Experimental Research on Foamed Concrete Block with High Addition Crushed Brick Powder

2012 ◽  
Vol 602-604 ◽  
pp. 934-937
Author(s):  
Xue Wang ◽  
Yuan Chen Guo
Keyword(s):  
Compressive Strength ◽  
Vitreous Body ◽  
Concrete Block ◽  
Raw Material ◽  
Brick Powder ◽  
Ordinary Temperature ◽  
Foamed Concrete ◽  
Main Chemical Composition ◽  
Crushed Brick ◽  
Temperature And Pressure

Crushed brick foamed concrete block is made of crushed brick as a main raw material and Portland cement as a cementious material, mixed with various additives, foamed by foamer and cured under the ordinary temperature and pressure condition. Studies have shown that: (1) The main chemical composition of CBP are SiO2 and Al2O3, CBP has high content vitreous body. CBP has a certain activity (2) With the increase of CBP fineness, the compressive strength of the specimen increases. (3) With the increase of the mixing amount of CBP, the compressive strength of the specimen decrease. (4) With the increase of the mixing amount of commercial caustic soda, the compressive strength of the specimen increases first then decreases.

Effects of Activator on the Properties of Brick Powder Foam Concrete

2015 ◽  
Vol 777 ◽  
pp. 224-228 ◽  
Author(s):  
Xiang Liu ◽  
Yuan Jun Li
Keyword(s):  
Compressive Strength ◽  
Chemical Composition ◽  
Silicon Dioxide ◽  
Water Absorption ◽  
Apparent Density ◽  
Dry Density ◽  
Test Results ◽  
Foam Concrete ◽  
Brick Powder ◽  
Main Chemical Composition

The main chemical composition of waste brick is silicon dioxide,by means of chemical can stimulate its activity.In this experiment, gypsum, lime sodium hydroxide as activators,through the testing and research about the properties of compressive strength, dry density, water absorption of brick powder foam concrete,analyse the influence of three activators on the properties of foam concrete.The test results show that the:Mixing about 25% lime can guarantee the dry apparent density on the basis of compressive strength increases;Mixing 20% gypsum can make the strength and dry apparent density relatively stable;The incorporation of NaOH make the foam concrete appear quick setting,so it should not be used alone as activator.

Effect of Raw Material Ratios on the Compressive Strength of Chang Jiang Iron Ore Gangues Aerated Concrete Block

2012 ◽  
Vol 573-574 ◽  
pp. 92-98
Author(s):  
Wen Hua Xu ◽  
Hao Zhang ◽  
Wei Jun Ren ◽  
Jin Yi Wu
Keyword(s):  
Compressive Strength ◽  
Aluminum Powder ◽  
Quartz Sand ◽  
Iron Ore ◽  
Raw Materials ◽  
Dry Weight ◽  
Concrete Block ◽  
Raw Material ◽  
Optimum Ratio ◽  
Aerated Concrete

The present study was to investigate the production of aerated concrete block from ChangJiang iron ore gangues. Analyze Quartz Sand, cement, CaO and gangue’s ratio’s influence on the aerated concrete block’s compressive strength, and then determine the optimum ratio. The results shows that gangue, quartz sand, cement, CaO, gypsum, aluminum powder, additive’s optimum ratio is 60.11%，8.26%，15.03%, 14.07%, 2%, 0.06% and 0.07% the dry weight of raw materials. Obtain the strongest compressive strength with the ratio 0.59:1 for water and raw materials. Adding iron gangues into aerated concrete block can turn wastes into treasures, which is originally done by us.

Experimental Research on Strengthen Mechanism of NaOH on Light Wall Materials Prepared from Crushed Brick Powder

2012 ◽  
Vol 535-537 ◽  
pp. 1657-1660
Author(s):  
Xue Wang ◽  
Yuan Chen Guo
Keyword(s):  
Experimental Research ◽  
Foam Glass ◽  
Raw Material ◽  
Wall Material ◽  
Light Weight ◽  
Mechanism Analysis ◽  
Main Research ◽  
Brick Powder ◽  
Soda Content ◽  
Crushed Brick

Crushed brick light weight wall material, which was made of crushed brick as a main raw material and P•S cement as a cementious material. Crushed foam glass and some admixtures were added, is prepared under the ordinary temperature and pressure condition. The main research in this paper is if NaOH has good alkaline excitation on crushed brick light weight wall material through experimental research and mechanism analysis. Studies have shown that: (1) The main chemical composition of crushed brick powder are SiO2 and Al2O3, crushed brick powder have a certain activity.(2) NaOH releases the activity of the internal soluble SiO2 and Al2O3.(3) In this experiment system, when the caustic soda content is about 3%, there has been an obvious peak of compressive strength.

