High Strength Lightweight Foam Concrete

This paper presents the structural behaviour of precast lightweight foam concrete sandwich panel (PFLP) under flexure, studied experimentally and theoretically. Four (4) full scale specimens with a double shear steel connector of 6 mm diameter and steel reinforcement of 9 mm diameter were cast and tested. The panel’s structural behavior was studied in the context of its ultimate flexure load, crack pattern, load-deflection profile, and efficiency of shear connectors. Results showed that the ultimate flexure load obtained from the experiment is influenced by the panel’s compressive strength and thickness. The crack pattern recorded in each panel showed the emergence of initial cracks at the midspan which later spread toward the left and right zones of the slab. The theoretical ultimate load for fully composite and noncomposite panels was obtained from the classical equations. All panel specimens were found to behave in a partially composite manner. Panels PLFP-3 and PLFP-4 with higher compressive strength and total thickness managed to obtain a higher degree of compositeness which is 30 and 32.6 percent, respectively.

Download Full-text

FOAM CONCRETES BASED ON HIGH-STRENGTH BINDERS

Modern Technologies and Scientific and Technological Progress ◽

10.36629/2686-9896-2020-2018-1-97-98 ◽

2020 ◽

Vol 2018 (1) ◽

pp. 97-98

Author(s):

Al'bina Baranova ◽

Ol'ga Yazina

Keyword(s):

High Strength ◽

Foam Concrete

Presents the results of testing foam concrete on different brands of binders and with different fillers.

Download Full-text

Study on Properties of Foam Concrete Based on Fractal Theory

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.194-196.1916 ◽

2011 ◽

Vol 194-196 ◽

pp. 1916-1919 ◽

Cited By ~ 2

Author(s):

Wen Ling Tian ◽

Jiang Bo Yang ◽

Xiao Yan Zhao

Keyword(s):

Fractal Dimension ◽

Fly Ash ◽

Thermal Insulation ◽

Fractal Theory ◽

High Strength ◽

Sound Insulation ◽

Foam Concrete ◽

Insulation Property ◽

Foaming Agent ◽

Thermal Insulation Property

Foam concrete is provided with light weight, thermal insulation, sound insulation and fire resistance, good seismic performance and other characteristics. To improve properties of foam concrete microstructure is studied with the help of fractal theory, fractal dimension related to mechanical properties and thermal performance of foam concrete is calculated by MATLAB language program. The results indicate that the microstructure of foam concrete showed significant fractal character, the fractal dimension is between 1.3 and 2.0. Apparent density, 28d compressive strength, and thermal conductivity decreases with the increase of fly ash and foaming agent content, fractal dimension increased. Formulas of fractal dimension and the fly ash, foaming agent content were established. Foam concrete with low density, high strength, and good thermal insulation property will be prepared conducted by the formulas.

Download Full-text

Influence of Foaming Agent on the Properties of High Density Foam Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.399-401.1214 ◽

2011 ◽

Vol 399-401 ◽

pp. 1214-1217 ◽

Cited By ~ 1

Author(s):

Xin Gang Yu ◽

Yan Na Gao ◽

Lin Lin ◽

Fang Li

Keyword(s):

Compressive Strength ◽

Flexural Strength ◽

Lightweight Concrete ◽

Drying Shrinkage ◽

High Strength ◽

High Density ◽

Low Density ◽

Dilution Ratio ◽

Foam Concrete ◽

Foaming Agent

Lightweight concrete has been used for structural purposes for many years and it is developed very fast in resent years due to its lightweight and favourable for insulation properties. High strength foam concrete is a fairly new kind of lightweight concrete with excellent properties of outstanding workability, low density and high strength. Responsible for these properties are the macro-, meso- and micro- porosity of the foam concrete which are mainly affected by the foaming agent. The influence of foaming agent’s dilution ratio and foam dosage on the fluidity, compressive strength, flexural strength and drying shrinkage of high density foam concrete designed for structural materials is investigated in this paper.

Download Full-text

The Structural Performance of Precast Lightweight Foam Concrete Sandwich Panel with Single and Double Shear Truss Connectors Subjected to Axial Load

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.634-638.2746 ◽

2013 ◽

Vol 634-638 ◽

pp. 2746-2751 ◽

Cited By ~ 8

Author(s):

Noridah Mohamad ◽

Najmuddin Hassan

Keyword(s):

Construction Industry ◽

Axial Load ◽

Sandwich Panel ◽

Structural Performance ◽

Foam Concrete ◽

Shear Connectors ◽

Double Shear ◽

Steel Bar ◽

Strength Capacity ◽

Lightweight Foam

The progressive research upon the issue on renewal technology that can improve the construction industry has initiated the study of Precast Lightweight Foam Concrete Sandwich Panel (PLFP) as an alternative to Industrialize Building System (IBS). This paper reports the analysis of structural behavior of PLFP with double shear connectors under axial load. The PLFP panel consists of two wythes which enclosed a layer of polystyrene layer. Six (6 mm) rebar was used as the vertical and horizontal reinforcement and 9 mm steel bar bent at 450 was used as the connector. Full scaled panel was tested under axial load till failure. It was found that PLFP panel with double shear truss connector has higher ultimate strength capacity compared to PLFP with single shear connectors ehen tested under axial load.

