scholarly journals Properties of Cement Brick with Partial Replacement of Sand and Cement with Oil Palm Empty Fruit Bunches and Silica Fume

2019 ◽  
Vol 5 (3) ◽  
pp. 289 ◽  
Author(s):  
Jen Hua Ling ◽  
Yong Tat Lim ◽  
Wen Kam Leong ◽  
Euniza Jusli ◽  
How Teck Sia
Keyword(s):  
Water Absorption ◽  
Construction Industry ◽  
Silica Fume ◽  
Oil Palm ◽  
Partial Replacement ◽  
Absorption Property ◽  
Empty Fruit Bunches ◽  
Negative Implication ◽  
Water Absorption Property ◽  
By Products

Oil palm empty fruit bunches (EFB) and silica fume (SF) are the by-products of the oil palm plantation and the ferroalloy smelting industries, respectively. Improper disposal of these materials leads to negative implication to the environment. This study was carried out to investigate the potential application of EFB and SF in cement bricks. EFB fibre and SF replaced up to 25% of sand and cement in the mix, respectively, in several groups of specimens that distinguished the normal, EFB-, SF- and EFB-SF-cement bricks. The specimens were tested for the compressive strength, density and water absorption property. The results reveal that SF, at an optimum amount of 10% cement replacement, increased 10% of the strength of the cement brick. EFB fibre reduced the strength and density but increased water absorption property of the cement brick. For application in the construction industry, SF and EFB fibre contents should be kept within 10% and 20% respectively.

scholarly journals Effect of Silica Fume as Partial Replacement of Cement on Compressive Strength of Roller Compacting Concrete

2020 ◽  
Vol 18 (02) ◽  
pp. 145-149
Author(s):  
Israr Ahmed ◽  
Aneel Kumar ◽  
Samar Hussain Rizvi ◽  
Mohsin Ali ◽  
Sabir Ali
Keyword(s):  
Compressive Strength ◽  
Construction Industry ◽  
Silica Fume ◽  
Industrial Wastes ◽  
Partial Replacement ◽  
Aquatic Life ◽  
Cement Replacement ◽  
By Products ◽  
Curing Age

Silica fume is an industrial by-product that can be used as a partial replacement of cement to enhance the strength related properties of roller compacting concrete. In past, industrial wastes were used to dump on earth, river, and sea that creates a hazardous environment for aquatic life as well as for humans. Nowadays, the use of industrial by-products as cement replacement is popular in the construction industry because it protects the environment from hazards. In this research, the effect of silica fume as partial replacement of sulphate resisting cement is investigated on the compressive strength of roller compacting concrete. Total four types of mix proportions were casted using concert mix ratio as 1:2:4 to investigate the compressive strength of roller compacting concrete at 7 and 28 days of curing age. The sulphate resisting cement was partially replaced with silica fume by 0%, 5%, 10%, and 15% by weight of cement. The zero slump was maintained in all mixes. It was observed that the mix proportions containing 5% and 15% silica fume replacement showed maximum and minimum compressive strength of roller compacting concrete respectively.

APPLICATION OF OIL PALM EMPTY FRUIT BUNCH FIBERS IN STRENGTH IMPROVEMENT AS A FIBER REINFORCED CONCRETE

2017 ◽  
Vol 25 (3) ◽  
pp. 161-170
Author(s):  
Henny Lydiasari ◽  
Ari Yusman Manalu ◽  
Rahmi Karolina
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Crack Length ◽  
Oil Palm ◽  
Fiber Reinforced Concrete ◽  
Structural Concrete ◽  
Empty Fruit Bunches ◽  
Construction Products ◽  
By Products ◽  
Strength Improvement

The potency of oil palm empty fruit bunches (OPEFB) fibers as one of the by-products of processing oil palm is increasing significantly so that proper management is needed in reducing environmental impact. One of the utilization of OPEFB fibers is as a substitution material in construction which usually the material is derived from non-renewable mining materials so that the number is increasingly limited. Therefore, it is necessary to study to know the performance of OPEFB fiber in making construction products especially concrete. In this case, the experiment was conducted using experimental method with variation of fiber addition by 0%, 10%, 15%, 20%, 25%, and 30%. Each specimen was tested by weight, slump value, compressive strength, tensile strength, elasticity and crack length. As the results, the variation of fibers addition by 10%, decrease of slump value is 7%, concrete weight is 3% and crack length is 8% while increase of the compressive strength is 2.7% and the modulus of elasticity is 33.3% but its tensile strength decreased insignificantly by 0.05% . Furthermore, the addition of fibers above 10% to 30% decreased compressive strength is still below 10% and tensile strength below 2% while the weight of concrete, slump value and crack length decreased. Therefore, the addition of 10% can replace the performance of concrete without fiber but the addition of above 10% can still be used on non-structural concrete.

Plasma Activated Acrylamide Initiated Polymerization of Acrylamide

2011 ◽  
Vol 391-392 ◽  
pp. 1168-1172
Author(s):  
Xiao Chun Fang ◽  
Sheng Gao Wang ◽  
Ming Yang Wang ◽  
Kai Wei Xu
Keyword(s):  
Molecular Weight ◽  
Water Absorption ◽  
Plasma Discharge ◽  
Polymerization Temperature ◽  
Absorption Property ◽  
Discharge Time ◽  
Water As Solvent ◽  
Water Absorption Property

A study was made on plasma-initiated polymerization of polyacrylamide (PAM) with high superabsorbent property. The viscosity-averaged molecular weight Mη of this PAM was 6.2×106g/mol in the measurement of viscosity by using water as solvent. Its conversion and water absorption calculated are 70% and 300g/g respectively. The effects of plasma discharge time, polymerization temperature and duration on the conversion and the molecular weight of the products were also investigated. The results of this study suggested that the method of plasma initiated polymerization could greatly enhance the molecular weight and water absorption property of the polymer.

