tailieunhanh - Assessment of mortar’s properties using unground rice husk ash as fine aggregate

This study investigates the application of unground rice husk ash (URHA) as fine aggregate in mortar. Mortar samples, which typically have 0-50% URHA as the total aggregate volume, is prepared to achieve the green development of construction material industry. | ISSN 1859-1531 - TẠP CHÍ KHOA HỌC VÀ CÔNG NGHỆ ĐẠI HỌC ĐÀ NẴNG, VOL. 17, NO. , 2019 5 ASSESSMENT OF MORTAR’S PROPERTIES USING UNGROUND RICE HUSK ASH AS FINE AGGREGATE ĐÁNH GIÁ CÁC ĐẶC TÍNH CỦA VỮA SỬ DỤNG TRO TRẤU THÔ NHƯ MỘT THÀNH PHẦN CỐT LIỆU NHỎ Vu-An Tran1, Ngoc-Duy Do1, Duy-Hai Vo2 1 Can Tho University;tranvuan@, dongocduy29@ 2 The University of Danang, University of Technology and Education; duyhai88@ Abstract - This study investigates the application of unground rice husk ash (URHA) as fine aggregate in mortar. Mortar samples, which typically have 0-50% URHA as the total aggregate volume, is prepared to achieve the green development of construction material industry. Mixtures are designed in accordance with waterto-binder (W/B) ratios of and aggregate-to-binder (A/B) ratios of . A number of indicators for assessment of influence of URHA on mortar are conducted by determination of bulk density, water absorption, length change, compressive and flexural strength. Result shows that compressive strength rises with increases in the percentage of RHA up to 30% replacement. Addition of URHA significantly decreases density but slightly increases water absorption. The analysis results indicate that the utilization of URHA has positively affects the producing green mortar in the future and URHA can be used for low-medium cost material. Tóm tắt - Nghiên cứu này nhằm để nghiên cứu ứng dụng của tro trấu thô (URHA) như cốt liệu nhỏ cho sản xuất vữa. Những mẫu vữa với hàm lượng tro trấu thô là 10, 20, 30, 40 và 50% được sản xuất hướng tới vật liệu xanh. Hỗn hợp được thiết kế với tỷ lệ giữa nước và chất kết dính (W / B) là 0,5 và tỷ lệ cốt liệu và chất kết dính là 2,6. Một số phương pháp đánh giá mức độ ảnh hưởng của URHA trên vữa được tiến hành bằng cách xác định khối lượng thể tích, độ hút nước, thay đổi chiều dài, cường độ chịu nén và uốn. Kết quả đã được tìm thấy rằng cường độ chịu nén của vữa tăng lên với 30% sự thay thế URHA. .

• Kiến trúc - Xây dựng
• Unground rice husk ash
• Green mortar
• Low medium cost material
• Water absorption
• Compressive strength
• Engineering properties
• Unfired building bricks
• Produced using URHA FA cement blends
• URHA FA cement blends
• The effect of joint thickness
• Other factors on the compressive strength
• The compressive strength of brickwork
• Brickwork is developed quantitatively
• Four brick prisms declines
• Vietnam Journal of Mechanics
• Manufacturing dry mixed cement mortar
• High compressive strength
• High flexural strength
• Low shrinkage and high watertightness for restoration
• Damaged hydraulic structures in Vietnam
• Effect of the high temperatures
• High temperatures on the microstructure
• High strength fibre concretes
• Impact of the high temperatures
• Ordinary Portland cement
• Fly ash
• Concrete mass
• Compressive strengthdevelopment
• Cement replacement
• Strength development
• Wood ash blended cement
• Soft computing models
• Predict strength parameters
• High strength mortar
• Ground granulated blast furnace slag
• Flexural strength
• Rapid chloride ion penetration
• Ultrasonic pulse velocity
• tiêu chuẩn xây dựng
• standard
• tiêu chí kỹ thuật
• specification
• vật liệu xây dựng
• testing
• thí nghiệm xây dựng
• C109
• C109M
• compressive
• strength
• bền nén
• Rapid prototyping
• Resilient back propagation algorithm
• Swarm intelligence
• Compressive strength improvement
• FDM process
• Concrete compressive strength
• Initial setting time
• Composition of initial materials
• Analysis of variance
• Genetic algorithm
• An Khanh TPP
• Bottom ash
• Cao Ngan TPP
• Replacement materials
• Power plants to replace natural sand
• Replacement material
• Extreme learning machine
• Artificial neural network
• Multilayer perceptron
• Support vector machine
• Navie Bayes
• Decision Tree
• Construction material
• Granulate blast furnace slag
• Hydration reaction
• Unconfined compressive strength
• Alternative material
• High strength concrete
• ACI method
• DMDA method
• Design for high strength concrete
• Environmental advances
• Husk ash incorporated high
• Strength self compacting concrete
• Environmental impact assessments
• Polymer bonded explosive
• Hexogen and fluoroelastomers
• Polymer bonded explosives based
• Explosive characteristics
• Dented stringer stiffened cylinder
• Residual strength
• Tension leg platforms
• Axial compression
• Residual strength formulation
• Khối lượng bê tông
• Cường độ chịu nén
• Bond strength
• FRP to concrete
• Gaussian process regression
• FRP thickness
• Granulated blast furnace slag
• Concrete mixture
• Bulk specific gravity
• Soft soil
• Shear strength
• Direct shear test
• Experimental study
• Underground construction concrete
• Mechanical properties
• Fiber reinforced plastic
• Tensile strength
• ILSS properties
• Failure modes
• Interlocking concrete brick
• Waste incineration bottom ash
• Visible defect
• Bending strength
• Surface abrasion