mix design of recycled aggregate concrete ppt
re, even though through a careful mix design and application of appropriate production technology these effects can be reduced to an acceptable level, in practical application, a fine fraction of recycled . ... Mirjana Malešev, et al., Properties of recycled aggregate concrete
glass and recycled concrete are also given for completeness. Based on the results of thi s study, it is recommended that street sweepings shall not be used with any type of concrete mixture due to its variability. Crushed glass and recycled aggregate concrete shall be used with optimized cementitious mixtures and not standard class A concrete .
INTRODUCTION. Reclaimed concrete material (RCM) can be used as coarse and/or fine aggregate in Portland cement concrete (PCC) pavements. However, concrete incorporating more than about 10 to 20 percent fine RCM aggregates can suffer a reduction in quality because of the high amount of water required to maintain adequate workability of the concrete mix.
Use of Recycled Concrete Aggregate in PCCP: Literature Search. ... The use of recycled concrete aggregate (RCA) is recommended based on a review of literature that ... or will not show up because of our existing mix design and construction practices. June 2009 7 .
RECYCLED AGGREGATE CONCRETE IN RIGID PAVEMENTS PROJECT BY : HITESH BHOI KAILASH KUMAR GUPTA MD JUNAID NOSHIN PRAVEEN GUIDE: SHARMA H.D. ASHWINI CONTENT • INTRODUCTION • BACKGROUND • OBJECTIVES • ADVANTAGES • DISADVANTAGES • LITERATURE REVIEW • METHODOLOGY • DESIGN AND ANALYSIS • TESTING • CONCLUSION …
replaced by recycled concrete aggregate. 26 Merits of Recycled aggregates: The unique properties of recycled aggregates provides, Superior compaction and constructability. Lighter weight per unit volume. Reduces environmental impacts. Reduces the amount of waste used for land filling. Saves Energy. Reduction in material cost, transportation ...
Oct 15, 2017· Recycled aggregate concrete: Particle Packing Method (PPM) of mix design approach ... But, the use of RA has not gained popularity yet, because of the inferior quality of RA and yielded recycled aggregate concrete (RAC) using RA. The proposed Particle Packing Method (PPM) of design mix is executed along with the established Two Stage Mixing ...
Mix Design for Pervious Recycled Aggregate Concrete ... could be used in the mix design of pervious concrete with either natural or recycled concrete aggregates to meet the specification ...
In the process of mix design of pervious concrete with either natural aggregate or recycled concrete aggregate, Fig. 11 could be used to obtain the void content needed for Open Access trial mixes to satisfy the speciﬁcation requirement for water permeability and compressive strength of concrete.
TCG-JSCE JOINT SEMINAR Nov. 20, Athens. 2 Concrete ... – Recycled concrete using recycled aggregate Class L. 34 not more than 13.0 not more than 7.0 not more than 7.0 not more than 5.0 not more than 3.5 not more than 3.0 Water Absorp-tion (%) － ...
Sep 30, 2016· A novel mix design methodology for Recycled Aggregate Concrete. ... This paper proposes a conceptual formulation for predicting and controlling the compressive strength of Recycled Aggregate Concrete (RAC) mixtures, by explicitly taking into account the specific features of Recycled Concrete Aggregates (RCAs). ... N.K. Bairagi, H.S. Vidyadhara ...
Design of Normal Strength Concrete Mixtures with Recycled Concrete Aggregates A.M. Knaack1 and Y.C. Kurama2 1Univ. of Notre Dame, Department of Civil Engineering and Geological Sciences, 156 Fitzpatrick Hall of Engineering, Notre Dame, IN, 46556; email: [email protected]
Aug 26, 2014· At fresh state, the mix design of concrete with recycled aggregates requires an additional quantity of water to obtain a similar workability as a concrete formulated with natural aggregates (Hansen and Boegh 1986). Such a modification may obviously affect the mechanical characteristics of recycled aggregates concrete.
The paste, comprised of cement and water, binds the aggregates (usually sand and gravel or crushed stone) into a rocklike mass as the paste hardens. A properly proportioned concrete mix possesses acceptable workability of the freshly mixed concrete and durability, strength, and uniform appearance of the hardened concrete while being economical.
Patented Concrete Mix Design ... Use of Recycled Tire Rubbers in Concrete. Biel T.D. and Lee H. Infrastructure: New Materials and Methods of Repair. Proceedings of the Third Materials Engineering Conference, San Diego, 1994, 351-358. Title: Microsoft PowerPoint - Crumb Rubber Concrete.ppt
Recycled concrete will have a higher absorption and lower specific gravity than conventional aggregates. To produce good quality, durable concrete containing a portion of recycled concrete aggregate often requires trial concrete mixes and close monitoring of the properties of the old recycled concrete, with mix adjustments made, as needed.
