Specification

ManualsBrandsQUIKRETE ManualsCement Mix123050

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Note - Products meeting ASTM C887 are accepted by BOCA, SBCCI

and IBC for use in dry stack construction and for damp-proofing of

basement walls.

PHYSICAL/CHEMICAL PROPERTIES

QUIKWALL

SBC meets the requirements of ASTM C887 as shown

in Table 1. The QUIKWALL

SBC system of block construction

provides walls of superior strength as shown in Table 2. QUIKWALL

SBC not only provides improved flexural and racking strength, but

greater impact resistance. Recommended design requirements for

non-reinforced surface bonded walls of hollow concrete masonry units

are based on gross area of CMU.

Allowable stress - QUIKWALL

SBC meets ANSI A41.1 except as

follows:

• Compressive, 45 psi (0.3 MPa)

• Shear, 10 psi (0.07 MPa)

• Flexural horizontal span, 30 psi (0.2 MPa)

• Flexural vertical span, 18 psi (0.1 MPa)

Requirements for lateral supports, minimum wall thickness, and

height-to-thickness ratios are the same for QUIKWALL

SBC as for

mortared construction.

ENVIRONMENTAL CONSIDERATIONS

QUIKWALL

SBC walls are almost impermeable to air and water,

although they are not a vapor barrier. QUIKWALL

SBC is

noncombustible and adds to the fire rating of concrete masonry units.

QUIKWALL

SBC resists air penetration, sound transmission and

water penetration, while at the same time providing structural strength

improvement.

QUIKWALL

SBC adds thermal resistance or R-value of

approximately 0.4 ft2 × h × °F/Btu (0.07 m2 × K/W) to the cross

section of a wall. Table 3 contains environmental property test data

showing comparisons between uncoated and coated block surfaces

TABLE 1 PHYSICAL PROPERTIES OF QUIKWALL

Flexural strength, ASTM C887

1 day 450 psi (3.1 MPa)

7 days 700 psi (4.8 MPa)

28 days 800 psi (5.5 MPa)

Compressive strength, ASTM C887

1 day 1600 psi (11 MPa)

28 days 3500 psi (24.1 MPa)

INSTALLATION

GENERAL

QUIKWALL SBC is designed to be used in the construction of new

concrete block walls where the walls are laid up dry stacked (in a

running bond pattern) without mortar above the first course in

accordance with ASTM C946. Grout, reinforcing, anchorage and

control joints are the same as for conventional mortared walls as

designated by The American Concrete Institute (ACI) and National

Concrete Masonry Association (NCMA). QUIKWALL

SBC must be

applied to both sides of dry-stacked concrete block at a minimum of

1/8" (3.2 mm) thickness. Porous walls must be pre-wet prior to

application of QUIKWALL

SBC to avoid water being withdrawn from

the mixture. Premature drying on the wall will prevent proper

hydration, thereby causing the surface to be chalky and perhaps

exhibit map or craze cracking. After application of QUIKWALL

SBC

and after final set is achieved, dampen QUIKWALL

SBC walls to

ensure proper curing and hydration. QUIKWALL

SBC can be applied

by trowel or spray. A one-coat application is all that is required as

long as the surface texture is accomplished before the QUIKWALL

Surface Bonding Cement attains initial set. Walls constructed by this

technique are structurally twice the flexural strength of concrete block

walls built with conventional mortar.

REHABILITATING & RENOVATING WALLS

The performance characteristics of QUIKWALL

SBC make it

adaptable for rehabilitating and renovating existing wall surfaces. Old

walls coated with QUIKWALL

SBC on one side will exhibit

structurally improved environmental properties and a new aesthetic

look. The use of QUIKRETE

Acrylic Fortifier with QUIKWALL

SBC

is required when application is made to other than uncoated block

wall surfaces. The installation of galvanized expanded metal lath may

also be required for walls that have been previously painted or

coated, or structural walls to which a cementitious modified system is

not adaptable due to variations in thermal expansion.

SURFACE FINISHES

QUIKWALL

SBC surfaces can be given attractive textured finishes

by using suitable spray equipment or with plasterer’s hand tools.

Surface textures from a smooth surface finish to very deep relief

stucco can be achieved. It is also possible to provide accent panels to

simulate exposed aggregate concrete or to provide a simulated brick

wall appearance.

MIXING

Machine mixing is recommended. Mix 1 gal (3.8 L) of clean water with

each 50 lb (22.7 kg) bag of QUIKWALL

SBC. Place the water in the

mixer and add the QUIKWALL

SBC to the water. Adjust water as

necessary to achieve desired consistency. Do not use more than 1

1/2 gal (5.7 L) of water per bag. Mix no more than 3 minutes to avoid

filamentizing the glass fibers.

CURING

QUIKWALL

SBC walls must be fog cured after having achieved final

set. This is essential to ensure proper hydration of the thin surface

application.