id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-2234	Lei, Guangyu	Study on Mechanical Properties of the Compound Soil of Feldspathic Sandstone and Sand Based on Micro – level	2022	3	.pdf	application/pdf	1977	69	41	From the comparison between the bulk density and apparent density of arsenic sandstone and composite soil, it is found that the bulk density and apparent density of arsenic sandstone are both greater than the surface density of composite soil, indicating that although the total porosity of arsenic sandstone is greater than that of composite soil, the actual unit weight of arsenic sandstone is greater than that of composite soil, that is, arsenic sandstone is relatively dense, the mass per unit volume is greater than that of composite soil, 221 and the clay content is greater than that of composite soil, which explains the internal reasons for the macro performance of arsenic sandstone. The total porosity of arsenic sandstone is larger than that of composite soil, but its porosity is far less than that of composite soil, which further verifies that arsenic sandstone has many large pores, compact texture and strong water permeability; However, the composite soil has many micro pores, loose texture and weak water permeability. 5000x 2000x 1000x 500x Figure 1.	cache/ajst-2234.pdf	txt/ajst-2234.txt