Download Full-text

Effects of Hydrogen Peroxide on Foam Concrete Performances

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.584-586.1746 ◽

2014 ◽

Vol 584-586 ◽

pp. 1746-1749 ◽

Cited By ~ 1

Author(s):

Yu Li Cui ◽

Fu Guo Qian ◽

Shu Xiu Liu ◽

Hai Tao Yin

Keyword(s):

Thermal Conductivity ◽

Hydrogen Peroxide ◽

Surface Morphology ◽

Building Materials ◽

Mass Density ◽

High Strength ◽

Utilization Efficiency ◽

Foam Concrete ◽

Low Mass ◽

Addition Amount

This paper reports the effects of hydrogen peroxide in surface morphology, strength, density, thermal conductivity of foam concrete and hydrogen peroxide utilization efficiency. The results show that these foam concretes are new and innovative building materials with interesting properties: low mass density and high strength when the addition amount of hydrogen peroxide is in 5%~6% range. Responsible for these properties are the macro-and microporosity. Macropores are created by adding hydrogen peroxide in different addition amount. It is also found that the utilization efficiency of hydrogen peroxide is higher when the addition amount of hydrogen peroxide is in the range of 5%~6%.

Download Full-text

PERILAKU DAN ANALISA KEKUATAN PANEL PRACETAK FERROFOAM CONCRETE YANG DIBEBANI LENTUR STUDI KASUS : PANEL PRACETAK BERBENTUK U (LU)

Jurnal Teknik Sipil ◽

10.24815/jts.v1i4.10050 ◽

2018 ◽

Vol 1 (4) ◽

pp. 895-902

Author(s):

Zulfan Effendi ◽

Abdullah Abdullah ◽

Mochammad Afifuddin

Keyword(s):

Shear Failure ◽

Lightweight Concrete ◽

Precast Concrete ◽

Normal Weight ◽

Mix Design ◽

Foam Concrete ◽

Construction Methods ◽

Concrete Mix Design ◽

Precast Construction ◽

Lightweight Foam

Abstract: The construction industry still depends on conventional construction methods. The concept of conventional construction must start to look for alternatives. One of them is by using precast panels. Construction precast panels typically use normal concrete, concrete weaknesses of normal weight is too heavy. The use of lightweight concrete in precast construction can solve the problem. One type of lightweight concrete used is lightweight foam concrete. The use of lightweight foam concrete in construction of precast panels facilitate the progress in the field, able to be appointed by the workforce. The aim of research to determine the behavior and capacity analysis ferrofoam precast concrete panels loaded U-shaped bending. This experiment is testing the U-shaped bending (LU) lightweight foam concrete. Dimensions of the test specimen with a length of 2200 mm, width 600 mm and 500 mm, height 120 mm and 80 mm, 30 mm thick. Concrete mix design based on the density is 1600 kg/m3 with FAS 0.4 and 21 MPa quality plan. The results showed that the maximum capacity of panel LU 600-120 1.34 tf at 26.81 mm deflection, LU 600-80 at 0.79 tf at 46.85 mm deflection, LU 500-80 on a deflection of 0.69 tf 39 , 82 mm. Model panel collapse LU LU 600-120 and 600-80 is shear failure, but for LU 500-80 flexural failure. Ductility panel LU 600-80 only 87% of ductility LU 600-120 is a panel with high variation. Ductility panel with wide variations LU panel 500-80 88% biggest than the LU 600-80. Abstrak: Industri konstruksi masih tergantung dengan metode konstruksi konvensional. Konsep konstruksi konvensional harus mulai dicarikan alternatif pengganti. Salah satunya adalah dengan menggunakan metode panel pracetak. Konstruksi panel pracetak biasanya menggunakan beton normal, kelemahan beton normal bobot terlalu berat. Penggunaan beton ringan pada konstruksi pracetak dapat menyelesaikan permasalahan tersebut. Salah satu jenis beton ringan yang digunakan adalah beton ringan busa. Penggunaan beton ringan busa pada konstruksi panel pracetak memudahkan dalam pengerjaan dilapangan, mampu diangkat oleh tenaga kerja. Tujuan penelitian untuk mengetahui perilaku dan analisa kapasitas panel pracetak ferrofoam concrete berbentuk U yang dibebani lentur. Pengujian yang dilakukan adalah pengujian lentur berbentuk U (LU) beton ringan busa. Dimensi benda uji dengan panjang 2200 mm, lebar 600 mm dan 500 mm, tinggi 120 mm dan 80 mm, tebal 30 mm. Mix design beton berdasarkan berat jenis yaitu 1,6 dengan FAS 0,4 dan mutu rencana 21 MPa. Hasil penelitian adalah kapasitas maksimum panel LU 600-120 sesebar 1,34 tf pada lendutan 26,81 mm, LU 600-80 sebesar 0,79 tf pada lendutan 46,85 mm, LU 500-80 sebesar 0,69 tf pada lendutan 39,82 mm. Model keruntuhan panel LU 600-120 dan LU 600-80 adalah keruntuhan geser, namun untuk LU 500-80 keruntuhan lentur. Daktilitas panel LU 600-80 hanya 87% dari daktilitas LU 600-120 merupakan panel dengan variasi tinggi. Daktilitas panel dengan variasi lebar panel LU 500-80 lebih besar 88% dibanding LU 600-80.

