Utilization of Basalt Saw Mud as a Spherical Porous …

2.2 Sample preparation Firstly, the natural aggregate was replaced with the FD aggregate at 0, 5vol%, 10vol%, 15vol%, 20vol%, 25vol%, and 30vol%, and the water-to-binder ratio (W/B) was 0.48. When SPFA is added, the river sand and coarse aggregate volumes are reduced by the same proportion at the same time. For example,

Utilization of Basalt Saw Mud as a Spherical Porous …

To promote the production and application of artificial aggregates, save natural sand resources and protect the ecological environment, we evaluated the feasibility of using spherical porous functional aggregates (SPFAs) formed by basalt saw mud under autoclave curing in ordinary structural concrete. In our work, two types of prewetted …

Preparation of coal gangue ceramsite high-strength concrete

Using coal gangue (CG) as a building material does not only reduce the disposal of industrial waste and promote the resource utilization of solid waste, but also solves the excessive consumption ...

Preparation of artificial aggregate using waste concrete …

To prepare concrete, the artificial aggregate was replaced by 10%, 30%, 50%, 70% and of natural aggregate. The apparent densities of natural and artificial aggregate are 2730 kg/ m 3 and 2600 kg/m 3. The water absorptions of that are 0.7% and 3.0%. There is a particular gap in the apparent density and water absorption of both …

Chapter 3

Responsibility for testing aggregate materials and providing aggregate properties. 39% 12% 4% 46% 10% 40% 20 6 2 24 5 21 0 10 20 30 40 50 0% 20% 40% 60% 80% Prior to use on every major construction …

Natural Aggregate

Natural aggregate consists of manufactured crushed stone and sand created by crushing bedrock, or naturally occurring unconsolidated sand and gravel.

A Comprehensive Review on the Performance of Structural …

Lightweight aggregate concrete is an innovative building material used to reduce the self-weight of a high-rise building. Recently, the use of lightweight aggregate in construction is increasing immensely due to its performance during an earthquake. Lightweight aggregate concrete (LWAC) is a solution for the achievement of …

Production and Processing of Aggregates | SpringerLink

The processing steps of natural coarse aggregate from naturally available rocks are explained. The source and processing procedure and number of steps …

Artificial lightweight aggregate made from alternative and

Lightweight aggregate (LWA) is defined as solid substance with an apparent density of less than 2.0 g/cm 3 and a bulk density of less than 1.2 g/cm 3 1.LWAs are porous and often granular materials ...

AN EXPERIMENTAL INVESTIGATION USING RECYCLED COARSE AGGREGATE …

This investigational study aims to examine the influence of using recycled coarse aggregate (RCA) instead of natural coarse aggregate (NCA) on the fresh properties (workability) and mechanical ...

Mechanical properties and abrasion behaviour of concrete containing

DOI: 10.1016/J.CONBUILDMAT.2013.11.049 Corpus ID: 136631995; Mechanical properties and abrasion behaviour of concrete containing shredded PET bottle waste as a partial substitution of natural aggregate

Characterization of pervious concrete with blended natural aggregate …

In this study, two types of coarse aggregate were blended to produce pervious concrete: natural aggregate and recycled coarse aggregate, as shown in Fig. 1. The raw recycled coarse aggregate (RCA) was collected from a demolition site in Pusat Bandar Damansara, Kuala Lumpur. The raw RCA was initially large in size and it was …

Performance of Clay Bed with Natural and Lightweight Aggregate …

PDF | On Jan 1, 2018, Trudeep N. Dave and others published Performance of Clay Bed with Natural and Lightweight Aggregate Stone Columns | Find, read and cite all the research you need on ResearchGate

Production and Processing of Aggregates

A combination of appropriate techniques is essential in the recycling process to extract good quality recycled aggregates with the expense of less energy. The various techniques for …

Mechanical properties and abrasion behaviour of concrete …

The purpose of this work is to evaluate the effects of size and shape of recycled polyethylene terephthalate (PET) aggregate on the fresh and hardened properties, including abrasion resistance, of concrete. 5%, 10% and 15% in volume of natural aggregate in the concrete mixes were replaced by an equal volume of three differently …

High-performance artificial aggregate prepared with …

Preparation of aggregate (1) Materials. ... The first type was natural curing, where the aggregate was taken out of the granulator and placed on a plate for 30 min. After the surface was no longer sticky, it was placed in a plastic sealing bag, and the sealing bag was placed at room temperature (20 ± 2 °C) until the detection age. ...

