Entwicklung Zement gebundener Werkstoffe unter Verwendung von hydrophobierenden Zusätzen: Hydratisieren, Entwicklung des Mikrogefüges, Beständigkeit / Development of Cementitious Materials by Incorporation of WR Powder Additives: Hydration Process, Development of Microstructure and Durability

Spaeth, Valérie; Delplancke‐Ogletree, Marie‐Paule; Lecomte, Jean-Paul

doi:10.1515/rbm-2010-6389

Cited by 5 publications

(4 citation statements)

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“…It is reasonable to expect that hydration of cement is slowed down by the addition of organosilicon admixtures. Such a conclusion is also made by Spaeth et al [15]. Triethoxy(octyl)silane, as monomer, must undergo a hydrolysis reaction first.…”

Section: Discussionsupporting

confidence: 52%

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Internal hydrophobization of cementitious materials by using of organosilicon compounds

Grabowska

Koniorczyk

2020

E3S Web Conf.

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The low resistance to harmful acting of water confined in porous, cement-based materials is a negative feature. As the consequence of porous structure these materials have not sufficient resistance as some physical and chemical detrimental factors. The objective of this paper was to evaluate the impact of organosilicon admixture based on silane and siloxane on physical properties of cement mortar. Internal hydrophobization can significantly improve the durability of a cement materials. At this paper the results of mechanical strength, absorbability and capillary water absorption of internally hydrophobized cement mortar are presented. In addition, a contact angle test was used to assess the changes in wetting angle of cement paste.

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Section: Discussionsupporting

confidence: 52%

“…Milenković et al [14] noticed a decrease in compressive strength of cement mortar by 18% for addition of 2% of silane emulsion. Spaeth et al [15] also observed a decrease in comprehensive strength for silane and PDMS emulsions. It is reasonable to expect that hydration of cement is slowed down by the addition of organosilicon admixtures.…”

Section: Discussionmentioning

confidence: 91%

Internal hydrophobization of cementitious materials by using of organosilicon compounds

Grabowska

Koniorczyk

2020

E3S Web Conf.

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“…Impregnation of masonry with water repellent based emulsions particularly with siloxane and/or silane polymers appears to be the most successful method of protection from capillary water absorption. This kind of water repellent treatment already used as surface treatment for construction materials [17][18].…”

Section: Discussionmentioning

confidence: 99%

Polymer Based Treatments Applied on Recycled Concrete Aggregates

Spaeth¹,

Tegguer²

2013

AMR

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The recycling of concrete, bricks and masonry rubble as concrete aggregates is an important way to contribute to a sustainable material flow. However, there are still various uncertainties limiting the widespread use of recycled concrete aggregates (RCA). The fluctuations in the composition of grade recycled aggregates and their influence on the properties of fresh and hardened concrete are of particular concern regarding the use of RCA. So, the reuse of RCA is still limited. That’s why an efficient polymer based treatment is proposed in order to reuse RCA easier.

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“…Water repellants are often applied to reduce the water infiltration. Addition of a hydrophobic admixture during the manufacturing process of building materials limits the water penetrating in entering the capillary voids and porous space [1][2][3][4][5] . The first results on microstructure, capillary water absorption, absorbability and mechanical properties on admixed cement mortar were received and are presented here.…”

Section: Introductionmentioning

confidence: 99%

Internal hydrophobization of cement mortar by addition of siloxanes

Grabowska

Koniorczyk

2019

MATEC Web Conf.

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Hydrophobic substances contain in its structure non-polar groups by which have the capability to "repel" water molecules. Because of them the material become hydrophobic, i.e. it is not water-wettable. Hydrophobic additives are used in various areas, including buildings, bridges, ceramic materials, underground constructions and marine constructions. The use of hydrophobic admixtures is one of the ways to protect building elements from adverse water effects, thereby increasing their durability by reducing the water absorption. In our study we investigated the influence of siloxanes on compressive strength and absorbability of cement mortar. The modification of cement mortar microstructure due to addition of organosilicon compounds was analyzed by mercury intrusion porosimetry. Finally we assessed the effectiveness of poly(dimethylsiloxane) and water solution of methyl silicon resin as hydrophobic admixture by measuring the water absorption coefficient.

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Entwicklung Zement gebundener Werkstoffe unter Verwendung von hydrophobierenden Zusätzen: Hydratisieren, Entwicklung des Mikrogefüges, Beständigkeit / Development of Cementitious Materials by Incorporation of WR Powder Additives: Hydration Process, Development of Microstructure and Durability

Cited by 5 publications

References 0 publications

Internal hydrophobization of cementitious materials by using of organosilicon compounds

Internal hydrophobization of cementitious materials by using of organosilicon compounds

Polymer Based Treatments Applied on Recycled Concrete Aggregates

Internal hydrophobization of cement mortar by addition of siloxanes

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