CAJ | 학술논문

采用微机控制电子万能试验机对密度分别为187．5 kg/m3和250．0 kg/m3的棉花秸秆草砖进行横压、侧压和竖压，并通过荷载与位移的关系曲线，得到应力与应变的发展趋势，研究棉秆草砖的承载力、极限抗压强度和弹性模量变化.结果表明，在同尺寸同密度的条件下棉花秸秆草砖的力学性能与其压缩方式有关，竖压方式下棉花秸秆草砖的承载力较大，其中在失效点处竖压的极限抗压强度和弹性模量的数值最大；在密度不同时，高密度草砖的承载力、极限抗压强度和弹性模量均大于低密度草砖.
채용미궤공제전자만능시험궤대밀도분별위187．5 kg/m3화250．0 kg/m3적면화갈간초전진행횡압、측압화수압，병통과하재여위이적관계곡선，득도응력여응변적발전추세，연구면간초전적승재력、겁한항압강도화탄성모량변화.결과표명，재동척촌동밀도적조건하면화갈간초전적역학성능여기압축방식유관，수압방식하면화갈간초전적승재력교대，기중재실효점처수압적겁한항압강도화탄성모량적수치최대；재밀도불동시，고밀도초전적승재력、겁한항압강도화탄성모량균대우저밀도초전.
To study the mechanical properties of cotton straw brick which were related to the density and compression ways,which were tested by using microcomputer control electroGuniversal testing machine, and the mechanical properties of density about 187.5 kg/m3 and 250.0 kg/m3 cotton straw bricks were obG tained by different test ways.According to the straw brick vertical stress and displacement relationship curves and the development law of the stress and strain,the bearing capacity,ultimate uniaxial compressive strength and elastic modulus can be determined.Test results showed that under the condition of the same size and density,its mechanical properties were related to the compression ways,and the vertical pressure of the ultimate compressive strength,elastic modulus value were maximum at the failure point.If the densiG ty was different,the ultimate compressive strength and elastic modulus and bearing capacity of the high density of straw brick were greater than low density straw brick.