<-- Menu >-- Norlite Corporation
628 S. Saratoga Street
Cohoes, NY 12047
Phone (518) 235-0030
Fax (518) 235-0233
E-mail: farchambault@norliteagg.com
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Masonry

Smart Wall

SmartWall Masonry

Introduction

Norlite is proud to have been serving the block making industry for over 20 years. Rotary kiln lightweight concrete masonry units are providing many economic benefits for the modern block producing industry.

These low density load bearing and non-load bearing units conserve costly energy which is a prime concern to architects and owners. Since thermal resistance varies inversely with the unit weight, lightweight concrete masonry units have substantially better thermal insulation properties than normal weight concrete block as the U factor tables verify.

Norlite is a chemically inert manufactured lightweight aggregate which causes no staining, popouts, disintegration or adverse reaction to metal or steel in construction.

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Blending

Norlite block mix is a controlled varying combination of 3/8" and fine (3/16" - 0) aggregates. These aggregates are stored in separate silos equipped with calibrated feeders for the specific purpose of providing aggregate blends compatible with available natural sand to produce a desired block texture.

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Typical Sieve Analysis

88/12 Block Mix
Sieve No. Percent Retained (Cumulative) Percent Passing ASTM C 331
1/2 0
100
3/8 0
90-100
4 13.8 86.2 65-90
8 35.4 64.6 35-65
16 57.9 42.1 —
30 75.4 24.6 —
50 85.5 14.5 10-25
100 91.0 9.0 5-15
Fineness Modulus 3.59
Dry Loose Weight Ib./cu. ft. 56.5

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Typical Sieve Analysis

75/25 Block Mix
Sieve No. Percent Retained (Cumulative) Percent Passing ASTM C 331
1/2 0 100 100
3/8 0 100 90-100
4 19.6 80.4 65-90
8 43.8 56.2 35-65
16 66.3 33.7 —
30 80.1 19.9 —
50 87.7 12.3 10-25
100 91.7 8.3 5-15
Fineness Modulus 3.89
Dry Loose Weight Ib./cu. ft. 56.5

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Norlite Block Mix
Mix:
Cement lbs.

Blend Ibs.

Sand Ibs.

sp. gr. =

F.M. =

Yield Per Batch

Blocks Per Sack Cement

Plastic Weight of Block

Air Dry Weight of Block

7 Day Strength

28 Day Strength

Texture

Type of Curing:

High Pressure (Autoclave)

Low Pressure

Remarks:

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Block Weight vs. Density

The density of a masonry unit can be the determining factor of fire resistance, labor productivity, acoustical properties and energy efficiency.

Various correlations have been made between the density and resistance values of masonry. However, there is some confusion between the density of a masonry unit and the weight of the unit.

The following chart contains a convenient method of estimating the density of various masonry units given the oven dry weight of the unit.

HOLLOW UNIT APPROXIMATE OVEN DRY WEIGHT OF BLOCK WHEN DENSITY IS:
NUMBER OF CORES LIGHTWEIGHT MEDIUM WEIGHT
80 #/cu.ft. 85 #/cu.ft. 95 #/cu.ft. 105 #/cu.ft. 115 #/ cu.ft.
6x8x16 2 Core 18 19 21 23 25.5
6x8x16 3 Core 18.5 19.5 22 24 26.5
8x8x16 2 Core 22.3 23.5 26.5 29 32
8x8x16 3 Core 23.7 25 28 31 34
10x8x16 2 Core 27.5 29 32 35.5 39
10x8x16 3 Core 29.5 31 34.5 38.5 42
12x8x16 2 Core 31.8 33.5 37.5 41.5 45
12x8x16 3 Core 35.1 37 41 45.5 50
6x8x18 2 Core 19 20 22.5 25 27
6x8x18 3 Core 20.9 22 25 27.5 30
8x8x18 2 Core 24.2 25.5 29 32 35
8x8x18 3 Core 25.6 27 30.5 33.5 37
10x8x18 2 Core 30 31.5 35 39 42.5
10x8x18 3 Core 33.2 35 39 43 47
12x8x18 2 Core 33.7 35.5 39.5 43.5 48
12x8x18 3 Core 36.1 38 43 47.5 52
APPROXIMATE BATCH WEIGHTS FOR ABOVE DENSITIES
ASTM C-90 LOAD BEARING - 50 FT.3 BATCHES
MATERIALS
Cement 450 450 450 450 450
Norlite 2600 2400 2000 1700 1000
Sand
700 1425 2100 3000

Yield - 8" Block 136 150 146 144 140
Dry Weight 22.4 23.5 26.5 29.0 32

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Copyright 1998, Norlite Corporation, all rights reserved.