### DETERMINING UNIT MASS (WEIGHT) OF AGGREGATES

4.2.1.4 Rod the layer of aggregate with 25 strokes of the tamping rod so the aggregate distributes evenly over the surface. Do not allow the rod to strike the bottom of the measure forcibly. 4.2.1.5 Fill the measure two-thirds full and again level and rod as in Section 4.2.1.4. The rod .

Get Price### Standard Test Method for Density (Unit Weight), Yield, and ...

C29/C29M Test Method for Bulk Density (Unit Weight) and Voids in Aggregate. C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field. C143/C143M Test Method for Slump of Hydraulic-Cement Concrete. C150/C150M Specification for Portland Cement. C172/C172M Practice for Sampling Freshly Mixed Concrete

Get Price### Lufkin Beam Pumping Units - BHGE

Do not operate pumping units without proper guards in place. Do not service well without removing the horsehead. Properly install the horsehead components: latch bolt, safety bar, and/or hinge pin. Electrical Contact Can cause severe injury or death. Keep pumping units at least 10 feet away from all overhead wires. LOTO ALL energy sources.

Get Price### PROCEDURE FOR DETERMINING ROCK WEIGHTS, SIZES AND .

17-WI-33 After the weight and "d" of each rock (except small rock, gravel) are determined, they need to be accumulated into sizes that would be held on a particular screen size such as 1.5 D50, D50, etc. The weights of the rocks that have a "d" greater than the screen size are accumulated and

Get Price### DETERMINATION OF RODDED UNIT WEIGHT OF COARSE .

Rodding the aggregates: Fill the bucket one third full and rod the aggregate layer with 25 strokes of the tamping rod, evenly distributed over the surface. Add another layer of aggregates so that the bucket is approximately two thirds full and repeat the rodding procedure. The third layer of aggregates should fill the pail to overflowing.

Get Price### The Effect of Aggregate Properties on Concrete

Aggregate is commonly considered inert filler, which accounts for 60 to 80 percent of the volume and 70 to 85 percent of the weight of concrete. Although aggregate is considered inert filler, it is a necessary component that defines the concrete's thermal and elastic properties and dimensional stability.

Get Price### 4. Bulk Density Test

Materials needed to measure bulk density: 3-inch diameter ring hand sledge wood block garden trowel flat-bladed knife sealable bags and marker pen scale (0.1 g precision) 1/8 cup (30 mL) measuring scoop paper cups 18-inch metal rod access to a microwave oven Considerations: For rocky or gravelly soils, use the alternate procedure on page 11.

Get Price### Density of Aggregate - Bulk and Relative Density - Civil ...

If the volume is unit then, Bulk Density= Mass. Unit in kg/m 3 or lb/ft 3. In this definition, the volume is that contains both the aggregates and the voids between aggregates particles. The approximate bulk density of aggregate that is commonly used in normal-weight concrete is between 1200-1750 kg/m 3 .

Get Price### Determining Moisture in Aggregate for Mix Proportioning

Mar 01, 1986· Sand can be expected to contribute about 2 to 6 percent free moisture by weight, and gravel or stone about 1 or 2 percent. Under average conditions that means that 104 pounds of sand would give you the equivalent of 100 pounds of sand in what is called a saturated surface dry (SSD) condition and 4 pounds (1/2 gallon) of free moisture.

Get Price### Concrete Testing Procedures - Tests for Slump & More - The ...

Subtract the aggregate correction factor from the dial reading and report the final value. Testing tip: A typical air content for concrete with a ¾-inch maximum-size aggregate is about 6%, and specified ranges in air content are typically minus 1 ½% and plus 1 ½% of the target value. DENSITY (UNIT WEIGHT)

Get Price### Soil Unit Weight on the Geotechnical Information Website

Unit weight of a soil mass is the ratio of the total weight of soil to the total volume of soil. Unit Weight, g, is usually determined in the laboratory by measuring the weight and volume of a relatively undisturbed soil sample obtained from a brass ring.Measuring unit weight of soil in the field may consist of a sand cone test, rubber balloon or nuclear densiometer.

Get Price### Coarse Aggregate: Definition & Density - Video & Lesson ...

