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 is divided in a class for bound and a class for unbound use Crushin g age Bulk specific gravity Bulk density Absorp tion (%) Crushin g …
The effects of limestone aggregate on concrete properties
It is reported that fine aggregate of limestone can reduce the drying shrinkage in concrete [5]. Mix proportions of fine aggregate were varied as listed in Table 4. Except the ratios of fine limestone and mountain sand, the amount of other materials of cement and coarse aggregate kept constant. Table 5 shows all mixture proportions of concrete ...
REPLACEMENT OF FINE AGGREGATE WITH SAWDUST
Table 5 shows the slump test values for fresh concrete. It was clear that there were significant losses of slump values as sawdust waste or wood waste aggregate increased compared with the control ...
(PDF) Using Waste Glass to Replace Fine …
The environmental and economic concern is the biggest challenge concrete industry is facing. In this paper, the issues of environmental and economic concern are addressed by the use of waste glass as partial replacement of …
Quarry Dust as a Partial Replacement of Coarse …
quarry process, has very recently gained good attention to be used as an effective filler material instead of fine aggregate. Neville (2002), Zain et al. (2000), and Gambhir (1995) also demonstrated in their studies how quarry dust can be suitably used as concrete aggregates, especially as fine aggregates. Nwachukwu et al (2012)
The Durability of Recycled Fine Aggregate …
With the rapid development of urbanization, many new buildings are erected, and old ones are demolished and/or recycled. Thus, the reuse of building materials and improvements in reuse efficiency have become hot …
Use of crumb rubber as replacement over aggregate in concrete
One of the most investigated waste materials in concrete is scrap tires, which have well explored to replace fine aggregates partially (AbdelAleem and Hassan 2018; Ismail and Hassan 2016;Khan et ...
What are the Properties of Aggregates for Concrete?
In concrete, fine aggregates and coarse aggregates make up about 75% of the total concrete materials. It is, therefore, significantly important to acquire the right type and quality of aggregates at the site. The aggregates from the main matrix of the concrete/mortar. ... Instead of waiting for 2hrs to 3hrs for silt to settle, it is recommended ...
(PDF) The Suitability of Using Laterite as Sole Fine Aggregate …
Ettuet al. [17], after conducting compressive strength tests on a total of 120 standard 150 mm concrete cubes, concluded that laterite could be used as the sole fine aggregate in structural ...
AN EXPERIMENTAL INVESTIGATION ON THE USE OF …
Coarse aggregates are particulates that are greater than 4.75mm. The usual range employed is between 9.5mm and 37.5mm in diameter. - Fine aggregates are usually sand or crushed stone that are less than 9.55mm in diameter. Typically, the most common size of aggregate used in construction is 20mm. Coarse aggregates Fine Aggregate
Sustainable Approach for Linz‐Donawitz Slag
Use of LD slag as a cementitious component instead of aggregate in concrete would boost its reuse and will reduce the cost of construction and production of greenhouse …
Uses of Bottom ash in the Replacement of fine …
Fine Aggregate (Sand): The Fine aggregate use for casting in clean river sand from Ganga river Varanasi and it was clean and dry. It is of size pass through 1.20 mm sieve. Sand conforming to Zone-III was used as the fine aggregate, as per I.S 383-1970. The properties of the fine aggregates are given in following Table No.2.
Role of Aggregate in Concrete Countertop Mix Designs
Concrete made with just fine aggregate (or sand) is known as mortar concrete. Like the mortar used for brick and concrete block construction, which is simply made with mortar cement and sand, mortar concrete has no coarse aggregate in it, so a ground finish will have a fine-grained appearance. Mortar concrete is commonly used in precast ...
Alternative fine aggregates in production of sustainable concrete …
This approach led the researcher to utilize C&D waste as aggregate replacement in concrete production, but a large no of studies uses C&D waste as coarse aggregate replacement in concrete, whereas ...