Download Full-text

Applicable use of lightweight foam concrete composite sandwich panels as a flooring system

◽

10.18552/2019/idscmt5002 ◽

2019 ◽

Author(s):

Hisham Alabduljabbar ◽

◽

Rayed Alyousef ◽

Mugahed Amran ◽

◽

...

Keyword(s):

Sandwich Panels ◽

Foam Concrete ◽

Composite Sandwich Panels ◽

Composite Sandwich ◽

Lightweight Foam

Download Full-text

Fire resistance of lightweight foam concrete by incorporating lightweight bio-based aggregate

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/920/1/012009 ◽

2021 ◽

Vol 920 (1) ◽

pp. 012009

Author(s):

M K Yew ◽

M C Yew ◽

J H Beh ◽

L H Saw ◽

Y L Lee ◽

...

Keyword(s):

Compressive Strength ◽

Fire Resistance ◽

Coarse Aggregate ◽

Positive Outcome ◽

Strength Properties ◽

Sound Insulation ◽

Foam Concrete ◽

Load Bearing ◽

Oil Palm Shell ◽

Lightweight Foam

Abstract Concrete is widely used in the industry due to its effectiveness in terms of cost and strength. In this study, the introduction of bio-based aggregate as coarse aggregate in lightweight foam concrete will be investigated to find a better solution for fire incidents that are commonly happened. As such, lightweight foam concrete (LWFC) has been applied in many buildings especially in non-load bearing wall to enhance thermal conductivity, sound insulation and fire resistance. The aim of this research is to investigate the effect of incorporating bio-based aggregate namely oil palm shell (OPS) into lightweight form concrete in terms of strength properties and fire resistance. Three different concrete mix was designed containing different percentage of OPS aggregate replacement (0, 5, 10 and 15%). From the result, the compressive strength of the LWFC-CTR mixture had achieved the highest compressive strength at 28-day, which is recorded at 3.82 MPa. The fire resistance of LWFC-OPS 15% had showed a positive outcome with improvement by almost 23.5% compared to control mix at 15 minutes. Therefore, the major finding of this research is the incorporation of eco-friendly OPS aggregate has improved the fire resistance of lightweight foam concrete, which can be used as an alternative solution for non-load bearing walls.

Download Full-text

Combustibility of lightweight foam concrete based on natural protein foaming agent

E3S Web of Conferences ◽

10.1051/e3sconf/202126405001 ◽

2021 ◽

Vol 264 ◽

pp. 05001

Author(s):

Vladimir Rybakov ◽

Anatoly Seliverstov ◽

Kseniia Usanova ◽

Iroda Rayimova

Keyword(s):

Evaluation Criteria ◽

Foam Concrete ◽

Sample Mass ◽

Foaming Agent ◽

Natural Protein ◽

Temperature Increment ◽

Concrete Temperature ◽

Floor Structure ◽

Stable Flame ◽

Lightweight Foam

There is an experimental study of samples of monolithic foam concrete “SOVBI” with a density of 205 kg /m3 (grade D200) for combustibility. The evaluation criteria are the following values of combustion characteristics: temperature increment in the furnace, duration of the stable flame burning, sample mass loss. The experimental results show the following values for foam concrete: temperature increment in the furnace of 2 °C, duration of the stable flame burning of 0 s, and sample mass of 24.4%. Thus, monolithic foam concrete with a density of 205 kg/m3 is noncombustible material. It is proposed to use monolithic foam concrete and other lightweight monolithic cellular foam concrete, as a structural fire protection for lightweight steel concrete structures. It, in turn, can increase the fire resistance of external walls and floor structure with the steel frame of cold-formed zinc-coated profiles.

Download Full-text