guide for precast cellular concrete floor, roof, and wall units
guide for consolidation of concrete
... and wall forms: Centrifu- gal force = 0.5 [(mass of form) + 0.2 (concrete mass)]. 2. For stiff mixtures in pipe and other rigid forms: Centrif- ugal force = 1.5 [(weight of form) + 0.2 (concrete ... consolidation of concrete by permitting place- ment with less consolidation effort. Refer to reports of ACI Committee 226 for more information regarding these mate- rials. The...
Ngày tải lên: 24/10/2014, 15:47
guide for design and construction of concrete parking lots
... areas and access for delivery vehicles. The design and construction of concrete slabs for parking lots and outside storage areas share many similarities with the design and construction of streets ... Performance and Design of GUIDE FOR DESIGN AND CONSTRUCTION OF CONCRETE PARKING LOTS 330R-21 Plain Concrete Pavement,” Highway Research Re...
Ngày tải lên: 24/10/2014, 15:47
guide for measuring, mixing, transporting, and placing concrete
... methods of placing concrete. 304R-1 7MEASURING, MIXING, TRANSPORTING, AND PLACING CONCRETE 5.2—Planning A basic requirement in all concrete handling is that both quality and uniformity of the concrete, ... 304R-1 5MEASURING, MIXING, TRANSPORTING, AND PLACING CONCRETE Fig. 5.2(a) to (d)—Correct and incorrect methods of placing concrete. 304R-16 ACI COMMIT...
Ngày tải lên: 24/10/2014, 15:47
guide for use of normal weight and heavyweight aggregates in concrete
... 221R-1 This guide presents information on selection and use of normal weight and heavyweight aggregates in concrete. The selection and use of aggregates in concrete should be based ... routine inspection of the material source and of the aggregate processing plant and handling system, all the way through to the point of batching; routine sam- pling...
Ngày tải lên: 24/10/2014, 15:48
guide for precast concrete wall panels
... Editorial subcommittee This guide presents recommendations for precast wall panels. This guide should be used with ACI 318 “Building Code Requirements for Reinforced Concrete which may be legally ... designing, manufacturing, and erecting precast concrete wall panels. Although the focus is on precast wall panels produced in established precasting plants, site precas...
Ngày tải lên: 24/10/2014, 17:26
guide for the analysis, design, and construction of concrete-pedestal water towers
... 371R-5 3.1—General 3.2—Concrete 3.3—Formwork 3.4—Reinforcement 3.5—Concrete finishes 3.6—Tolerances 3.7—Foundations 3.8—Grout Guide for the Analysis, Design, and Construction of Concrete-Pedestal Water Towers Reported ... ASTM A 497 are permitted for reinforcement resisting other forces, and for shrinkage and temperature steel. 371R-1 5GUIDE FOR CONCRETE-PED...
Ngày tải lên: 24/10/2014, 17:26
guide for selecting proportions for high-strength concrete with portland cement and fly ash
... ACI 211.4R-93 (Reapproved 1998) Guide for Selecting Proportions for High-Strength Concrete with Portland Cement and Fly Ash Reported by ACI Committee 211 Olga Alonzo* William ... of the cement and fly ash. In Tables 4.3.5(a) and (b), recommended maximum w/(c+p) are given as a function of maximum-size aggregate HIGH-STRENGTH CONCRETE WITH PORTLAND...
Ngày tải lên: 24/10/2014, 17:40
guide for submittal of concrete proportions
... all of these aggregate properties influ- ence the proportioning of the concrete mixture, they should be submitted to support the proposed mixture proportions. GUIDE FOR SUBMITTAL OF CONCRETE PROPORTIONS ... selection of the appropriate f cr ′ . Submittal of concrete mixture proportions should con- tain the method used to select f cr ′ for each class of concre...
Ngày tải lên: 24/10/2014, 17:40
guide for the design and construction of fixed offshore concrete structures
... B.11- Other factors criteria PREFACE Concrete structures have been used in the North Sea and other offshore areas of the world. With the rapid expansion of knowledge of the behavior of concrete structures ... for consideration by the designer. The design of offshore structures requires much creativity of the designer, and it is intended that th...
Ngày tải lên: 24/10/2014, 17:40
guide for concrete floor and slab construction
... is applicable to the construction of normal weight and structural CONCRETE FLOOR AND SLAB CONSTRUCTION 302.1R-3 lightweight concrete floors and slabs made with conventional portland and blended cements. The ... ACI 224 for a detailed discussion of cracking in reinforced and nonreinforced concrete slabs. This guide describes how to produce high quality concrete sl...
Ngày tải lên: 24/10/2014, 17:44
guide for the use of preplaced aggregate concrete for structural and mass concrete applications
... Reinforced Concrete Guide for Formwork for Concrete Specification for Concrete Aggregate Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete Specification for Portland Cement Specification ... Mixtures for Preplaced- Aggregate Concrete Test Method for Flow of Grout for Preplaced- Aggregate Concrete (Flow Cone Method) Te...
Ngày tải lên: 24/10/2014, 17:44
guide for the use of volumetric-measuring and continuous-mixing concrete equipment (reapproved 1997)
... measurement and continuous mixing have a long history of producing concrete. For many years the concept of “one shovel of cement, two shov- els of sand, and three shovels of stone” was used to produce concrete. ... (Gravimetric) of Concrete C 143 Standard Test Method for Slump of Portland Cement Concrete C 173 Standard Test Method for Air Content of Freshly...
Ngày tải lên: 24/10/2014, 17:44
guide for evaluation of concrete structures prior to rehabilitation
... l 0 00 STRUCTURAL PERFORMACE l 0 l UNIFORMITY OF CONCRETE 0 0 l . l . EVALUATION OF STRUCTURES PRIOR TO REHABILITATION Table 6.2 -Evaluation of properties of reinforcing steel PROPERTIES ... used for evaluation of concrete structures prior to rehabilitation. The procedures should be used as a guide and are not in- tended to replace judgment by...
Ngày tải lên: 24/10/2014, 21:59
guide for precast cellular concrete floor, roof, and wall units
... for Concrete Reinforcement A 615 Standard Specification for Deformed and Plain Billet- Steel Bars for Concrete Reinforcement C 33 Standard Specifications for Concrete Aggregates C 144 Standard ... portland cement slurry or hot dipped zinc coating. CHAPTER 3 CONCRETE PROPERTIES 3.1—Compressive strength Low-density concrete used in precast reinforced cellular concrete...
Ngày tải lên: 24/10/2014, 22:11
guide for the design, construction, (reapproved 1999) and repair of ferrocement
... here and represent the current state of the art. The procedure used on a particular project should be based on the experience and the ingenuity of the builders and the judgment of the engineer. DESIGN, ... cause, and likelihood of the cause still being active. The method of repair will be dictated by the type of damage, the availability of spe...
Ngày tải lên: 24/10/2014, 22:11