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 When building a house in hot weather, concrete may face a higher risk of cracking. The main reason is that high temperatures accelerate setting, while strong sunlight and wind increase surface moisture evaporation. Without proper construction control and timely curing, shrinkage cracking can become more likely. If you are planning to pour concrete for slabs, roofs, terraces, or other structures this summer, remember these four points. 1. Avoid Extreme Heat, Direct Sunlight, and Strong Winds Avoid pouring concrete during the hottest part of the day whenever possible. Early morning, late afternoon, or cooler weather conditions are generally better choices. Slabs, roofs, and terraces are especially exposed to rapid moisture loss. 2. Check Formwork Temperature Before Pouring Formwork exposed to the sun for a long time can become very hot, especially metal formwork. Use appropriate shading or cooling measures when necessary, but make sure no standing water remains inside the formwork b...

 Bubbling, blistering, and localized hollow areas are common problems encountered during gypsum plaster application. When bubbles appear on the wall, the first reaction is often: “Is there something wrong with the gypsum plaster?” However, in many real construction projects, bubbling is not necessarily caused by the gypsum material itself. In many cases, the actual causes are related to substrate absorption, substrate preparation, application thickness, and plastering techniques. This is especially important when working on concrete walls, aerated concrete blocks, or brick substrates. If the substrate is too dry or absorbs water too quickly, the water in the gypsum slurry can be rapidly drawn into the substrate, making it difficult for trapped air to escape. The result can be bubbling, blistering, or even hollow areas. So, how can gypsum plaster bubbling be reduced? Here are four practical steps worth paying attention to. Step 1: Moisturize and Seal the Substrate — The Most Importa...

 One of the biggest challenges in gypsum plastering is: Bubbles, blisters, and even hollow areas appearing shortly after application. Many contractors immediately ask: “Is the gypsum material causing the problem?” However, based on real construction experience: Many bubbling issues are not caused by the gypsum itself, but by improper substrate preparation. A dry wall surface, excessive water absorption, and trapped air inside substrate pores can all lead to bubbling after plaster application. So how can we effectively reduce gypsum plaster bubbling? Remember these 4 important steps: 1. Moisturize and Seal the Substrate Proper substrate preparation is essential before plastering. For concrete walls, pre-wet the surface and keep it damp without visible water. Then apply a suitable bonding agent before plastering. For AAC blocks or brick walls, sufficient pre-wetting is required to prevent rapid water absorption from the gypsum plaster. 2. Keep the First Coat Thin Do not try to achiev...

 In the construction industry, lightweight gypsum plaster has become increasingly popular because of its advantages such as lightweight performance, thermal insulation, smooth surface finish, and convenient application. However, during actual projects, many contractors encounter a frustrating problem: After the lightweight gypsum plaster is applied to the wall, bubbles appear on the surface. At this moment, the responsibility is often immediately assigned to the construction workers. People may think: “The workers did not mix it properly.” “The plaster was too wet.” “The finishing process was not done correctly.” But is this really the whole story? In reality, lightweight gypsum plaster bubbling is usually not caused by one single mistake. It is the result of interactions between the material itself, the wall substrate, environmental conditions, and construction methods. To solve the problem, we first need to understand what is happening behind the surface. The First Cause: The Spe...

 During tile adhesive formulation development, many manufacturers ask: Can water reducer be added to tile adhesive? Will it improve performance or affect bonding strength and workability? The answer is: Yes, water reducer can be used in tile adhesive formulations, but the type and dosage must be carefully controlled according to the formulation system. With the development of high-performance dry mix mortar, polycarboxylate superplasticizer (PCE) has gradually been introduced into tile adhesive systems. By improving cement particle dispersion, water reducer helps reduce water demand, increase density, and optimize overall performance. Main Functions of Water Reducer in Tile Adhesive 1. Reduce Water Demand and Improve Density Water reducer improves the dispersion of cement particles, allowing tile adhesive to maintain good workability with a lower water-to-cement ratio. Proper application can help: Reduce internal pores Improve mortar density Enhance early strength Reduce shrinkage ...

 Polycarboxylate Superplasticizer (PCE), also known as Polycarboxylate Ether Water Reducer, is one of the most important high-performance admixtures used in modern concrete production. It improves concrete workability, reduces water consumption and enhances construction performance. However, during storage, some users may find: Floating substances Unusual odor Sedimentation Separation Reduced concrete performance These signs may indicate microbial contamination or product deterioration. So how can we identify spoiled PCE superplasticizer and prevent these problems? 1. Common Signs of PCE Superplasticizer Spoilage The quality of PCE can be evaluated through appearance, odor and performance. Normally, PCE appears as a uniform transparent or slightly yellow liquid without sediment or floating particles. When contamination begins, small light-colored spots or cotton-like substances may appear on the surface. As deterioration continues: Floating clusters increase Bubbles appear Separati...