physical properties of aggregate ppt

Mechanical Characterization of Aggregates

Mechanical Properties of Aggregates [email protected] California Bearing ratio (CBR) Value Basically a penetration test Piston penetrates soil at constant rate 0.05 in/min Pressure is recorded Take the ratio to the bearing capacity of a standard rock Range: 0 (worst) –100 (best) Type equation here. CBR= Pressure to cause 0.1" penetration to the ...

PROPERTIES OF RECYCLED AGGREGATE CONCRETE

which the aggregate is made by recycling and also on recycling methods. Nonetheless, in cases where the recycled aggregate comes from many different sources, the uneven quality, i.e. variations in the properties of recycled aggregate are much more pro-nounced than as is the case with natural aggregates. Figure 2.

Fine Aggregate: Definition, Size, Density and Properties ...

Fine aggregate is the essential ingredient in concrete that consists of natural sand or crushed stone. The quality and fine aggregate density strongly influence the hardened properties of the concrete.. The concrete or mortar mixture can be made more durable, stronger and cheaper if you made the selection of fine aggregate on basis of grading zone, particle shape and surface texture, abrasion ...

Physical Properties of Bioretention Soils

Physical Properties of Bioretention Soils Scott Wikstrom City of Walnut Creek Soil Variability Vertical Variation Horizontal Variation Parent Rock Material Deposition Method Contra Costa Soil Spec – Part III Performance Spec Minimum 5 inches per hour infiltration rate Support Healthy Plant Growth Two Mixes provided: Fine Sand with Compost ASTM C33 Fine Aggregate "Concrete Sand" Contra ...

High Density Concrete: Types and Properties | Concrete ...

Steel and iron aggregates in the form of shots and punching scrap for use as a heavy weight aggregate are also available in the market. They are known as artificial aggregate. While selecting the aggregate to be used, the availability of the aggregate locally and their physical properties should be considered.

Soil Physical Properties as Influenced by Cropping and ...

termination of physical properties. Wheat was emerging from winter dormancy, about 10-cm tall, and the sorghum plots were bare. Five 5-kg samples of soil were taken from the top 5 cm of the Ap horizon with a flat shovel from each treat-ment plot. These samples were used for determination of aggregate size distribution, dry and wet aggregate ...

Lecture 4. Aggregates

CIV-E1010 Building Materials Technology (5 cr) (4/27) 4.1.1.4 Recycled aggregates (4) • Recycled aggregate is derived from crushing inert construction and demolition waste.

7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN .

Sep 12, 2015· Tests on Aggregate Aggregate plays an important role in pavement construction. Aggregates influence, to a great extent, the load transfer capability of pavements. Hence it is essential that they should be thoroughly tested before using for construction. Not only that aggregates should be strong and durable, they should also possess proper shape and size to [.]

Aggregates for Concrete - Memphis

The aggregates are usually washed and graded at the pit or plant. Some variation in the type, quality, cleanli-ness, grading, moisture content, and other properties is expected. Close to half of the coarse aggregates used in portland cement concrete in North America .

CHAPTER 1. SOIL PHYSICAL PROPERTIES

Surface area of soil affects its physical and chemical properties and is largely determined by amount of clay present in soil: Specific surface area of soil particles Effective Area Specific Surface Area Particle Diameter (cm) Mass (g) (cm2) (cm2 g-1) Gravel 2 x 10-1 1.13 x 10-2 1.3 x 10-1 11.1 Sand 5 x 10-3 1.77 x 10-7 7.9 x 10-5 444.4

PHYSICAL PROPERTIES OF AGGREGATES

Physical Properties of Aggregates 30 What Affect Does F&E Have on Performance? •Tend to break under the roller exposing uncoated faces which may lead to stripping of the asphalt film off the aggregate in the presence of moisture •Particles tend to orient flat .

Concrete Physical Properties. Mechanical Properties ...

Concrete Physical & Mechanical Properties 13 Aggregate Bridge Engin eering Section Technical Standards Branch BIM Bridge Inspection and Maintenance ... Microsoft PowerPoint - 5. Concrete Advanced Physical & Mechanical Properties October 2016.ppt [Compatibility Mode] .

