Curing Temperatures on the Compressive Strength and Drying Shrinkage of Alkali-Activated Fly Ash Mortars

Comparative Study of Alkali-Activated Fly Ash Manufactured Under Pulsed Microwave Curing and Thermal Oven Curing

This paper compares the alkali-activated fly ash (AAFA) manufactured with thermal oven curing and pulsed microwave curing methods. Fly ash activated by 8M NaOH solution at a liquid to solid ratio of 0.3 was cured by thermal oven at 85°C and domestic microwave oven, respectively. Apart from compressive strength test, the temperature profiles of AAFA samples were captured by thermal camera. React...

PROPERTIES OF ALKALI-ACTIVATED FLY ASH CONCRETE BLENDED WITH SLAG

Compressive Strength and Heavy Metal Leaching Behavior of Mortars Containing Cement-fly Ash and Spent Catalyst

การวิจัยนี้มีวัตถุประสงคเพ่ือศึกษาความเปนไปไดในการใชคาตาลิสตท่ีใชแลวจากโรงกลั่นนํ้ ามันเพ่ือเปนวัสดุในงาน คอนกรีตคาตาลิสตจะนํ ามาใชแทนทรายเพื่อทํ าเปนมอรตาร นอกจากนี้ยังใชเถาถานหินแทนที่ปูนซีเมนตปอรดแลนด ประเภทที่ 1 ในปริมาณรอยละ 20 โดยนํ้ าหนัก โดยใชคาตาลิสตมาแทนที่ทรายเชนกัน การวิจัยครั้งนี้ยังไดนํ าเม็ดคาตาลิสต มาบดใหละเอียดเพื่อใชแทนที่ปูนซีเมนตปอรตแลนดเหมือนเถาถานหิน ทํ าการทด...

Benefits of Sealed-Curing on Compressive Strength of Fly Ash-Based Geopolymers

There is no standardized procedure for producing geopolymers; therefore, many researchers develop their own procedures for mixing and curing to achieve good workability and strength development. The curing scheme adopted is important in achieving maximum performance of resultant geopolymers. In this study, we evaluated the impact of sealed and unsealed curing on mechanical strength of geopolyme...

Influence of High Temperatures on Flexural Strength of Foamed Concrete Containing Fly Ash and Polypropylene Fiber

In this study, the elevated temperature flexural strengths of lightweight foamed concrete (LFC) containing fly ash (FA) and polypropylene fiber (PF) was investigated experimentally and statistically. The variables included were the temperature degrees (in a range of 20 to 600°C), LFC densities of 600, 800, 1000, 1200 and 1400 kg/m3 and additive content. Two mixes were made by replacing 15% and ...