CALL US

+86 17838360708

lightweight aggregate concrete sciencedirect

lightweight aggregate concrete sciencedirect

Lightweight Aggregate Concrete - ScienceDirect

Jan 01, 1992  Crushed lightweight aggregate concrete (LWAC) can also be used as an aggregate in concrete (recycled LWAC-aggregate) (European Union – Brite EuRam III, 2000).Crushed waste lightweight concrete block has been used successfully as recycled aggregates for making lightweight alkali-activated concrete using NaOH, sodium silicate and fly ash (Posi et al., 2013) with acceptable

get price

Lightweight Aggregate Concrete ScienceDirect

Lightweight aggregate concrete is made using different types of cements, mineral admixtures, and aggregates. These material variations influence the degree and rate of deterioration. This chapter examines durability of lightweight aggregate concrete to several chemical attacks—acid resistance, alkali-aggregate reaction, carbonation and ...

get price

Lightweight aggregate concrete fiber ... - ScienceDirect

Dec 01, 2012  The cement content, the water to cement ratio, the superplasticizer percentage and the weight ratio of coarse lightweight aggregate to natural river sand were 475 kg/m 3, 0.3%, 0.7% and 0.56%, respectively. The slump value for this concrete was in the range of 15–20 mm without any fibers.

get price

Lightweight aggregate concrete fiber ... - ScienceDirect

The higher brittleness and lower mechanical properties of lightweight aggregate concrete (LWAC) compared to normal weight concrete (NWC) at the same compressive strength has prevented it from being widely used in the construction industry despite its many advantages. Studies have shown that the use of fibers in LWAC is an appropriate solution ...

get price

Lightweight Concrete - an overview ScienceDirect Topics

A. Chaipanich, P. Chindaprasirt, in Eco-Efficient Masonry Bricks and Blocks, 2015 9.2 Types of lightweight concrete. Lightweight concrete can be classed according to its unit weight or density, which normally ranges from 320 to 1920 kg/m 3, according to the ACI Committee 213 Guide for Structural Lightweight Aggregate Concrete (ACI 213, 2001).There are three different lightweight concrete

get price

Light-weight Aggregate Concrete Research Papers - Academia

This paper presents the results of experiments conducted to produce green structural lightweight concrete by using oil palm shell (OPS) as coarse aggregate, and ground granulated blast furnace slag (GGBFS) as a supplementary cementing material at 30%, 50% and 70% replacement of cement, and exposed to different curing conditions.

get price

(PDF) Agricultural wastes as aggregate in concrete ...

Palm kernel shell as a lightweight aggregate in concrete. Build husks, and tobacco waste, as aggregate in making concrete. Since Environ 1990;25:291–6. aggregate makes up about 60–80% of the volume of the concrete, [18] Basri HB, Mannan MA, Zain MFM.

get price

Lightweight Aggregate Concrete - 1st Edition

Oct 28, 2002  Purchase Lightweight Aggregate Concrete - 1st Edition. Print Book E-Book. ISBN 9780815514862, 9780815518204

get price

SOLITE (USA) - Northeast Solite CorporationNortheast ...

Imagine what you can build. With Solite ®, architects and engineers create buildings that stretch the imagination and stand the test of time. Northeast Solite has seven decades of world leadership in process innovation, construction application, and design of lightweight aggregate concrete.

get price

The Effect of Aggregate Properties on Concrete

Lightweight concrete contains aggregate that is natural or synthetic which weighs less than 1,100 kg/m 3 and heavyweight concrete contains aggregates that are natural or synthetic which weigh more than 2080 kg/m 3. Although aggregates are most commonly known to be inert filler in concrete, the different properties of aggregate have a large ...

get price

Bio-based ultra-lightweight concrete applying miscanthus ...

bio-based lightweight aggregates like hemp and Miscanthus fibers can function as sound absorption materials in cement and concrete [ l. Gle et al. [ ] investigate the acoustic absorption of hemp fiber rein- 14,15 forced concrete by experimental and modelling methods. The results show the hemp fibers itself can greatly absorb sounds and also can in-

get price

(PDF) Lightweight aggregate concrete fiber reinforcement ...

