No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
Low density, fire resistance and good thermal insulation properties of lightweight aggregate concrete (LWAC) have drawn the attention of engineers and researchers for its widespread application. However, the LWAC still found limited application in the construction industry. For conventional application of LWAC, knowledge of different attributes of its behaviour is needed, …
Lightweight aggregates such as lightweight expanded clay aggregate (LECA), which can be classified as either natural or artificial, has been used to fully or partially replace conventional aggregates and has demonstrated numerous benefits by enhancing different concrete characteristics [12,13,14]. The usage of lightweight aggregate concrete ...
Ground quartz and SF have the highest silica oxide (SiO2) content, it was recorded as higher than 90%, producing more pozzolanic activity than other waste materials. …
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, modulus of elasticity, and …
Lightweight aggregate concrete is prepared by using lightweight aggregate or low density aggregate such as volcanic pumice, clay, slate, shale, scoria, tuff and pellite. Concrete is considered to be lightweight is the density is not more than 2200 kg/m 3, when compared to normal concrete which is 2300-2400 kg/m3 and a proportion of the ...
Lytag® lightweight aggregate is sold under a number of brands depending on the application. Aggregates are selected and graded to provide the optimum performance for each use. Lytag® lightweight aggregate Structural Lightweight Concrete – Lytag® lightweight aggregate has been used in lightweight concretes since the early 1960's.
This research aims to explore the compressive strength, response to elevated temperatures, and shear performance of lightweight concrete by substituting pozzolana aggregates (PA) with …
In general, using waste material as lightweight aggregate decreases the concrete's overall weight. The materials used as lightweight aggregate in concrete are discussed in this study. According ...
normal-weight coarse aggregate was replaced with the apricot shell lightweight aggregate at 0%, 25%, 50%, 75%, and , respectively. The flexural strength of apricot shell light-
What is lightweight aggregate. Lightweight aggregate concrete (LWAC) is a type of concrete that uses lightweight aggregates as its main ingredient. These aggregates are usually natural materials such as pumice, vermiculite, and perlite. LWAC is often used as a substitute for normal concrete in applications where weight is a factor, such as in ...
Expanded glass (Liaver), complying with EN 13055 provided by Liaver , Ilmenau, Germany, was used as a lightweight aggregate. Three fractions of lightweight aggregates were used: 0.5–1, 1–2, and 2–4 mm. The physical properties of the used aggregates are given in Table 2. Three different materials were used as fine aggregate with the ...
However, the concretes presented significantly low-unit weight, approximately 1200 kg/m3. This work presented a structural lightweight concrete (ACI 213-R) using only lightweight aggregates and mostly plastic waste …
Normal concrete has a self-weight of about 2400 to 2500 kg/m 3, which is very heavy, and due to its overall dead load, the size of members of the structure increases [10,11].Lightweight concrete (LWC) is a type of concrete made of either a lightweight aggregate or expanding agent [12,13,14].LWC having a dry density of 300 kg/m 3 up to 1840 kg/m 3 is …
Official manufacturer of Leca® lightweight expanded clay aggregate 10-20mm (LWA) Stability – reduces the risk of embankment landslide and deformation; Reduced settlements - to road structures, rail beds, pipelines and other structures; Reduced earth pressure - in structural backfill against foundations, retaining walls and bridge abutments; Limited compaction – …
term most commonly used to refer to structural lightweight aggregate concrete. Structural lightweight aggregate concrete is defined by the American Concrete Institute's (ACI) Guide for Structural Lightweight-Aggregate Concrete (ACI 213R) as concrete made with structural lightweight aggregate as defined in ASTM C330, Standard Specification
with cinder based light weight aggregate. Int J Sci Eng Technol Research. 2015;04(23):4437-42. 9. Sowjan ya A, Banu SS. Strength and . durability studies of light weight concrete .
Lightweight aggregate: Lightweight aggregate is often defined as any aggregate with a dry loose bulk density of less than 1200 kg/m 3. Lightweight aggregates are used to produce lower density concretes, which are advantageous in reducing the self-weight of structures and also have better thermal insulation than normal weight concrete.
Lightweight aggregates (LWA) are characterized by lower bulk density in a comparison with common construction aggregates [1].LWA with a density below 2000 kg/m 3 are used particularly for the reduction of weight, improvement of durability, and enhancement of thermal and acoustic properties of concrete [2].Quite a few different lightweight materials have …
Although its usage in civil engineering is due to aspects like cost-effectiveness and design flexibility, which have made light-weight concrete (LWC) increasingly popular in recent decades, its development brought a revolution in civil engineering. Numerous studies have been conducted in this field to examine the structural performance in various scenarios. The goal of …
Crushed pozzolan was used as lightweight aggregate (LWA) and natural sand was used in all mixes to produce a lightweight aggregate concrete (LWAC). Fresh concrete mixtures were tested for workability and density. While for the hardened concrete specimens, compressive strength, splitting tensile strength, and flexural strength were determined ...
Arcosa Lightweight is the largest producer of rotary kiln expanded shale and clay lightweight aggregate in North America, and is uniquely situated to supply expanded shale and clay lightweight aggregate to markets in most of the 48 contiguous states. Concrete construction products and a variety of other industries rely heavily on the supply of Arcosa […]
The pozzolana particles fill in the gaps between larger aggregate particles, creating a smoother and more cohesive mixture. However, when the amount of natural pozzolana …
Lightweight sintered aggregate as construction material in concrete structures Robert Grygo1,*, and Victor Pranevich2 1Department of Building Structures and Architecture, Bialystok University of Technology, Bialystok, Poland 2Department od Building Structures and Architecture, Bialystok University of Technology, Bialystok, Poland Abstract. The paper presents the result of testing …
In this study, authors investigate the cementing properties of a local Pozzolana called "Tal Shihan" and quantify its role on the compressive strength of cement.
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 ...
As the demand for nonrenewable natural resources, such as aggregate, is increasing worldwide, new production of artificial aggregate should be developed. Artificial lightweight aggregate can bring advantages to the construction field due to its lower density, thus reducing the dead load applied to the structural elements. In addition, application of artificial …
The aim of the research was to explore whether marginal materials like lightweight Volcanic Aggregates (LVA) could economically and effectively be stabilized using natural pozzolana to …
The representative light weight aggregate with a dry specific gravity of l.38 will de velop a 54 percent fraction of enclosed aggregate particle ceramic solids and a remaining 46 percent pore volume (Figure 2). This leads to the illustration of the overall porosity in a bulk loose lightweight aggregate sample as shown in Figure 3.
The c-axes of the calcium hydroxide crystals for the pozzolan cement paste and at the aggregate interface are relatively parallel to the surface of aggregate. The porosity of mortars containing natural pozzolans is usually …
Crushed pozzolan was used as lightweight aggregate (LWA) and natural sand was used in all mixes to produce a lightweight aggregate concrete (LWAC). Fresh concrete …
