Effect of Superplasticizer and NaOH Molarity on Workability
Results showed that the workability and compressive strength improved with the increase in superplasticizer dosage. An increase in strength and a decrease in workability of these concrete samples were observed with the increase in molarity of NaOH solution from 8M to 14M.
Effect of Superplasticizer and NaOH Molarity on Workability
The research investigates the effects of super plasticizer and molarity of sodium hydroxide alkaline solution on the workability, microstructure and compressive strength of self compacting geopolymer concrete (SCGC).
PHUFRQFUHWH DFRQFUHWHIRUVXVWDLQDEOH HQYLURQPHQW
The current study focused on the impact of various factors such as the effect of superplasticizer, Na-OH molarity (8, 10, 12, 14 and 16M), and curing temperature (30-900C) on different mechanical characteristics such as workability, tensile and compressive strength of GC.
Effect of Superplasticizer and NaOH Molarity on Workability
An increase in strength and a decrease in workability of these concrete samples were observed with the increase in molarity of NaOH solution from 8M to 14M. Improvement of interfacial transition zone (ITZ) and micro structure with the increase of SP and increase of concentration from 8M to 12M were also identified.
Stability of superplasticizer on NaOH activators and
As an important adjustment method, water-reducing admixtures, also called superplasticizer (SP), were used to improve the dispersion and workability of fresh paste. Working with AAM systems, in turn, previous studies showed that the effectiveness of superplasticizer on the workability is controversial.
- Does molarity of NaOH increase the workability of geopolymer concrete?
- The workability results of slump, T 50 cm ,V-funnel, L-Box and J-Ring are presented in Table IV and the results showed that as the molarity of NaOH solution increases the workability of geopolymer concrete decreases. The compressive strength result for 1st, 3rd, 7thand 28thdays of testing are shown in Fig. 6.
- Does molarity increase the strength of a concrete sample?
- Results showed that the workability and compressive strength improved with the increase in superplasticizer dosage. An increase in strength and a decrease in workability of these concrete samples were observed with the increase in molarity of NaOH solution from 8M to 14M.
- Does superplasticizer increase compressive strength of concrete?
- The tests considered for study are, slump test, slump loss, flow table and compressive strength test The results show that for the constant water cement ratio, increase of superplasticizer dose in properties of concrete leads to gain of good workability. Moreover, there is also increase in compressive strength than that of normal concrete mix.
- What are the effects of superplasticizer?
- Effects of superplasticizer are obvious, i.e. to produce concrete with a very high workability or concrete with a very high strength. Mechanism of superplasticizer is through giving the cement particles highly negative charge so that they repel each other due to the same electrostatic charge.
- Does superplasticizer affect workability and properties of self-compacting concrete (SCC)?
- This research examined the effect of superplasticizer on workability and properties of self-compacting concrete (SCC). Three types of superplasticizers Conplast SP 561, Conplast SP 430 and Conplast SP 264 at different percentages (0, 10, 20 and 30%) with the same water cement ratio of 0.3, with M30 grade of concrete.
- What is the effect of superplasticizers on fly ash based geopolymer?
- Effect of superplasticizers on the fly ash based geopolymer directly depends on the type of activator and the SP. Naphthalene based SPs is an effective type for the fly ash based geopolymer activated by only NaOH solution. Modified Polycarboxylates based SP is the most effective type for the fly ash based geopolymer activated by NaOH + Na 2 SiO 3.
