89 construction materials (clay, bricks, a aggregate) or construction works (foundation fill, dikes 90 etc.). Much as the sea sand used in concrete is controversial, it is still an effective measure 91 to relieve the shortage of sand [5]. Studies show that (DMS) can be successfully used as a 92 fine aggregate for concrete production [2, 6]. 93

Jul 30, 2018· Chandrakeerthy SR de S. Suitability of sea sand as a ne aggregate for concrete production. Transactions, Institution of Engineers, Sri Lanka, 1994, p. 93114. Marine aggregates in concrete, Digest 473. Building Research Establishment, Watford, UK, 2002. Gutt W, Collins RJ. Sea dredged aggregates in concrete, Information Paper.

Concrete is the most widely used construction material thereby required a lot of raw resources to keep up with its demand. This leads to depletion of raw resources as well as a continuous build-up of demolished concrete wastes (DCW). In most developing nations like Nigeria, the usual way of disposing these DCW is landfilling. However, recycling has become a viable options for …

Apart from the use of PKS in the production of fibre-roofing materials, as an aggregate in plain lightweight concrete, it use in the production of concrete and road building material have no t been well research [4]- [5]- . PKS is light in weight and therefore, ideal for substitution as coarse aggregate in the production of lightweight concrete.

Jun 04, 2013· Concrete is one of the versatile and widely used building material in the world construction industry. Fine and coarse aggregates make about 70% by volume of concrete production. It goes without saying that the quality of concrete is thus strongly influenced by aggregate's physical and mechanical properties as well as chemical composition of the parent …

the concrete was assessed using the uniaxial compressive strength test to establish the suitability of recycle iron and steel slag aggregate as alternative aggregate in concrete production. Concrete of M20 grade was considered for a water cement ratio of 0.60 using 1:2:4 mix ratio, slag aggregate replacements were observed from 0 to

Answer (1 of 4): 1) EPS: Expanded Polystyrene plays a very unique role in concrete. Research has shown that concrete with this material behaves very similarly to light weight concretes containing traditional aggregates. This is …

Answer (1 of 4): 1) EPS: Expanded Polystyrene plays a very unique role in concrete. Research has shown that concrete with this material behaves very similarly to light weight concretes containing traditional aggregates. This is believed to be the case because the styro fills in the gaps that ...

Jun 26, 2019· The search for new material sources that meet the assumptions of sustainable development is constant, especially in the civil construction industry. Therefore, the objective of the present research was to develop and characterize physically and mechanically lightweight bio-concretes produced with an alternative lignocellulosic source. Cereus jamacaru (Cactus) …

alternative aggregate for structural concrete. Recycled con-crete aggregate (RCA) is generally produced by the crushing of concrete rubble, screening then removal of contaminants such as reinforcement, paper, wood, plastics and gypsum. Concrete made with such recycled concrete aggregate is called recycled aggregate concrete (RAC).

Very occasionally, it can be found up to a ratio of 90% GGBS and 10% Pc. Concrete made with GGBS cement sets more slowly than concrete made with ordinary Portland cement, depending on the amount of GGBS in the cement mix, but also continues to gain strength over a longer period leading to improved overall durability and life expectancy.

Sieve sizes commonly used for concrete aggregates are detailed in Table 1, and various physical properties of normalweight aggregates, with typical range values, are shown in Table 2. Coarse and fine aggregates are generally sieved separately. That portion of an aggregate passing the 4.75 mm (No. 4)

Egg Shell As A Fine Aggregate In Concrete For Sustainable Construction S.A. Raji, A. T. ABSTRACT: This work has investigated the potential use of usedegg shell as a concrete material. The usedegg shells were used as fine concrete aggregate. In the laboratory test, conventional fine aggregate was replaced at replacement level.

in the production of concrete and cement-sand mortar • The Construction Industry Council has launched a research project entitled "Research on River Sand Substitutes for Concrete Production and Cement Sand Mortar Production". • To identify alternative materials to supplement river sand, the research will go through two phases

conventional natural aggregate concrete. Hardened concrete consist of more than 70% aggregate due to the high demand in building construction and the increase of the amount of disposed waste material, suppliers and researchers are exploring the use of alternative materials which could preserve natural sources and save the environment.

