Influence of vermiculite and sintered fly ash in robustness and hardened properties of light weight self-compacting concrete
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The performance of Light Weight Self-Compacting Concrete (LWSCC) incorporated with Sintered Fly Ash and Vermiculiteare investigated in this study. The robustness and hardened properties of the LWSCC is investigated at diverse proportioningrates where Cement, Fine Aggregate and Coarse Aggregate are replaced with Fly Ash (FA) (25%), Vermiculite (1-9%) andSintered Fly Ash (SFA) (10-50%) respectively. The workability properties such as Filling ability, Passing ability, viscosity andthe mechanical properties such as density, compressive strength, tensile strength, flexural strength, ultrasonic pulse velocity,acid and sulphate resistance were studied. The percentage loss in weight and loss in compressive strength due to Acid attackand Sulphate attack at the age of 28 days of LWSCC were observed by immersing in 10% of HNO3, magnesium sulphate andsodium sulphate solutions. Vermiculite with SFA considerably boosted the workability and mechanical properties of LWSCCmixes. The presence of lightweight aggregates reduced the strength loss caused by sodium and magnesium sulphate ions. Acombination of 5% of Vermiculite and 30% of SFA resulted with the best robustness and hardened property of concrete
Abstract
The performance of Light Weight Self-Compacting Concrete (LWSCC) incorporated with Sintered Fly Ash and Vermiculiteare investigated in this study. The robustness and hardened properties of the LWSCC is investigated at diverse proportioningrates where Cement, Fine Aggregate and Coarse Aggregate are replaced with Fly Ash (FA) (25%), Vermiculite (1-9%) andSintered Fly Ash (SFA) (10-50%) respectively. The workability properties such as Filling ability, Passing ability, viscosity andthe mechanical properties such as density, compressive strength, tensile strength, flexural strength, ultrasonic pulse velocity,acid and sulphate resistance were studied. The percentage loss in weight and loss in compressive strength due to Acid attackand Sulphate attack at the age of 28 days of LWSCC were observed by immersing in 10% of HNO3, magnesium sulphate andsodium sulphate solutions. Vermiculite with SFA considerably boosted the workability and mechanical properties of LWSCCmixes. The presence of lightweight aggregates reduced the strength loss caused by sodium and magnesium sulphate ions. Acombination of 5% of Vermiculite and 30% of SFA resulted with the best robustness and hardened property of concrete
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