specs

Section 04100
Page 3
D. Provide material with maximum amount of recycled content available that achieves performance
requirements of this Section, Part 2.2, A.
2.3 GROUT
A. Grout shall have a 28-day compressive strength of not less than 2000 psi. Proportion by volume, and
with sufficient water to produce consistency for pouring without segregation so that grout will flow into
masonry joints. Grout shall conform to CBC Section 2103A.12.
B. Fine Grout: 1 part portland cement, to which may be added not more than 1/10 part lime putty, and 3
parts sand.
1. Fine grout shall be used for all grout spaces less than 3" wide.
C. Coarse Grout: 1 part portland cement, to which may be added not more than 1/10 part lime putty, 3
parts sand and not less than 1 part nor more than 2 parts pea gravel (3/8” maximum aggregate size).
1. Coarse grout shall be used in grout spaces 3" wide or more.
D. Add “Sika Grout Aid” admixture to grout at the rate of 1 pound per 100 pounds cementititous material.
E. Provide material with maximum amount of recycled content available that achieves performance
requirements of this Section, Part 2.3, A.
PART 3 - EXECUTION
3.1 MIXING MORTAR AND GROUT
A. Accurately measure materials in suitably calibrated devices; shovel measurements are not acceptable.
Each 94lb. sack of portland cement will be considered as 1 cubic foot.
B. Place sand, cement and water in mixer in that order and mix for at least 2 minutes; then add lime putty
and continue mixing as long as necessary to secure a uniform mass, but in no case less than 10 minutes.
C. Use mixers of at least 1 sack capacity; batches requiring fractional sacks will not be permitted unless
cement is weighed for each batch.
3.2 GROUTING PROCEDURES
A. Specified under Sections 04210.
3.3 RETEMPERING
A. When necessary to re-temper mortar, add water and remix; retempering by dashing water over mortar
will not be permitted.
B. Any mortar which is unused within 30 minutes after initial mixing and any mortar that has begun to set
shall not be used.
3.4 DEFECTIVE MORTAR OR GROUT
A. Should the strength of mortar or grout fall below that specified, remainder of Work shall be adjusted to
reach required strength. Work in place representing inferior grout and mortar and indicating a strength
less than the minimum specified shall be tested by taking and testing core samples. Number and
location of cores shall be determined by Structural Engineer.
B. Should compression tests of cores fail to meet required strength, masonry shall be deemed to be
defective and shall be removed and replaced at no cost to Owner.
C. Costs relative to taking and testing of core samples shall be paid by Owner and will be deducted from
Contract Amount. Cost of patching core holes shall be borne by Contractor.
END OF SECTION
NAPA CENTURY CENTER XD 12
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