ST-45HRM CE CONCRETE PUMP— GENERAL INFORMATION

Regional Differences

Concrete is made by mixing locally available rock and sand with cement and water. For this reason there are great differences in the pumpability of concrete from one region of the country to another.

It is impossible to define a specific mix for each region that the Model ST-45 be will working in.Therefore, the mixes on pages 64-65 will provide a basic guideline for establishing the proper mix design for your area.

Use this information to specify your requirements to your local ready-mix batch plant, contractor and civil engineer. It may take minor adjustments to make a mix pumpable, so you should explain your needs.

The elements that have to be controlled and consistently maintained by the batch plant are:

1.The sizing and mix percentage of rocks, gap graded from the largest down through the smallest sizes.

2.Sand with a sieve analysis that has the proper percentage of fines, ASTM C33 spec.

3.Sufficient cement to produce the required design strength of the concrete and provide the lubricating binder to pump the concrete through the delivery system.

Use a minimum of:

In addition, the Mayco Concrete ST-45HRM CE Pump can be used to pump a large aggregate hard rock as follows:

1.Pea rock 12.7mm (1/2" minus) pump with mixes being as low as 30% rock and 70% sand. (See page 50, for comments on cleaning the pump.)

2.Shortening pea rock when used with an air compressor and nozzle. (See back pages for recommended set-up.)

3.“Mud Jacking”, high pressure grouting.

227 Kg (500 lbs.) of cement/cu yd for 17.2 mPa (2500 p.s.i.) concrete after 28 days.

240 kg (530 lbs.) of cement/cu yd for 20.7 mPa (3000 p.s.i.) concrete after 28 days.

272 kg (600 lbs.) of cement/cu yd for 27.6 mPa (4000 p.s.i.) concrete after 28 days.

4.Admixture pump-aid if necessary.

5.The proper amount of water to make a workable slump and plasticize the mix.

PAGE 18 — MAYCO ST-45HRM CE PUMP — OPERATION & PARTS MANUAL — REV. #0 (02/23/04)

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Multiquip manual ST-45HRM CE Concrete PUMP- General Information, Regional Differences, Use a minimum
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ST-45HRM CE specifications

The Multiquip ST-45HRM CE is a robust and versatile machine designed for a variety of heavy-duty applications, particularly in construction and industrial settings. Known for its durability and efficiency, the ST-45HRM CE stands out due to its combination of advanced technology, user-friendly features, and powerful performance, making it an ideal choice for professionals seeking reliable equipment.

One of the main features of the ST-45HRM CE is its powerful engine. It is equipped with a high-performance diesel engine that provides exceptional reliability and fuel efficiency. This engine allows the machine to achieve high-performance levels while minimizing operational costs, making it a cost-effective solution for various jobs. Additionally, the engine meets stringent environmental regulations, ensuring compliance with the latest emission standards.

The ST-45HRM CE is designed with operator comfort and safety in mind. One of its key characteristics is the spacious and ergonomically designed operator platform that allows for easy access and enhanced visibility. The controls are intuitively placed, providing excellent maneuverability and reducing operator fatigue during long working hours. Moreover, safety features such as emergency shut-off switches and protective enclosures are built into the design, ensuring a safer working environment.

In terms of technology, the ST-45HRM CE is equipped with advanced hydraulic systems that enhance its lifting capabilities. This machine is capable of lifting loads up to 45 tons, making it suitable for heavy materials and equipment. The hydraulic system is designed for smooth operation, allowing for precise control and optimal performance in various applications, including lifting, transportation, and heavy-duty towing.

Maintenance is another consideration where the ST-45HRM CE excels. It features easy access points for routine checks and repairs, reducing downtime and operational costs associated with maintenance. The components are engineered for longevity, ensuring that the machine can withstand the rigors of continuous use in demanding environments.

Overall, the Multiquip ST-45HRM CE is a standout in its category, boasting an exceptional blend of power, efficiency, and user-centric design. With its advanced features, safety technologies, and ease of maintenance, it is ideal for professionals in construction, industrial lifting, and other heavy-duty applications, providing a reliable solution to meet their needs.
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