Related Experiment Video
Updated: Feb 15, 2026
11:06
Encapsulating Cytochrome c in Silica Aerogel Nanoarchitectures without Metal Nanoparticles while Retaining Gas-phase Bioactivity
Published on: March 1, 2016
10.8K
Long-Term Mechanical Behavior of Nano Silica Sol Grouting
Dongjiang Pan1, Nong Zhang2, Chenghao Zhang3
1Key Laboratory of Deep Coal Resource Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China. cumtpdj@163.com.
Nanomaterials (Basel, Switzerland)
|January 17, 2018
Summary
This study investigated nano silica sol grouting over 500 days, finding that catalyst dosage impacts stability and moisture loss. Optimal curing conditions are crucial for grout longevity and mechanical performance in engineering projects.
Area of Science:
- Civil Engineering
- Materials Science
- Geotechnical Engineering
Background:
- Grouting longevity is critical for safe and sustainable engineering projects.
- Understanding the long-term mechanical behavior of nano silica sol grout is essential.
Purpose of the Study:
- To investigate the long-term mechanical behavior of nano silica sol grouting.
- To analyze the effect of NaCl catalyst dosage and curing conditions on grout performance.
Main Methods:
- A 500-day experimental study was conducted.
- Mechanical properties were tested using electrohydraulic uniaxial compression and Vicat instruments.
- Microstructure and strength changes were analyzed using SEM, XRD, and ultrasonic velocity tests.
Main Results:
- Grout samples exhibited three stages: shrinkage, stable, and second shrinkage.
- The NaCl catalyst improved sample stability and reduced moisture loss; higher temperatures increased moisture loss.
- Uniaxial compressive strength and secant modulus showed three time-dependent stages; brittleness increased over time.
Conclusions:
- Catalyst dosage and curing conditions significantly influence grout compactness and strength.
- Nano silica sol grout's long-term performance is dependent on controlled environmental factors and mix design.
- The findings provide insights into optimizing grout formulations for enhanced durability in engineering applications.
Keywords:
fluctuating temperature-humidity conditionslong-term mechanical testsmicro-mechanismnano silica solMore Related Videos
Related Concept Videos
01:05Long-term Depression
33.4K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
33.4K
01:03Long-term Depression
3.4K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
3.4K
01:371° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism
5.0K
Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.
5.0K
00:54What is Behavior?
10.3K
Behaviors are actions that an organism engages in—they can be related to finding food, reproducing, defending against threats, and many other possible actions. Behaviors include activities related to the environment around the animal—such as migration—as well as social interactions within a species or population. Many behaviors involve motor output—that is, muscle movements—while others involve less visible actions, such as learning.
10.3K
01:10Silica Gel Column Chromatography: Overview
3.7K
Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
3.7K
01:35Long-term Potentiation
58.8K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
58.8K