DARAGROUT® 181 (EH)

Non-shrink grout admixture for use with injection grouts requiring controlled increase in volume Additive for non-shrink grout acc. to EN 934-4:T2

Fields of Application

DARAGROUT® 181 (EH) is a grout admixture for injection grouts where controlled volume increase is required. Applications include: post tensioning of structures, underground cavity and tunnel constructions, underpinning of foundations, water sealing of dams (curtain wall grouting), grouting and waterproofing of joints in waterproofing constructions (injection by packers or injection hoses), and large field injections for waterproofing.

Technical Data

Effective Component aluminium powder
Form powder
Homogeneity homogeneous (tested acc. to DIN V 20000-101, annex A)
Colour light brown
Dry material content 97,5 ± 2,50 M.-%
pH-value 7.5 ± 1 (3% suspension)
Total chloride content < 0.10 m.-%
Water-soluble chloride content < 0.10 m.-%
Alkali content < 0.5 m.-%
Storage Keep dry and well closed in original containers
Recommended Dosage 0.20–2.00 m.-% of cement
Dosage 0.20–2.00 m.-% of cement D 25 kg sacks; 25 kg boxes (50 bags with 500 g)
Delivery Form 25 kg sacks; 25 kg boxes (50 bags with 500 g)
Physiological effect May irritate skin and eyes; see SDS
Shelf-life approx. 1 year in closed original containers

Properties/Mode of Action

DARAGROUT 181 (EH) reduces the water demand of the fresh grout without affecting the consistency or immersion time compared to an unmodified mortar. By using the plasticizing effect of DARAGROUT 181 (EH), the fluidity of the grout is considerably increased so that the injection grout can flow even into smallest voids and gaps. The bleeding of the injection grout is reduced considerably. DARAGROUT 181 (EH) will lead to a controlled increase in volume of the injection grout before hardening and therefore compensates the natural settlement of the cement paste.

Swelling proceeds slowly with little pressure so that the grout can encase all surrounding surfaces completely and fill the smallest voids. This will ensure bonding and prevent honey combing which is often the cause of corrosion.

Dosage and Use

The injection grout must be mixed mechanically with a suitable mixer. All substances must be carefully added according to their weight and should, as a rule, be added in the order water – cement – grout admixture. It is recommended to add the grout admixture after the cement lime has been premixed for 2 minutes. Mixing should be finished after 4 minutes at the latest. If the grout is mixed too long, it is possible that under higher temperatures the grout may stiffen in the mixer. To prevent segregation of the grout and the formation of clusters, it must be constantly mixed in the storage container

Suitable for use with injection grouts in prestressed concrete. When using non-shrink grout admixtures with chromate-reduced cements, there may be unexpected side-effects such as a change in setting or hardening times. Preliminary tests according to official national standards are always required before use!

gcpat.uk | United Kingdom customer service: +44 (0) 1480 478421

We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.

DARAGROUT is a trademark, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2016 GCP Applied Technologies Inc. All rights reserved.

GCP0082-1216 DARAGROUT-181-EH_DE-EN

This document is only current as of the last updated date stated below and is valid only for use in the United Kingdom. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on www.gcpat.uk. Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

Last Updated: 2022-11-24

https://gcpat.uk/en-gb/solutions/products/betec-grouts-and-cementitious-mortars/daragrout-181-eh