Refractory Performance Study on Foamed Concrete and Concrete

2013 ◽  
Vol 357-360 ◽  
pp. 1034-1038
Author(s):  
Shui Jun Yu ◽  
Peng Fei Zhang ◽  
Xiao Fang Yang ◽  
Hong Zhao ◽  
Xiao Li Chen
Keyword(s):  
Compressive Strength ◽  
Loss Rate ◽  
Concrete Block ◽  
Strength Loss ◽  
Performance Study ◽  
Concrete Compressive Strength ◽  
Foam Concrete ◽  
Foamed Concrete ◽  
Heat Preservation ◽  
In Fire

Foam concrete is used in building energy saving and heat preservation project, and its refractory performance is very important to improve the fire resistance ability of the building. In this paper, fireproof property of the foamed concrete were studied.In the simulation fire conditions, compressive strength value of foamed concrete in different density, different calcination time, and different water content cases were determined first, then influence of these conditions on the foamed concrete refractory performance were researched. The results showed that foamed concrete compressive strength loss rate increase with density decreases in fire cases; Density of 300kg/m3 and 800kg/m3 foam concrete block, calcinated under 800°C fire in 20 min, its compressive strength loss rate were 66.3% and 25.5% respectively; The same density of foamed concrete compressive strength gradually reduce with the increase of calcining time; Moisture content on the different density of foam concrete affect differently on the fire safety. Foamed concrete is incombustible, but its compressive strength reduced due to fire inflammable material of high temperature calcined.

A Summary of Strength Formation Mechanism of Light Wall Material

2012 ◽  
Vol 217-219 ◽  
pp. 1099-1102
Author(s):  
Xue Wang ◽  
Yuan Chen Guo
Keyword(s):  
Theoretical Basis ◽  
High Strength ◽  
Foam Plastic ◽  
Raw Material ◽  
Wall Material ◽  
Light Weight ◽  
Ordinary Temperature ◽  
Mineral Powder ◽  
Wall Materials ◽  
Temperature And Pressure

The lisht wall material is one of the major trends of wall materials currently Light weight wall material is made of active mineral powder as a main raw material and P. O cement as a cementious material. Spent foam plastic and some admixtures were added, foamed and cured in the nature under the ordinary temperature and pressure condition. The article introduces and analyzes exhaustively the strength mechanism of lisht wall material and prepares theoretical basis for the preparation of high-strength lisht wall material.

Brick and Glass Concrete

2021 ◽  
Vol 9 (9) ◽  
pp. 1562-1570
Author(s):  
Er. Tajamul Islam
Keyword(s):  
Compressive Strength ◽  
Glass Powder ◽  
Construction And Demolition Waste ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Demolition Waste ◽  
Recycled Glass ◽  
Fine Aggregates ◽  
Brick Powder ◽  
Crushed Brick

Abstract: Glass is widely used in our lives through manufactured products such as sheet glass, bottles, glassware, and vacuum tubing. Glass is an ideal material for recycling. The use of recycled glass helps in energy saving. The recycled glass has significant contributions to the construction field for concrete production. The application of glass in architectural concrete still needs improvement. Many experiments were conducted to explore the use of waste glass as coarse and fine aggregates for both ASR (Alkali-Silica-Reaction) in concrete. The accumulation and management of construction and demolition waste, which increases along with the continuous spreading of urbanization and industrialization. Construction and demolition waste can be recycled and used as a raw material for new applications. Recycled brick aggregates recovered from demolished masonry structures can be utilized in the manufacture of new concrete mixtures. Hence, partial replacement of fine aggregate by the other compatible material like sintered fly ash, crushed rock dust, quarry dust, glass powder, recycled concrete dust, and others are being researched from the past two decades to conserve the ecological balance. additional plasticizers have been used for this project for improving their workability. In this project experimental studies on the concrete of M20 grade with partial replacement of fine aggregates by crushed brick powder (replacement by 5%, 10%, 15%,20%,30%) and crushed glass powder (replacement by 5%, 10%, 15%). The compressive strength of M20 grades of concrete at different days (3 days 7 days, 28 days) has been determined along with the measurements of workability in the slump test. The trial cubes were cast and tested at different stages. When fine aggregates are replaced by 30% crushed brick powder. The decrease in strength at the end of 28 days was found to be ranging from 22.2% and 9.81%. when fine aggregates are replaced by 20% crushed glass powder, decrease in the targeted strength at the end of 28 days was found to be ranging between 3.0%and 8.6%. The slump value was found to be decreasing in the case of crushed brick powder, while it was found increasing substantially in the case of glass of glass powder. A combination of both alternatives i.e., brick powder (20%) and glass powder (15%) were also studied and it was found that the compressive strength at the end of 28 days for M20 grade of concrete is 96.13%. Keywords: Glass powder, brick powder, workability, fine aggregate; ASR (Alkali-Silica Reaction); Compressive strength

scholarly journals Crushed Bricks: Demolition Waste as a Sustainable Raw Material for Geopolymers

2021 ◽  
Vol 13 (14) ◽  
pp. 7572
Author(s):  
Gigliola D’Angelo ◽  
Marina Fumo ◽  
Mercedes del Rio Merino ◽  
Ilaria Capasso ◽  
Assunta Campanile ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Building Materials ◽  
Mechanical Performance ◽  
Raw Materials ◽  
Construction Material ◽  
Raw Material ◽  
The European Union ◽  
Total Energy Consumption ◽  
Demolition Waste ◽  
Crushed Brick

