Lightweight Aggregate Concrete | PDF
This document discusses lightweight aggregates and their influence on concrete. It begins with an introduction to lightweight concrete and methods of producing it, including using porous lightweight aggregates. The main advantages are reducing weight and improving properties like insulation. Types of lightweight aggregates are then described such as pumice, diatomite, and …
A Comparative Study of Different Types of Fine Aggregates …
The effect of artificial sand and crush sand as fine aggregate in concrete is to substitute the natural sand content in concrete. The experimental work is mainly concerned with the study of mechanical properties like compressive strength, split tensile strength and flexural strength of concrete by full replacement of natural sand by artificial sand as fine aggregate Common river …
Test on Aggregates.ppt
Test on Aggregates.ppt - Download as a PDF or view online for free. ... Fine aggregates: It is the aggregate, which is passes through a 4.75mm IS sieve and retained on 0.7 mm. ... (IS: 2386 (part – 4) - 1963) 2. Hardness Wear and tear property of aggregate is checked (concrete used in roads and in floor surfaces subjected to heavy traffic ...
Aggregates for Use In Concrete
Aggregates •Fine Consists of natural sand, manufactured sand or crushed stone <3/8" Fine aggregate will pass the # 4 sieve • Coarse Natural or crushed stone 3/8" t 1 ½" ( )3/8" to 1 ½" (or more) Coarse aggregate is larger than a #4 sieve 4 Mineralogy • Igneous (Latin - "Fire") Formed from volcanic processes and
PowerPoint Presentation
Fine Aggregates: Greatest Affect on Water Demand Fine aggregates have between 25 and 40 times more surface area than coarse aggregates of same weight and volume. Why Aggregates …
Rubber concrete | PPT
8. METHODOLOGY In this study for different types of mixes or combination is being considered and designed as per Indian Standard Specification IS: 10262(2009) Water cement ratio- The water cement ratio we have selected according to the grade of concrete chosen and mix design to be done. The 20mm and down size rubber aggregate are used in concrete. The …
Recycled aggregates | PPT
What are recycled aggregates ? • Recycled aggregates are the aggregates produced from the processing of previously used construction materials such as concrete or masonry. • Recycled aggregates consists of …
recycled aggregate concrete | PPT
CLASSIFICATION IS RECYCLE AGGREGATE CONCRETE Material composition is the basis for classification of recycled concrete aggregate in twomain types- 1) Crushedconcrete 2) Mixed material Crushing Bulk specif ic gravity Bulk density Absorp tion (%) Crushin g value(% ) 1days Coarse Medium 2.59 1433 1220 3.2 25.4 Fine 2.35 1342 9.7 n/a 2.23 11.2 n/a ...
Recycled Aggregate Concrete | PPT
7. Classification & properties of recycle aggregate concrete Material composition is the basis for classification of recycled concrete aggregate in two main types- 1) Crushed concrete 2) Mixed material Each of these types …
Concrete- types, testing & properties | PPT
COMPRESSIVE STRENGTH TEST • Cement, fine aggregate and Coarse aggregate (upto 38mm) to be used for making concrete are weighed in the required ratio to be used in field and are thoroughly mixed, by adding requisite amount of water until the concrete appears homogeneous. • The test SPCIMENS are cast in the required sizes of cubes, 150mm …
artificial fine aggregate used in concrete ppt
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AGGREGATES.
25 Rounded aggregates are suitable to use in concrete because flaky & elongated particles reduce workability, increase water demand & reduce strength. In the case of angular particles, the bond between agg.
