Journal ArticleDOI
Effects of flocculation of cement slurry on groutability of porous media
TLDR
In this paper, a focused beam reflectance measurement (FBRM) system was used to analyse the in-situ particle state characteristics of cement slurry and the grouting depth of the slurry in sand columns was tested.About:
This article is published in Construction and Building Materials.The article was published on 2020-03-20. It has received 13 citations till now. The article focuses on the topics: Slurry & Particle size.read more
Citations
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Journal ArticleDOI
Permeation-diffusion characteristics and air-leakage blocking mechanism for the fire-extinguishing inorganic gel flows in loose broken coal particles
Haitao Li,Ming-Shun Wu,Zhongyong Liu,Fengchuan Wang,Ning Yang,Rongyang Lou,Chaozhong Qin,Minggao Yu,Yingying Yu +8 more
TL;DR: In this article , the influence of grouting pressure and coal voids on the permeation, diffusion, and filtration of inorganic gel was investigated, and three various stages of gel slurry transports in loose coal particles were acquired experimentally and numerically.
Journal ArticleDOI
Quantitative permeation grouting in sand layer with consideration of grout properties and medium characteristics
TL;DR: In this article , a grout injection system was developed for a series of laboratory tests to determine the effects on groutability of particle size, relative compaction, water-cement ratio, clay content and grouting pressure.
Journal ArticleDOI
A novel thermo-thickening viscosity modifying admixture to improve settlement stability of cement slurry under high temperatures
TL;DR: In this paper, the authors proposed a novel thermo-thickening modifying admixture (VMAs) with strong hydrophobicity, called HTP, which is able to slash the bleeding water exuded from cement slurry and eliminate the compressive strength/density differences among the upper-middle-lower hardened cement paste segments.
Journal ArticleDOI
Numerical investigation on the effects of porous cone parameters on liquid transpiration cooling performance
TL;DR: In this paper, a mathematical model of liquid transpiration cooling is simplified through equivalent mathematical transformations without invoking any additional assumptions, and the results indicate that there are remarkable differences between the effects of solid conductivity, particle diameter and thickness of the porous layer on cooling performance.
Journal ArticleDOI
Experimental Study on Groutability of Sand Layer concerning Permeation Grouting
TL;DR: In this article, a self-designed permeation grouting test device was used to evaluate the groutability of sand layer and found that the sand particle size and slurry water-cement ratio were positively and negatively correlated with the grouting ability of the sand layer.
References
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Journal ArticleDOI
Performance of new viscosity modifying admixtures in enhancing the rheological properties of cement paste
TL;DR: The use of viscosity modifying admixtures (VMA) has proved to be very effective in stabilizing the rheological properties and consistency of self-compacting concrete (SCC) as mentioned in this paper.
Journal ArticleDOI
Rheological properties of cement paste: Thixotropic behavior and structural breakdown
TL;DR: In this paper, a new material model is presented to simulate rheological behavior of cement paste, which is among others based on combined concepts by Hattori and Izumi and by Tattersall and Banfill.
Journal ArticleDOI
Effects of carbonated hardened cement paste powder on hydration and microstructure of Portland cement
TL;DR: In this paper, the incorporation of uncarbonated and carbonated hardened cement paste powder into cement affects the hydration and microstructure development of cement, which is classified as a corrosive hazardous material.
Journal ArticleDOI
Stop mechanism for cementitious grouts at different water-to-cement ratios
TL;DR: In this article, three different stop mechanisms can be identified depending on the ratio between the grain size of the grout and the available opening, i.e., equilibrium between the driving and resistance forces.
Journal ArticleDOI
The microstructure of dispersed and non-dispersed fresh cement pastes : New insight by cryo-microscopy
Anatol Zingg,Lorenz Holzer,Andres Kaech,Frank Winnefeld,Joachim Pakusch,Stefan Becker,Ludwig J. Gauckler +6 more
TL;DR: In this paper, the microstructural development of fresh cement pastes without and with polycarboxylate-type (PCE) of superplasticizers was investigated.
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