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The Utilization of Recycled Masonry Aggregate .

2.1. Recycled Aggregate. This research used one type of NA, two types of RMA, and one type of recycled EPS. Both types of RMA originated from construction and demolition waste and were delivered in fractions of 0–8 and 8–16 mm by a Czech recycling center (see Figure 1).For utilization as a substitute for fine-grained aggregate, in mixtures with an aggregate of fraction 0–16 mm in various ...

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Coconut Shell as a Substitute for Coarse .

Coconut Shell as a Substitute for Coarse Aggregate in Concrete. Article (PDF Available) · January 2016 with 5,939 Reads How we measure 'reads' A 'read' is counted each time someone views a ...

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Concrete: Cement Substitutes - GGBS, PFA and .

Concrete: Cement Substitutes. GGBS Producing cement uses a great deal of energy, so finding a waste product that can substitute for cement makes good environmental sense. To varying degrees, cement substitutes work in two ways: • First, they hydrate and cure like portland cement. • Second they are "pozzolans," providing silica that reacts with hydrated lime, an unwanted by-product of ...

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Concrete aggregate alternatives - Appropedia: .

21.11.2017 · Concrete with glass aggregate is a material mixture that has a lot of potential but also a lot keeping it from reaching this potential. Any type of glass when broken down to about #8 to #4 sieve. With compression strengths comparable to that of normal weight concrete and when glass powder has the same glueing effect as cement, Glascrete is the best aggregate alternative of the list. Under ...

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Recycled Glass in Concrete - ConcreteIDEAS

Conventional concrete aggregate consists of sand (fine aggregate) and various sizes and shapes of gravel or stones. However, there is a growing interest in substituting alternative aggregate materials, largely as a potential use for recycled materials. While there is significant research on many different materials for aggregate substitutes (such as granulated coal ash, blast furnace slag or ...

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AN INVESTIGATION INTO THE USE OF SLATE WASTE AGGREGATE .

alternative aggregate in concrete and discuses the main constraints that hinder its uses in concrete such as, flaky particle shape, risk of alkali-silica reaction and the presence of pyrites. Recommendations to improve its efficiency are presented. Also the importance of further research into the effect of slate waste aggregates inclusion on concrete failure mechanism are suggested for future ...

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Concrete production // granova® incinerator .

Is it possible to use incinerator bottom ash (IBA) as concrete aggregate? There are a number of European standards that define the framework for using secondary building materials in concrete or concrete products as a partial substitute for natural aggregates. The first country to have actually regulated the use of IBA in a corresponding national technical regulation is the Netherlands ...

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Recycled Concrete Aggregate - an overview | .

Recycled concrete aggregates (RCAs) are expected to result in an increase in the water absorption of concrete, ... RCA is not a cement substitute. Conventional concrete aggregate consists of sand (fine aggregate) and various sizes and shapes of gravel or stones. The coarse aggregate portion of RCA has no significant adverse effects on desirable mixture proportions or workability. Recycled ...

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Sustainable Management of Waste Coconut Shells as ...

fiber as substitute for aggregates in developing concrete hollow blocks. This paper presents the result on the workability and compressive strength of concrete containing various percentage of coconut shell content as partial aggregate replacement. Workability test and compressive strength test were conducted in accordance to ASTM C136 and ASTM C137 respectively. Results show that replacement ...

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Research Article A Study of Concrete Made with Fine and ...

aggregates from fresh concrete waste is higher than the naturel aggregates. e measured coe cient of absorption is .% and % for coarse and ne aggregates, respectively. (ii) e use of fresh concrete waste, a er crushing, as recycled ne and coarse aggregates decreases the mechanical performance of the new concrete. (iii) e compressive strength decreases gradually with respect to the increase of ...

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Crushed aggregates as substitute to sand in .

Substitute For Sand Crushed Sand In Portugal. Substitute for sand crushed sand in portugal substitute for sand crushed sand in portugal sand gravel from als trucking building supplies inc als trucking building supplies has been working with local contractor to supply sand gravel 21aa crushed concrete we sell this as a substitute forlimestone sand aggregates bear industries inc port other ...

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EP2595937A1 - Concrete substitute - Google .

A concrete substitute material (30) which is environmentally friendly in its manufacture and use. The material (30) comprises a mix of petrochemical based polyols (11), renewable polyols (12), isocyanate (20) and filler material (21). Products (34) formed by curing of the material (30) can be recycled, and are lightweight, strong and durable.

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USE OF WASTE PLASTIC AS FINE AGGREGATE SUBSTITUTE IN CONCRETE

used as the replacement of fine aggregate in the concrete. Concrete cube and beam were casted taking 10% to 25% of plastic as partial replacement of fine aggregate and tested for 28 days of compressive strength and flexural strength of concrete. 1. INTRODUCTION . The research in to new and innovative waste materials being under taken world-wide and innovative ideas that are expressed are ...

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Concrete: Cement Substitutes - GGBS, PFA and .

Concrete: Cement Substitutes. GGBS Producing cement uses a great deal of energy, so finding a waste product that can substitute for cement makes good environmental sense. To varying degrees, cement substitutes work in two ways: • First, they hydrate and cure like portland cement. • Second they are "pozzolans," providing silica that reacts with hydrated lime, an unwanted by-product of ...

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Waste Glass as Coarse Aggregate for Concrete

The paper reports on the performance of 34 different concrete mixes containing glass crushed to ¾-in. (19-mm) maximum size as coarse aggregate and six reference mixes made with gravel of the same size. Two cements of alkali equivalent 0.58 and 1.13, classifiable as low and high alkali (ASTM C 150-72), in amounts ranging from 400–900 lb/yd ...

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Recycled Concrete Aggregate - an overview | .

Recycled concrete aggregates (RCAs) are expected to result in an increase in the water absorption of concrete, ... RCA is not a cement substitute. Conventional concrete aggregate consists of sand (fine aggregate) and various sizes and shapes of gravel or stones. The coarse aggregate portion of RCA has no significant adverse effects on desirable mixture proportions or workability. Recycled ...

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Concrete: Cement Substitutes - GGBS, PFA and .

Concrete: Cement Substitutes. GGBS Producing cement uses a great deal of energy, so finding a waste product that can substitute for cement makes good environmental sense. To varying degrees, cement substitutes work in two ways: • First, they hydrate and cure like portland cement. • Second they are "pozzolans," providing silica that reacts with hydrated lime, an unwanted by-product of ...

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Compressive Strength of Concrete with Laterite Aggregate ...

reaching the age of 28 days, concrete with a coarse aggregate substitute variation indicates the development of compressive strength looks slower when compared to normal concrete, however with increasing age the hydration difference in the development of compressive strength increases. Increasing the compressive strength of concrete is higher at the age of initial hydration, up to 14 days, and ...

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Waste Glass as Coarse Aggregate for Concrete

The paper reports on the performance of 34 different concrete mixes containing glass crushed to ¾-in. (19-mm) maximum size as coarse aggregate and six reference mixes made with gravel of the same size. Two cements of alkali equivalent 0.58 and 1.13, classifiable as low and high alkali (ASTM C 150-72), in amounts ranging from 400–900 lb/yd ...

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What is Fine Aggregate? FA Types used in .

The aggregates passing 4.75 mm tyler sieve and retained on .075 mm sieve are classified as Fine Aggregate. Types of Fine Aggregate. Usually, sand, crushed stone, and crushed bricks are used as fine aggregate in concrete or pavement construction. Sand. Sand is an important engineering material. In concrete works, sand is used as a fine aggregate ...

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