The concrete industry is a core element of the building sector, but it has to deal with the increasing attention on the environmental issues related to the production process: increasing energy efficiency and the adoption of alternative fuels or raw materials represent the most relevant solutions. The present work analyses physical, mechanical, and environmental …

Sep 30, 2018· In developing countries, construction and demolition waste (CDW) is disposed to landfill, causing social, environmental, and economic crises. In these nations, CDW exponentially increase due to their rapid economic growth, industrialization, and urbanization. This paper aims to examine the possibility of recycling concrete waste for production of new concrete in …

for production process (e.g. grinding): Similar for Lime & CementSimilar for Lime & Cement CO. 2 . is also produced during chemical process of CaCO. 3 . to CaO but same amount of CO amount of CO. 2. will be taken up again will be taken up again during hydration and carbonation process (very long process) Hong Kong Concrete Institute

Jul 19, 2018· Concrete production uses a ton of sand and emits a lot of carbon. Here are some greener alternatives. A concrete mixing truck at a construction site in South Africa. Demand for concrete spurred by ...

alternative aggregates such as river stones. There has been an increasing interest, especially in the developing countries, in the use of these locally sourced coarse aggregate materials in concrete production. This is partly as a result of the unchecked depletion of …

Concrete without Cement – A Green Alternative Fly Ash. Concrete without cement is possible with the use of fly ash as an alternate for cement. It matches both the chemical and physical properties of cement. Thus it has the ability to replace cement completely. The word "concrete" defines as the bonding between aggregates, cement and water.

EFFECT OF CRUSHED CONCRETE AS COARSE AGGREGATES IN PRODUCTION OF CONCRETE. In the face of a possible scarcity of natural aggregates in the future in line with sustainable construction, this research investigates the feasibility of the use of recycled coarse aggregates as an alternative to natural coarse aggregates in structural concrete.

May 24, 2016· 5% and 3%, respectively. The rubber ized concrete had a density reduction o f 1%, 3% and 6%, for a. replacement by volume of 5%, 10% and 20%, respectively. Compressive s trength. Concrete produced ...

Aggregates, both fine and coarse, take about 65-75% by volume of concrete and are important ingredients in concrete production. The parent materials of aggregates are derived mainly from volcanic activity. The dominant rock for coarse aggregate production in Ethiopia is generally basalt while ignimbrite is most commonly

Nov 08, 2019· Introduction. The requirement of concrete aggregate in India is large. Corresponding to the current annual production of cement of 300 million tons, total requirement of coarse and fine aggregate for use in cement concrete, mortar and plasters of about 1500 metric tons per year is a safe estimate.

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 08 | Aug 2019 p-ISSN: 2395-0072 Concrete with Alternative Aggregates - Green Concrete Manoj Katiyar1, Surendra Pal Singh2(Asst.Prof.) 1,2Department of Civil Engineering, RCE Roorkee UK India -----***----- Abstract - Concrete is the most largely …

the planet. Production of concrete is increasing due to high growth of infrastructure development and construction activi-ties in the world [2]. However, there are some negative im-pacts of more production of concrete like continuous extensive extraction of aggregate from natural resources will lead to its depletion and ecological imbalance [3].

Aggregates are inert granular materials such as sand, gravel, or crushed stone that, along with water and Portland cement, form the necessary ingredients in concrete. Aggregates need to be clean, hard, strong particles free of absorbed chemicals or coatings of fine materials that could cause the deterioration of concrete.

Netherlands). The overall quality of recycled concrete aggregates is generally lower than that of natural aggregate, due to the mortar that remains attached to the natural aggregates s [1]. Studies on the use of recycled concrete aggregates in concrete show that the compressive strength [1], drying shrinkage, creep [2], shear resistance [2 ...

production of pervious concrete, high porosity is the main desired quality. [6-9, 11] Also previous research papers show that the use of steel slag as aggregate for the production of non-reinforced concrete increases the compressive strength [10, 11]. MATERIALS AND METHODS