改性土体材料圆柱体试件轴心抗压试验研究

为改善传统土坯砌体民居的土体材料的基本力学性能,通过在土体材料中分别掺入不同掺量的麦秸秆、生石灰或粗砂,形成改性土体材料,制作了直径100 mm×高110 mm圆柱体试件,通过试件抗压强度试验的试验现象和结果的分析,研究不同掺和量对试件基本力学性能的影响,分别提出掺和麦秸秆、生石灰或粗砂试件的最佳掺和比例范围.试验结果表明,当麦秸秆掺和量达到一定范围时,极限荷载和抗变形能力提高明显,当生石灰或粗砂掺和量达到一定范围时,极限荷载提高显著但抗变形能力下降.

Experimental tests on axis compressive strength of the cylinder specimen of modified soil materials

To improve the mechanical properties of traditional earth building materials. The different blending amount of wheat straw, lime or coarse sand were added to raw soil so as to generate modified soil materials. Produeed φ100 mm × 110 mm eylinder speeimen. By analysis of experimental phenomena and results of the test speeimen compressive strength and study on the effeets of different blending amount the test bloek for the mechanical properties. An optimum ratio of additives s ueh as wheat straw,lime or eoarse sand was reeommended. The test results indieate that appropriate additives of wheat straw added to raw soil material sean improve their ultimate load and deformation eapaeity, for blending lime or eoarse sand speeimens,the ultimate load inereased signifieantly but the deformation resistanee is poor.