Synthesis of lignin-grafted polycarboxylate superplasticizer
It is common that high-performance concrete is highly viscous, which is not conducive to transportation and pumping. In order to reduce the viscosity of fresh high-performance concrete, a lignin-based polycarboxylate superplasticizer (PCE-ACLx) was synthesized through a novel process and the structure was characterized by FTIR, 1 H NMR and GPC.
Synthesis of Comb-Polyurethane-Modified Polycarboxylate at
Polycarboxylate superplasticizer (PCE) has been extensively used in concrete technology since the 1980s (Plank and Bian, 2010). The side chain of PEO is suspended between the Portland cement particles to exert its steric hindrance effect, thereby dispersing Portland cement (Li et al., 2005; Wang, 2009). Compared with other plasticizers, PCE has
Development of lignin-based polycarboxylates as a plasticizer
Plasticizers, such as lignosulfonate (LS) or polycarboxylate ether (PCE), have been used to reduce the amount of added water in cement paste, which is advantageous because water reduces the strength of hardened cement (Plank et al. 2010; Huang et al. 2018).
HV6128 - Institute of Physics
polycarboxylate superplasticizer with high water retention. The performance test results show that the product has high water-reducing ratio and better workability when applied to concrete, which can effectively retain the moisture in concrete and ensure the stability of concrete fluidity. 1. Introduction
Polycarboxylate Superplasticizer (PCE) For Concrete
Polycarboxylate superplasticizer (PCE), also known as polycarboxylate ether superplasticizer, is a new generation of high-performance concrete admixture. It is a water reducing agent with excellent performance that integrates water reduction, slump protection, reinforcement, shrinkage and environmental protection.
- What is a polycarboxylate ether superplasticizer?
- The polycarboxylate ether superplasticizer is an additive commonly used in concrete engineering and has a wide range of applications. The PCE based admixture can significantly reduce the amount of cement and improve the fluidity and pumpability of concrete while ensuring the strength and durability of concrete.
- Can polycarboxylate based superplasticizer improve the crack resistance of concrete?
- The polycarboxylate based superplasticizer can improve the crack resistance of concrete. After adding an appropriate amount of water reducing agent in concrete, the internal structure of the concrete can be improved and the contraction and cracking of concrete can be reduced.
- What is polycarboxylate superplasticizer (PCE)?
- Polycarboxylate Superplasticizer (PCE) is a water-soluble concrete additive used to reduce water to cement ratio without affecting the workability of the mixture. PCE increases protection from slumping, then increases the slump retention since cement loses workability with time. PCE increases the structure’s strength after construction.
- What are the advantages of polycarboxylate superplasticizers?
- From an engineering perspective, Polycarboxylate Superplasticizers offer several critical advantages. Firstly, the significant reduction in water-cement ratio achieved by PCE contributes to higher early and ultimate strength in concrete.
- Does polycarboxylate water reducer reduce cement dosage?
- Save cement dosage. Polycarboxylate water reducer can significantly reduce the amount of cement dosage of concrete and save costs. By adding an appropriate amount of water reducing agent, you can reduce the amount of cement without reducing the strength of the concrete to achieve the purpose of saving costs.
- How to store PCE polycarboxylate superplasticizer?
- The PCE polycarboxylate superplasticizer should be stored in a cool, dry and well-ventilated place, avoiding direct sunlight and rain. At the same time, it should be kept away from fire and heat sources to prevent fire or explosion accidents. Water seepage problem.
