This article discusses the influence of compressive shock waves on the permeability of cementitious materials. Shock waves are generated in water by Pulsed Arc Electrohydraulic Discharges (PAED). The practical aim is to increase the intrinsic permeability of the specimens. The maximum pressure amplitude of the shock wave is 250 MPa. It generates damage in the specimens and the evolution of dama...

The measurement of the relative permeability in tight rock is challenging due to its ultralow and time-consuming nature experiments. Studying movable unmovable fluid distribution establishing a reliable prediction model an urgent problem be solved. This paper used nuclear magnetic resonance (NMR) investigate water sandstone under different centrifugal forces. A new method for predicting gas–wat...

Exploring the relationship between formation pressure and shale pore evolution is helpful for enrichment development of marine gas accumulation theory. The thermal experiment was carried out on Xiamaling Formation (Pr3x) lowly matured shale, which has a similar sedimentary environment to Longmaxi (S1l) highly shale. Comparative experiments open semi-closed pyrolysis multiple structure character...

This document deals with the characterization of porous materials having pore widths in the macropore range of 50 nm to 500 μm. In recent years, the development of advanced adsorbents and catalysts (e.g., monoliths having hierarchical pore networks) has brought about a renewed interest in macropore structures. Mercury intrusion–extrusion porosimetry is a well-established method, which is at pre...

In this experimental study, tests were conducted to obtain the CaO/SiO2 (C/S) molar ratio that minimizes micropores of hardened concrete. To end, compressive strength, thermogravimetric analysis (TGA), and microporous structure concrete investigated using specimens made with silica fume quartz powder under high-temperature/high-pressure conditions. The yielded following results: (1) highest str...