Lightweight foam concrete containing expanded perlite and glass sand: Physico-mechanical, durability, and insulation properties

2022 ◽  
Vol 320 ◽  
pp. 126187
Author(s):  
Osman Gencel ◽  
Oguzhan Yavuz Bayraktar ◽  
Gokhan Kaplan ◽  
Oguz Arslan ◽  
Mehrab Nodehi ◽  
...  
2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Noridah Mohamad ◽  
A. I. Khalil ◽  
A. A. Abdul Samad ◽  
W. I. Goh

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.


2021 ◽  
Vol 306 ◽  
pp. 124887
Author(s):  
Osman Gencel ◽  
Syed Minhaj Saleem Kazmi ◽  
Muhammad Junaid Munir ◽  
Gokhan Kaplan ◽  
Oguzhan Yavuz Bayraktar ◽  
...  

2013 ◽  
Vol 634-638 ◽  
pp. 2746-2751 ◽  
Author(s):  
Noridah Mohamad ◽  
Najmuddin Hassan

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.


2018 ◽  
Vol 1 (4) ◽  
pp. 895-902
Author(s):  
Zulfan Effendi ◽  
Abdullah Abdullah ◽  
Mochammad Afifuddin

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.


◽  
2019 ◽  
Author(s):  
Hisham Alabduljabbar ◽  
◽  
Rayed Alyousef ◽  
Mugahed Amran ◽  
◽  
...  

2021 ◽  
Vol 920 (1) ◽  
pp. 012009
Author(s):  
M K Yew ◽  
M C Yew ◽  
J H Beh ◽  
L H Saw ◽  
Y L Lee ◽  
...  

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.


2021 ◽  
Vol 264 ◽  
pp. 05001
Author(s):  
Vladimir Rybakov ◽  
Anatoly Seliverstov ◽  
Kseniia Usanova ◽  
Iroda Rayimova

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.


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