soil walls, this research modified the raw soil with cotton stalks as the main filler and a small amount of medium sand based on the principle of utilizing local materials and waste products. And then it carried out a strength test and made a comparison with the test blocks of conventional raw soil in strength. The results showed that the mechanical strength and ductility of modified soil samples with cotton straw were greatly improved, and the mechanical properties of the modified soil with medium sand were also greatly improved, but the improvement of ductility was not obvious.