Influence of thixotropy determined by different test methods on formwork pressure of self-consolidating concrete

Stability of Self-Consolidating Concrete Containing Different Viscosity Modifiers

The main objective of this paper is to assess the effect of different viscosity-enhancing admixture (VEA) types and concentrations on deformability and stability of self-consolidating concrete (SCC). Two polysaccharide-based VEAs, one cellulose-based VEA, and a modified-startch VEA are used in this investigation. Regardless of polymer type, results showed that the incorporation of VEA leads to ...

Influence of Controlled Permeability Formwork on the Permeability of Concrete

Corrosion of steel reinforcement related to the intrusion of chloride ion is still the main threats to the durability of concrete structure, especially in marine environment. For the purpose of delaying the Cl− concentration at the surface of steel reinforcement reaching the critical value leading to initial corrosion, the permeability of concrete is usually improved by optimizing the concrete ...

the impact of cooperative questioning vs. self-questioning methods on the reading comperhension ability of iranian pre- intermediate efl learners

این تحقیق به بررسی تاثیر استفاده از روش پرسش مشارکتی در مقابل روش خود پرسشی بر توانایی خواندن زبان آموزان سطح پیش متوسطه ایرانی می پردازد. در این تحقیق تلاش شده تا متوجه شویم که آیا این استراتژی ها تاثیری بر روی توانایی خواندن زبان آموزان دارد یا نه و کدام یک تاثیر بیشتری دارد. بر این اساس 98 زبان آموز انتخاب و از طریق تست مهارتی ماک تافل همگن شدند. سپس محقق آنها را به سه گروه تقسیم کرد که این ...

State-of-the-Art Review of Form Pressure Exerted by Self-Consolidating Concrete Executive Summary

Autogenous Shrinkage of Prestressed Self-Consolidating Concrete

Shrinkage can be critical factor for the design of structural members due to the length changes by the timedependent deformation. Given the high fluidity and different mixture proportions of SCC, the shrinkage of such concrete can differ from those of conventional concrete or HPC of normal consistency. Proper estimate of autogenous shrinkage of self-consolidating concrete (SCC) can provide engi...