00442.00 374 Section 00442 - Controlled Low Strength Materials
Description
00442.00Scope - This Work consists of furnishing and placing controlled low -strength
materials (CLSM).
00442.01Definition - Controlled low -strength material is highly flowable lean concrete mix; a mixture
of fly ash, cement, F ine Aggregates, water and admixtures, i f necessary.
Materials
00442.10Materials - Furnish Materials meeting the following requirements:
Fly Ash ................................................................................................. 02030.10 Portland Cement .................................................................................. 02010.10
00442.11Fine Aggregates - Furnish Fine Aggregates that are commercial quality concrete Sand
00442.12Proportioning of CLSM Mixture - Furnish the following, to the Engineer, prior to using
any CLSM on the Project:
• Written certification of proposed CLSM proportions and compressive strength. • 28-Day cylinder reports from a trial CLSM batch based on above certification. Include evidence that compressive strength requirements for specific applications are met.
00442.13Compressive Strength - CLSM shall attain a 28-Day compressive strength of
100 psi - 200 psi.
00442.14Acceptance - Acceptance will be based on the Engineer's review and approval of written
certification and trial batch cylinder reports as required by 00442.12.
Measurement
00442.80Measurement - No measurement of quantities will be made for C LSM
Payment
00442.90Payment - No separate or additional payment will be made for CLSM. Payment will be
included in payment made for the appropriate items under which this Work is required.