This study investigated the influence of different curing conditions on compressive strength (CS) alkali activated concrete (AAC) specimens at ages 2, 28, and 90 days for structural utilization standardization process AAC instead OPC concrete. For this aim, 100% slag (S100), 75% 25% fly ash (S75FA25), 50% based (S50FA50) were produced. Based oven-curing (O), water-curing (W), ambient-curing (A)...

This paper presents 186 groups compressive strength tests data of concrete with manufactured sand (MSC) in different curing age and 262 groups compressive strength tests data of MSC at 28 days collected from authors' experiments and other researches in China. Further interpretation and discussion were described in this issues.

Aquaculture is among the oldest occupations of human being. Over the past quarter of century, the aquaculture industry has grown rapidly. The effect of water containing sodium sulfate on long term compressive strength of concrete of fishing ponds and channels is investigated in this paper. Aim of this paper was to analyze the strength of concrete channels and of aquaculture which are in direct ...

reactive powder concrete (rpc) is an ultra high performance concrete which has superior mechanical and physical properties. the rpc is composed of cement and very fine powders such as crushed quartz (100–600 μm) and silica fume with very low water/binder ratio (w/b) (less than 0.20) and super plasticizer (sp). the rpc has a very high compressive and tensile strength with better durability prope...

Aquaculture is among the oldest occupations of human being. Over the past quarter of century, the aquaculture industry has grown rapidly. The effect of water containing sodium sulfate on long term compressive strength of concrete of fishing ponds and channels is investigated in this paper. Aim of this paper was to analyze the strength of concrete channels and of aquaculture which are in direct ...

This study investigated the properties of fine recycled aggregates (FRA), with a view to enhancing their for structural concrete applications. The explored several approaches including mixing; curing; systematic screening FRA particles below 1.18 mm reduce adhered cement paste (ACP) content; and use fly ash as 30% replacement modify microstructure concrete. To test these approaches, two series ...

An investigation on the effect of sisal fiber partially replaced cement with Groundnut Shell Ash in Concrete was carried out. Sisal 3.5cm length which forms 1% mix by weight groundnut shell ash as a partial replacement for used preparing concrete specimen. Compressive strength test out using 0%, 5%, 10%, 15%, 20%, 25% and 30% at different curing ages 7, 14, 21 28 days. It observed that 7 14days...

We present a proof-of-principle study about the use of a sensor for the nondestructive monitoring of strength development in hydrating concrete. The nondestructive evaluation technique is based on the propagation of highly nonlinear solitary waves (HNSWs), which are non-dispersive mechanical waves that can form and travel in highly nonlinear systems, such as one-dimensional particle chains. A b...

Various papers based on high performance concrete (HPC) and their behaviour were studied. HPC’s containing different mineral as well as chemical admixtures exhibits different properties in fresh as well as hardened states. Several factors determine these properties like: type of mineral as well as chemical admixture, type of aggregates, water-cement ratio, curing method etc. Each paper takes in...