Demolition activity plays an important role in the total energy consumption of the construction industry in the European Union. The indiscriminate use of non-renewable raw materials, energy consumption, and unsustainable design has led to a redefinition of the criteria to ensure environmental protection. This article introduces an experimental plan that determines the viability of a new type of construction material, obtained from crushed brick waste, to be introduced into the construction market. The potential of crushed brick waste as a raw material in the production of building precast products, obtained by curing a geopolymeric blend at 60 °C for 3 days, has been exploited. Geopolymers represent an important alternative in reducing emissions and energy consumption, whilst, at the same time, achieving a considerable mechanical performance. The results obtained from this study show that the geopolymers produced from crushed brick were characterized by good properties in terms of open porosity, water absorption, mechanical strength, and surface resistance values when compared to building materials produced using traditional technologies.

scholarly journals Clay-Based Products Sustainable Development: Some Applications

2021 ◽  
Vol 13 (3) ◽  
pp. 1364
Author(s):  
Michele La Noce ◽  
Alessandro Lo Faro ◽  
Gaetano Sciuto
Keyword(s):  
Sustainable Development ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Elastic Modulus ◽  
Basalt Fibers ◽  
Future Studies ◽  
Clay Bricks ◽  
Brick Powder ◽  
Alkaline Resistance ◽  
Raw Earth

Clay has a low environmental impact and can develop into many different products. The research presents two different case studies. In the first, the clay is the binder of raw earth doughs in order to produce clay-bricks. We investigate the effects of natural fibrous reinforcements (rice straws and basalt fibers) in four different mixtures. From the comparison with a mix without reinforcements, it is possible to affirm that the 0.40% of basalt fibers reduce the shrinkage by about 25% and increase the compressive strength by about 30%. Future studies will focus on identifying the fibrous effects on tensile strength and elastic modulus, as well as the optimal percentage of fibers. In the second study, the clay, in form of brick powder (“cocciopesto”), gives high alkaline resistance and breathability performance, as well as rendering and color to the plaster. The latter does not have artificial additives. The plaster respects the cultural instance of the original building. The research underlines how the use of a local (and traditional) material such as clay can be a promoter of sustainability in the contemporary building sector. Future studies must investigate further possible uses of clay as well as a proper regulatory framework.

scholarly journals Relation between Density and Compressive Strength of Foamed Concrete

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2967
Author(s):  
Rokiah Othman ◽  
Ramadhansyah Putra Jaya ◽  
Khairunisa Muthusamy ◽  
MohdArif Sulaiman ◽  
Youventharan Duraisamy ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Building Materials ◽  
Bleaching Earth ◽  
Concrete Specimen ◽  
Control Specimen ◽  
Dilution Ratio ◽  
Sustainable Building ◽  
Cement Ratio ◽  
Foamed Concrete ◽  
Partial Cement Replacement

This study aims to obtain the relationship between density and compressive strength of foamed concrete. Foamed concrete is a preferred building material due to the low density of its concrete. In foamed concrete, the compressive strength reduces with decreasing density. Generally, a denser foamed concrete produces higher compressive strength and lower volume of voids. In the present study, the tests were carried out in stages in order to investigate the effect of sand–cement ratio, water to cement ratio, foam dosage, and dilution ratio on workability, density, and compressive strength of the control foamed concrete specimen. Next, the test obtained the optimum content of processed spent bleaching earth (PSBE) as partial cement replacement in the foamed concrete. Based on the experimental results, the use of 1:1.5 cement to sand ratio for the mortar mix specified the best performance for density, workability, and 28-day compressive strength. Increasing the sand to cement ratio increased the density and compressive strength of the mortar specimen. In addition, in the production of control foamed concrete, increasing the foam dosage reduced the density and compressive strength of the control specimen. Similarly with the dilution ratio, the compressive strength of the control foamed concrete decreased with an increasing dilution ratio. The employment of PSBE significantly influenced the density and compressive strength of the foamed concrete. An increase in the percentage of PSBE reduced the density of the foamed concrete. The compressive strength of the foamed concrete that incorporated PSBE increased with increasing PSBE content up to 30% PSBE. In conclusion, the compressive strength of foamed concrete depends on its density. It was revealed that the use of 30% PSBE as a replacement for cement meets the desired density of 1600 kg/m3, with stability and consistency in workability, and it increases the compressive strength dramatically from 10 to 23 MPa as compared to the control specimen. Thus, it demonstrated that the positive effect of incorporation of PSBE in foamed concrete is linked to the pozzolanic effect whereby more calcium silicate hydrate (CSH) produces denser foamed concrete, which leads to higher strength, and it is less pore connected. In addition, the regression analysis shows strong correlation between density and compressive strength of the foamed concrete due to the R2 being closer to one. Thus, production of foamed concrete incorporating 30% PSBE might have potential for sustainable building materials.

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