DOI: 10.1016/J.CONBUILDMAT.2014.04.055 Corpus ID: 137617009; Direct tensile strength of lightweight concrete with different specimen depths and aggregate sizes @article{Choi2014DirectTS, title={Direct tensile strength of lightweight concrete with different specimen depths and aggregate sizes}, author={Se-Jin Choi and Keun …
In each of the all-lightweight concrete and sand-lightweight concrete groups, the maximum aggregate size varied between 4 and 19 mm; the beam depth ranged from 150 to 600 mm in each ready-mixed concrete batch with the same mix proportions.
The porous nature of lightweight expanded clay aggregate (LECA) is decisive in the physical and mechanical properties of concrete. A comprehensive experimental study consisting of 13 different mixtures and 234 specimens was carried out on density, absorption capacity, porosity, compressive strength, splitting tensile strength, …
Current design methods for structural lightweight aggregate concrete (SLWAC) are usually only valid for a limited range of concrete compositions that have previously been subjected to trial tests. ... The suggested volumes of paste are valid for maximum aggregate sizes, D max, of <12.5 mm. The first mixture can be taken to 0.3 …
Lightweight aggregate concrete (LWAC) exhibits the advantages of thermal insulation, reduces energy consumption building costs, improves building efficiency and easy construction. ... They have a hard, coarse red shell and fine pore structures, which are commercially available in a size range of 7 to 30 mm. Similarly, ed blast-furnace …
Describes the use of lightweight concrete, a combination of pumice, scoria, or other lightweight aggregate with portland cement, to creating ... resembling tiny pearls and when it is heated it expands and breaks into small expanded particles the size of sand. Concrete made with expanded perlite weighs between 50 to 80 pounds per cubic foot …
This report validates different types of normal aggregates of five regions of Mexico (Mexico City, Tijuana, Guadalajara, Monterrey …
Size effect for example in concrete is addressed by some authors by scaling the maximum aggregate size [56, 57]. Sutherland et al. [58,59] studied the effect of size and scale in FRP laminates ...
Learn about the definition, properties, history, and applications of structural lightweight aggregate concrete, which is made with lightweight aggregates as defined in ASTM …
Concrete 3D is a sustainable solution for manufacturing efficient designs and creating less waste, and selecting the optimal materials to use can amplify the advantages of this technology. In this study, we explore lightweight concrete by replacing normal weight aggregate with lightweight aggregates such as cenospheres, …
recent years using waste materials to produce lightweight concrete. [1, 18, 12, 2, 15, 21] have carried out exploratory studies on the use of palm kernel shells as lightweight aggregate to produce lightweight aggregate concrete. [23] has also investigated the use of volcanic slag as coarse aggregate in the production of semi-lightweight ...
Lightweight Aggregate Concrete: Utilizes porous lightweight aggregates with a low apparent specific gravity, typically lower than 2.6. Aerated Concrete : Incorporates large voids …
In this study, lightweight pervious concrete production involving recycled coarse aggregates (RCAs) with potential to cause environmental pollution was investigated. First, RCAs were produced from concretes possessing low compressive strength and were classified. ... Hu M (2019) Influence of aggregate size on …
However, in the case of lightweight concrete with densities lower than 1200 kg/m 3, the water absorptions were more than 20% for aerated concrete [5] and more than 30% for porous lightweight aggregate concrete [28]. Therefore, these concretes may not be suitable for applications where durability or high resistance to water penetration is …
Karamloo et al. (2016a) studied the impact of maximum lightweight aggregate size on the fresh and mechanical properties of lightweight self-compacting …
The paper presents the results of research in lightweight concrete with open structure made using a lightweight porous -glass aggregate produced from recycled glass powder. The goal was to ...
The slump decreased by 9%, 17% and 27% with including 50%, 75% and pumice coarse aggregate. Concrete mixture containing pumice (size 0.15–4.75 mm) as fine aggregate and normal weight coarse aggregate exhibited 17% reduction in the slump compared to the reference. Concrete mixtures containing pumice fine aggregate …
Nominal sizes of 4.75 and 12 mm lightweight expanded shale were used as fine and coarse aggregates, respectively. Expanded shale produced by TXI aggregate company, Colorado, USA, was used. In manufacturing process, natural shale is expanded in an oil fired rotary kiln maintained between 1,900 and 1,200 °C. ... Influence of elevated ...
Lightweight Aggregate Concrete. In the early 1950s, the use of lightweight concrete blocks was accepted in the UK for load bearing inner leaf of cavity walls. Soon thereafter the development and production of new types of artificial LWA (Lightweight aggregate) made it possible to introduce LWC of high strength, suitable for structural work ...
🕑 Reading time: 1 minute Ultra-lightweight concrete, which is also known as super lightweight concrete or infra-lightweight concrete, is a state-of-the-art concrete in terms of density and insulation properties and classifies as concrete with a dry density lesser than 800 Kg/m 3.This density is the minimum limit for lightweight concrete according to the …
Lightweight aggregate concrete with open structure (LAC) differs significantly from the aforementioned lightweight concrete (LC). Its properties are defined in EN 1520 …
Introduction to Lytag® lightweight aggregate concrete - LWAC EPIC C311:X223 Uniclass L331:P224 CI/SfB (-A) Eq7. Page 2 of 7 Lytag Ltd 2nd Floor, 75-77 Margaret Street, London W1W 8SY ... beam and slab sizes can be reduced thus saving in overall concrete volume and giving wider opportunities in design.
Lightweight aggregate concrete (LWC) and fiber reinforced polymer (FRP) reinforcement are potentially more sustainable alternatives to traditional steel-reinforced concrete structures, offering several important benefits. To further the knowledge in this area, the physical–mechanical properties of LWC produced with 0%, …
Lightweight aggregate concretes are broadly divided by ASTM into three groups based upon their use and physical properties, structural, structural/insulating and insulating …
5.2.4 Popouts—Concrete specimens prepared as described in the method for preparation of sample for shrinkage of TABLE 1 Grading Requirements for Lightweight Aggregates for Structural Concrete Size Designation Percentages (Mass) Passing Sieves Having Square Openings 25.0 mm (1 in.) 19.0 mm (3⁄4) in.) 12.5 mm (1⁄2 in.) 9.5 mm (3⁄8 in.) 4. ...
Learn about the characteristics, advantages and applications of lightweight aggregate concrete, which has a density of less than 2200 kg/m3. …
AbstractTo evaluate the effects of beam specimen depth and aggregate size on the fracture energy of lightweight concrete (LWC), different beam specimens designated into 32 notations were tested under three-point bending. In each of the all-lightweight concrete and sand-lightweight concrete groups, the maximum aggregate …
Although the compressive strength of lightweight concrete with LECA at densities of 1400 and 1600 kg/m 3 is higher than ed concrete, but due to the presence of fibers in ed concrete, the flexural strength of light concrete at these densities is higher than that of lightweight concrete with LECA. But workability of ed concrete …
This guide summarizes the properties, production, and design of lightweight concrete with low density aggregates. It provides data on the density of lightweight concrete and its …
Laterlite Expanded Clay lightweight aggregate is manufactured and tested for use concrete batching in accordance with international reference standards and is therefore CE-marked to denote conformity to EN …
In this study, ultra-light weight concrete (ULWC) with heat-insulating properties is produced by using different size expanded perlite aggregates and various admixtures. The compressive strength, 4 point bending strength, freezing and thawing resistance, water absorption, dry unit weight, ultra sound velocities and thermal …