Effects and mechanism of superplasticizers and precursor
The polycarboxylate-based superplasticizers were the most effective type in the case of fly ash based geopolymer activated by NaOH + Na 2 SiO 3 activators. Whereas, in the case of NaOH solution activated slag, naphthalene-based superplasticizers were the most efficient type.
Effects of polycarboxylate superplasticizers with different
As an essential component for the manufacture of concrete, superplasticizers can improve the properties of concrete, including the resistance to corrosive ions [[14], [15], [16]]. Polycarboxylate superplasticizer (PCE) is the latest generation of superplasticizer, which is more effective than traditional superplasticizers [16].
Synthesis and Properties of a Polycarboxylate
Polycarboxylate superplasticizers (PCEs) emerged as one of the most important superplasticizers for concrete due to their superior performance. (1,2) Compared to other products like polycondensates, they fluidize cement even at low water to cement ratios, require relatively low dosages, and exhibit a long slump retention capability. (35) The
The Effect of Various Superplasticizers on Ultra High
The effectiveness of a water reducer is a result of the chemical structure; some variations in polymer based superplasticizers include charge density differentiation, side chain length, main backbone length, degree of backbone polymerization and composition of functional groups.
Effect of polycarboxylate ether-based superplasticizer dosage
Commonly used high range water reducer admixture, the polycarboxylate ether-based (PCE) superplasticizer has been used to investigate its influence on workability and strength of concrete by measuring slump and ultrasonic pulse velocity as well as crushing strength. The cement of grade 43 has been used in this work.
- Does polycarboxylate superplasticizer affect thixotropic properties?
- Ke et al. studied the effect of polycarboxylate superplasticizer on the fluidity, rheology, and thixotropic properties of a low water-to-binder ratio cement-silica mortar slurry, and found that it had obvious dispersion advantages for cementitious materials.
- Do polycarboxylate superplasticizers affect adiabatic temperature increase?
- The effects of the hydration products and micro-morphology were investigated, and the effects of the polycarboxylate superplasticizers on adiabatic temperature increase, early drying shrinkage, and the mechanical properties of concrete were explored. 2. Raw Materials and Test Methods 2.1. Raw Materials
- Are polycarboxylate-based superplasticizers effective?
- Their effectiveness is determined by their interactions between the individual constituents, which include a variety of fine powders. In this research, different investigative methods were employed to study the influence of polycarboxylate-based superplasticizers (PCs) on the performance of UHPC.
- Does Polycarboxylate ether-based superplasticizer affect workability and strength of concrete?
- Commonly used high range water reducer admixture, the polycarboxylate ether-based (PCE) superplasticizer has been used to investigate its influence on workability and strength of concrete by measuring slump and ultrasonic pulse velocity as well as crushing strength. The cement of grade 43 has been used in this work.
- Can polycarboxylate superplasticizer improve cement-fly ash composite cementitious materials and concrete?
- To solve this problem, this paper proposes the method of incorporating polycarboxylate superplasticizer to improve its performance and explore the influence of polycarboxylate superplasticizer on the properties of cement-fly ash composite cementitious materials and concrete.
- Does polycarboxylate superplasticizer reduce hydration heat?
- When the hydration age was 7 d, the addition of superplasticizer reduced the cumulative heat release by about 11.4%, indicating that the addition of the polycarboxylate superplasticizer played a positive role in reducing the hydration heat of the cementitious material. Figure 1.
