保溫膠粉是一種在工程建設(shè)中很重要的材料，主要有骨料和輔料組成，骨料主要就是水泥，砂，輔料有羥丙基甲基纖維素，可再分散性乳膠粉，抗裂纖維等，由于原料多，配比嚴(yán)格，所以在生產(chǎn)過(guò)程中難免會(huì)出現(xiàn)一些問(wèn)題，下面
濟(jì)南保溫膠粉廠家就總結(jié)下常出現(xiàn)的問(wèn)題。
Thermal insulation adhesive powder is a very important material in engineering construction, mainly composed of aggregates and auxiliary materials. The aggregates are mainly cement, sand, and auxiliary materials include hydroxypropyl methyl cellulose, redispersible latex powder, crack resistant fibers, etc. Due to the large number of raw materials and strict ratio, some problems may inevitably occur during the production process. Below, Jinan thermal insulation adhesive powder manufacturer will summarize the common problems.
使用的砂的大粒徑一般小于3.5mm，遠(yuǎn)遠(yuǎn)小于標(biāo)準(zhǔn)規(guī)定的4.75mm，施工時(shí)工人感覺(jué)保溫膠粉還是較粗，其實(shí)感覺(jué)較粗主要是砂漿的和易性差，施工性不好，顯得大顆粒較多，主要原因在于人工砂的顆粒級(jí)配不好，往往砂的組成是兩頭多，中間少，需要補(bǔ)充中間區(qū)域的砂。
The large particle size of the sand used is generally less than 3.5mm, which is much smaller than the standard requirement of 4.75mm. During construction, workers feel that the insulation adhesive powder is still relatively coarse. In fact, the main reason for the coarser feeling is that the workability of the mortar is poor, and the workability is not good, resulting in a large number of large particles. The main reason is that the particle size of artificial sand is not good, and the composition of the sand is often more at both ends and less in the middle, so it is necessary to supplement the sand in the middle area.
抹灰、空鼓開(kāi)裂分為塑性開(kāi)裂和干縮開(kāi)裂兩種。塑性開(kāi)裂是指保溫膠粉在硬化前或硬化過(guò)程中產(chǎn)生開(kāi)裂，它一般發(fā)生在砂漿硬化初期，裂紋一般都比較粗，裂縫長(zhǎng)度短;干縮開(kāi)裂是指砂漿在硬化后產(chǎn)生開(kāi)裂，它一般發(fā)生在砂漿硬化后期，裂紋特點(diǎn)是細(xì)而長(zhǎng)。
Plastering and hollow cracking are divided into two types: plastic cracking and dry shrinkage cracking. Plastic cracking refers to the cracking of insulation adhesive powder before or during the hardening process. It generally occurs in the early stage of mortar hardening, and the cracks are generally relatively thick and short in length; Dry shrinkage cracking refers to the cracking of mortar after hardening, which generally occurs in the later stage of mortar hardening and is characterized by thin and long cracks.
塑性開(kāi)裂主要是由于保溫膠粉抹灰后不久，在塑性狀態(tài)下由于水分散失快而產(chǎn)生收縮應(yīng)力，當(dāng)收縮應(yīng)力大于砂漿自身的粘結(jié)強(qiáng)度時(shí)，表面產(chǎn)生裂縫。它往往與砂漿的性能和溫度、環(huán)境溫度以及風(fēng)度等有關(guān)系。水泥用量大，砂細(xì)度模數(shù)越小，含泥量越高，用水量越大，砂漿保水性差，砂漿越容易發(fā)生塑性開(kāi)裂。
Plastic cracking is mainly due to the shrinkage stress caused by the rapid loss of water in the plastic state shortly after the insulation adhesive powder is plastered. When the shrinkage stress is greater than the bonding strength of the mortar itself, surface cracks occur. It is often related to the performance and temperature of mortar, environmental temperature, and wind strength. The larger the amount of cement used, the smaller the fineness modulus of sand, the higher the mud content, and the higher the water consumption. The water retention of mortar is poor, and the mortar is more prone to plastic cracking.
干縮開(kāi)裂主要由于保溫膠粉水泥用量大、強(qiáng)度高導(dǎo)致體積收縮;施工后期養(yǎng)護(hù)不到位;砂漿摻合料或添加劑干燥收縮值大;墻體本身開(kāi)裂;界面處理不當(dāng);砂漿強(qiáng)度等級(jí)亂用或用錯(cuò);基材與砂漿彈性模量相差太大等。
Dry shrinkage cracking is mainly caused by the large amount and high strength of insulation rubber powder cement, which leads to volume shrinkage; Insufficient maintenance in the later stage of construction; The drying shrinkage value of mortar admixtures or additives is high; Cracking of the wall itself; Improper interface handling; Misuse or misuse of mortar strength grade; The difference in elastic modulus between the substrate and mortar is too large.
Today, I will summarize the problems and solutions that may occur when using insulation adhesive powder. If you have any needs, please feel free to consult us at any time http://www.wodeapartment.com To provide you with a good solution!
魯公網(wǎng)安備