FRACTAL ANALYSIS OF PORE STRUCTURES IN LOW PERMEABILITY SANDSTONES USING MERCURY INTRUSION POROSIMETRY

2018 ◽  
Vol 21 (11) ◽  
pp. 1097-1119 ◽  
Author(s):  
Fuyong Wang ◽  
Liang Jiao ◽  
Zhichao Liu ◽  
Xiqun Tan ◽  
Congle Wang ◽  
...  
Keyword(s):  
Fractal Analysis ◽  
Mercury Intrusion Porosimetry ◽  
Low Permeability ◽  
Mercury Intrusion ◽  
Pore Structures

Study of Low-Permeability Sandstone by Unidirectional Mercury Intrusion Porosimetry

2018 ◽  
Vol 54 (4) ◽  
pp. 476-483
Author(s):  
Luo Hao-ran ◽  
Huang Xu-ri ◽  
Yin cheng ◽  
Tao Zheng-wu
Keyword(s):  
Mercury Intrusion Porosimetry ◽  
Low Permeability ◽  
Mercury Intrusion

A Comparison of the Pore Structure of Cement and Fly Ash/Cement Mortars Made with Sea Water and Fresh Water

1986 ◽  
Vol 85 ◽  
Author(s):  
B. K. Marsh ◽  
R. C. Joshi ◽  
A. Balasundaram
Keyword(s):  
Fly Ash ◽  
Pore Structure ◽  
Fresh Water ◽  
Mercury Intrusion Porosimetry ◽  
Sea Water ◽  
Blended Cement ◽  
Fly Ashes ◽  
Mercury Intrusion ◽  
Pore Structures ◽  
Cement Mortars

ABSTRACTPore structures of portland and blended cement mortars prepared with sea water were assessed by mercury intrusion porosimetry. Comparison is made with similar mortars made with fresh water. Mortars were made using cement containing 0%, 25% or 50% (by volume) of one of two Alberta fly ashes. They were tested after 90 days of continuous immersion in sea water at 5°C or 20° C. Results show that the mortars made with sea water generally contained a much higher volume of fine pores although the porosity was, in some cases, greater than that of mortars made with fresh water. Nevertheless, the volume of larger pores was lower in the mortars made with sea water. The pore structure of the various mortars is discussed in relation to potential durability.

Experiment Study on the Effects of the Dehydration Methods on the Micropore Structure Characteristics of Bentonite

2013 ◽  
Vol 785-786 ◽  
pp. 248-252 ◽  
Author(s):  
Xiao Qing Yan ◽  
Ying Guang Fang ◽  
Hai Hong Mo ◽  
Ping Zhang
Keyword(s):  
Civil Engineer ◽  
Pore Structure ◽  
Civil Engineering ◽  
Mercury Intrusion Porosimetry ◽  
Low Permeability ◽  
Experiment Study ◽  
Mercury Intrusion ◽  
Structure Characteristics ◽  
Micropore Structure ◽  
Test Errors

As a natural nanomaterial, the bentonite is widely used in industry and engineering, and it is used in the anti-seepage (infiltration) project in civil engineer because of its low permeability. The micro-pore structure characteristics of the bentonite with the different dehydration methods are measured by Mercury Intrusion Porosimetry (MIP) in this text. Then the effects of the dehydration methods on the micro-pore structure characteristics of bentonite are analysed and the detailed reasons of the test errors are given. The results of the research have certain referential value for the application of the bentonite in civil engineering and play a guiding role on how to reduce the errors and to improve the authenticity and the reliability of the test.

Influence of Surface Treatment on Pore Structures of Cement-Based Materials

2006 ◽  
Vol 302-303 ◽  
pp. 347-355 ◽  
Author(s):  
Chien Hung Chen ◽  
Ming Chin Ho ◽  
Shaing Hai Yeh ◽  
Ran Huang
Keyword(s):  
Surface Treatment ◽  
Mercury Intrusion Porosimetry ◽  
Total Charge ◽  
Penetration Test ◽  
Mercury Intrusion ◽  
Pore Structures ◽  
Cement Based Materials ◽  
Positive Effect ◽  
Electronic Microscope ◽  
Effect Of Surface

The objective of this investigation is to evaluate the effect of surface treatments on cement-based materials, which include mortar and concrete samples. Penetrated sealers and methyl methacrylate (MMA) were used as surface treatment materials. Two concrete mixes (w/c = 0.35, 0.55) were selected and cubic/cylindrical specimens were prepared according to ASTM specifications. The treated specimens have higher compressive strengths than the control specimens. Also, the absorptions and total charge passed of rapid chloride penetration test (RCPT) are lower in the treated specimens. Scanning electronic microscope (SEM) was utilized to estimate the microstructure of the specimens. Denser pore structures and narrower pore-size distribution were observed in SEM micrographs and mercury intrusion porosimetry (MIP) spectrum for the treated specimens, which are correspondent to the macro-observation. The positive effect is most prominent in polymer treated specimens. For higher w/c ratio mix, large capillary pores were filled by most of treatment materials and compressive strength significantly increased, while, for lower w/c ratio mix, polymer and silicate sealer filled in medium capillary pores as indicated by MIP and RCPT results.