Aggregates: Physical Properties and Mechanical Properties

Physical Properties of Aggregate: Bulk Density The cylindrical measure is filled about 1/3 each time with thoroughly mixed aggregate and tamped with 25 strokes by a bullet ended tamping rod, 16 mm diameter and 60 cm long. The net weight of the aggregate in the measure is determined and the bulk density is calculated in kg/litre.

Physical and Chemical Properties

Two basic types of properties of matter: Physical properties and Chemical properties: Physical Properties Physical properties are used to identify, describe and classify matter. Characteristic of a substance that can be observed (using your senses) without changing the substance into something else.

WHAT ARE THE PROPERTIES OF AGGREGATES FOR CONCRETE ...

Properties of aggregates. Introduction Strength of aggregate Particle shape and texture Grading Moisture content Classification of aggregate. Aggregates Aggregates commonly considered as inert filler material which occupy 60 to 80 percent of the volume of concrete/70 to 85 percent of the weight of concrete. Sand, gravel and crushed stone are the primary aggregates used.

Report on Determining the Reactivity of Concrete ...

aggregate is deemed to be non-deleteriously-reactive, it can be accepted for use in concrete with no further consideration of mitigation (assuming that the physical properties of the aggregate render it suitable for use). If the aggregate is found to be deleteriously reactive, it must then be determined ...

Aggregates ppt - LinkedIn SlideShare

Apr 28, 2013· Aggregates are usedas filler in mortar and concreteand also to reduce their cost. 4. CLASSIFICATIONOFAGGREGATES 5. Depending upon the size oftheir particles aggregates areclassified as:(1) Fine aggregates(2) Coarse aggregates 6. 7(1) Fine Aggregates:Aggregates whose particles passthrough 4.75 mm IS sieve are termedas fine aggregates.

Aggregates - LinkedIn SlideShare

Jan 14, 2015· Physical properties of aggregates  Strength  Hardness  Toughness  Durability  Porosity  Water absorption 12. Strength of aggregates  In practice, majority of normal aggregates are considerably stronger than concrete  A good average value of crushing strength of aggregates is 200N/mm2. 13.

Laboratory Experience: Physical Properties of Aggregates

The key physical properties or characteristics are:  Gradation  Cleanliness  Hardness  Abrasion, wear, and degradation  Aggregate shape The goal of this lesson is that you participate in at least one lab related to each key aggregate characteristic.

What is Concrete and what are the Properties of Concrete ...

Mar 16, 2017· What is Concrete and what are the Properties of Concrete. Concrete is a mixture of portland cement, water, aggregates, and in some cases, admixtures. The cement and water form a paste that hardens and bonds the aggregates together. Concrete is often looked upon as "man made rock". Concrete is the most widely used construction material in ...

7 Lab Tests on Aggregates to Make Better Concrete for ...

For aggregates, 7 important tests are identified which determine the quality of aggregate. In this article we explore the importance of aggregate testing, various tests on aggregates and all the important properties of aggregates. Aggregate is one of the primary building materials and constituent of .

3 Aggregate Properties - IN.gov

PHYSICAL PROPERTIES The physical properties of aggregates are those that refer to the physical structure of the particles that make up the aggregate. ABSORPTION, POROSITY, AND PERMEABILITY The internal pore characteristics are very important properties of aggregates.

Properties of Cement- Physical & Chemical - Civil Engineering

Properties of Cement- Physical & Chemical Cement, a popular binding material, is a very important civil engineering material . This article concerns the physical and chemical properties of cement, as well as the methods to test cement properties.

TESTING OF PHYSICAL-MECHANICAL PROPERTIES OF .

aggregates One of physical and mechanical properties of coarse aggregate used for a wearing course of asphalt pavement is the resistance to repeated freezing and thawingthree test specimens that is cycles (in Lithuania 40–70 cycles). When the temperature drops below zero the ice crystals, having formed in micro-pores of coarse aggregate of ...