If the shape of aggregates used in concrete is not rounded or cubical it will decrease the strength of concrete due to improper interlocking of aggregates in concrete. If the aggregates are elongated (or) flaky the strength of concrete will be seriously affected and concrete will become permeable. Transconcrete minutely monitors that the 20 mm & 10mm aggregates for elongation and flakiness and their quantity is restricted within the domain of BIS standards to achieve consistent and standardized quality.

The effortlessness of placing, compacting and finishing of concrete in preferred conduct is referred as workability. Generally, slump is considered the parameter of measuring the workability. More the slump, higher the workability. Low slump leads to difficulties in placing of concrete. Therefore the workability based is judged in accordance to site conditions.

How will you ensure that the ingredients of concrete are proper?

The correct balance of aggregates, namely, sand, water, cement, is very vital and is ensured by experience in volumetric proportion. At Transconcrete, apt mix is designed using scientific manner and the proportions are set by weighment. Machine mixing is applied for mixing the aggregates with the help of efficient pan mixers. The number of rotations of shaft is very crucial and is closely administered by the technical team. This process is important as inappropriate mixing will lead to a poor quality product. With the help of out technically advanced batching and mixing plants we closely check the quality of the produce. The guidelines of raw mix design are saved in the computer and the quantification of raw materials weighed automatically as per the design mix. The water-cement ratio for a particular mix is fixed as per the design, which is kept invariable throughout and consequently reliability in quality is sustained.

The water-cement ratio is fundamental criterion for the strength and sturdiness of the concrete. The ratio is inversely proportional to the robustness of the produce. If the ratio is more, the strength is less and vice-versa. The w/c ratio at Transconcrete is predesigned through scientific mix design as per BIS standards.

Factors Low w/c ratio High w/c ratio
Compressive strength High Low
Water permeability Low High
Shrinkage Low High
Water Bleeding Low High

The effect of w/c ratio on compressive strength of concrete is as shown in the table below:

Importance of Water-Cement Ratio:
Water Cement (w/c) 0.40 0.50 0.60 0.70 0.80
Probable Compressive Strength (%) 100 87 70 55 44

What is the importance of mixing in concrete?

To achieve a high quality concrete possessing resilience, cohesiveness and uniformity, it’s very important to use the ingredients of concrete to right measure. Being a quality conscious organization, we ensure our product possesses resilience and stability.

Segregation is nothing but the differentiation of coarse aggregate from cement paste. It emerges due to surfeit of water in concrete and inconsistency of concrete. At Transconcrete, the well designed concrete is pumped from the delivery truck to the site with abet of concrete pumps with vertical and horizontal pipelines. The lithe hose pipe attached at the end of pipe lines makes the process easier at the location therefore resulting in reduction of separation and dragging.

Bleeding is the appearance of water to the surface from freshly placed concrete resulting in deposition of solids to the bottom during compaction. This can be circumvented by proper control of w/c ratio and desired level of compaction.

Lack of consideration towards curing is menace. In regards to roof slabs, quick drying surface leads to plastic to shrinkage cracks. Despite this, if proper curing is not done timely, the top surface dries to such a level that hydration process almost stops at the top surface making it feeble and permeable. Consequently, it is accentuated that curing is the quintessence of good concrete.

Throughout the hydration of cement paste in concrete, heat of hydration is generated. The heat produced dispels from the surface on concrete ensuing to formation of cracks. The cracks so formed are called plastic (or) drying shrinkage cracks. These can be condensed to a great degree by early curing.

Testing is of prime importance to derive the strength of the concrete at 28 days for each desired grade. Normally, the tests pertaining to strength, workability, yield and other similar factors are neglected. We observe the samples of concrete for every batch to ensure high quality standards and delivery of uniform product.