Concrete's drawback is its low tensile strength and heavy weight, which may exceed 2400 kg/m3. The significance of self-weight in building construction essential, particularly when dealing with seismic loads. larger the inertial force from weight structure itself, greater therefore lightweight concrete can provide an opportunity to lower own a smaller unit 1850 Fly ash was employed as substitut...

Enhancing strength performance while reducing cement consumption for soil stabilization is the key to improving economic benefits of engineering construction projects like retaining structures underground engineering, subgrade bases, and foundation reinforcement. This study employed metakaolin as additive realize these two aims. A series compression microstructural observation tests on cement- ...

Objective of the work: This study focused on investigations pozzolanic activity pumice under different curing temperatures and durations. 
 Materials Method: Pumice powder, standard sand slaked lime were used as materials in this study. Within scope study, only one mixture design was following TS 25. In total, 9 regimes such three heat cures at 55˚C, 75˚C, 90˚C durations 7, 14, 28 days for...

The soils of the central Oregon pumice plateau are relatively young and infertile, yet support an array of plant diversity and growth in the region’s pine forests. Whether these coarsetextured, pumice and ash soils are resilient to forest disturbance is not well understood. We present results from a long-term experiment that examined changes in soil quality in response to combinations of thinni...

to study the mechanical and thermal parameters effective on quality and quantity of olive oil towards an extraction of highly pure oil, the velocity in rps of crushing rollers, at two levels of 6 and 12 (rps) along with the temperature of the mixing unit at three levels of 30, 45 and 60°c were taken into account. data, obtaind through a factorial experiment of randomized complete block design (...

Concrete is probably the most extensively used construction material in the world. However, environmental concerns regarding rapid consumption of natural resources and CO2 emission during cement manufacturing process have brought pressure to reduce cement consumption by the use of cement replacement materials (CRMs). The utilization of calcined clay (metakaolin) and silica fume in concrete has ...

The effect of organic phenol on the compressive and flexural strength of a metakaolin based geopolymer is studied. It was found that 12 wt% phenol resins can increase the compressive and flexural strength by 30% and 65% respectively. In addition, the reinforcing effect of phenol resin is higher in Na-PS and Na-PSS type geopolymers rather than Na-PSDS. Two distinct endothermic peaks were detecte...