Solved 7.6 Using the following data for an unreinforced PCC
7.6 Using the following data for an unreinforced PCC Pavement slab: Design strength f'c = 4,000 psi Slab thickness = 12" Standard deviation of fc obtained from 20 samples = 200 psi Ignore any exposure requirement Use air-entrained concrete I Fineness modulus of fine aggregate = 2.60 • Maximum aggregate size = 2" and nominal maximum aggregate …
Solved Design the concrete mix according to the following
Coarse aggregate: 2 in. nominal maximum size, crushed stone Bulk oven-dry specific gravity = 2.573, absorption = 2.8% Oven-dry rodded density = 120 pcf Moisture content = 1% Fine aggregate: Natural sand Bulk oven-dry specific gravity = 2.540, absorption = 3.4% Moisture content = 4.5% Fineness modulus = 2.68
SECTION 903-AGGREGATES
2. Crushed slag shall be free of silt and clay and shall meet the quality requirements of crushed stone. It shall be reasonably uniform in density and shall have a dry-rodded weight of at least 112 kilograms perone tenth cubic meter (seventy pounds per cubic foot). 3. Gravel and chert shall be screened and all oversize material
Aggregates for Concrete
ders, cobbles, or large-size gravel. Crushed air-cooled blast-furnace slag is also used as fine or coarse aggregate. The aggregates are usually washed and graded at the pit or plant. Some variation in the type, quality, cleanli- ... concrete with a density (unit weight) of 2200 to 2400 kg/m. 3 (140 to 150 lb/ft. 3). Aggregates of expanded shale,
DETERMINATION OF RODDED UNIT WEIGHT OF COARSE AGGREGATE …
The rodded unit weight is computed in kg/m 3 (lb/ft 3) from the net weight of the rodded aggregates in the bucket divided by its volume. Computations. Calculate the rodded unit weight as follows: M SSD = (G − T)(1 + A/100)/V. M SSD = the rodded unit weight of the saturated surface dry aggregate, kg/m3 (lb/ft3)
Assigment 2 (Solution)
- Coarse aggregate: o 50 mm nominal maximum size, crushed stone o Bulk oven-dry specific gravity = 2, Absorption = 0% o Oven-dry rodded density = 1923 kg/m 3 o Moisture content =1% - Fine aggregate: Natural sand o Bulk oven-dry specific gravity = 2, Absorption = 0% o Moisture content 3% - Fineness modulus = 2.
Gravel Calculator
To calculate how much gravel you need to cover a rectangular area you need to multiply the volume by the gravel density. The volume formula for a rectangular (or square) box in cubic feet is height (ft) x width (ft) x length (ft), as seen in the figure below: For example, to fill a box with a width of 3ft and a length of 6ft, to a depth of 1ft ...
Bulk Density Of Aggregates | Loose And Compact Bulk Density
If a statement is like: A coarse aggregates with higher bulk density, then it means few of the voids can be filled by using fine aggregates and cement. For testing, British Standard (BS 812) has specified the degree of compaction. These are; Loose ( Un-compacted) Compacted; The test will be carried out by using metal cylinder having …
Rodded Unit Weight of Coarse Aggregates Test (ASTM C29)
Astm C29: Determination of the unit weight of coarse aggregates in a compacted condition. This test method is applicable to aggregates not …
Standard Test Method for Bulk Density ("Unit Weight") and Voids …
1.1 This test method covers the determination of bulk density ("unit weight") of aggregate in a compacted or loose condition, and calculated voids between particles in …
Standard Test Method for Bulk Density ("Unit Weight") and Voids …
Scope. 1.1 This test method covers the determination of bulk density ("unit weight") of aggregate in a compacted or loose condition, and calculated voids between particles in fine, coarse, or mixed aggregates based on the same determination. This test method is applicable to aggregates not exceeding 125 mm [5 in.] in nominal maximum size.
Solved Design the concrete mix according to the following
Available Materials: Air entrainer: Manufacture specification is 0.15 fl oz/1% air/100 lb cement. Coarse aggregate: 2 in. nominal maximum size, crushed stone Bulk oven-dry specific gravity=2.573, Absorption=2.8%, Oven-dry rodded density=120 pcf, Moisture content=1% Fine aggregate: Natural sand Bulk oven-dry specific gravity= 2.540, …
SECTION 901 COARSE AGGREGATE 901-1.1 Composition
901-2.1 Gravels: Gravel shall be composed of naturally occurring quartz, free from deleterious coatings of any kind. The minimum dry-rodded weight AASHTO T19 shall be …
Density of Cement Sand and Aggregate
Aggregate Density: Most of the aggregates possess a relative density within 2.4-2.9 with a similar particle density of about 2400-2900 Kg/m 3 (150-181 lb/ft 3). Density of Sand and Aggregate: Density of coarse sand is ranging between 1450-2082 kg/m 3 depending on different conditions like wet, dry, loose, dry-packed, and wet packed.
ITEM 304 AGGREGATE BASE
The Engineer will use 98 percent of the test section maximum dry density for the acceptance ... Crushed gravel. 4000. 2375. Crushed slag, 90 lb/ft 3 (1450 kg/m 3)[1] 3600. 2140. Crushed slag, 90 to ... 4500. 2670. Granulated slag. 2800. 1660 [1] Based on average dry rodded weight of standard size of slag aggregates on record at the Laboratory ...
