The use of Dredged Marine Sediment in the Formulation of Air-foamed Concrete

2021 ◽  
Author(s):  
hamza elmoueden ◽  
Mouhamadou Mouhamadou ◽  
AGNES ZAMBON ◽  
NOUR EDINE ABRIAK ◽  
MAHFOUD BENZERZOUR
Keyword(s):  
Building Blocks ◽  
General Effect ◽  
Foam Concrete ◽  
Load Bearing ◽  
Dredged Sediments ◽  
Ordinary Concrete ◽  
Beneficial Reuse ◽  
Dredged Marine Sediment ◽  
Concrete Building ◽  
Foamed Concrete

Abstract A large quantity of sediments is dredged continuously worldwide. They are generally dumped in landfill areas which ensue in the increasing cost of the dredging operations and in soil-groundwater pollution. The objective of this work is to study the beneficial reuse of dredged sediments in foam mortar and particularly by studying the influence of the substitution of sand by dredged sediments. Air foam mortars/concrtes is an alternative to ordinary concrete, which presents the advantages of lightweight and low thermal conductivity. In this study, the density required ranges from 1200kg/m3 to 1600kg/m3 to the development of foam concrete building blocks and slabs for load-bearing and non-load-bearing structures. Twenty foam mortar mixes were prepared. Sediments were introduced by replacing 15%, 30%, and 50% mass of the sand. The foam percentage was introduced from 0–100% volume of mortar. Workability, compressive strength, and flexural strength at the age of 7, 28, and 60 days were monitored. The size distribution of foam bubbles and the effect of sediments on their stability is also studied. The results demonstrate that sediment has a good general effect on foam concrete and this opens up very promising new types of concretes. However, for a high substitution rate, a decrease in performances is denoted.

scholarly journals Experiments on Foamed Concrete for the Development of Building Blocks

2020 ◽  
Vol 8 (5) ◽  
pp. 2824-2829
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Building Blocks ◽  
Ash Content ◽  
Partial Replacement ◽  
Dry Density ◽  
Load Bearing ◽  
Concrete Building ◽  
Concrete Blocks ◽  
Foamed Concrete

Foamed concrete is an innovative and versatile lightweight building material, which is a cement-based mortar consisting of at least 20% of its volume filled with air. Use of lightweight foamed concrete blocks with densities less than 1800 kg/m3 as infills will lead to the design of slender sections. Further, the thermal insulation properties of foamed concrete blocks made it more popular in construction industry. This paper discusses the development of foamed concrete building blocks for load bearing and non-load bearing structures. To make the mix more sustainable, the feasibility of fly ash as a partial replacement to cement is also explored. The variables considered for the production of foamed concrete are foam volume, water/powder (mix of cement and fly ash) ratio, fly ash content and sand/powder ratio. Analytical model is also developed for compressive strength and dry density of foamed concrete considering different variables and it is validated. Compressive strength is found to be increasing with the increase in dry density and with increase in fly ash content. Thermal conductivity is observed to be reduced by the addition of fly ash content

Development of foamed concrete building blocks using quarry dust

2019 ◽  
pp. 169-173
Author(s):  
Mini Soman ◽  
V.S. Aparna ◽  
Jose Joseph ◽  
Milan S. Thottathil ◽  
A.R. Rahul ◽  
...  
Keyword(s):  
Building Blocks ◽  
Concrete Building ◽  
Foamed Concrete ◽  
Quarry Dust

scholarly journals Foam Concrete: A Review

2021 ◽  
Vol 9 (VII) ◽  
pp. 2224-2234
Author(s):  
Dr. Kiran Bhaskar
Keyword(s):  
Lightweight Concrete ◽  
Weight Ratio ◽  
Climatic Conditions ◽  
Labour Cost ◽  
Foam Concrete ◽  
Ordinary Concrete ◽  
Foamed Concrete ◽  
Design Production ◽  
Cost Of Production ◽  
The Cost

Foam concrete has the potential of being an alternative to ordinary concrete, as it reduces dead loads on the structure and foundation, contributes to energy conservation, and lowers the cost of production and labour cost during the construction and transportation. Presently the emerging trend is the use of foam concrete, which is a lightweight concrete having more strength-to-weight ratio with density varying from 300 to 2000 kg/m3. This reduces the dead load on the structure, cost of production and labour cost involved during the construction and transportation. Also, the large number of pores in the foamed concrete reduces the thermal and sound absorption, thus making the structure appropriate for all climatic conditions. The paper outlines a review of foamed concrete in terms of its definitions & classifications, materials, mix design, production of foamed concrete, properties of foamed concrete such as workability, density, compressive strength, porosity, fire resistance, shrinkage, water absorption, permeability. Apart from this, the paper outlines various applications of foam concrete.

