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Title: 229R-99: Controlled Low-Strength Materials (Reapproved 2005)
Year of Publication: 1999
Number of Pages: 15
This document is: Active
Nonmember Price: $31.50
ACI Member Price: $17.00
Order Code: 22999
Abstract: Controlled low-strength material (CLSM) is a self-compacted, cementitious material used primarily as a backfill place of compacted fill. Many terms are currently used to describe this material including flowable fill, unshrinkable fill, controlled density fill, flowable mortar, flowable fly ash, fly ash slurry, plastic soil-cement, soil-cement slurry, other various names. This report contains information on applications, material properties, mix proportioning, construction and quality-control procedures. This report's intent is to provide basic information on CLSM technology, with emphasis on CLSM material characteristics and advantages over conventional compacted fill. Keywords: aggregates; backfill; compacted fill; controlled density fill; controlled low-strength material; flowable fill; flowable mortar; fly ash; foundation stabilization; low-density material; pipe bedding; plastic soilcement; preformed foam; soil-cement slurry; trench backfill; unshrinkable fill; void filling.
Contents: Chapter 1 - Introduction Chapter 2 - Applications 2.1 General 2.2 Backfills 2.3 Structural fills 2.4 Insulating and isolation fills 2.5 Pavement bases 2.6 Conduit bedding 2.7 Erosion control 2.8 Void filling 2.9 Nuclear Facilities 2.10 Bridge Reclamation Chapter 3 - Materials 3.1 General 3.2 Portland cement 3.3 Fly ash 3.4 Chemical admixtures 3.5 Water 3.6 Aggregates 3.7 Non-standard materials Chapter 4 - Properties 4.1 Introduction 4.2 Plastic properties 4.3 In-service properties Chapter 5 - Mix proportioning Chapter 6 - Construction 6.1 General 6.2 Mixing 6.3 Transporting 6.4 Placing Chapter 7 - Quality control 7.1 General 7.2 Consistency and unit weight 7.3 Strength tests Chapter 8 - Low density CLSM using preformed foam, 8.1 General 8.2 Applications 8.3 Materials 8.4 Properties 8.5 Proportioning 8.6 Construction Chapter 9 - References
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