DETERMINATION OF RODDED UNIT WEIGHT OF COARSE …
Calculate the rodded unit weight as follows: M SSD = (G − T) (1 + A/100)/V M SSD = the rodded unit weight of the saturated surface dry aggregate, kg/m3 (lb/ft3) G = …
Solved Use the following information to complete the
The following materials are available for a concrete mixture design: ASTM C 150 Type I/II Cement. Relative density of 3.15. Coarse Aggregate: well-graded ¾ in. maximum-size aggregate (MSA), crushed limestone, angular. Oven-dry specific gravity: 2.45. Absorption: 0.80%. Oven-dry rodded bulk density: 97 lb/ft 3. Moisture content of coarse ...
Design the concrete mix according to the following
Coarse aggregate: 2 in. nominal maximum size, crushed stone Bulk oven-dry specific gravity = 2.573, absorption = 2.8% Oven-dry rodded density = 120 pcf Moisture content = 1% Fine aggregate: Natural sand Bulk oven-dry specific gravity = 2.540, absorption = 3.4% Moisture content = 4.5% Fineness modulus = 2.68
Solved Design the concrete mix according to the following
Manufacture specification is 0.15 fl oz/1% air/100 lb cement - Aggregate: 1 in nominal maximum size, gravel with crushed particles - Bulk oven-dry specific gravity = 2.45, absorption = 2.5% - Oven-dry rodded density = 125 pcf - Moisture content = 1.5% - Fine aggregate. Natural sand - Only air entrained is allowed.
AGGREGATES
Mineral aggregate shall be crushed. A minimum of 95% of aggregate shall be retained on 1⁄2 in sieve. Sand equivalent 65%. When specified on the plans, provide aggregate that meets one of the requirements of Table 803.6.2-1. Micro Surfacing (continued) L.A. abrasion loss 30%. Contractor shall supply information on aggregate …
CE 280 Class Notes
Abrasion Results Typical results of losses between 10 and 40%. 40% is the max. limit Coefficient of Variation Single Operator – 2% Multilab – 4.5% Storage and Transportation Segregation mostly a problem in Coarse Aggregate dry fine aggregate may lose fines Moisture content mostly a problem in Fine Aggregate M.C. of stockpiles should be ...
The following materials are available for a concrete mixture...
The following materials are available for a concrete mixture design: ASTM C 150 Type I/II Cement Relative density of 3.15 Coarse Aggregate: well-graded ¾ in. nominal maximum-size aggregate (NMSA), crushed limestone, angular Oven-dry specific gravity: 2.65 Absorption: 1.70% Oven-dry rodded bulk density: 101 lb/ft3 Moisture content of coarse …
Classification of Aggregates
Classification of Aggregates. The variability in density can be used to produce concrete of widely different unit weights, see Table (1). The most common classification of aggregates on the basis of bulk specific gravity is lightweight, normal-weight, and heavyweight aggregates. ... Unit Weight of Dry-rodded Aggregate (kg/m 3) Unit Weight of ...
Solved Question 1 Given the following design environment and
Available Materials a) Cement All Types have a specific gravity of 3.15 b) Coarse Aggregate 25 mm maximum size crushed aggregate with the following properties: begin{tabular}{ll} Bulk Specific Gravity (OD) & = 2.573 Oven Dry Rodded Density & = 1921 kg / m 3 Absorption (on OD) & = 0.1% Moisture Content of Lab Sample & = …
Aggregate Properties Objectives
Specific Gravity Percent Absorption Density Fineness Modulus Outline Some concepts Experiments details: - DRUW - specific gravity - percentage absorption - density - …
Chapter 2
Trap rocks are classified as excellent crushed stone materials due to their resistance to chemical reactions and ability to withstand high mechanical stresses (Willett 2011). ... standards that are also commonly performed on aggregates listed previously include ASTM C127 and ASTM C128 for density, specific gravity and absorption, ASTM ...
Answered: Using the following data for an… | bartleby
Using the following data for an unreinforced PCC Pavement slab: Design strength f′c = 28 MPa Slab thickness = 300 mm Standard deviation of f′c obtained from 20 samples = 1.4 MPa Ignore any exposure requirement Use air-entrained concrete Fineness modulus of fine aggregate = 2.60 Maximum aggregate size = 50 mm and nominal maximum …
PART 9-MATERIALS
2. Crushed slag shall be free of silt and clay and shall meet the quality requirements of crushed stone. It shall be reasonably uniform in density and shall have a dry-rodded weight of at least 70 lbs/c.f.(112 kgs/0.1 m3). 3. Gravel and chert shall be screened and all oversize material may be crushed and fed uniformly back over the screen. The
Aggregates for Concrete
6.2—Definition of lightweight-aggregate concrete 6.3—Low-density concretes and associated aggregates 6.3.1—Structural lightweight concrete and associated ... gravel, crushed stone, blast-furnace slag, and lightweight aggregates that usually occupies approxi-mately 60 to 75% of the volume of concrete. Aggregate
Properties of pervious geopolymer concrete using recycled aggregates
The compressive strength of PGC was plotted as a function of dry-rodded density of aggregate as shown in Fig. 4. By linear regression, the empirical relationship with R 2 of 0.87 was derived as (4) f c ′ = 0.0132 (D r)-8.19 where f c ′ is the compressive strength of PGC (MPa) and D r is the dry-rodded density of aggregate (kg/m 3).