Non-structural injection grouts with reduced water content: Changes induced by the partial substitution of water with alcohol

Pasian, Chiara; Piqué, Francesca; Jornet, Albert

doi:10.1179/2047058415y.0000000022

Cited by 8 publications

(9 citation statements)

References 8 publications

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“…According to the existing form of water in the slurry, the water in the grout can be roughly divided into bound water, free water and wetting water (Pasian et al 2017). After combining with water, cement will interact with each other to generate hydration reactions (Baltazar et al 2014).…”

Section: Experimental and Regression Analysis Resultsmentioning

confidence: 99%

Proportion optimization of grouting materials for roadways with soft surrounding mass

Hao

Feng

Wang

2020

International Journal of Green Energy

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Severe deformation and failure frequently occur in roadways with soft or weak surrounding rock and have greatly influenced safe and efficient mining of coal in many coal mines. Using portland cement, emery and fly ash as main raw materials, through laboratory tests, effect of water/binder ratio, cement/sand ratio, water/sodium silicate ratio, water reducing agent, fly ash/cement ratio and various performance indexes of grout of fluidity, viscosity, setting time, bleeding rate, compressive strength, concretion rate and various performance indexes were systematically analyzed. An optimized mixture ratio of the main raw materials added in the grouting material proportion was determined through uniform design method, an optimal mixture ratio was determined by regression analysis. The results show that: 1) The flow performance is significantly affected by change of sodium silicate and water reducer, the compressive strength of grouting material increases significantly with increase in emery content, and decreases significantly with increase in water reducer. 2) An optimized mixture ratio among water cement ratio, cement sand ratio, water/sodium silicate ratio, water reducing agent, fly ash/cement ratio in the grouting material is 0.75, 1.2, 8%, 3% and 0.18, respectively. Field test demonstrated that the material has better performance in reinforcing weak and broken rock mass.

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Section: Experimental and Regression Analysis Resultsmentioning

confidence: 99%

Proportion optimization of grouting materials for roadways with soft surrounding mass

Hao

Feng

Wang

2020

International Journal of Green Energy

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“… type and amount of suspension medium: due to severe plaster contamination with soluble salts, water-ethanol was selected as the suspension medium. Grouts prepared with water-ethanol in the laboratory have shown suitable performance [5,12] and reduced salt mobilisation in the substrate compared to water-based grouts [15]. However, testing revealed that the presence of ethanol delays and inhibits the aluminium-calcium hydroxide reaction, hindering its expansion effect.…”

Section: Formulation Of the Grouts: Materials And Methodsmentioning

confidence: 99%

“…However, testing revealed that the presence of ethanol delays and inhibits the aluminium-calcium hydroxide reaction, hindering its expansion effect. 5 This factor will be relevant in the decision making (see Section 2.5).…”

Section: Formulation Of the Grouts: Materials And Methodsmentioning

confidence: 99%

“…8 percentage points higher than the one of the control. 5 The reason is subject to further research.…”

Section: First Stage Of Testingmentioning

confidence: 96%

“…time and availability of materials), and reliable analyses and testing procedures. No standards for testing of non-structural lime-based injection grouts are currently internationally agreed, although research on this has been carried out ( [3], [4], [5]). Field testing procedures have been proposed and compared to laboratory procedures [3], however, there is a lack of publications describing a methodology for the design and testing of grouts formulated ad hoc on site.…”

Section: Introduction 11 Design and Testing Of Injection Groutsmentioning

confidence: 99%

See 2 more Smart Citations

Innovative Water-Reduced Injection Grouts for the Stabilisation of Wall Paintings in the Hadi Rani Mahal, Nagaur, India: Design, Testing and Implementation

Pasian

Fonjaudran²,

Rava

2020

Studies in Conservation

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The design and evaluation of site-specific injection grouts for the stabilisation of delaminated wall paintings is often challenging to perform in situ, due to constraints such as time, availability of materials and reliable testing procedures. In this research, a rigorous design and testing methodology, which includes the development of a new adhesion test, was adopted on site for the development of injection grouts to be used in water-sensitive situations. Water reduced mixtures were obtained by partly substituting it with ethanol. Previous research (Pasian et al. 2018) demonstrated in the laboratory the potential suitability of water-ethanol grouts. In the present paper, water-reduced grouts were designed, tested and applied on site for the first time.

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Lime-based injection grouts with reduced water content: An assessment of the effects of the water-reducing agents ovalbumin and ethanol on the mineralogical evolution and properties of grouts

Pasian

Secco

Piqué

et al. 2018

Journal of Cultural Heritage

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Non-structural injection grouts with reduced water content: Changes induced by the partial substitution of water with alcohol

Cited by 8 publications

References 8 publications

Proportion optimization of grouting materials for roadways with soft surrounding mass

Proportion optimization of grouting materials for roadways with soft surrounding mass

Innovative Water-Reduced Injection Grouts for the Stabilisation of Wall Paintings in the Hadi Rani Mahal, Nagaur, India: Design, Testing and Implementation

Lime-based injection grouts with reduced water content: An assessment of the effects of the water-reducing agents ovalbumin and ethanol on the mineralogical evolution and properties of grouts

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