The higher brittleness and lower mechanical properties of lightweight aggregate concrete (LWAC) compared to normal weight concrete (NWC) at the same compressive strength has prevented it from being widely used in the construction industry despite its

get price

Cement Concrete Composites - concrete.nist.gov NIST

Lightweight aggregates Shrinkage cracking Restrained shrinkage Unrestrained shrinkage abstract Low water to cement ratio (w/c) concrete exhibits increased occurrences of early-age shrinkage cracking. These occurrences have spawned innovative developments in concrete

get price

(PDF) Performance of HYBRID fibres in concrete

Jul 01, 2021  ScienceDirect. ICRADMM 2020. Performance of Hybrid Fibres in Concrete. ... (lightweight aggregate concrete) and HPC (high-performance concrete-high-strength and fibre-reinforced), typically found ...

get price

A simple mix design method for structural lightweight ...

Feb 21, 2013  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 SLWAC mix design is more complex than that of normal weight concrete as more parameters need to be determined. Taking this into account, a simplified design method is proposed for SLWAC

get price

The Effect of Lightweight Aggregate Water Absorption on ...

Generally, in the case of lightweight aggregate concrete (LWAC), due to high water absorption of the porous aggregate, the actual water-cement ratio is usually lower in comparison to its nominal value, and it is difficult to determine. There are a lot of factors influencing the actual water-cement ratio of lightweight aggregate concrete mixtures.

get price

Advantages and Disadvantages of Lightweight Concrete ...

Jun 29, 2020  These vary from lightweight aggregate concrete, foamed concrete, or Autoclaved Aerated Concrete (AAC). The aggregates used in AAC are extremely fine, even smaller than a grain of sand. This composition makes AAC highly suitable for pre-casting and reshaping. AAC structures are so soft that they can be hand-sewn and pierced by nails or screws.

get price

Lightweight concrete

Concrete is considered to be lightweight is the density is not more than 2200kg/m 3 (the density of normal weight concrete is assumed to be between 2300kg/m 3 and 2400kg/m 3) and a proportion of the aggregate should have a density of less than 2000kg/m 3. Lightweight concrete can be specified using the notation LC for the strength class, e.g ...

get price

Academics in Lightweight Aggregate Concrete - Academia

View Academics in Lightweight Aggregate Concrete on Academia.

get price

lightweight concrete - SlideShare

Nov 01, 2012  2. Preparation of concrete without the smooth (rough concrete) Lightweight concrete such as is obtained when the fine aggregate (sand) is not used and the concrete mix of cement, water and coarse aggregates. Concrete can be used for structural purposes and not

get price

Resistance of insulating-structural concretes to high ...

ScienceDirect sciencedirect ... of concretes made of expanded glass perlite and polystyrene aggregates exposed to ... the potential higher resistance of lightweight concrete to high ...

get price

Cement and Concrete Composites

Lightweight structural concrete uses lightweight aggregate as com-plete or partial replacement of the conventional aggregates. Typical aggregates include expanded slag, shale and clay, as well as slag, pum-ice, scoria and recently cenospheres, in conjunction with supplementary cementitious materials as partial cement replacement [25,26]. Although

get price

Ashes to Concrete Now Drexel University

Oct 28, 2019  Ashes to Concrete. Drexel researchers are recycling coal ash, a waste product from coal power plants, to make a porous, lightweight aggregate that can be used as a concrete additive to aid the hardening process. Coal ash is the less notorious byproduct of coal-fired power plants. It’s the residual solid waste that comes from burning coal.

get price

Effects of Waste PET Bottles Aggregate on the Properties ...

The waste PET lightweight aggregate (WPLA) was analyzed for compressive strength, splitting tensile strength, modulus of elasticity, slump, and density. Results showed that the 28-day compressive strength of WPLAC with the replacement ratio of 75% reduces about 33% compared to the control concrete in the water-cement ratio of 45%.

get price

Lightweight aggregate concrete with an open structure and ...