Natural Aggregates of the Conterminous United States

Graph of natural aggregate production for construction purposes, 1955-1980 20 10. Graph of the rate of preemption of potential sand and gravel areas, ... of the references used in the preparation of this report. Natural aggregate.—McLaughlin and others (1960, p. 16-4) defined natural aggregate as "materials composed ...

Preparation of phosphogypsum (PG) based artificial aggregate …

Artificial aggregate preparation. As shown in Fig. 2, three aggregates (N, C, and D) were prepared, ... Compared with the natural aggregate, the artificial one has a higher porosity and will absorb more free bitumen while preparing the asphalt mixture. This study used the liquid silicone resin to treat the artificial aggregates to decrease ...

Natural Fine Aggregate

In several studies, fine natural aggregate of cement mortar and concrete was replaced by coarse sized aggregate too [2,13]. Table 1 highlights the types and amounts of substitution of natural aggregate by plastic aggregate in the …

The influence of curing methods on the performance of …

The second method is the external addition of an alkaline activator, where only water is added during the aggregate preparation process without adding the alkaline activator. After the aggregates are formed in the pelletizer, they are placed in the tray for 30 minutes. ... with a lower probability of aggregate damage. Natural aggregate has a ...

Utilization of Completely Recycled Fine Aggregate for Preparation …

To reduce the cost of lightweight concrete (LWC) partition panels and to address recycling concrete waste, this work utilized completely recycled fine aggregate (CRFA) to replace the natural fine aggregate and ceramsite in the preparation of LWC and LWC partition panels. To this end, an autoclave-free curing process and an air …

What Are Aggregates and How Are They Used?

Aggregate materials are obtained from natural mines of sand or sand and gravel, quarries, deposits, and underground sediments. Examples of aggregate materials include: …

(PDF) Sustainable Use of Waste Material as Coarse Aggregate …

concrete, natural coarse aggregate as per IS 383:1970, natural sand from River are consider ed where the slump is reported within the range of 50-75mm for a r eplacement of iron slag

Preparation of artificial aggregate using waste concrete …

Preparation of articial aggregate using aste concrete powder and CO 2 xed by… 1455 1 3 for using waste concrete to alleviate the shortage of natural aggregate. Materials and methods Raw materials Waste concrete powder and particle WCP and WCAP were made by crushing concrete with a jaw crusher, grinding by a centrifugal mill, and sieving. The ...

Artificial Lightweight Aggregates Made from Pozzolanic …

1. Introduction. Aggregates are widely used in the field of construction, specifically in the manufacture of concrete. The increasing demand for concrete will result in an increase in the requirements of all concrete ingredients, including aggregates, which represent 60–70% of the total volume of the concrete [].Most of the aggregates used are …

Experimental investigation of concrete incorporating …

Waste reduction and decreasing the need for natural aggregate are significant environmental factors that should be taken into consideration. Both can be achieved by incorporating recycled concrete aggregate into fresh concrete mixes. Most previous studies on concrete incorporating recycled concrete aggregates mainly …

All About Coarse Aggregate: Types & Properties

Natural Aggregates . Natural aggregates are generally found in seashores, riverbanks, and pit mines. Natural aggregates can be used in construction work after performing some quality tests. The river sand and gravel are an example of naturally available aggregates. 2. Manufactured Aggregates

Aggregates

Properties study of artificial aggregate with high-content …

In cold regions, air-entraining agents can be added during the aggregate preparation process to reduce aggregate damage in freeze-thaw environments and improve the frost resistance of the concrete [65, 66]. Secondary pelletization can be explored when concrete is exposed to wet-dry cycles and ion erosion environments.