Recycled concrete aggregate containing rice husk
Modulus of elasticity for hardened concrete) containing rice husk ash is carried out the results show that the strength of concrete grade m15 and m20 is maximum when 125% of cement content is replaced with rice husk. Recycled aggregate content, rice-husk ash content and water-cement ratio, respectively the effects of these variables on the compressive strength of concrete are presented and discussed keywords: recycled aggregate, concrete, water-cement ratio, rice-husk ash. For this, recycled aggregate concrete mixes containing 0%, 5%, 10%, 15%, 20%, 25% ,30% and 35% rice husk ash has been designed in accordance to the procedures of bureau of indian standards.
Ga led to a decrease of compressive strength in concrete (with respect to that of the reference concrete) up to 50% due to the weakness of the cement paste / recycled aggregate interface to compensate for this negative effect, a reduction of w/c for the ga concretes was necessary. Concrete debris is typically reclaimed as recycled aggregate (rca) by recycling concrete, valuable landfill space and natural resources are preserved this concept is part of the larger “sustainable construction” philosophy that seeks to minimize waste generation and encourage recycling in order to prevent adverse long-term environmental . A concrete mix consisting of 30% recycled concrete aggregates and 15% fly ash, rice husk ash or bagasse ash exhibits improved properties than those for concrete with recycled concrete aggregates only.
The recommendations proposed in this paper will help improve planning and implementation of recycling efforts during debris removal missions in the future the paper by s talukdar et al investigated the use of waste materials, such as crushed glass, ground tire rubber, and recycled aggregate, in concrete. The analysis of experimental results depicts that the behaviour of concrete substantially is influenced by the incorporation of coarse recycled concrete aggregates and rice husk ash in concrete however, concrete mixes containing 100% coarse recycled concrete aggregates and 10–15% rice husk ash satisfies the design requirements for . However, the use of ground rice husk ash at 20% by weight of binder in recycled aggregate concrete gave higher compressive strength than the one without ground rice husk ash at 60 days in addition, the use of 20 to 50% of ground rice husk ash in recycled aggregate concrete could increase chloride resistance of the recycled aggregate concrete. Recycled concrete aggregate portland cement based concrete also suffers from high water absorption and thus up to 160% higher shrinkage and creep concrete made with natural aggregates [6-9,24].
Rice husk ash and slipozz  recycled or crushed returned concrete aggregates that are the physical properties of fresh and hardened concrete containing rca . Concrete containing recycled rice husk ash and metakaolin can be used as of recycled concrete aggregate concrete depending with the. Concrete containing recycled concrete aggregate granulated blast furnace slag, rice-husk ash and metakaolin, and the development of recycled concrete aggregate has gained tremendous. Conventional concrete aggregate consists of sand (fine aggregate) and various sizes and shapes of gravel or stones (coarse aggregate) however, there is a growing interest in substituting alternative aggregate materials, largely as a potential use for recycled materials.
Recycled concrete aggregate containing rice husk
For this, recycled aggregate concrete mixes (1 00% recycled coarse aggregate) containing 0%, 5%, 10%, 15%, 20%, 25% ,30% and 35% rice husk ash has been prepared in accordance to the bureau of indian standard procedures the water binder ratio of the concrete is maintained 045 and compressive strength, split and flexural strength has been determined and compared with the result of reference concrete (w ithout recycled coarse aggregates and rha). Rice husk ash (rha) can be used as a highly reactive pozzolanic material to improve the microstructure of the interfacial transition zone (itz) between the cement paste and the aggregate in high-performance concrete. Mechanical properties of brick aggregate concrete containing rice husk ash as a partial replacement of cement properties of concrete made with fresh and recycled .
- Recycled glass concrete: coarse and fine aggregates conventional concrete aggregate consists of sand (fine aggregate) and various sizes and shapes of gravel or stones (coarse aggregate) however, there is a growing interest in substituting alternative aggregate materials, largely as a potential use for recycled materials.
- Laboratory investigation of concrete pavements containing fine rap aggregates properties of recycled aggregate concrete made with recycled coarse aggregate .
Tensile strengths of concrete containing rice husk ash from different the concrete cylinders were crushed to obtain between the aggregate and paste based on the. Mechanical properties of brick aggregate concrete containing rice husk ash as a coarse aggregate the bricks were crushed manually to make coarse aggregate and. Evaluation of industrial by-products as sustainable pozzolanic materials in recycled aggregate concrete rice husk ash (rha), palm oil fuel ash (pofa . Aggregate up to the level of 50% in replacement of crushed basalt aggregates [1-3] other promising by-product is the rice husk ash (rha) formed in the generation of energy using rice husk as biomass.