Detailed Project Report on polycarboxylate ether superplasticizer (pce)

POLYCARBOXYLATE ETHER SUPERPLASTICIZER (PCE) [3635]

Superplasticizers (SPs) are recognized as important admixtures for their applications in modern concrete technology. Efforts have long been made by scientists and technologists to keep fresh concrete fluid to provide homogeneous transport of all particles in the building industry. Traditional techniques which use the superplasticizers such as sulfonated melamine formaldehyde condensate (SMF) and sulfonated naphthalene formaldehyde condensate play a positive role in maintaining high fluiding concrete. The superplasticizers interact with the surface of cement particles and involve dispersion and decreasing of the natural tendency to coagulate in concrete. Polycarboxylates (PC) are recently commonly used as superplasticizers to disperse cement particles in concrete and mortar. However, it has been known that the dispersing force of PC for cement and its time variation are significantly affected by even slight differences in concrete components or mixing conditions. Such instability of the dispersing force is explained by the incompatibility between cement and PC. Moreover, the side chain of the copolymer-type PC is composed of polyethylene oxide units. The methyl oxide bonds are easy to break under heat and oxygen. Furthermore, as a new generation water-reducing agent, the PC water-reducing agent would face the problem of short resources in the near future for nonregenerate ability of crylic acid derived from petroleum, so melamine superplasticizer has shown great advantage. Melamine superplasticizer is one of the most commonly employed due to its colorless, nontoxic, and good thermal stability. However, the application of traditional melamine water reducing agent is becoming less and less due to the complex production process, high cost, and relatively inferior slump loss. Along with the architecture industrial development and on the concrete performance requirements to improve, the development of high performance superplasticizer is imperative. Water-reducing admixtures or plasticizers are all hydrophilic surfactants which, when dissolved in water, deflocculate and disperse particles of cement. By preventing the formation of conglomerates of cement particles in suspension, less water is required to produce a paste of a given consistency or concrete of particular workability. Maintaining low water contents whilst achieving an acceptable level of workability results in higher strengths for given cement content as well as lower permeability and reduced shrinkage. An important consequence of the reduction in the permeability is a major enhancement of its durability. The permeability of concrete to gases (oxygen, CO2), and water (carrying chlorides, sulfates, acids and carbonates) is of major importance with respect to its durability. Retarding admixtures, which extend the hydration induction period and thereby lengthening the setting times, are often treated together with plasticizing admixtures as the main components used for retarding mixtures are also present in water-reducing admixtures. As a result, many retarders tend to reduce mixing water and many water reducers tend to retard the setting of concrete. A much greater reduction in the volume of mixing water can be achieved using socalled superplasticizers or high-range water-reducing admixtures in case of concretes of normal workability. Normal water reducers are capable of reducing water requirement by about 10-15%. Further reductions can be obtained at higher dosages but this may result in undesirable effect on setting, air content, bleeding, segregation and hardening characteristics of concrete. Superplasticizers are capable of reducing water contents by about 30%. Plasticizers (UK: plasticisers) or dispersants are additives that increase the plasticity or viscosity of a material. The dominant applications are for plastics, especially polyvinyl chloride (PVC). The properties of other materials are also improved when blended with plasticizers including concrete, clays, and related products. According to 2014 data, the total global market for plasticizers was 8.4 million metric tons. Plasticizers or water reducers, and superplasticizer or high range water reducers, are chemical admixtures that can be added to concrete mixtures to improve workability. Unless the mix is "starved" of water, the strength of concrete is inversely proportional to the amount of water added or water-cement (w/c) ratio. In order to produce stronger concrete, less water is added (without "starving" the mix), which makes the concrete mixture less workable and difficult to mix, necessitating the use of plasticizers, water reducers, superplasticizers or dispersants. Plasticizers are also often used when pozzolanic ash is added to concrete to improve strength. This method of mix proportioning is especially popular when producing high-strength concrete and fiber-reinforced concrete. Adding 1-2% plasticizer per unit weight of cement is usually sufficient. Adding an excessive amount of plasticizer will result in excessive segregation of concrete and is not advisable. Depending on the particular chemical used, use of too much plasticizer may result in a retarding effect. Plasticizers are commonly manufactured from pop lignosulfonates, a by-product from the paper industry. Superplasticizers have generally been manufactured from sulfonated naphthalene condensate or sulfonated melamine formaldehyde, although newer products based on polycarboxylic ethers are now available. Traditional lignosulfonate-based plasticisers, naphthalene and melamine sulfonate-based superplasticisers disperse the flocculated cement particles through a mechanism of electrostatic repulsion (see colloid). In normal plasticisers, the active substances are adsorbed on to the cement particles, giving them a negative charge, which leads to repulsion between particles. Lignin, naphthalene and melamine sulfonate superplasticisers are organic polymers. The long molecules wrap themselves around the cement particles, giving them a highly negative charge so that they repel each other. Polycarboxylate ether superplasticizer (PCE) or just polycarboxylate (PC), work differently from sulfonate-based superplasticizers, giving cement dispersion by steric stabilisation, instead of electrostatic repulsion. This form of dispersion is more powerful in its effect and gives improved workability retention to the cementitious mix. Ductile iron is a ternary Fe-C-Si alloy, in which the concentrations of carbon and silicon vary typically from 3.5 to 3.9% and from 1.8 to 2.8%, respectively. The selection of the composition is dictated by the casting section size and by the targeted mechanical properties. The output characteristics depend on the matrix structure and the shape, size, and distribution of the graphite spheroids. Matrix and spheroids, in their turn, depend on the chemical composition of the melt, on the desulphurizing and spheroidizing methods applied in the treatment ladle, onthe inoculation method and finally, on the time elapsing between these events and the casting in the mould . Moreover, the mechanics of spheroid formation itself has not yet been completely understood and many models are still in competition. Production of ductile iron is influenced by a large number of metallurgical, technological, heat transfer, and designing parameters. The first step of the production of ductile iron castings is careful selection of the charge materials. Manganese and chromium have the strongest influence on mechanical properties of the ductile iron. For this reason, their concentration in the metal is of particular importance. These elements arise in the charge from the steel scrap, pig iron, and returns. It is a recommended practice to surchage steel scrap so that the average Cr content remains below 0.1 percent. Ideally, the same advice would be given for Mn but, unfortunately, all steel scraps contain Mn, mostly about 0.5 percent. The amount of steel scrap in the charge must ensure the production of castings that are as free of carbides as possible. It is necessary not to mix grey iron return scrap with the ductile iron one, because grey iron castings have an increased manganese and chromium content. Ductile iron return scrap has a large silicon and a small sulphur content. However, if spheroidizing elements are present in excessive concentration they act as despheroidizers.

