Lafarge Corp. has formed an aggregate and asphalt company from assets it purchased from Parker Bros. & Co. of Houston.

Reston-based Lafarge said it will own 52 percent of the venture, which will be known as Parker Lafarge Inc. and have its headquarters in Houston. The venture will include of a limestone quarry in New Braunfels, Tex., next to Lafarge's Balcones cement plant; five distribution terminals in Houston; and the Western Railroad Co.

Parker Lafarge is expected to yield more than $40 million in sales annually.

Robert Murdoch, Lafarge's president and chief executive, said the acquisition "fits well with Lafarge's construction materials and cement operations in Texas."

Lafarge is one of the nation's larger cement manufacturers, with $1.5 billion in sales in 1989.

Environmental Elements Corp., a Baltimore-based company that makes large pollution-control systems, said it plans to go public with the sale of 1.6 million common shares worth as much as $25.6 million.

The company, which said its principal customers are electric utilities, pulp and paper producers and developers of solid waste incineration facilities, will use the proceeds to repay debt, fund product development and possibly to make acquisitions.

Environmental Elements also has registered 700,000 common shares with the Securities and Exchange Commission that will be offered by certain shareholders.

The company has applied to have the shares listed on Nasdaq under the symbol NLCO. They are expected to sell for $16 each through Kidder, Peabody & Co. and Legg Mason Wood Walker Inc.

The shares registered will represent about 35 percent of the company after the offering.

MCI Communications Corp. of Washington won a three-year contract to provide data, messaging and voice network services to American Express Co. business units worldwide. Terms of the agreement were not disclosed.

RDA Consultants Ltd. of Hunt Valley, Md., received a contract for an undisclosed amount from Joseph Oat Corp. of Camden, N.J., to install a manufacturing, accounting and job costing system.

CheapShots Inc. of Washington received contracts to provide photography for Coldwell Banker Video Magazine and Mount Vernon Realty Home Show.

Bowne Distinct Inc., a joint venture of Sidney B. Bowne & Son of Mineola, N.Y., and Distinct Management Consultants Inc. of Columbia, Md., was awarded a contract for an undisclosed amount by Southern California Gas Co. to provide computer-aided routing of meter readers.

The Corporate Response Group Inc. of Washington won a contract from the Organisation for Economic Cooperation and Development to formulate guidelines for OECD countries on emergency preparedness and response to hazardous materials accidents. Terms of the contract were not disclosed.

RCB Communications of Fairfax won the public relations contract for Kendall Motorsports of Potomac.

CWT Publications Inc. of Chantilly, a wholly owned subsidiary of CWT Publications Ltd. of London, introduced Computer World Trade, a trading bulletin for computer resellers.

The International Advisory Services Group of Washington published a glossary of terms commonly used in international trade policy, law, economics and diplomacy.

Atlantic Information Services Inc. of Washington introduced Business Opportunities in Eastern Europe, a biweekly newsletter.

GE Information Services of Rockville and American Telephone & Telegraph Co. announced the connection of their electronic messaging services.

The law firm of Ridberg, Press & Sherbill opened in Bethesda.

The Mail Service Center of the Kennedy Institute of Washington changed its name to Kustom Mailings and moved to new offices on Connecticut Avenue.

Datacare Inc., a computer service and support firm, opened in Annapolis.

John S. Groupe opened the Engineering Groupe Inc., an engineering and surveying firm, in Woodbridge.

Contel ASC International of Rockville opened a headquarters in Mountain View, Calif., for its international sales and marketing operations.

Network Management Inc. of Fairfax opened a western region office in Woodland Hills, Calif.

Information Strategies Inc. of Washington introduced the Fundraising Activity & Contribution Tracking System, a database for fund-raisers.

Announcements of news and developments affecting Washington area companies should be sent to Regional Report, Business News Department, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071. Information must be received the Monday before publication to be considered for inclusion in Washington Business.