Study on the Influence of Air-Entraining Agent on the Impermeability of Cement-Based Composites Based on its Pore Structure by Fractal Theory

2010 ◽  
Vol 168-170 ◽  
pp. 615-618
Author(s):  
Zhi Qin Du ◽  
Wei Sun
Keyword(s):  
Fractal Dimension ◽  
Pore Structure ◽  
Mercury Intrusion Porosimetry ◽  
Fractal Theory ◽  
Mercury Intrusion ◽  
Pore Structures ◽  
Cement Based Materials

The effect of different quantity of air-entraining agent on the impermeability of cement-based materials are studied in this paper. Impermeability test and mercury intrusion porosimetry (MIP) method were used to characterize the impermeability and pore structures. The fractal dimension is used to describe the characteristic of pore structure and calculated by the data of MIP experiment. The result shows that owing to the improvement of pore structure, the impermeability performance of the cement-based composites is noticeably enhanced when air-entraining agent is added with appropriate quantity.

Fractal characteristics of low-permeability gas sandstones based on a new model for mercury intrusion porosimetry

2018 ◽  
Vol 60 ◽  
pp. 246-255 ◽  
Author(s):  
Penghui Su ◽  
Zhaohui Xia ◽  
Liangchao Qu ◽  
Wei Yu ◽  
Ping Wang ◽  
...  
Keyword(s):  
Mercury Intrusion Porosimetry ◽  
Low Permeability ◽  
New Model ◽  
Mercury Intrusion ◽  
Fractal Characteristics

Surface fractal analysis of pore structure of tight sandstones: Comparison of different models based on mercury intrusion porosimetry

AAPG Bulletin ◽  
2021 ◽  
Vol 105 (7) ◽  
pp. 1491-1509
Author(s):  
Wenchao Dou ◽  
Luofu Liu ◽  
Zhengjian Xu ◽  
Mengyao Wang ◽  
Yiting Chen ◽  
...  
Keyword(s):  
Pore Structure ◽  
Fractal Analysis ◽  
Mercury Intrusion Porosimetry ◽  
Mercury Intrusion ◽  
Surface Fractal

Fractal analysis of SEM images and mercury intrusion porosimetry data for the microstructural characterization of microcrystalline cellulose-based pellets

2009 ◽  
Vol 57 (1) ◽  
pp. 295-303 ◽  
Author(s):  
A. Gómez-Carracedo ◽  
C. Alvarez-Lorenzo ◽  
R. Coca ◽  
R. Martínez-Pacheco ◽  
A. Concheiro ◽  
...  
Keyword(s):  
Microcrystalline Cellulose ◽  
Fractal Analysis ◽  
Mercury Intrusion Porosimetry ◽  
Microstructural Characterization ◽  
Sem Images ◽  
Mercury Intrusion

Pore analysis of thermally compressed Scots pine (Pinus sylvestris L.) by mercury intrusion porosimetry

Holzforschung ◽  
2017 ◽  
Vol 72 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Lili Li ◽  
Ximing Wang ◽  
Yan Yan ◽  
Lijuan Ping
Keyword(s):  
Heat Treatment ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Exposure Time ◽  
Mercury Intrusion Porosimetry ◽  
Pore Distribution ◽  
Mercury Intrusion ◽  
Pore Analysis ◽  
Pore Structures

AbstractIn focus of the present study was the mercury intrusion porosimetry (MIP) of heartwood (hW) and sapwood (sW) of Scots pine, which were modified by compression alone (C) and combination of C and heat treatment (CHT). The untreated sW has a more uniform pore distribution than that of hW as presented in logarithmic differential curves. Expectedly, the total pore volumes of CHThW and CHTsW are significantly decreased. Compared to the HT temperature (180–220°C), the exposure time (2–5 h) has a weaker effect on the pore structures of the CHT woods. Furthermore, the intrusion volume of CHThW decreased compared with compressed alone samples. However, an inverse result was apparent for CHTsW.

Sign in / Sign up

Export Citation Format

Share Document