The standard testing procedure for this is the American Society of Testing and Materials (ASTM) C29: Standard Test Method of Bulk Density ('Unit Weight') and Voids in Aggregate.

Get Price### DETERMINING TOTAL MOISTURE AND FREE MOISTURE IN .

A. This procedure is designed to determine the total moisture and free moisture contents of coarse and fine aggregates by drying the material with various heat sources. B. For test procedure, refer to AASHTO T 255 with the following modifications II. Reference Documents A. AASHTO R 76 – Reducing Samples of Aggregate to Testing Size

Get Price### How to Calculate Cement, Sand and Coarse Aggregate ...

Unit Weight of Water = 1000 litres/m 3 Required Amount of Water = 0.16362 X 1000 = 163.62 litres Therefore, we need 10.5 bags of cement, 0.5454 m 3 of sand, 1.09 m 3 of Coarse aggregates and 163.62 litres of water.

Get Price### Determining Moisture in Aggregate for Mix Proportioning ...

Mar 01, 1986· Sand can be expected to contribute about 2 to 6 percent free moisture by weight, and gravel or stone about 1 or 2 percent. Under average conditions that means that 104 pounds of sand would give you the equivalent of 100 pounds of sand in what is called a saturated surface dry (SSD) condition and 4 pounds (1/2 gallon) of free moisture.

Get Price### Concrete Slump Test for Workability -Procedure and Results

The tamping rod is of steel 16 mm diameter and 60cm long and rounded at one end. Sampling of Materials for Slump Test. A concrete mix (M15 or other) by weight with suitable water/ cement ratio is prepaid in the laboratory similar to that explained in 5.9 and required for casting 6 .

Get Price### PROCEDURE FOR DETERMINING ROCK WEIGHTS, SIZES AND .

4. To determine the equivalent "d", enter the graph at weight at the bottom of the chart. Proceed vertically to the intersection of the line labeled Size of Rock "d" and move horizontally to the right to read "d". 5. To determine the weight of small rock and sand-gravel, determine .

Get Price### ASTM C138 - Density (Unit Weight), Yield, and Air Content ...

Subtract the empty container weight from the full container weight (2) - (1) = weight of concrete (3) Divide the weight of concrete by the known volume (3) / (4) = density, or fresh unit weight; There are a few unique procedures listed in the ASTM C138 to remember. Slump. If < 1" = Must use vibrator capable of at least 9,000 vibrations per minute

Get Price### Bulk Density Of Aggregates

Jul 30, 2012· 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 prescribed depth and diameter and the bulk density is to be ...

Get Price### Part 6. Concrete Aggregates

The degree of moisture and compaction will affect the unit weight measurement. Therefore, ASTM has set a standard oven-dry moisture content and a rodding method for compaction. The maximum unit weight of a blend of two aggregates is about 40% fine aggregate by weight.

Get Price### Standard Penetration Test (SPT) of Soil - Procedure, Tools ...

Jun 02, 2018· Standard Penetration Test Procedure: 1. Erect the tripod over the test hole and assemble the unit. 2. Allow the spoon to rest on the bottom of the hole. 3. Drive the spoon with blows from the hammer falling 75 cm (30 inches), until either 45 cm (18 inches) have .

Get Price### Intramedullary Nailing - What You Need to Know

Feb 03, 2020· What do I need to know about intramedullary nailing? Intramedullary nailing is surgery to repair a broken bone and keep it stable. The most common bones fixed by this procedure are the thigh, shin, hip, and upper arm. A permanent nail or rod is placed into the center of the bone. It will help you be able to put weight on the bone.

Get Price### What is the weight of a 20-mm coarse aggregate in 1 cubic ...

Apr 05, 2018· Crushed Stone of 20mm is having wt. of 1600 kg/ cum so, Ans is 1600 kg or 1.6 ton

Get Price### How to Calculate Unit Weight | Sciencing

Sep 04, 2019· Unit weight is one of a number of related basic physics terms that leads some students to confusion. Also called specific weight, unit weight is in a family of terms that, loosely speaking, define and relate size (volume), amount (mass), concentration (density) and force (weight.

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