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Daragrout Expand

Daragrout Expand Data Sheet

Daragrout Expand SDS Sheet

Product Description

DARAGROUT EXPAND (ST) is an admixture predominantly used for the production of swelling mortars and concretes. It is also used for the manufacture of cementitious mortars with swelling properties for filling, injection into smaller voids for tasks in building and civil engineering constructions or underground structures.

25kg

ADVANTAGES

Lengthens workability time while maintaining strength
Decreases segregation of mix
Reduced water requirements with increased flowability
Improves surface bond in grouts by reducing shrinkage

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Specifcations
Instructions
Additional Info
Applications

Best results are obtained when DARAGROUT EXPAND (ST) is added as the last component to the mix after about half of the total mixing time. However, it can also be added to the concrete or mortar together with the gauging water.

DARAGROUT EXPAND (ST) forms micro air bubbles in the plastic cement gel in order to compensate the settlement by increase in volume. Swelling is finalized after 2–4 hours depending on ambient temperatures and proceeds slowly with little pressure so that the grout can encase all surrounding surfaces completely and fill the smallest voids. The formation of pores that effects the swelling is to be considered in advance by incorporating a strength reserve.

DARAGROUT EXPAND (ST) is predominantly used for the production of swelling mortars and concretes. Swelling concretes secure an effective filling of larger cavities, e.g. filling of larger joints between construction parts, filling of brittles from rock formations or constructions, casting of pipe ducts such as for drinking water purification plants, as well as for underpinnings in foundations.

DARAGROUT EXPAND (ST) is also used for the manufacture of cementitious mortars with swelling properties for filling, injection into smaller voids for tasks in building and civil engineering constructions or underground structures. Possible applications are above all injection, sealing and strengthening of
cracks, fissures, porous patches, filling of joints between construction parts as well as the casting of cavities underneath floor screeds.

Industrial Slab on Grade

Commercial Slab on Grade

Pour-in-place

Residential Slab

Grouts

Seeing Concrete Shrinkage Neutralized with Daragrout Expand

What does neutralizing drying shrinkage look like? We wanted to find out, so we poured two test cubes. The only difference between the two is the addition of Daragrout Expand to the cube on the right. You'll be surprised at...

Daragrout Expand

Effective Component	Aluminium powder
Form	Powder
Homogeneity	Homogeneous (tested acc. to DIN V 20000-101, annex A)
Color	Light Grey
Dry Material Content	> 95.0 m.-%
Bulk Density	920 ± 20 kg/m³
pH-Value	8.0 ± 1 (3% suspension)
Total Chloride Content	< 0.10 m.-%
Water-soluble chloride content	< 0.10 m.-%
Alkali Content	approx. 0.5 m.-%
Storage	Keep dry and well closed in original containers
Recommended Dosage	0.20–2.00 m.-% of cement
Delivery Form	25 kg sacks
Physiological Effect	May irritate skin and eyes; see Safety Data Sheet
Shelf-life	Approx. 1 year in closed original containers