Lightweight aggregate concrete with an open structure and a porous matrix with an improved ratio of compressive strength to dry density

get price

Available online at sciencedirect Energy Procedia

Available online at sciencedirect Energy Procedia Energy Procedia 00 (2011) 000–000 ... Concrete Qing Wang a*, ... porous fly ash lightweight aggregate. The effect of energy storage of ...

get price

Assessment of lightweight concrete properties under ...

sciencedirect Procedia Structural Integrity 28 (2020) 1467–1472 ... In this experimental work, the variation of the modulus of elasticity of lightweight clay aggregate concrete, due to ...

get price

Cement and Concrete Composites

Lightweight structural concrete uses lightweight aggregate as com-plete or partial replacement of the conventional aggregates. Typical aggregates include expanded slag, shale and clay, as well as slag, pum-ice, scoria and recently cenospheres, in conjunction with supplementary cementitious materials as partial cement replacement [25,26]. Although

get price

Cement Concrete Composites

As a further concrete example, the lack of distinct and more porous ITZ regions in lightweight aggregate concretes could con-tribute to Thomas’ observation of apparent diffusion coefficients that are reduced by as much as 70% due to the incorporation of LWA

get price

Advantages and Disadvantages of Lightweight Concrete ...

Jun 29, 2020  These vary from lightweight aggregate concrete, foamed concrete, or Autoclaved Aerated Concrete (AAC). The aggregates used in AAC are extremely fine, even smaller than a grain of sand. This composition makes AAC highly suitable for pre-casting and reshaping. AAC structures are so soft that they can be hand-sewn and pierced by nails or screws.

get price

Cement Concrete Composites

self-compacting concrete. They designed a lightweight self-com-pacting concrete with the density between 2000 and 2300 kg/m3 and found it is difficult to obtain a sufficient flowability with the increase of the lightweight fine aggregates in the mixture. Ünal et al. [12] developed a lightweight concrete block applying diato-

get price

The effect of aggregate absorption on pore area at ...

An experimental program was carried out to study the effect of water absorption of lightweight aggregate on the pore size distribution at the interfacial zone of lightweight aggregate concrete. Properties of lightweight expanded clay aggregates with absorption of 8.9%, 9.4% and 11% were compared. In order to do the study, three lightweight ...

get price

Effects of Waste PET Bottles Aggregate on the Properties ...

The waste PET lightweight aggregate (WPLA) was analyzed for compressive strength, splitting tensile strength, modulus of elasticity, slump, and density. Results showed that the 28-day compressive strength of WPLAC with the replacement ratio of 75% reduces about 33% compared to the control concrete in the water-cement ratio of 45%.

get price

State-of-the-Art Report on Fiber-Reinforced Lightweight ...

Lightweight aggregate concrete was the primary manufactured material, using Greek or Italian pumice aggregates mixed with limestone paste. Today, modern lightweight aggregate concrete consists of lightweight aggregate held together by a paste consisting of Portland cement and water [1, 2].

get price

Thermal and mechanical properties of structural ...

thermal insulation and fire resistance, lightweight concrete (LWC) has been widely studied both as structural and nonstructural building material [1]. Traditionally, structural lightweight concrete are produced by incorporating coarse lightweight aggregates (LWA) such as pumice, perlite [2–4], expanded shale [5–7] and expanded clay [1 ...

get price

A mechanistic study on mitigation of alkali-silica ...

A mechanistic study on mitigation of alkali-silica reaction by fine lightweight aggregates. Previous studies have shown that fine lightweight aggregates (FLWAs) may be a possible solution for alkali-silica reaction (ASR) mitigation. However, the mechanisms of mitigation have not yet been fully elucidated.

get price

Durability of lightweight concretes with lightweight fly ...

Durability of lightweight concretes with lightweight fly ash aggregates. This paper presents the effects of aggregate properties such as strength, porosity, water absorption, bulk density and specific gravity on the strength and durability of lightweight fly ash aggregate concrete (LWAC).

get price

Use of zeolite-rich rocks and waste materials for the ...

Use of zeolite-rich rocks and waste materials for the production of structural lightweight concretes R. de Gennaroa,⁎, A. Langellab, M. D'Amorec, M. Dondid, A. Colellac, P. Cappelletti c, M. de' Gennaroc a CISAG, Università Federico II, Via Mezzocannone 8, 80134 Napoli, Italy b Dipartimento di Studi Geologici ed Ambientali, Universita` del Sannio, via Port'Arsa 11, 82100 Benevento, Italy

get price