Replacement of Fine Aggregates by Recycled Construction …
Reinstating of fine aggregates in a concrete is studied with five incremental ratios such as 20, 40, 60, 80, and . Since debris are coated with fine cementitious particles, the …
(PDF) THE NEED FOR STANDARDIZATION OF AGGREGATES FOR CONCRETE
Concrete is one of the versatile and widely used buiding material in the world construction industry. Fine and coarse aggregates make about 70% by volume of concrete production.
(PDF) The Production of Sustainable Concrete …
Fine aggregates showed the highest number of alternatives and replacement level, with the relevant impact on concrete properties; coarse aggregates, however, always reach a complete replacement ...
ReviewAlternative fine aggregates in production of sustainable concrete- A review
In this paper, detailed investigation is carried on concrete by replacing natural sand by stone dust and bottom ash and study the behavior and strength characteristic. Stone dust and bottom ash …
(PDF) The Production of Sustainable Concrete with …
Fine aggregates showed the highest number of alternatives and replacement level, with the relevant impact on concrete properties; coarse aggregates, however, always reach a complete...
PROPERTIES OF CONCRETE USING CRUSHED …
The investigation reported in this paper is carried out to study the feasibility of using crushed brick to substitute the coarse aggregate in concrete, replacing stone aggregate (partly) by ...
Aggregates in Concrete: Types, Functions, and Importance
What are Fine Aggregates? Fine aggregates are smaller particles. They have a diameter of less than 4.75 millimeters(the size range is typically 0.075 mm to 4.75 mm). For example: sand. They are typically made of crushed stone, natural sand, or manufactured sand. It is utilized to fill the voids in between coarse aggregate. Fine aggregates ...
Towards Sustainable Masonry Construction Through Natural …
The types and amounts of binding materials usually determine the application of mortars in masonry construction, although aggregates are equally significant, since they …
Sustainable use of industrial-waste as partial replacement of fine
Concrete the most broadly used construction material (Prabhu et al., 2014), aggregate makes 70% of its volume is the principal component material in concrete production and consumes globally 8–12 million tons of natural aggregate annually (Devi and Gnanavel, 2014, Al-Jabri et al., 2009).The aggregate classifications used are course aggregate with 4.75 mm …
An experimental analysis on the replacement of fine …
The experiments showed that replacing 30% artificial fine aggregate for natural fine aggregate produced the maximum strength and lowest crack area. Studies led to these …
A comparative study on the various alternative materials for …
Numerous researchers are finding different materials to replace fine aggregate such as Cenosphere, Vermiculite, Ceramic Waste, Egg Shell, Walnut Shell, etc which is made up of …
Partial replacement of sand with marble waste and scoria for …
A total of 10 series of concrete mix (Table 1) presents the reference concrete proportion) prepared for a constant water-cement ratio of 0.49 and slump range between 75 and 100 mm (Recommended and used by, for scoria since, it has greater absorption capacity than other fine aggregates due to its porosity and also used by, for marble waste).
Utilisation of Waste Marble Dust as Fine Aggregate in Concrete
The aim of this research is to assess the durability performance of concrete containing various percentages of fine aggregates produced from the waste generated by the marble quarrying industry (0 ...
A Comparative Study on Conventional and Geopolymer …
Aggregates: Coarse aggregate (size<20 mm) were used. The specific gravity and fineness modules were 2.67 and 6.68 respectively. Fine aggregate: M sand passing through 4.75 mm sieve was used. The specific gravity and fineness modules were 2.3 and 3.8 respectively. Hemp aggregate: Hemp passing through 4.75 mm sieve was used. The specific gravity ...
Experimental study of geopolymer concrete with recycled fine aggregates …
In this study, alternative aggregates and chemical activators such as Tandur stone slurry powder and quarry dust waste were employed as fillers for concrete production instead of cement and fine aggregates. As a result, the strength and efficiency of Geopolymer Concrete were increased, while energy demand and fuel consumption were lowered.
Sand Equivalent Value of Soils and Fine Aggregate
asphalt concrete. • The presence of clay in fine aggregate can have detrimental effect on water sensitivity of asphalt concrete mix. • Clay like materials have the tendency to form layers around the aggregate such that the asphalt binder sticks to this layer instead of the aggregate.