scholarly journals UTILIZATION OF PALM OIL SHELL WASTE AS ALTERNATIVE ADDITIVES IN MANUFACTURING PAVING BLOCK

2020 ◽  
Vol 8 (1) ◽  
pp. 30-35
Author(s):  
Wiratno ◽  
Samuel Layang ◽  
Wandra Prima Pera
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Palm Oil ◽  
Oil Palm ◽  
Active Charcoal ◽  
Crude Palm Oil ◽  
Empty Fruit Bunches ◽  
Fine Aggregates ◽  
Shell Waste ◽  
Pharmaceutical Industries

Palm shells are one of the wastes produced from the processing of crude palm oil in addition to empty fruit bunches and coir which account for 60% of oil production. Palm oil shell waste is widely used as active charcoal in the oil, rubber, sugar, and pharmaceutical industries. The potential of palm oil shell waste in Indonesia is very large considering the area of oil palm plantations which continues to increase every year. This study aims to determine the percentage of the addition of palm oil shell waste in the manufacture of paving blocks that provide optimum compressive strength and water absorption values from several variations of the addition of palm oil shell waste that replaces some of the fine aggregates. The study was carried out experimentally in a laboratory using a boxed specimen with a length of 20 cm, a width of 10 cm, a height of 6 cm by 40 pieces. The mixture uses a ratio of 1 cement and 5 sand with fas 0.3. Treatment of test specimens by immersion in water for further testing of compressive strength and absorption at the age of 28 days. Based on testing of the compressive strength of paving blocks with a percentage of 0%, 5%, 10%, 15% are respectively 8.08 MPa, 7.18 MPa, 6.46 MPa, 5.94 MPa. The value of paving block water absorption with a percentage of 0%, 5%, 10%, 15% are respectively 9.88%, 10.25%, 12.27%, 12.44%.

Experimental Study on Manufacturing Environmental Protection Baking Free Brick of Waste Concrete

2014 ◽  
Vol 584-586 ◽  
pp. 1188-1191
Author(s):  
Peng Fei Li ◽  
Xian Chun Zheng ◽  
Ling Feng Ji
Keyword(s):  
Experimental Study ◽  
Water Absorption ◽  
Environmental Protection ◽  
Absorption Property ◽  
Paper Test ◽  
Waste Concrete ◽  
Maintenance Time ◽  
The Matrix ◽  
Water Absorption Property ◽  
Material Studies

This paper test the strength intensity,water absorption property of 10 baking—free bricks using the matrix cementing component in waster concrete as the material,studies the effect of m~ing ratio and maintenance time on pmpe~y to get the best mKing ratio of this kind of brick.It also analyzes the intension resources of this brick.

scholarly journals Effects of Adding Silica Fume and Empty Fruit Bunch to the Mix of Cement Brick

2021 ◽  
Vol 3 (1) ◽  
pp. 19-30
Author(s):  
Jen Ling ◽  
Yong Lim ◽  
Wen Leong ◽  
How Sia
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Silica Fume ◽  
Palm Oil ◽  
Absorption Capacity ◽  
Water Absorption Capacity ◽  
Empty Fruit Bunch ◽  
Absorption Properties ◽  
Proper Disposal ◽  
By Products

Silica fume (SF) and palm oil empty fruit bunch (EFB) are the by-products of the ferroalloy smelting industry and oil palm plantation, which require proper disposal to minimize the environmental impacts. To consume the by-products, the feasibility of utilizing SF and EFB to fabricate bricks was studied. Limited studies were adopting EFB as the natural fibres in bricks and its pro-portion barely exceeded 5%. With the enhancement of SF, EFB content in the mix could be increased. In this study, 336 specimens were produced in the cement-to-sand (c/s) ratios of 1:2.5 and 1:3, where SF replaced 10% to 15% cement in the mix by weight while EFB substituted 20% to 25% sand by volume. The specimens were tested for the compressive strength, density, and water absorption properties. SF was found to strengthen the mix, while EFB reduced the compressive strength and increased the water absorption capacity of the brick. Based on the evaluation results, the mix containing less than 10% SF and 20% EFB content was applicable for non-load-bearing brick.

scholarly journals Absorption Characteristics of Lightweight Concrete Containing Densified Polystyrene

2017 ◽  
Vol 3 (8) ◽  
pp. 594-609 ◽  
Author(s):  
Bengin Herki
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Construction Industry ◽  
Lightweight Concrete ◽  
Expanded Polystyrene ◽  
Partial Replacement ◽  
The Novel ◽  
Total Water ◽  
Capillary Water ◽  
Significant Difference

The environmental impacts of the construction industry can be minimised through using waste and recycled materials to replace natural resources. Results are presented of an experimental study concerning capillary transport of water in concrete incorporating densified expanded polystyrene (EPS) as a novel aggregate. A new environmentally friendly technique of densifying was used to improve the resistance to segregation of EPS beads in concrete. Twelve concrete mixes with three different water/cement ratios of 0.6, 0.8 and 1.0 with varying novel aggregate content ratios of 0, 30, 60 and 100% as partial replacement for natural aggregate by equivalent volume were prepared and tested. Total absorption, absorption by capillary action, and compressive strength was determined for the various concrete mixes at different curing times. The results indicated that there is an increase in total water absorption (WA) and capillary water absorption (CWA) and a decrease in compressive strength with increasing amounts of the novel aggregate in concrete. However, there is no significant difference between the CWA of control and concretes containing lower replacement level.

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