東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Formation of silica microstructures ...

Guo, Rui.

Linked to FindBook

Google Book

Amazon

博客來

Formation of silica microstructures between inundated stressed silica grains: Effect on intergranular tensile strength.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Formation of silica microstructures between inundated stressed silica grains: Effect on intergranular tensile strength./
Author:	Guo, Rui.
Description:	150 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-08(E), Section: B.
Contained By:	Dissertation Abstracts International75-08B(E).
Subject:	Engineering, Civil. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3617693
ISBN:	9781303853722

Formation of silica microstructures between inundated stressed silica grains: Effect on intergranular tensile strength.
Guo, Rui.

Formation of silica microstructures between inundated stressed silica grains: Effect on intergranular tensile strength. - 150 p.

Source: Dissertation Abstracts International, Volume: 75-08(E), Section: B.

Thesis (Ph.D.)--Duke University, 2014.

Laboratory tests on microscale are reported in which amorphous silica grains were compressed in a liquid environment, namely in solutions with different silica ion concentrations for up to four weeks. Such an arrangement represents an idealized representation of two sand grains. The grain surfaces and asperities were examined in Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) for fractures, silica polymer growth, and polymer strength. Single chains of silica polymers are found to have a failure pulling force of 330 - 450 nN. A chain of observations are reported for the first time, using Pneumatic Grain Indenter and Grain Indenter-Puller apparatuses, confirming a long-existing hypothesis that a stressed contact with microcracks generates dissolved silica in the contact (asperity) vicinity, which eventually polymerizes, forming a structure between the grains on a timescale in the order of weeks. Such structure exhibits intergranular tensile force of 1 - 1.5 mN when aged in solutions containing silica ion concentrations of 200- to 500 ppm. Stress appears to accelerate the generation of silica polymers around stressed contact regions, so does mica-silica contacts. The magnitude of intergranular tensile force is 2 to 3 times greater than that of water capillary effect between grains.

ISBN: 9781303853722Subjects--Topical Terms:

783781
Engineering, Civil.

Formation of silica microstructures between inundated stressed silica grains: Effect on intergranular tensile strength.
LDR:02232nmm a2200277 4500 001 2055640
005 20150217125026.5
008 170521s2014 ||||||||||||||||| ||eng d
020 $a 9781303853722
035 $a (MiAaPQ)AAI3617693
035 $a AAI3617693
040 $a MiAaPQ $c MiAaPQ
100 1 $a Guo, Rui. $3 2092984
245 1 0 $a Formation of silica microstructures between inundated stressed silica grains: Effect on intergranular tensile strength.
300 $a 150 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-08(E), Section: B.
500 $a Adviser: Tomasz A. Hueckel.
502 $a Thesis (Ph.D.)--Duke University, 2014.
520 $a Laboratory tests on microscale are reported in which amorphous silica grains were compressed in a liquid environment, namely in solutions with different silica ion concentrations for up to four weeks. Such an arrangement represents an idealized representation of two sand grains. The grain surfaces and asperities were examined in Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) for fractures, silica polymer growth, and polymer strength. Single chains of silica polymers are found to have a failure pulling force of 330 - 450 nN. A chain of observations are reported for the first time, using Pneumatic Grain Indenter and Grain Indenter-Puller apparatuses, confirming a long-existing hypothesis that a stressed contact with microcracks generates dissolved silica in the contact (asperity) vicinity, which eventually polymerizes, forming a structure between the grains on a timescale in the order of weeks. Such structure exhibits intergranular tensile force of 1 - 1.5 mN when aged in solutions containing silica ion concentrations of 200- to 500 ppm. Stress appears to accelerate the generation of silica polymers around stressed contact regions, so does mica-silica contacts. The magnitude of intergranular tensile force is 2 to 3 times greater than that of water capillary effect between grains.
590 $a School code: 0066.
650 4 $a Engineering, Civil. $3 783781
650 4 $a Agriculture, Soil Science. $3 1017824
690 $a 0543
690 $a 0481
710 2 $a Duke University. $b Civil and Environmental Engineering. $3 1019546
773 0 $t Dissertation Abstracts International $g 75-08B(E).
790 $a 0066
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3617693