Lightweight Aggregate Concrete - Properties, …
24.03.2014 · 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 aggregate, should have a density of less than 2000 kg/m 3 .
Lightweight Concrete: Light weight aggregate …
Most of the lightweight concrete mix is made with lightweight aggregates. Lightweight concretes strengths are generally in the range of 0.3 N/mm2(44 psi) to 40 N/mm2( 5800 psi) and cement content in the range of 13 lb/ft3 (200 kg/m3). The density of aggregate plays a vital role in the strength of lightweight concrete. Lightweight concrete is a special concrete whose density varies from 19 lb ...
Different Types & Sizes of Aggregate for Concrete ...
11.08.2018 · The usual range employed is between 9.5mm and 37.5mm in diameter. Typically the most common size of aggregate used in construction is 20mm. A larger size, 40mm, is more common in mass concrete. Larger aggregate diameters reduce the quantity of cement and …
Effects of Aggregate and Specimen Sizes on …
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. Based on experimental observations and verification of prior empirical models, simple closed-form equations were proposed to generalize the …
CHAPTER 3 - PHYSICAL PROPERTIES OF LIGHTWEIGHT AGGREGATE
Most lightweight concretes use a lightweight coarse aggregate 3/4 in. to #4 mesh (1/2 - #8) with ordinary sand, minus #4 mesh (minus 4.8 mm), however other combinations of LWA and natural aggregate are used. Aggregate for lightweight concrete masonry units are normally sized minus 3/8 in. (9.5 mm). This aggregate is usually the crushed variety because of improved machining
Lightweight Aggregate - an overview | …
With the pre-soaked lightweight aggregates it was possible to pump the concrete from street level up 250 m to the top floor using one concrete pump at street level (17). Lightweight concrete is durable and is enormously useful for repairing and refurbishing ageing infrastructure.
(PDF) The strength of lightweight aggregate in …
Lightweight concrete is used to minimize overall dead load in structures, and also has a remarkable fire resistance quality more than normal weight aggregate concrete. Lightweight concrete can be ...
Aggregate size| Concrete Construction Magazine
01.06.1961 · The larger sizes will require less mixing water and hence, for a given cement factor, will produce concrete of lower water-ratio than the smaller sizes. 3. The advantage of small aggregate in the water-ratio strength relationship may or may not be sufficient to offset the effects of its higher mixing water demand. It appears that optimum maximum size, so far as strength is concerned, will vary ...
Standard Specification for Lightweight …
C567 Test Method for Determining Density of Structural Lightweight Concrete. C641 Test Method for Iron Staining Materials in Lightweight Concrete Aggregates. C666/C666M Test Method for Resistance of Concrete to Rapid Freezing and Thawing. C702 Practice for Reducing Samples of Aggregate to Testing Size. D75 Practice for Sampling Aggregates. ACI ...
What is Lightweight Concrete? -Types, Uses and …
15.03.2010 · Lightweight concrete mixture is made with a lightweight coarse aggregate and sometimes a portion or entire fine aggregates may be lightweight instead of normal aggregates. Structural lightweight concrete has an in-place density (unit weight) on the order of 90 to 115 lb / ft³ (1440 to 1840 kg/m³).
aggregate size on lightweight concrete - …
Hence, concretes with the larger-sized aggregates require less mortar per unit volume of concrete, and of coarse it is the mortar which contains the most expensive ingredient, cement Thus the ACI method is based on the principle that the maximum size of aggregate should be the largest available so long it is consistent with the dimensions of .
Effect of Aggregate Size on Shear Behavior of …
01.09.2011 · Keywords: Aggregate size; continuous beam; lightweight concrete; modification factor; shear. Date: 9/1/2011. Abstract: Twelve continuous slender beams were tested to ascertain the effect of the maximum aggregate size on the shear behavior of concrete beams. The typical characteristics of the failure surface along the inclined cracks of the ...
ULTRA LIGHT WEIGHT CONCRETE - Cement, Concrete, Aggregates
Aggregate Size Polystyrene beads Slump +/- 60mm LIGHT WEIGHT AGGREGATE CONCRETE (Structural) Can achieve up to 30MPa dependant on density requirements – (800kg/m3 – 1600kg/m3) Cement Type 100% OPC where available Aggregate Type Combination 19mm and light weight aggregate Slump +/- 75mm MINIMUM STANDARD FOR LIGHT WEIGHT CONCRETE NOTE CONCRETE WHERE TO USE POLYSTYRENE LIGHT WEIGHT CONCRETE ...
Lightweight concrete - PORAVER expanded glass
In addition, light weight concrete is non-combustible, sound-absorbing and particularly economical. With Poraver® expanded glass granules as an aggregate, lightweight concrete becomes a purely mineral and ecological building product which can simply be recycled if needed.
The Effect of Aggregate Properties on Concrete
Lightweight aggregate concrete may be more influenced by the compressive strength of the aggregates. ... These properties include shape and texture, size gradation, moisture content, specific gravity, reactivity, soundness and bulk unit weight. These properties along with the water/cementitious material ratio determine the strength, workability, and durability of concrete. The shape and ...
Influence of expanded glass aggregate size, …
09.04.2020 · Lightweight aggregate concrete is subjected to having lower density and thermal conductivity, and it is very useful for building thermal insulation. In the recent few years, various investigations carried out on the properties of aerogel incorporating lightweight concrete , . 1–2 mm size aerogel particles and aerogel powder/dust were used in the concrete mixture to investigate its …