nitya123-github/Concrete-strength
The focus of this project is the application of machine learning process,Artificial nueral networks and their suitability to model concrete compressive strength compared with early models obtained from the literature and compared with some conventional approaches and also a recoomendation system is developed by applying various ML methods,Deep nueral network methods to predict …
PPT 2 Aggregates FOR Concrete
Fine aggregate : Aggregates passing through 4 mm sieve and predominately retained on 75 mm sieve are classified as fine aggregate. River sand is the …
A Distinct Artificial Feed Forward Neural Network (AF
A crucial material used in the construction of skyscrapers along with various kinds of facilities is concrete. The growth of infrastructure is more important than ever, especially in …
Aggregates for Use In Concrete
The maximum aggregate size used in a concrete mix is dictated by the size of the structural member and the spacing between reinforcing steel. "Design & Control of Concrete Mixtures," …
CONCRETE AGGREGATES
Polished Concrete Specialist - Polished concrete is produced by mechanically grinding the concrete surface using diamonds to reveal or expose the aggregate within the concrete substrate. Both new and existing concrete substrates can …
Development of engineered cementitious composites (ECC) …
In the production of ECC, fine silica sand is generally used according to the micromechanical design principals [1], [21], [22].However, high material cost and limited availability of fine silica sand may hinder the wider application of ECC in civil infrastructure [23].To address this challenge, iron ore tailings [23], glass [24], recycled concrete [25], coarse river …
Aggregate
Aggregate - Concrete Technology - Download as a PDF or view online for free ... Water Cement Sand* Mortar Gravel** CONCRETE STEEL REINFORCED CONCRETE Aggregate Mortar ≠ Concrete ≠ Reinforced Concrete * Fine aggregate ** Coarse aggregate 7. AGGREGATE Aggregates 9. MORTAR 13. BALLAST (RAILROADS) 14. 2 Types 16.
AGGREGATES.
INTRODUCTION OF AGGREGATES Aggregates are the materials basically used as filler with binding material in the production of mortar and concrete. They are derived from igneous, sedimentary and metamorphic rocks. They occupy per cent of the volume effect economy They should be clean, hard, strong, durable and graded in size to achieve utmost economy.
High-performance artificial aggregate prepared with recycled concrete
The RCP artificial aggregates only require sealed storage and natural curing. The artificial aggregates are nearly spherical and exhibit good early strength performance. The compressive strength of each group reaches 75% to 92% of the 28d strength at 3d, and the compressive strength of a single particle reached 8.59 MPa at 28d.
Properties of waste brick powder-based artificial fine aggregate …
River sand is a commonly used fine aggregate to prepare concrete, which has excellent quality and huge reserves all over the world [2]. The proportion of fine aggregate in concrete occupies 20 %–30 %. Approximately 50 billion tonnes of natural river sand and gravel are consumed every year [3].
USE OF COPPER SLAG AS FINE AGGREGATE ‐ A …
Various concrete mixes were prepared with 0- replacement of fine aggregates with copper slag. The results showed that flexural strength increased up to 40% replacement of copper slag, and it is recommended that …
Aggregates | PPT
It then discusses the purposes of aggregates, which include providing strength, weight, and being economically viable. It also discusses how aggregates are used in concrete, roads, and railways. The document further classifies aggregates according to their formation as natural or artificial, and according to their size as fine or coarse ...
Varieties of Artificial Stones
The different varieties of artificial stones are: a. Cement Concrete Blocks ~ These are made from a mixture of cement, fine aggregate, coarse aggregate and water. They may be cast-in-situ or cast-in-moulds (Note: cast in situ is used in the construction of piers and cast in the mould is used for steps, window sills, etc.)
CONCRETE AGGREGATES.
28 Rounded aggregates are suitable to use in concrete because flaky & elongated particles reduce workability, increase water demand & reduce strength. In the case of angular particles, …
2.artificial aggregates.pptx
13.Natural Fibre reinforced concrete.ppt. National Institute of Technology, Warangal ... 1. Used as fine aggregate in concrete 2. coarse aggregate in Portland cement concrete 3. Coarse aggregate in structural Portland cement concrete. ... Advantages of using light weight artificial aggregates[continued]: 5. Concrete using lightweight aggregate ...
Effects of different fine aggregate on concrete strength
The concrete produced from grit as fine aggregate with a water-cement ratio of 0.45, produced a maximum compressive strength of 29.56 N/mm3 at the highest curing age in days, while sand alone as fine aggregate in one of the concrete mix, produced the least compressive strength of 17.33 N/mm3.
Aggregates for Use In Concrete
15 Deleterious Substances Item Mass % of Total Sample Clay lumps and friable particles 3.0 Material finer than 75 micron (No. 200) sieve: Concrete subject to abrasion 3.0* All other concrete 5.0* Coal and lignite: Where surface appearance of concrete is of importance 0.5 1.0 Source: Table 1 Limits for Deleterious Substances in Fine Aggregate for Concrete, ASTM C 33.
Aggregates used in Concrete | PPT
The angular aggregates are superior to rounded aggregates from the following two points of view: ( a ) Angular aggregates exhibit a better interlocking effect in concrete, which property makes it superior in concrete used for roads and pavements. ( b ) The total surface area of rough textured angular aggregate is more than smooth rounded ...