COST ESTIMATION

Plant Capacity                           5 Ton/Day  
Land & Building (0.5 Acre)     Rs. 1.24 Cr
Plant & Machinery                    Rs. 80 Lac
Working Capital for 2 Months   Rs. 3.27 Cr
Total Capital Investment          Rs. 5.66 Cr
Rate of Return                         29%
Break Even Point                     50%



INTRODUCTION    
CHEMISTRY OF SUPER PLASTICIZER FOR CONCRETE    
SUPERPLASTICIZERS    
GENERATIONS OF SUPERPLASTICIZERS:    
SUPERPLASTICIZERS – HIGH WATER REDUCERS:    
SUPERPLASTICIZERS IN SELF COMPACTING CONCRETE    
MIX DESIGN METHOD IN BRIEF    
RAW MATERIALS    
METHACRYLIC ACID (MAA)    
METHOXY POLYETHYLENE GLYCOL    
ADVANTAGE PCE SUPERPLASTICIZER    
MARKET SURVEY    
GLOBAL MARKET POSITION OF POLYCARBOXYLATE
   ETHER SUPERPLASTICIZER    
HIGH DEMAND FROM EMERGING ECONOMIES    
USAGE OF SULPHONATED NAPHTHALENE FORMALDEHYDE (SNF)
   IS EXPECTED TO INCREASE    
ASIA-PACIFIC TO HAVE HIGHEST CAGR FOR THE SUPERPLASTICIZER MARKET    
MAJOR PLAYERS IN SUPERPLASTICIZER MARKET    
OVERVIEW OF CONSTRUCTION CHEMICALS    
CONSTRUCTION CHEMICALS TAKE CONCRETE SHAPE    
CONSTRUCTION CHEMICAL SEGMENTS    
ADMIXTURES    
FLOORING AGENTS    
WATERPROOFING AGENTS    
REPAIR & REHABILITATION    
SUBCATEGORIES    
CURING COMPOUNDS    
MAJOR PLAYERS    
CHALLENGES    
CHARACTERISTICS OF PLASTICIZER FOR CONCRETE    
CHARACTERISTICS OF THE DIFFERENT CHEMICALS    
MECHANISM OF ACTION OF WATER REDUCERS    
MANUFACTURERS/SUPPLIERS OF POLYCARBOXYLATE ETHER
  SUPERPLASTICIZER    
MANUFACTURING PROCESS OF POLYCARBOXYLATE ETHER SUPER PLASTICIZER (PCE)    
THE SYNTHESIS CONDITION AND STEPS ARE AS FOLLOWS    
PROCESS FLOW DIAGRAM    
COMPOSITION OF HIGH PERFORMANCE POLY CARBOXYLATED
   BASED SUPERPLASTICIZER    
COMMON PLASTICIZER BY TYPES    
MECHANISMS OF DISPERSION    
ADDITIVES FOR CONCRETE PLASTICIZER    
THIS EFFECT CAN BE USED IN TWO WAYS    
TABLE: TYPES OF ADDITIVES WATER REDUCING/HIGH WATER REDUCING    
TABLE: TYPES OF SUPERPLASTICIZER ADDITIVES (CHEMICAL STRUCTURE)    
THE SUPERPLASTICIZERS CAN BE CLASSIFIED INTO TWO GROUPS    
WATER REDUCING/PLASTICIZING    
ADMIXTURE AND ITS MECHANISM    
FIGURE: THE EFFECT OF A WATER REDUCING ADMIXTURE ON THE DISPERSION OF CEMENT PARTICLES    