A Step-by-Step detailed concrete Mix design Procedure to calculate cement, sand, aggregate, water & admixture content in to prepare M30 Grade concrete. ... you will have the deviations in case the aggregate are replaced with recycled aggregate ,then make necessary tweaks in concrete mix designs with recycled aggregate to get the required results.
5.3 MIX DESIGN METHODS 5.3.1 CONCRETE MIX DESIGN 1. Scope. This method covers the procedure for designing concrete mixes and is based on the absolute volumes of the various components of the mix, i.e.: the absolute volumes of cement (plain, blended or fly ash modified), aggregate, water and air in one cubic yard of concrete. 2. Procedure. 2.1.
An example of proportioning a mix design through use of this form is detailed in Table 3.1. The contractor establishes the initial parameters for a mix design and serves as the starting point for subsequent proportioning calculations. The initial step in proportioning the mix design is to calculate the water content per cubic yard of concrete.
These differences become greater with increasing amounts of recycled fine aggregates. Too many recycled fines also can produce a harsh and unworkable mix. Many transportation departments have found that using coarse recycled aggregate but only about 10% to 20% recycled fines works well. The remaining percentage of fines is natural sand.
Jun 30, 2011· For the purpose of this article the term crushed concrete aggregate (CCA) is defined as returned concrete and recycled concrete aggregate clean enough to be used as aggregate for new concrete. Recycled concrete aggregate (RCA) refers to crushed concrete and other materials suitable for use as fill and compactible fill.
This paper is devoted to the studies of material and mechanical properties of recycled aggregate concrete using packing density method. This paper considers mix of two different aggregate sizes of 10 and 20mm, 0, 30, 50, 70 and recycled aggregate replacement ratios, and water-cement ratio of 0.35, 0.45 and 0.55.
Mix design procedure for recycled aggregate concrete . Conservation of natural resources and preservation of environment is the essence of any development. Use of recycled aggregate concrete (RAC) is one such attempt and is an answer to some of the …
aggregate), and old hardened concrete can be recycled and used as aggregate in new concrete or as fill and pavement base material. 2. Economic factors. Recycling concrete is an attractive option for governmental agencies and contractors alike. Most municipalities impose tight environmental controls over opening of new aggregate sources.
Recycled aggregate concrete: Particle Packing Method … Request PDF on ResearchGate | Recycled aggregate concrete: Particle Packing Method (PPM) of mix design approach | A sustainable and eco-friendly approach is essential for the construction industry, as it is one of the major sectors responsible for the depletion of the natural resources and the generation of greenhouse gases.
ACI Method of Mix Design. Start. If slump is not given, decide the slump: Use Table 3.1. 1 of 18 Table 3.1 Recommended Slumps For Various Types of Construction. Slump (in) Types of Construction Reinforced Footings Plain Footings Beams Building Columns Pavement and Slab Mass Concrete. Max 3 3 4 4 3 2. Min 1 1 1 1 1 1. 2 of 18
Nov 15, 2014· It is called recycled aggregate which can be produced by concrete crusher. The aggregates are categorized by size as coarse and fine aggregate. The characteristic of recycled aggregates could be different by its parent concrete because the parent concrete was designed for its purposes such as permeable, durable and high strength concrete
The fracture properties of four types of concrete prepared using natural coarse aggregate and recycled coarse aggregate and conventional and particle packing method (PPM) of mix design approaches ...
May 11, 2013· Concrete is a construction material composed of :Cement (commonly Portland cement) as well as other cementitious materials such as fly ash and slag cement.Aggregate (generally a coarse aggregate such as gravel, limestone, or granite, plus a fine aggregate such as sand).
Pervious concrete is a tailored-property concrete with high water permeability which allow the passage of water to flow through easily through the existing interconnected large pore structure. This paper reports the results of an experimental investigation into the development of pervious concrete with reduced cement content and recycled concrete aggregate for sustainable permeable pavement ...
mix design of recycled aggregate concrete ppt ; mix design of recycled aggregate concrete ppt . ZENIT has developed the industrial milling machines which cover fully production of the crude powder, fine powder and ultrafine powder. Decades of experience makes ZENIT learn better the customer's investment ideas and considerations so as to provide ...
Oct 13, 2015· Mix design-ppt 1. BUILDING TECHNOLOGY AND MANAGEMENT CONCRETE MIX DESIGN 2. INTRODUCTION Concrete is obtained by mixing cement, fine aggregate, coarse aggregate, water and admixtures in required proportions. The mixture when placed in forms and allowed to cure becomes hard like stone.
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