Structural Characterization of Foamed Composite Structural Insulated Panel with Coir for Load Bearing Wall Application

2018 ◽  
Vol 934 ◽  
pp. 222-226
Author(s):  
Jericson H. Advincula ◽  
Dustin Glenn C. Cuevas ◽  
Allan Dave A. Dela Cruz ◽  
John Paul D. Carreon
Keyword(s):  
Flexural Strength ◽  
Structural Characterization ◽  
Exterior Wall ◽  
Load Bearing Capacity ◽  
Maximum Increase ◽  
Load Bearing ◽  
Permanent Formwork ◽  
Foamed Concrete ◽  
Design Loads

Permanent formwork building system is a method that uses the formwork as a contributor to the load bearing capacity of the structure. This study characterized the proposed foamed composite structural insulated panel (CSIP) with coir for load bearing wall application in low rise construction. The percentage of coir in foamed concrete that could significantly increase the compressive and flexural strength of the panel considering the effect of coir to the workability of the foamed concrete were determined. The results showed that the samples with 0.5% coir had the maximum increase in its compressive and flexural capacity and further addition of coir decreases its capacities. The results also showed that it could carry the required design loads. Moreover, using Euler’s buckling equation for the effect of slenderness, the panel could be used as exterior wall for a height of 2m, 3m, and 4m and as interior wall for a height of 2m and 3m. It can be concluded that the proposed panel could be used as a load bearing wall in low rise construction.

Thermal Insulating and Constructive Foamed Concrete on a Composite Gypsum Binder

2019 ◽  
Vol 974 ◽  
pp. 125-130 ◽  
Author(s):  
Natalia V. Chernyisheva ◽  
Svetlana V. Shatalova ◽  
Maria Yu. Drebezgova ◽  
Evgeniy N. Lesnichenko
Keyword(s):  
Concrete Mixture ◽  
Foam Concrete ◽  
Thermal Insulating ◽  
Mineral Addition ◽  
Foamed Concrete ◽  
Stepwise Loading ◽  
Cellular Concrete ◽  
Loading Scheme

The article discusses the possibility of obtaining the effective thermal insulating and constructive foamed concrete on a composite gypsum binder. The composition was selected, the stepwise loading scheme of the foam concrete mixture components was proposed, the properties and microstructure of cellular concrete based on a composite gypsum binder with mineral addition of finely-dispersed concrete scrap were studied.

Experimental Research on Short Compression Column of the Shale Ceramisite Concrete

2011 ◽  
Vol 366 ◽  
pp. 272-275
Author(s):  
Wei Jun Yang ◽  
Ying Jie Zhou ◽  
Cong Cong Meng
Keyword(s):  
Bearing Capacity ◽  
Experimental Research ◽  
Plane Section ◽  
Load Bearing ◽  
Normal Section ◽  
Ordinary Concrete ◽  
Short Column ◽  
Short Columns

In order to study the force performance of the short compression column of the Shale ceramisite concrete, the article have research the axis and eccentric of the eight Shale concrete rectangular short columns((l0/b≤4). As the article reach the component is divided into damage caused by pressure and destruction of tension, while it’s contingency rather than the ordinary concrete and plasticity development are shorter ; the bearing capacity of normal section by shale ceramisite Concrete is greater than specification value, it satisified with the requirement of structural load-bearing; Shale concrete short column under pressure and the strain meet a certain section of the plane-section assumption in the process of loading.

Effect of Volcanic Rock Powder on Performance of Foamed Concrete

2014 ◽  
Vol 1033-1034 ◽  
pp. 887-891
Author(s):  
Kui Fan Su ◽  
Bo Jiang ◽  
Jiang Shan Lian ◽  
Pei Cheng Qin ◽  
Si Zhi He ◽  
...  
Keyword(s):  
Portland Cement ◽  
Volcanic Rock ◽  
Dry Density ◽  
Foam Concrete ◽  
Cement Slurry ◽  
Rock Powder ◽  
Foamed Concrete ◽  
Powder Addition ◽  
Powder Content ◽  
Curing Age

Foamed concrete is prepared by the use of volcanic rock powder and ordinary portland cement and by means of chemical foaming method. The chemical composition and morphology of volcanic rock powder are analyzed,and the effect of volcanic rock powder addition into the portland cement slurry on the properties of foamed concrete is discussed.The results that the properties of the foam concrete could be prepared by controlling the addition of the volcanic rock powder content is 20%, The Compressive strength is as high as 1.36Mpa. The thermal conductivity is 0.048W/(m·K) and the dry density is 254kg/m3 for 28 days curing age. The main compositions of volcanic rock powder is SiO2 and the volcanic rock has a large number of closed and open pores.

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