O'Brill Company

Construction Specialty Suppliers

       6626 N. Milwaukee Ave.

Niles, IL 60714

773-775-1122 or 847-647-0005

FAX 847-647-7819

Since 1967

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588 Precision Grout




NO. 380


Provides excellent workability and high yields designed to cut placement time costs.

SEALTIGHT 588 PRECISION GROUT is a non-corrosive, non-gaseous, high-strength, easy-to-use and economical material developed for a wide range of placement consistencies, excellent workability, adequate placement time and
high-yield cost efficiencies.

Technical Description
SEALTIGHT 588 PRECISION GROUT is a Portland Cement base product. It is non-corrosive, non-gaseous and provides high density, high initial and ultimate flexural and compressive strengths. Its high yields help cut in-place grouting costs. It can be mixed quickly, as needed, on the job-site.

588 GROUT offers exceptional workability and is easily placed by pouring or pumping. The product is designed to give non-shrink performance under various conditions, in interior or exterior applications.

588 is suggested for precision grouting of machinery bases, generators, rolling mills, punch presses, compressors, etc.; structural grouting of precast columns, steel columns, crane rails, precast beams, etc.; anchoring of guard rails, sign posts, bridge seats, anchor bolts, guide wires, dowels, etc.

Features and Benefits

bulletHigh-flow, high-density, high initial and ultimate flexural and compressive strengths
bulletNon-shrink performance under various conditions, in interior or exterior applications
bulletJoins, supports and anchors...a multiplicity of uses
bulletQuickly and easily placed by pouring or pumping
bulletMixes quickly on the job site as needed
bulletOffers exceptional workability and high grout yield...cuts overall grouting costs
bulletResists most oils, gasoline, water, solvent and alkalis
bulletExtendable up to 50%
bulletNo site batching required for consistent results

Application Tools


Mortar Mixer
Rubber-Tipped Blades



All grouting should be done using established procedures according to American Concrete Institute recommendations: ACI 351.1R-93 "Grouting for Support of Equipment and Machinery"

SURFACE PREPARATION: All grout surfaces must be clean, dry and completely free of laitance, oil, grease, other coatings and any other contamination. Unsound concrete must be chipped out, leaving surface level, but rough. Grout area should be saturated with water 12-24 hours prior to grouting. Remove all excess water before placing grout. Surface should be saturated, surface dry (SSD).

FORMING: Method of forming must provide for rapid, continuous grout replacement. For pouring, allow a minimum clearance of 3" for entry and 6" minimum grout "head". Forming must also provide for venting to avoid entrapment of air. Provide 1/2" minimum form clearance on all sides and 1" clearance for "head".

MIXING: Small quantities of 588 GROUT may be hand mixed in a concrete mixing pan until lump-free.. For large quantities and continuous pours, mix using a mortar mixer with rubber-tipped blades or appropriate grout pump for a minimum of 5 minutes. Use minimum water required to produce desired placement consistency. Use 6.5 pts. (3.1 liters) of water per bag of grout for plastic consistency; 7.25 pts. (3.4 liters) for medium flow (pourable) and 8.25 pts. (3.9 liters) for high flow.

Mix in 2 steps: Add 2/3 of water requirement...add grout...after partial mixing, add remainder of water for desired consistency. Thoroughly mix total quantity for 2 to 3 minutes. Do not mix more than can be placed in 30 minutes.

PLACEMENT: 588 Precision Grout is easily placed by pouring or pumping; compaction can be accomplished by rodding or light vibrating. Place grout on one side, flowing to opposite and adjacent sides to avoid entrapment of air. When necessary, provide vent holes. Grout "head" and excess grout may be removed after initial set.

CURING: Forms may be removed after grout has hardened to an initial set, usually within 4 to 6 hours. At this point, make final finish. Prevent rapid loss of water by covering with wet burlap during first 48 hours or apply appropriate SEALTIGHT Curing or Curing and Sealing Compound. (We suggest SEALTIGHT 1640-White or CS-309-1315).