FIGURE: FLOCCULATING CEMENT PARTICLES TRAPPING THE MIX WATER    
SUPERPLASTICIZERS    
POLYCARBOXYLATES    
POLYCARBOXYLATE HIGH-EFFICIENCY CONCRETE WATER REDUCER    
PRODUCT DESCRIPTION     
MATERIAL SUFETY DATA SHEET FOR POLY CARBOXYLATE ETHER    
HAZARDS IDENTIFICATION    
LABEL ELEMENTS    
MIXTURES    
FIRST AID MEASURES    
FIREFIGHTING MEASURES    
ACCIDENTAL RELEASE MEASURES    
METHODS AND MATERIAL FOR CONTAINMENT AND CLEANING UP    
HANDLING AND STORAGE    
MATERIAL SAFETY DATA SHEET OF HIGH PERFORMANCE POLY CARBOXYLATED    
ETHER BASED SUPERPLASTICIZER    
HAZARDS IDENTIFICATION    
FIRST-AID MEASURES    
FIRE-FIGHTING MEASURES    
ACCIDENTAL RELEASE MEASURES/SPILLS AND LEAKS    
HANDLING & STORAGE    
EXPOSURE CONTROLS/PERSONAL PROTECTION    
VENTILATION    
PHYSICAL & CHEMICAL PROPERTIES    
STABILITY & REACTIVITY    
TOXICOLOGICAL INFORMATION    
OPTIMIZING POLYCARBOXYLATE BASED SUPERPLASTICIZER DOSAGE
  WITH DIFFERENT CEMENT TYPE    
EXPERIMENTAL METHODS    
MATERIALS AND MIXTURES    
TEST METHODS    
RESULTS AND DISCUSSIONS    
EFFECT OF SUPER PLASTICIZER TYPE AND WATER-TO-CEMENT RATIO    
BENEFITS OF CONCRETE PLASTICIZER    
SUPERPLASTICIZERS (HIGH RANGE WATER REDUCER)    
PLANT LAYOUT    
SUPPLIERS OF RAW MATERIALS    
METHACRYLIC ACID    
METHOXY POLYETHYLENE GLYCOL    
SUPPLIERS OF PLANT AND MACHINERY    
SUPPLIERS OF MIXING TANKS    
SUPPLIERS OF CONDENSER    
SUPPLIERS OF NEUTRALIZATION TANK    
SUPPLIERS OF BOILERS    
SUPPLIERS OF PACKAGING MACHINE    
SUPPLIERS OF MATERIAL HANDLING EQUIPMENTS    
SUPPLIERS OF INSTRUMENTATION & PROCESS CONTROL EQUIPMENTS    
SUPPLIERS OF LABORATORY EQUIPMENTS    
SUPPLIERS OF STORAGE VESSEL (STORAGE TANKS)    


APPENDIX – A:

01.    PLANT ECONOMICS    
02.    LAND & BUILDING     
03.    PLANT AND MACHINERY    
04.    OTHER FIXED ASSESTS    
05.    FIXED CAPITAL    
06.    RAW MATERIAL    
07.    SALARY AND WAGES    
08.    UTILITIES AND OVERHEADS
09.    TOTAL WORKING CAPITAL    
10.    TOTAL CAPITAL INVESTMENT    
11.    COST OF PRODUCTION    
12.    TURN OVER/ANNUM    
13.    BREAK EVEN POINT     
14.    RESOURCES FOR FINANCE    
15.    INSTALMENT PAYABLE IN 5 YEARS    
16.    DEPRECIATION CHART FOR 5 YEARS    
17.    PROFIT ANALYSIS FOR 5 YEARS    
18.    PROJECTED BALANCE SHEET FOR (5 YEARS)