Cost reductions are realized by extending with clean, 3/8" (9.5mm) pea gravel. In applications where grout thickness is to be 2" to 5" (50 to 130mm), up to 25% of aggregate, based on weight of grout, may be added. For thicknesses over 5" (130mm) up to 50% of aggregate may be added. Such additions may be made to the flowable mix.

50 lb. (22.7 kg) moisture-resistant polyethylene bags

Corps of Engineers Specification: CRD-C 621
USDA Accepted
ASTM C 1107

Each 50 lb. (22.7 kg) bag yields 0.43 to 0.64 cubic feet (0.0122 cubic meters) of in-place grout using the median water ratio level, dependent upon rate of extension.

Read and follow application information and precautions. Refer to Material Safety Data Sheet for complete Health and Safety Information.

Technical Data; Evaluations made in accordance with CRD-C 621 '80
   per ASTM C 827-95a
Mix Ratio per 50 lb. bag

Flow per ASTM C 230-90
5 Drops/Flow Table
Flow per ASTM C 939-94a
Flow Cone

6.5 Pints
(3.07 Liters)

7.25 Pints
(3.43 Liters)

8.25 Pints
(3.89 Liters)

28 Secs.
SET TIME per ASTM C 192-92
Initial Set 1 hr.  3 hrs.   5 hrs..
Final Set  3 hrs..  5 hrs..  7 hrs.
24 hours
3 days
7 days
28 days



1 day
3 days
7 days
28 days

psi (MPa)
4,233 (29.2)
6,308 (43.5)
7,987 (55.1)
10,792 (74.5)

psi (MPa)
3,183 (22.0)
5,167 (35.7)
6,250 (43.1)
8,008 (55.3)

psi (MPa)
1,575 (10.9)
3,617 (25.0)
4,742 (32.7)
5,900 (40.7)
* All application and performance properties are typical for this material.
** These values should only be used as a guide for determination of suitability by qualified persons.

Pullout and Torque Tests
Reinforcing Bar Pullout  No. 6 deformed rebars grouted in 2.25" (57.2mm) diameter and 6" (152.4mm) deep core in 4,000 psi (27.6MPa) concrete. Load applied at a rate of 0.25"/min. (6.35mm/min.).  Average load: 18,000 lbs. (124.2 MPa) for concrete failure after 7 day cure 
Machine Bolt Pullout 3/4" (19mm) diameter machine bolts (without washers) grouted in 2.25" (57.2mm) diameter and 6" deep core in 4,000 psi (27.6 MPa) concrete. Load applied at a rate of 0.25"/min. (6.35mm/min.). Average load: 20,630 lbs. (142.3 MPa) for concrete failure after 7 day cure
Machine Bolt Torque 3/4" (19mm) diameter machine bolts (without washers) grouted in 2.25" (57.2mm) diameter and 6" deep core in 4,000 psi (27.6 MPa) concrete. Load applied at a rate of 0.25"/min. (6.35mm/min). Average torque values in excess of 425 ft./lbs.
(5.8 x 10 m/kn)

 This material last updated January, 2001.

W. R. MEADOWS, INC. warrants that, at the time and place we make shipment, our materials will be of good quality and will conform with our published specifications in force on the date of acceptance of the order. THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the exclusive remedy for breach of this Warranty, we will replace defective materials, provided, however, that the buyer examine the materials when received and promptly notify us in writing of any defect before the materials are used or incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has shipped the materials, all our Warranty and other duties with respect to the quality of the materials delivered shall conclusively be presumed to have been satisfied, all liability therefore terminates, and no action for breach of any such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event be liable for consequential damages. Unless otherwise agreed to in writing, no warranty is made with respect to materials not manufactured by W. R. MEADOWS, INC. We cannot warranty or in any way guarantee any particular method of use or application of the performance of materials under any particular condition. Neither this Warranty nor our liability may be extended or amended by our salesmen, distributors or representatives, or by our distributor's representatives, or by any sales information or drawings.

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Copyright 2002 O'Brill Company
Last modified: August 09, 2004